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Tesis sobre el tema "Catalytic Cracking and Pyrolysis"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 1 de febrero de 2022

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1

Kantarelis, Efthymios. "Catalytic Steam Pyrolysis of Biomass for Production of Liquid Feedstock." Doctoral thesis, KTH, Energi- och ugnsteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142412.

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The current societal needs for fuels and chemical commodities strongly depend on fossil resources. This dependence can lead to economic instabilities, political problems and insecurity of supplies. Moreover, global warming, which is associated with the massive use of fossil resources, is a dramatic “collateral damage” that endangers the future of the planet. Biomass is the main renewable source available today that can, produce various liquid, gaseous and solid products. Due to their lignocellulosic origin are considered CO2 neutral and thus can generate CO2 credits. Biomass processing can mee

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2

Conti, Roberto <1986&gt. "Analytical Pyrolysis and Microextraction Methods to Characterize Oil and Biochar from Thermal and Catalytic Cracking of Biomass." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7320/.

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In this dissertation thermal and catalytic pyrolysis of protein-rich biomass was investigated. The study was focused on the liquid and solid products. This thesis was aimed to gather chemical information on the thermal behavior of proteinaceous substrates in the presence of zeolite and compare with lignocellulosic biomass. Furthermore, the thesis was focused on the development of reliable analytical methods by means of Py-GC-MS in order to predicting bio-oil composition and to investigating biochar structure and its correlation with thermal stability. In addition a sampling procedure for the d

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3

Hörnell, Christina. "Thermochemical and Catalytic Upgrading in a Fuel Context : Peat, Biomass and Alkenes." Doctoral thesis, KTH, Chemical Engineering and Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3164.

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4

Smith, Bradley Joseph. "Steam-Assisted Catalysis of n-Dodecane as a Jet Fuel Analogue in a Flow Reactor System for Hypersonic Thermal Management." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1577978953025703.

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5

Thegarid, Nicolas. "Synthèse d’essences hybrides par co-traitement de distillats de pétrole et d’huiles de pyrolyse de bio-masse en craquage catalytique." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10034.

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La pyrolyse de la biomasse ligno-cellulosique permet la production de bio-huiles dans la perspective à court terme de carburants hybrides contenant une fraction de bio-carbone dans un carburant conventionnel d'origine fossile (essence ou diesel). Cependant, la forte concentration en oxygène dans ces huiles, leur instabilité et faible densité énergétique (comparée aux carburants fossiles) imposent des pré-traitements permettant cette co-synthèse de carburants hybrides. Ainsi, après hydrotraitement ou ajout d’un catalyseur durant la pyrolyse, ces bio-huiles peuvent être mélangées à un distillat

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6

Authier, Olivier. "Etude découplée des phénomènes physicochimiques impliqués dans les réacteurs de gazéification de la biomasse. Application au cas d'un lit fluidisé double." Thesis, Vandoeuvre-les-Nancy, INPL, 2010. http://www.theses.fr/2010INPL015N/document.

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Parmi les technologies de gazéification de la biomasse, le gazéifieur à lit fluidisé double permet la production d’un gaz de synthèse contenant du méthane. L’étude des processus physicochimiques impliqués dans le gazéifieur est rendue difficile par le fait qu’ils se produisent simultanément. Dans cette thèse, les principales réactions chimiques sont étudiées de manière découplée, indépendamment les unes des autres à l’aide de dispositifs de laboratoire originaux et dans des conditions thermiques semblables à celles du gazéifieur. Les processus intraparticulaires contrôlant la pyrolyse de la bi

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7

Ofoma, Ifedinma. "Catalytic Pyrolysis of Polyolefins." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10439.

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Due to the migration of scientists towards green chemistry, landfilling and incineration will no longer be acceptable options for plastics waste disposal in the future. Consequently new methods for recycling plastics and plastic products such as carpets are being researched. This study serves as a preliminary effort to study the catalytic feedstock recycling of polyolefins, specifically PP and PE, as source for gasoline range fuels, as well as an alternative for plastic waste disposal. Several studies have been conducted on the pyrolysis of waste polyolefins using commercial cracking catalys

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8

Oliveira, Ricardo Miguel de. "Craqueamento termocatal?tico de ?leo de girassol na presen?a da peneira molecular SAPO-5." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17637.

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Made available in DSpace on 2014-12-17T15:41:53Z (GMT). No. of bitstreams: 1 RicardoMO_DISSERT.pdf: 2015893 bytes, checksum: dea62cb9390752fd7430293c73c9a1dd (MD5) Previous issue date: 2011-12-06<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>The catalytic cracking of triglycerides presents itself as a possible alternative to the production of biofuels with low emission of pollutants. In this work were synthesized the SAPO-5, the catalysts for the cracking reaction of soybean oil is presented. The solids were powder X-ray diffraction (XRD), thermogravimetric analysis (TG

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9

Castro, Kesia Kelly Vieira de. "S?ntese, caracteriza??o e aplica??o do MCM-41 e A1-MCM-41 na pir?lise do res?duo atmosf?rico de petr?leo." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17616.

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Made available in DSpace on 2014-12-17T15:41:47Z (GMT). No. of bitstreams: 1 KesiaKV.pdf: 2272602 bytes, checksum: 46f23a52fbc9d4e74dfd9f25d2f58e11 (MD5) Previous issue date: 2009-02-19<br>In present work, mesoporous materials of the M41S family were synthesized, which were discovered in the early 90s by researchers from Mobil Oil Corporation, thus allowing new perspectives in the field of catalysis. One of the most important members of this family is the MCM-41, which has a hexagonal array of mesopores with pore diameters ranging from 2 to 10 nm and a high surface area, enabling it to becom

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10

Nicolson, Iain Sinclair. "Catalytic pyrolysis of nitro aromatic compounds." Thesis, University of Edinburgh, 2003. http://hdl.handle.net/1842/15526.

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The work contained in this thesis was intended to study the rearrangement of <i>o</i>-nitrotoluene to anthranil which has previously been shown to occur under a variety of conditions. Flash Vacuum Pyrolysis (FVP) of nitrotoluene over zeolite 13X was carried out. <i>o</i>-Nitrotoluene was found to give conversion to toluene in 5.5% yield with recovery of starting material (12%). FVP of <i>m</i>-nitrotoluene gave recovery of toluene in 8% yield and starting material (7%). FVP of <i>p</i>-nitrotoluene gave only a trace of toluene with mainly recovery of unreacted starting material (12%). FVP of 1

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11

Albahri, Tareq Abduljalil. "Mechanistic modeling of catalytic cracking chemistry /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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12

Gao, Feng. "Pyrolysis of Waste Plastics into Fuels." Thesis, University of Canterbury. Chemical and Process Engineering, 2010. http://hdl.handle.net/10092/4303.

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Waste plastic disposal and excessive use of fossil fuels have caused environment concerns in the world. Both plastics and petroleum derived fuels are hydrocarbons that contain the elements of carbon and hydrogen. The difference between them is that plastic molecules have longer carbon chains than those in LPG, petrol, and diesel fuels. Therefore, it is possible to convert waste plastic into fuels. The main objectives of this study were to understand and optimize the processes of plastic pyrolysis for maximizing the diesel range products, and to design a continuous pyrolysis apparatus as a semi

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13

Abdellaoui, Hamza. "Catalytic Pyrolysis of Olive Mill Wastewater Sludge." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4468.

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Olive mill wastewater sludge (OMWS) is the solid residue that remains in the evaporation ponds after evaporation of the majority of water in the olive mill wastewater (OMW). OMWS is a major environmental pollutant in the olive oil producing regions. Approximately 41.16 wt. % of the OMWS was soluble in hexanes (HSF). The fatty acids in this fraction consist mainly of oleic and palmitic acid. Catalytic pyrolysis of the OMWS over red mud and HZSM-5 has been demonstrated to be an effective technology for converting this waste material into fuel. Red mud-catalyzed pyrolysis gave higher organics yie

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14

Jahromi, Hossein. "Hydrodeoxygenation of Pinyon-Juniper Catalytic Pyrolysis Oil." DigitalCommons@USU, 2019. https://digitalcommons.usu.edu/etd/7422.

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Catalytic hydrodeoxygenation (HDO), is an effective process to convert oxygenated compounds to hydrocarbons. This process is widely used for improving the negative properties of biomass-derived pyrolysis oils (bio-oils) such as high acidity, poor stability, and low heating value. During this process oxygen is removed from the bio-oil in the form of water, thus the liquid product of HDO process consists of aqueous phase and hydrocarbon phase that can be easily separated. Synthesis of efficient HDO catalyst has been a major challenge in the field of bio-oil upgrading. Red mud, which is an alkali

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15

Scriba, Manfred R. "Silicon nanoparticle sysnthesis through thermal catalytic pyrolysis." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/6550.

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Includes bibliographical references.<br>Nanoparticles are considered as fundamental building blocks of nanotechnology and, silicon nanoparticles in particular, will form the basis of applications in single electron transistors, floating gate memory devices, solid state lighting, chemical sensors and flexible electronics, including solar cells and luminescent materials, printed on paper. A remaining key challenge however in the development of applications is the reproducible and reliable production of nanomaterial in sufficient quantities. Historically nanoparticles have been manufactured by to

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16

Ochonogor, Alfred Ezinna. "Thermal and catalytic pyrolysis of waste brominated plastics." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574522.

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The pyrolysis of brominated high impact polystyrene, brominated acrylonitrile butadiene styrene, television housing, integrated circuit tray and personal computer front panel plastics were performed respectively in a two stage reactor at a degradation temperature of 570 QC and heating rate of 20 QC. Four catalysts were used during the pyrolysis; waste fluid catalytic cracking catalyst (FCC), a natural zeolite catalyst, two Y -zeolite catalysts (CB V 400 and CBV720) in order to increase the value of the pyrolysis products. The pyrolysis products were analysed by various analytical techniques. T

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17

Kidane, Yonas Afewerki. "Catalytic Fast Pyrolysis of Whole Field Pennycress Biomass." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4464.

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Reports indicate that the worldwide energy consumption and fossil fuel energy production level will have an opposite trend in the coming two decades. The former will continue to increase while the later will decrease. Therefore, additional sources of energy need to be developed. Field pennycress (Thlaspi, arvense L.) has been found to be an ideal source of energy because it has prolific yield and has no value as food. We demonstrated conventional and catalytic fast pyrolysis of whole pennycress biomass in a fluidized bed reactor. Characterization studies on field pennycress showed that the bio

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18

Yathavan, Bhuvanesh Kumar. "Conventional and Catalytic Pyrolysis of Pinyon Juniper Biomass." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2053.

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Pinyon and juniper are invasive woody species which has occupied more than 47 million acres of land in Western United States. Pinyon juniper woodlands domination decreases the herbaceous vegetation, increase bare lands which in turn increases soil erosion and nutrition loss. Thus, The US Bureau of Land Management (BLM) has focused on harvesting these woody species to make room for herbaceous vegetation. The major application of harvested pinyon-juniper (PJ) is low value firewood. Thus, there is a need to develop new high value products from this woody biomass to reduce the cost of harvesting.

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19

Wauts, Johann André. "Catalytic microwave pyrolysis to produce upgraded bio-oil." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/61344.

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To assess the performance and future possibilities of catalytic microwave pyrolysis, laboratory-scale experiments were conducted on a widely available biomass feedstock, Eucalyptus grandis. Non-catalysed microwave pyrolysis was conducted under varying conditions to determine important factors of the microwave pyrolysis process and to conduct a basic performance evaluation. Future possibilities of microwave pyrolysis were determined by comparison to available technologies. Calcined Mg-Al LDH clay (layered double oxide or LDO) was used as catalyst to improve the quality of the pyrolysis process

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20

Nazarudin, N. "Catalytic cracking of plastic waste using nanoporous materials." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1380400/.

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The catalytic cracking of linear low density polyethylene (lldPE), polypropylene (PP) and plastic waste were investigated using commercial zeolites (ZSM-5, zeolite β, Mordenite, and USY), USY modified by ion-exchange, mixed catalyst (ZSM-5/ zeolite β, ZSM-5/USY), and nanocrystaline-ZSM-5. USY was modified by ion-exchange with ammonium salt at two different temperatures (298K and 353K) and for various reaction times. The cracking of PP and lldPE was performed using mixed catalysts and in addition a detailed study was carried out employing statistical design of response surface methodology to ob

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21

Goteti, Anil Chaitanya. "Experimental investigation and systems modeling of fractional catalytic pyrolysis of pine." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/42844.

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The fractional catalytic pyrolysis of pine was studied both experimentally and through models. A preliminary stage economic analysis was conducted for a wood chip pyrolysis facility operating at a feed rate of 2000 wet ton/day for producing bio-oil. In the experimental study, multiple grams of bio oil were produced in a single run to facilitate the more extensive characterization of the oil produced from pyrolysis of biomass impregnated with different catalysts. Two reactors configurations, a screw extruder and a tubular pyrolysis reactor, were explored to perform fractional catalytic pyrolys

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22

Wikberg, Elena. "Catalytic Upgrading of Fast Pyrolysis Bio-oil Using Zeolites." Thesis, KTH, Kraft- och värmeteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-255683.

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Fast pyrolysis bio-oil is considered as a possible source for production of liquid bio-fuels and bio-chemicals enabling the necessary transition to a renewable energy system. In this Master’s thesis work the upgrading of fast pyrolysis bio-oils with Fluid Catalytic Cracking (FCC) conversion process at industrially relevant conditions is studied using Fluid Catalytic Cracking Micro Activity Test (FCC MAT) unit at RISE ETC in Piteå, Sweden. The study is focused on evaluating the process in terms of production of value-added products including petrochemical materials, such as propylene and benzen

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23

Akude, Angela M. "Production of Phenol-formaldehyde Adhesives from Catalytic Pyrolysis Oil." DigitalCommons@USU, 2017. https://digitalcommons.usu.edu/etd/5612.

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Phenol-formaldehyde adhesives are important adhesives known to have superior water resistance capacity and high mechanical strength when utilized in wood-based applications. Due to unsustainability and environmental issues associated with the use of fossil fuels, there is an urgent need to look for alternative raw materials, which are renewable in nature. Pinyon-juniper biomass has been found to be a suitable replacement for petroleum-based phenol because it is renewable, abundant, and readily available. In this thesis, bio-oil produced from the pyrolysis of pinyon-juniper biomass using red mu

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24

Atadana, Frederick Williams. "Catalytic Pyrolysis of Cellulose, Hemicellulose and Lignin Model Compounds." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31251.

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<p>The effect of HZSM-5 catalyst and NaOH pretreatment on the product distribution and bio oil properties from pyrolysis of cellulose, hemicellulose and lignin model compounds was investigated at 450 Â°C. NaOH pretreated and untreated cellulose was pyrolyzed on sand and the HZSM-5 catalysts; VPISU001 HZSM-5, BASF HZSM-5, and Sud-Chemie HZSM-5. The pyrolysis of cellulose on BASF and Sud-Chemie HZSM-5 catalysts increased the yields of the organic liquid fraction, total liquid and char while decreasing the gas yields. However the catalyst decreased the organic and char yields while increasing the

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25

Pattiya, Adisak. "Catalytic pyrolysis of agricultural residues for bio-oil production." Thesis, Aston University, 2007. http://publications.aston.ac.uk/9804/.

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Agricultural residues from Thailand, namely stalk and rhizome of cassava plants, were employed as raw materials for bio-oil production via fast pyrolysis technology. There were two main objectives of this project. The first one was to determine the optimum pyrolysis temperature for maximising the organics yield and to investigate the properties of the bio-oils produced. To achieve this objective, pyrolysis experiments were conducted using a bench-scale (150 g/h) reactor system, followed by bio-oil analysis. It was found that the reactor bed temperature that could give the highest organics yiel

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26

Salter, Elizabeth H. "Catalytic pyrolysis of biomass for improved liquid fuel quality." Thesis, Aston University, 2001. http://publications.aston.ac.uk/9633/.

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27

Sundaralingam, Ramasubramanian. "Optimization of a model IV fluidized catalytic cracking unit." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58750.pdf.

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28

Idris, Muhammad Nuru. "Hydrodynamics and process modelling of fluid catalytic cracking reactors." Thesis, University of Leeds, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531527.

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29

Wang, Shule. "Catalytic fast pyrolysis of softwood under N2 and H2 atmosphere." Thesis, KTH, Energi- och ugnsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-216995.

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Bio-oil generated from biomass is becoming one of the most promising alternatives as potential energy sources to replace fossil fuels in the transportation sector. Fast pyrolysis of biomass is one of the most economically feasible ways to produce bio-oil according to recent research on thermochemical conversion of biomass. Upgrading of oils derived from to hydrocarbon fuels requires oxygen removal and molecular weight reduction. Catalytic cracking and hydrotreating are two efficient processes to upgrade bio-oil. Hydrotreating requires that hydrogen is added in the process to increase the H/C

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30

Yu, Joyleene Ruth. "Bio-oil upgrading through biodiesel emulsification and catalytic vapour cracking." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46841.

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With our limited fuel supplies struggling to keep up with our ever-increasing demand for energy, and the rising trend towards sustainable and cleaner technologies, the need to harness the potential of bio-oil as an alternative source of energy has never been more compelling. Although crude bio-oil can already be utilized to supplement heating oils and boiler fuels, its greater value lies in its potential as a source of transportation fuels and chemicals after upgrading. In collaboration with Diacarbon Energy Inc., the main objectives of this project were twofold: (1) investigating the effect

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31

Crynes, Lawrence Lee. "Development of a novel monolith froth reactor for three-phase catalytic reactions /." Access abstract and link to full text, 1993. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9412289.

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32

Abu, Bakar Muhammad. "Catalytic intermediate pyrolysis of Brunei rice husk for bio-oil production." Thesis, Aston University, 2013. http://publications.aston.ac.uk/20899/.

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Rice husks from Brunei were subjected via intermediate pyrolysis for bio-oil production. Two main objectives were set out for this study. The application of intermediate pyrolysis on Brunei rice husk for the production of bio-oil is the main objective of this experiment. Characterisation of the rice husks was inclusive as a pre-requisite step to assess the suitability as feedstock for production of liquid fuels. Following on from the characterisation results, a temperature of 450°C was established as the optimum temperature for the production of bio-oil. A homogenous bio-oil was obtained from

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33

Prado, Juan Luis Gomez. "Intergrated Methodology for the Modelling of Refinery Fluid Catalytic Cracking Units." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505488.

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34

Galligan, Carrie. "Catalytic Cracking of Jet Propellant-10. For Pulse Detonation Engine Applications." Thesis, Université Laval, 2005. http://www.theses.ulaval.ca/2005/22529/22529.pdf.

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Le carburant hydrocarbure JP-10 est étudié comme agent propulsif destiné aux moteurs à détonation ainsi qu’à d’autres applications concernant les vols à vitesses élevées. La précraquage catalytique du JP-10 pourrait produire un mélange d’oléfines légères plus facile à détoner. Un mélange d’hydrocarbures aliphatiques, pour la plupart légers, présente l’avantage d’être moins enclin à la carbonisation que des mélanges comportant de fortes teneurs en hydrocarbures aromatiques. Cette réaction endothermique de précraquage offre le même potentiel que celui d’un puits de chaleur trouvé dans des applic

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35

Bayraktar, Oguz. "Effect of pretreatment on the performance of metal contaminated commercial FCC catalyst." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2071.

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Thesis (Ph. D.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xvi, 214 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 199-208).

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36

Panpranot, Joongjai. "Hydrothermal aging of zeolite-based catalysts." Morgantown, W. Va. : [West Virginia University Libraries], 1998. http://etd.wvu.edu/templates/showETD.cfm?recnum=274.

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Thesis (M.S.)--West Virginia University, 1998.<br>Title from document title page. Document formatted into pages; contains xi, 84 p. : ill. Includes abstract. Includes bibliographical references (p. 64-67).

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37

Shi, Kaiqi. "Microwave-enhanced pyrolysis of biomass coupled with catalytic reforming for hydrogen production." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/30406/.

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Pyrolysis of biomass is a promising and sustainable approach to produce value-added chemicals and biofuels. In order to achieve a high yield of hydrogen-rich syngas from pyrolysis of biomass, the microwave-enhanced pyrolysis of biomass coupled with catalytic reforming was studied systematically in this research. Firstly, microwave-enhanced pyrolysis of biomass was carried out and compared with conventional pyrolysis under the same processing conditions. Characterisations of biomass, pyrolytic char, bio-oil and biogas were conducted to investigate the differences between microwave-enhanced and

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38

Yateem, Wael. "Environmental impact of fluid catalytic cracking unit in a petroleum refining complex." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8340.

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The fluid catalytic cracking (FCC) unit is of great importance in petroleum refining industries as it treats heavy fractions from various process units to produce light ends (valuable products). The FCC unit feedstock consists of heavy hydrocarbon with high sulphur contents and the catalyst in use is zeolite impregnated with rare earth metals i.e. lanthanum and cerium oxides. The catalytic cracking reaction is endothermic and takes place at elevated temperature in a fluidised bed reactor generating sulphur-contaminated coke on the catalyst. In the regenerator, coke is completely burnt producin

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39

Shehab, Amal. "The role of carbon in the catalytic isomerisation-cracking of n-alkanes." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/21028/.

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The isomerisation-cracking of n-alkanes is one of the important processes in the refining and petrochemical industries. It is considered as a sustainable process where low value hydrocarbons are upgraded into value added products. Zeolites, and metal modified zeolites, are widely utilised as solid acid catalysts in such reactions, with metals such as platinum providing the functionality to effectively dissociate hydrogen. Catalyst deactivation by coke formation is however a crucial concern associated with hydrocarbon transformations over such catalysts. Nevertheless, recent studies have shown

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40

Aldawsari, Afrah M. F. "Dielectric measurements and catalytic cracking of heavy oils using advanced microwave technologies." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:af211e33-c6a7-4fb3-8a91-47b0f7f677bc.

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The continuously growing world demands of petroleum to service the domestic and industrial electricity, transportation sectors, and its contribution to Climate Change, places onus on researchers to find more efficient methods for heavy oil (petroleum) processing. Given the enormous quantities of petroleum processed in the world, and the general prevalence of high energy cost and high carbon footprint processing technologies, there is strong interest in development of more efficient and improved unconventional processing methods. This thesis contributes to the field of unconventional processing

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41

Añez, Javier. "Modélisation de l'injection de pétrole pour les procédés FCC (Fluid Catalytic Cracking)." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMR132/document.

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Cette thèse est une entreprise commune de VINCI Technologies et du laboratoire CNRS CORIA. De nombreux injecteurs comportent une zone de mélange interne dans laquelle les phases liquides et gazeuses sont toutes deux présentes dans une proportion significative. Par conséquent, cette zone appartient à la catégorie des écoulements diphasiques denses. Pour simuler la dispersion du liquide et caractériser le spray de ces injecteurs, des modèles appropriés sont nécessaires. Les points clés de cette approche sont la dispersion du liquide qui peut être associé au flux liquide turbulent et la quantité

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Madadkhani, Shiva. "Red mud as an iron-based catalyst for catalytic cracking of naphthalene." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60118.

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Reducing the tar content in the producer gas of biomass gasification processes remains one of the main challenges in the commercialization of this technology and, hence, the development of clean and economical tar-removing technologies is becoming increasingly important. Catalytic tar removal has the advantage of avoiding expensive gas cleaning systems while maintaining the sensible heat in the producer gas. Commercial catalysts based on noble metals and metal oxides have shown good activity towards tar destruction, but are prone to rapid deactivation. This in addition to the high replacement

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Gu, Xiangyu. "Molten-salt Catalytic Pyrolysis (MSCP): A Single-pot Process for Fuels from Biomass." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-theses/504.

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A novel process for single-pot conversion of biomass to biofuels was developed called the molten salt catalytic pyrolysis (MSCP) method. The proposed single-pot MSCP process proved to be an inherently more efficient and cost-effective methodology for converting lignocellulosic biomass. In this study, several parameters that affect yield of bio-oil were investigated including carrier gas flow rate; pyrolysis temperature; feed particle size; varying types of molten salt and catalysts. Use of molten salt as the reaction medium offered higher liquid yield and experiments containing ZnCl2 showed hi

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Nugrahany, Febryana. "Modelling of Biomass Pyrolysis with Ex-situ Catalytic Upgrading for Bio-crude Production." Thesis, KTH, Materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231489.

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This study presents a techno-economic assessment of slow pyrolysis of pine sawdust continued by ex-situ catalytic upgrading. The overall process consists of six sections: feed drying, pyrolysis, vapor filtration, ex-situ catalytic upgrading, vapor quenching, and combustion of permanent gas. In the process simulation, biomass is objected to slow pyrolysis at 450ºC in an electrically-heated screw reactor and pyrolysis vapors is upgraded in fixed catalytic bed reactor at 425 ºC (using HZSM-5). The model is then used to investigate effects of feed moisture variation and type of heating source in p

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Mahmood, Asad. "Thermochemical conversion of Brewers Spent Grain combined with catalytic reforming of pyrolysis vapours." Thesis, Aston University, 2015. http://publications.aston.ac.uk/26198/.

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The brewing process is an energy intensive process that uses large quantities of heat and electricity. To produce this energy requires a high, mainly fossil fuel consumption and the cost of this is increasing each year due to rising fuel costs. One of the main by-products from the brewing process is Brewers Spent Grain (BSG), an organic residue with very high moisture content. It is widely available each year and is often given away as cattle feed or disposed of to landfill as waste. Currently these methods of disposal are also costly to the brewing process. The focus of this work was to inves

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Brillis, Aristidis. "Catalytic cracking of C8 aliphatic hydrocarbons over ultrastable Y zeolite and its deactivation." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272152.

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Dufreche, Stephen Thomas. "Effect of phosphorous poisoning on catalytic cracking of lipids for green diesel production." Diss., Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-04022008-220330.

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Smith, Gordon Christopher. "Catalytic cracking of n-alkanes and n-alkylbenzenes over H-ZSM-5 zeolite." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12550.

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Fällén, Holm Dennis. "Hydrodeoxygenation of Pyrolysis Oil: Comparing an Iron-based Catalyst with Dolomite." Thesis, KTH, Skolan för kemivetenskap (CHE), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217791.

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This thesis evaluates the possibility to use a iron-based catalyst as a pyrolysis vapour conversion catalyst. The iron catalyst was also compared with the mineral dolomite. The experiments were facilitated at Cortus Energy's demonstration plant in Koping, Sweden, by in situ instal- lation of the experimental setup to an outlet of the pyrolyser unit. The pyrolysis vapour from Cortus Energy was converted for a total of 8 hours by passing it through a packed bed reactor containing the iron-based catalyst while sampling gas and oil from the feed for analysis. The outset for the operation on the do

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Carriel, Schmitt Caroline [Verfasser]. "Catalytic upgrading of fast pyrolysis bio-oils applying nickel-based catalysts / Caroline Carriel Schmitt." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1225401259/34.

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