Academic literature on the topic 'Coal-tar'

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Journal articles on the topic "Coal-tar"

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Jackson, Edward M. "Coal Tar." Journal of Toxicology: Cutaneous and Ocular Toxicology 15, no. 4 (January 1996): 299–300. http://dx.doi.org/10.3109/15569529609042729.

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Wang, Fang, Jun Li Zhang, Ying Chen, Qing Ming Luo, and Yong Li Hao. "Current Status of Comprehensive Use and Management Recommendations of Coal Tar in China." Applied Mechanics and Materials 768 (June 2015): 82–88. http://dx.doi.org/10.4028/www.scientific.net/amm.768.82.

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Based on dry distillation temperature and properties, coal tar can be divided into high temperature coal tar and medium & low temperature coal tar. This paper introduces current status of generation and comprehensive use of high temperature coal tar and medium & low temperature coal tar in China, analyzes poor practice and management problems in the process of comprehensive use of coal tar, and puts forward countermeasures and recommendations for comprehensive use of coal tar in China.
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Reddy, Konda Sireesha, and Ravi Kumar Chittoria. "Coal Tar Burns: Our Experience." New Indian Journal of Surgery 11, no. 1 (2020): 35–38. http://dx.doi.org/10.21088/nijs.0976.4747.11120.4.

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Zhang, Jun Xia. "Review of Coal Tar Preparation and Processing Technology." Advanced Materials Research 619 (December 2012): 286–89. http://dx.doi.org/10.4028/www.scientific.net/amr.619.286.

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To generate coal tar with coal is the key technology of coal chemical industry, the generated coal tar is one of the important industry fuel and chemistry raw materials, and more attentions were attracted in coal tar preparation and processing technologies in recent years. Therefore, review of the updated technologies is developed at the present work. As for coal tar preparation technology, coal carbonization processing and coal hydropyrolysis are mature and has been applied to industry production. In comparison, hydrogenation of coal tar is just at the development. In term of coal tar processing technology, the present leading directions are how to manufacture clean fuel as well as phenol. Based on the status of coal tar preparation and processing technology, resources recycling use isn’t enough, consumptions of per ton coal is higher, environmental pollution is serious, and deep processing technology of coal tar needs to be raised.
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Geng, Ceng Ceng, Shu Yuan Li, Shao Hua Liu, Ji Li Hou, and Wen Zhi Shang. "Flash Pyrolysis of Coal with Solid Heat Carrier in a Fluidized Bed." Advanced Materials Research 953-954 (June 2014): 1153–56. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.1153.

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Flash pyrolysis of Shenmu coal with solid heat carrier was carried out in a fluidized bed using semi-coke as the solid heat carrier and nitrogen as the carrier gas. The effects of pyrolysis temperature, reaction time and mass ratio of heat carrier to coal on the yields of products were studied. It is found that the best operating conditions involving pyrolysis temperature 550°C, reaction time 6 min and mass ratio of heat carrier to coal 2. The properties of coal tar from fluidized bed, such as density, viscosity, freezing point, carbon residue and hydrogen carbon atom ratio, are almost higher than that of the above water coal tar and lower than that of the below water coal tar, while the above and below water coal tar obtained from Sanjiang squared retort. The results of simulation distillation show that gasoline and diesel fractions of coal tar from fluidized bed are higher than that of below water coal tar and lower than that of above water coal tar, while the heavy oil fraction is opposed.
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Chen, Bo, Bo Liu, and Zhangming Shi. "Combustion Characteristics and Combustion Kinetics of Dry Distillation Coal and Pine Tar." International Journal of Aerospace Engineering 2020 (November 26, 2020): 1–7. http://dx.doi.org/10.1155/2020/8888556.

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The samples of dry distillation pine tar and coal tar were investigated by TG-DTG-DSC, and the combustion characteristics and combustion kinetics of the samples were studied. The results show that there exist two significant mass loss peak and endothermic peak in the combustion of dry distillation coal tar and pine tar, which, respectively, means the volatile hydrocarbon combustion and heavy hydrocarbon combustion. At the first DTG peak range, the activation energy of dry distillation pine tar and coal tar is about the same at the initial stage (before DTG peak). Activation energy of the dry distillation pine tar increases sharply while that of dry distillation coal tar has little changes on the subsequent stage (after DTG peak). Dry distillated coal tar has better ignition performance, combustible characteristic, combustible stability, and integrated combustion characteristic, but difficult to burnout compared to the dry distillation pine tar.
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Imangazy, A. M. "OBTAINING MESOPHASE PITCHES FROM COAL TAR." Chemical Journal of Kazakhstan 74, no. 2 (June 30, 2021): 14–20. http://dx.doi.org/10.51580/2021-1/2710-1185.24.

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This article presents the results of research on mesophase pitch production from coal tar. The preparation of mesophase pitch was carried out by heat treatment in an argon atmosphere at temperatures of 300, 350, and 400 °C. The resulting carbon pitches were analyzed by scanning electron microscopy, Raman spectroscopy, and energy-dispersive analysis. An increase in the degree of surface degradation and the number of mesophase centers per unit area was observed with an increase in the treatment temperature to 300 °C. At 350 °C, a transition from an isotropic to an anisotropic structure was observed, where the mesophase centers were about 2 μm in size. A similar anisotropic structure was observed for a sample of coal tar obtained at 400 °C, and in some areas, a layered structure was observed, which could be associated with an increase in the graphitization degree of the samples. The particle size of the mesophase increases to 3.5-5 microns. The results of energy dispersive analysis showed that an increase in temperature leads to a decrease in the sulfur content. At 400 °C, sulfur is completely removed from the coal tar pitch composition. A correlation between the heat treatment temperature and the structure of the obtained pitch was established.
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Golovashov, I. A., D. I. Alekseev, and A. V. Shvaleva. "Electric dehydration of coal tar – a by-product of coke production for blast furnace smelting." iPolytech Journal 28, no. 2 (July 4, 2024): 360–70. http://dx.doi.org/10.21285/1814-3520-2024-2-360-370.

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The aim of the study was to adapt the technology of electric dehydration of oil for use with coal tar (a by-product of coke production for blast furnace smelting) in order to remove ash (tar decanter sludge) and water. The research focuses on coal tar generated in coke ovens, which forms a colloidal system with water and ash. The method of electric dehydration was employed in the study, which is currently used to remove water from the oil–water colloidal system. The construction of the 2-EG-160-2 electric dehydrator was examined, along with the specifics of introducing coal tar into it in comparison to oil. It was demonstrated that, under the proposed operational conditions for the electric dehydrator, the coal tar and tar decanter sludge would settle at the bottom of the unit due to their higher density than that of water (the density of coal tar is approximately 1200 kg/m3 and higher). A scheme for integrating the electric dehydrator into the de-ashing process at a coke-chemical plant was proposed. The process of separating coal tar in the electric dehydrator was calculated. The results demonstrated that the efficiency of the equipment in the dehydration of coal tar, in comparison to oil, is considerably lower due to its higher density and viscosity (approximately 40 times higher at 80°C). Consequently, the performance of the electric dehydrator for coal tar would be approximately 40,000 tons, as opposed to approximately 1 million tons for oil. Nevertheless, the aforementioned performance per electric dehydrator is sufficient to meet the dehydration needs of AO “Ural Steel” for coal tar. Therefore, it is recommended that the electric dehydrator be integrated into the general coal tar dehydration scheme in order to ensure that the required quality standards for the tar are met, allowing it to be used and sold as a target product.
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van Schooten, Frederik-Jan, and Roger Godschalk. "Coal Tar Therapy." Drug Safety 15, no. 6 (December 1996): 374–77. http://dx.doi.org/10.2165/00002018-199615060-00002.

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&NA;. "Coal tar therapy." Drugs & Therapy Perspectives 9, no. 11 (June 1997): 15–16. http://dx.doi.org/10.2165/00042310-199709110-00005.

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Dissertations / Theses on the topic "Coal-tar"

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King, Nathan D. "Chemical and physical modification of petroleum, coal-tar, and coal-extract pitches by air-blowing." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=3561.

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Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains viii, 181 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 107-112).
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Griffin, Thomas Paul. "Intrapartical secondary reactions of tar during bituminous coal pyrolysis." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14189.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
GRSN 408655
Science hard copy bound in 2 v.
Includes bibliographical references (leaves 255-261).
by Thomas Paul Griffin.
Ph.D.
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Kong, Lingjun. "Characterization of Mineral Oil, Coal Tar and Soil Properties and Investigation of Mechanisms That Affect Coal Tar Entrapment in and Removal from Porous Media." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5093.

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Mineral oils and coal tars are complex nonaqueous phase liquids (NAPLs), which can serve as long-term sources of ground water contamination. Very limited data are available on mineral oil and coal tar entrapment in and removal from porous media. Thus, the objectives of this research were to evaluate the behavior of these NAPLs in porous media, and investigate the mechanisms governing NAPL entrapment in and recovery from porous media. Quantification of properties of three commercial mineral oils and six MGP coal tars reveals that mineral oils are slightly viscous LNAPLs (density: ~0.88 g/cm3; viscosity: 10-20 cP), whereas coal tars are highly viscous DNAPLs (density: 1.052-1.104 g/cm3; viscosity: 32-425 cP). Measured oil (tar)-water interfacial tensions (IFT) were lower than that of pure NAPLs. Properties of 16 field soil samples (soil particle size distribution, specific surface area, total carbon content, cationic exchange capacity and soil moisture release curves) were characterized. Correlations between residual NAPL saturation and NAPL and soil properties were developed, and show that the entrapment of NAPL dependent upon soil particle size distribution, total carbon content, NAPL viscosity and NAPL-water IFT. Aqueous pH and ionic strength were found to influence the interfacial properties in tar-water-silica systems. At pHs greater than 7.0, observed reduction in contact angle were attributed to the repulsive electrostatic force between coal tar and solid surface. When pH less than 4, hydration forces played a role on the contact angle decrease. The IFT reduction was resulted from the accumulation of surface-active molecules at the tar-water interface. The effect of ionic strength on interfacial properties was not significant below 0.5 M. The effects of temperature and surfactant or surfactant/polymer addition on coal tar removal was investigated by conducting coal tar displacement experiments at three different temperatures (22, 35, and 50??with sequential flushing of water, surfactant and surfactant/polymer. Coal tar removal from porous media was enhanced by elevating temperature and surfactant flushing due to the viscosity and IFT reduction, respectively. Xanthan gum was used as the polymer to increase the viscosity of the displacing fluid. In summary, these results provide tools for the prediction of NAPL entrapment in porous media, and for the selection of remediation strategies for coal tar contaminated source zone.
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Twigg, Anthony Nicholas. "The characterisation and modification of binders used in the manufacture of carbon anodes." Thesis, University of Wolverhampton, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329130.

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King, Mark William George. "Migration and natural fate of a coal tar creosote plume." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq21360.pdf.

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Chang, Cliff Cheng-Shiou. "Thermal reactions of freshly generated coal tar over calcium oxide." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/15046.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1986.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND SCIENCE.
Bibliography: leaves 351-363.
by Cliff Cheng-Shiou Chang.
Ph.D.
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Behrouzi, Mahtab. "Petroleum asphaltenes and coal tar pitch : a structural and interfacial study." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436342.

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Takekawa, T. "Chemistry of mesophase formation." Thesis, University of Newcastle Upon Tyne, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379323.

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Kithinji, Jacob P. "Extraction and chromatography of supercritical fluids." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329092.

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O'Brien, Robert John. "Tar production in coal pyrolysis : the effect of catalysts, pressure and extraction." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/47459.

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Books on the topic "Coal-tar"

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United States. Dept. of Health and Human Services., United States. Public Health Service., United States. Agency for Toxic Substances and Disease Registry., and Research Triangle Institute, eds. Toxicological profile for wood creosote, coal tar creosote, coal tar, coal tar pitch, and coal tar pitch volatiles. [Atlanta, Ga.]: The Dept., Public Health Service, The Agency, 1996.

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Corporation, Syracuse Research, ed. Toxicological profile for wood creosote, coal tar creosote, coal tar, coal tar pitch, and coal tar pitch volatiles. [Atlanta, GA]: U.S. Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 2002.

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Melber, C. Coal tar creosote. Geneva: World Health Organization, 2004.

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Ontario. Ministry of the Environment. Coal tar waste sites. [Toronto]: Environment Ontario, 1991.

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Ontario. Ministry of the Environment. Coal tar waste sites. Toronto]: Environment Ontario, 1991.

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Ontario. Ministry of the Environment. Waste Management Branch. Coal tar waste sites. S.l: s.n, 1988.

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Lazorin, S. N. Kamennougolʹnai͡a︡ smola: Poluchenie i pererabotka. Moskva: "Metallurgii͡a︡", 1985.

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Branch, Ontario Waste Management. Inventory of industrial sites producing or using coal tar and related tars in Ontario. Toronto: Intera Technologies, 1988.

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Branch, Ontario Waste Management. Inventory of industrial sites producing or using coal tar and related tars in Ontario. Toronto: Intera Technologies, 1988.

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1944-, Bolten J. G., Electric Power Research Institute, and Rand Corporation, eds. Health risk from a coal tar disposal site. Santa Monica, CA: Rand Corp., 1988.

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Book chapters on the topic "Coal-tar"

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Gooch, Jan W. "Coal Tar." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2484.

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Gooch, Jan W. "Coal Tar Colors." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2485.

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Gooch, Jan W. "Coal Tar Epoxy." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2486.

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Gooch, Jan W. "Coal Tar Hydrocarbons." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2488.

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Gooch, Jan W. "Coal Tar Pitch." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2489.

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Gooch, Jan W. "Coal-Tar Resin." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2491.

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Gooch, Jan W. "Coal Tar Epoxy Coating." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2487.

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Gooch, Jan W. "Coal Tar Pitch Coatings." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2490.

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Gooch, Jan W. "Coal Tar-Urethane Coating." In Encyclopedic Dictionary of Polymers, 149. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2492.

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Wombles, Robert H., and Melvin D. Kiser. "Developing Coal Tar/Petroleum Pitches." In Essential Readings in Light Metals, 246–50. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48200-2_32.

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Conference papers on the topic "Coal-tar"

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Dehua, Li, and Li Zhaoxin. "Terahertz Spectroscopy of Gas-Fat Coal and Coal Tar." In International Symposium on Ultrafast Phenomena and Terahertz Waves. Washington, D.C.: OSA, 2016. http://dx.doi.org/10.1364/isuptw.2016.im2a.3.

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Popova, Anna N., Sergey A. Sozinov, and Kseniya A. Korchuganova. "Asphaltene thin films obtained from coal-tar pitch." In MATHEMATICS EDUCATION AND LEARNING. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0098865.

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Viswanathan, Vignesh. "Bespoke, High-Purity Coal Tar with Microwave Plasma Pyrolysis." In 37th Annual International Pittsburgh Coal Conference (IPCC 2020). September 8-11, 2020. US DOE, 2020. http://dx.doi.org/10.2172/1804882.

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Shoenberger, James E. "A New Test Method for Coal-Tar Sealer Mixtures." In 27th International Air Transport Conference. Reston, VA: American Society of Civil Engineers, 2002. http://dx.doi.org/10.1061/40646(2003)12.

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Jia, L., E. J. Anthony, and Richard Turnbell. "Treatment of Sydney Tar Pond Sludge in CFBC." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78123.

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Test burns of mixtures of Sydney tar pond sludge and coal were carried out using CETC’s mini-circulating fluidized bed combustor (mini-CFBC). The goal was to determine if CFBC technology could be used to treat the tar pond sludge. During the tests, CO2, O2, CO, SO2, and NOx in the flue gas were monitored continuously. Stack gas sampling was carried out for HCl, metals, particulate matter, VOCs, total hydrocarbons, semi-volatile organic compounds, dioxins and furans and PCBs. Results showed that HCl, Hg, particulate matter, PCDD/Fs and metal concentrations were all below both the current limits and the gas release limits to be implemented in 2008 in Canada. Sulphur capture efficiency was about 89–90%. The percentage of fuel nitrogen converted to NOx was of the order of 4.7 to 6.1, which is significantly lower than that of conventional pulverized coal-fired boilers and well within normal range of FBC boilers. PCB and PAH emissions levels were comparable or lower than levels reported in the literature for industrial-scale FBCs. VOC concentrations were low except for benzene, for which the concentration was higher than that reported for utility-scale FBC and pulverized coal-fired boilers. In addition, CO concentration was high at 1200 to 2200 ppm. However, these CO concentrations are typical of CETC’s mini-CFBC firing coal. The trials showed that, for 10% by weight tar pond sludge mixed with 90% by weight coal, the combustion was both stable and efficient. The tests demonstrated that CFBC technology could be an environmentally sound option for eliminating wastes from the Sydney tar pond.
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Zhang, Guojie, Xiaojie Guo, Yongfa Zhang, Yaling Sun, and Bo Tian. "Fuel Oil Prepared by Blending Heavy Oil and Coal Tar." In 2009 International Conference on Energy and Environment Technology (ICEET 2009). IEEE, 2009. http://dx.doi.org/10.1109/iceet.2009.48.

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Medupe, Amogelang, Edison Muzenda, Mpho Rapoo, Nhlanhla Nkosi, and Joshua Gorimbo. "Pyrolysis of Morupule Coal Dust for the Production of Tar." In 2019 7th International Renewable and Sustainable Energy Conference (IRSEC). IEEE, 2019. http://dx.doi.org/10.1109/irsec48032.2019.9078289.

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Marciniak, Bernard, and E. Dziwinski. "Purity and zone refining of some coal-tar aromatic hydrocarbons." In International Conference on Solid State Crystals 2000, edited by Jaroslaw Rutkowski, Jakub Wenus, and Leszek Kubiak. SPIE, 2001. http://dx.doi.org/10.1117/12.425466.

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Leblanc, Katherine E., John L. Durant, Christopher Swan, Michael J. Weaver, and Daniel C. Jansen. "Thermally Treated Coal Tar Contaminated Soil as a Concrete Aggregate." In Geo-Denver 2000. Reston, VA: American Society of Civil Engineers, 2000. http://dx.doi.org/10.1061/40519(293)4.

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Fraga, Matheus Teixeira, Bruno Deves Flores, Alessandro Gums, Ismael Vendrame Flores, Eduardo Osório, and Antônio Cezar Faria Vilela. "MICROSTRUCTURE AND CO2 REACTIVITY OF CHARCOAL IMPREGNATED BY COAL TAR." In 4th EMECR - International Conference on Energy and Material Efficiency and CO2 Reduction in the Steel Industry 2022. São Paulo: Editora Blucher, 2022. http://dx.doi.org/10.5151/5463-5463-35081.

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Reports on the topic "Coal-tar"

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Das, Sujit, and Prashant Nagapurkar. Sustainable Coal Tar Pitch Carbon Fiber Manufacturing. Office of Scientific and Technical Information (OSTI), May 2021. http://dx.doi.org/10.2172/1784125.

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Gaughen, C. D., David E. Pendleton, and Daniel A. Zarate. Zero VOC, Coal Tar Free Splash Zone Coating (SZC). Fort Belvoir, VA: Defense Technical Information Center, December 2010. http://dx.doi.org/10.21236/ada582341.

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John R. Gallagher. Task 1.15 - Enhanced Bioremediation of Coal Tar-Contaminated Soil. Office of Scientific and Technical Information (OSTI), February 1998. http://dx.doi.org/10.2172/1695.

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Ghoshal, S., A. Ramaswami, and R. G. Luthy. Biodegradation of naphthalene from coal tar. Research progress report. Office of Scientific and Technical Information (OSTI), February 1994. http://dx.doi.org/10.2172/10178125.

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Barlo, Thomas, and Alan Zdnek. PR-208-004-R01 Cathodic Protection Under Disbonded Coatings. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), February 1994. http://dx.doi.org/10.55274/r0011415.

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The objective of this research was to: - To quantify the relative ability of disbonded pipeline coatings to transmit cathodic-protection current and provide corrosion control to the steel beneath, - To provide a clearer understanding of the current paths that control cathodic protection to the steel under disbonded coatings, - To identify coatings that may be less restrictive to cathodic protection current, - To determine cathodic protection system designs and procedures to maximize the effectiveness of cathodic protection to the steel surface under disbonded coatings. Laboratory experiments were conducted on six, representative, pipeline anticorrosion coatings applied to steel plates with and without intentional disbondments. The six coatings studied were coal-tar enamel, asphalt enamel, coal-tar epoxy, fusion-bond epoxy, coal-tar urethane, and polyethylene tape. The 30-inch-long (76 cm) coated-steel plates were exposed to two electrolytes, a 1,000- and 8,000-ohm-cm soil leachate, and encompassed several conditions; a grit-blasted surface with no holiday in the coating, a mill-scaled surface with no holiday but with a disbondment underneath the coating, and a grit-blasted surface with a disbondment and a holiday of either 1/8" (0.3 cm) or 1" (2.54 cm) width.
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Wang, Hong, Eric Wolfe, Edgar Lara-Curzio, Marco Martinez, and Tracie Lowe. Study on Electrostatic Separation of Quinoline Insolubles from Coal Tar Pitch. Office of Scientific and Technical Information (OSTI), March 2023. http://dx.doi.org/10.2172/1960688.

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Fletcher, T. H. Determination of the forms of nitrogen released in coal tar during rapid devolatilization. Office of Scientific and Technical Information (OSTI), October 1996. http://dx.doi.org/10.2172/464294.

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Speight, J. G. Oil shale, tar sand, coal research advanced exploratory process technology, jointly sponsored research. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/6756490.

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Timpe, R. C. Energy and environmental research emphasizing low-rank coal: Task 3.9 catalytic tar cracking. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/207044.

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Thomas H. Fletcher. Determination of the Forms of Nitrogen Released in Coal Tar During Rapid Devolatilization. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/6847.

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