Literatura académica sobre el tema "Massa- och pappersindustri"
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Tesis sobre el tema "Massa- och pappersindustri"
Augustsson, Jimmy y Jonathan Högfeldt. "Produktion av polyhydroxyalkanoater (PHA) av avloppsvatten från massa och pappersindustri : En studie kring bakteriernas förmåga att ackumulera PHA beroende på sammansättning av karboxylsyror". Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-80660.
Texto completoRudenko, Yulia. "Reglering av pumpar: En fallstudie med jämförelseanalys mellan stryp- och frekvensreglering". Thesis, Uppsala universitet, Industriell teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-448335.
Texto completoToday's need for energy efficiency places high demands on the industrial sector, which is considered to be the largest energy consumer. Holmen AB is a pulp and paper producer. Pulp and paper production is an energy-intensive branch where pump applications consume large amounts of energy while playing a crucial role in the production process. This study was conducted to help the company investigate what energy and cost savings can be expected if the existing pump control method is changed. The purpose of the study was to develop an approach for estimating pump energy consumption, which would produce a basis for comparative analysis of energy consumption for different control methods. The study focuses mainly on centrifugal pumps, which dominate the industrial environment due to their robust construction, high efficiency, and relatively low maintenance needs. However, this study's approach can be used to assess different types of pumps and control modes as it is based on the fundamental fluid mechanics laws. At the beginning of the study, the key parameters that affect energy consumption in centrifugal pumps were identified to be later used in calculations. Pump control methods were discussed based on the existing literature and research. Estimation of energy consumption and costs was performed for two different control methods, throttle control, and frequency control. In the last stage of the study, two control methods were compared based on the energy consumption calculation to determine whether there is a potential for energy and cost savings when switching from throttle control to frequency control. The results show that usage of frequency control would lead to energy savings and, therefore, to savings in annual operating costs and LCC costs. The amount of the savings depends on the reduction in the rotational speed of the motor. The frequency control is most advantageous when there is a significant difference between the desired flow and the nominal flow in the system. But the potential reduction of motor and pump efficiency must be taken into consideration. A more detailed analysis of energy consumption for different flows and different types of pulp is recommended, with practically measured energy consumption values.
Björklund, Elina y Nina Gimström. "Effektivitetsförbättringar i interna serviceprocesser : En fallstudie inom massa- och pappersindustrin". Thesis, Högskolan i Gävle, Industriell ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-24685.
Texto completoHarbäck, David y Katarina Carlsson. "Investeringsstrategier för en bransch i motvind : Exempelbransch europeiska massa- och pappersindustrin". Thesis, Linköpings universitet, Företagsekonomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71429.
Texto completoAgnes, Höglund. "Digitalisering åt skogen : Så har internet påverkat den svenska massa- och pappersindustrin". Thesis, Uppsala universitet, Företagsekonomiska institutionen, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447866.
Texto completoHolmgren, Linnéa y Nina Viebke. "Total Productive Maintenance inverkan på reservationsprocessens effektivitet : En fallstudie inom massa och pappersindustrin". Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27536.
Texto completoJönerfall, Alexander y Lukas Fritz. "Samkoordinerade inköp för organisationer med kundanpassade projekt : En explorativ fallstudie inom massa- och pappersindustrin". Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78936.
Texto completoIn manufacturing companies, the purchase cost can account for 60-80 percent of the total product cost. The high purchase cost emphasizes the importance of identifying a cost-effective purchasing strategy that reduces the total cost of purchasing. Such a purchasing strategy can be to purchase larger order volumes in order to obtain quantity discounts. Previous research on quantity discounts is centered on the purchase of standard components in large volumes, thus a lack of research on quantity discounts for organizations that do not apply this type of purchase exists. Therefore, this study aims to examine how a larger order volume with coordinated purchases affects the total cost of purchasing for an organization with high customer customization and low annual order volume. It was done with an exploratory case study of an organization that operates according to engineer-to-order (ETO) with large-scale projects, high customer customization and low annual order volume. The data collection in the case study consisted of a mixed-method approach that includes a dominant qualitative phase followed by an underlying quantitative phase. The collected data was further used in a cost analysis to evaluate how identified factors affected the organisation's total cost of purchasing and whether coordinated purchases can be considered a cost-effective purchasing strategy in this context. The result of the study shows that the purchase price is reduced, and the inventory cost is increased by coordinated purchases for organizations with high customer customization and low annual order volume. The purchasing organization can affect the factors: order volume and design of items, which results in a cost change for the supplier’s factors: manufacturing, materials, transport and administration. The cost analysis shows that a cost reduction is achieved through coordinated purchases for the studied organisation. Some uncertainties about the result arises as coordinated purchases create a new situation for inventory management where cost data is missing. The synergies of coordinated purchasing can further be enhanced by a shift towards single sourcing, centralized purchasing and increased degree of standardization. The main contribution of the study is the identification of factors in the suppliers' operations that are affected by the combination of coordinated purchases and the characteristics of ETO, and how they generate quantity discounts.
Eriksson, Lisa y Petter Kjellsson. "Användarinvolveringens betydelse föranvändartillfredsställelsen : Hur påverkar användarinvolvering under förvaltningsfasenanvändarnas tillfredsställelse med informationssystem inommassa- och pappersindustrin?" Thesis, Mittuniversitetet, Institutionen för data- och systemvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-43255.
Texto completoInom massa- och pappersindustrin har den mänskligadimensionen vid design av informationssystem underskattasoch förbisetts. Forskningen indikerar även att det finns ettglapp gällande användarinvolvering i förvaltningsfasen.Därför är studiens syfte att undersöka huranvändarinvolvering i förvaltningsfasen av ett system påverkar användartillfredsställelsen inom massa- ochpappersindustrin. Studien har en deduktiv ansats medkvalitativ metod. Baserat på det teoretiska ramverketutformades en sambandsmodell som visar fem viktigafaktorer inom användarinvolvering, som påverkaranvändartillfredsställelsen; användarens möjlighet attinvolveras, användarens inflytande, kommunikation mellananvändare och utvecklare, användarens inställning till systemetoch organisations- och ledningskultur. Vi har intervjuat 8användare av systemet PaperLine, inom två olikayrkeskategorier och fabriker. Analysen visade att dencentrala faktorn var kommunikation med IT-personal, då dettavar relevant inom samtliga områden av studien.Organisations- och ledningskulturen måste aktivt uppmuntrainvolvering i systemutvecklingsarbetet för att användarenska få en möjlighet att involveras, detta ökar i sin turanvändarens inflytande vilket leder till att användaren får enpositiv inställning till systemet. Fynden resulterade i en nymodell kallad K-OLMII, som visar användarinvolveringenseffekt på användartillfredsställelsen i förvaltningsfasen, viaidentifierade framgångsfaktorer för användarinvolvering.
Sundin, Timmy. "Environmental regulation in the Swedish pulp and paper industry : An econometric analysis of the effectiveness of performance standards". Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-64136.
Texto completoSyftet med denna studie är att analysera effektiviteten av miljöregleringen av vattenbaserade utsläpp inom den svenska massa- och pappersindustrin. Dessutom avser denna studie att analysera om det finns några effektivitetsskillnader före och efter omstruktureringen av den svenska regleringsprocessen år 1999. Studien behandlar även effekten av anpassningsperioder i regleringsprocessen. Metoden är ekonometrisk och baseras på en "fixed-effect" panel datamodell. Datamaterialet består av 1 689 unika observationer från 21 svenska massa- och pappersbruk under åren 1980 - 2013 avseende utsläpp, gränsvärden och produktionsnivåer. Resultatet visar att miljöregleringen har varit effektiv i den meningen att utsläppen har minskat med införandet av gränsvärden. Dessutom, perioden innan 1999 visar en större utsläppsreduktion än perioden efter 1999. Till sist, resultaten indikerar att användandet av anpassningsperioder verkar ha bidragit till större utsläppsreduceringar i jämförelse till de fall där dessa perioder inte beviljades.
Rosendal, Linnea. "Biogent kol i träbaserade produkter från svensk skogsindustri och kolets inbindningstid : En analys av potentialen att öka inbindningstiden i det årliga tillskottet av produkter". Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415431.
Texto completoThe levels of greenhouse gases have increased drastically over the past hundred years as a result of human activity. Major actions are needed to counter climate change, if the consequences are not to be too great. Carbon dioxide is one of the most important greenhouse gases and the forest is an important part of the balance of carbon dioxide in the atmosphere, by the fact that plants and trees bind carbon dioxide and store biogenic carbon in the biomass. Roundwood can be used to produce a variety of products with different applications and varying life spans and there are both global and national goals that support a work to reduce climate change with forest resources as tools. The aim of the thesis was to analyse the storage of biogenic carbon in the annual addition of wood-based products from the Swedish forest industry, and then to investigate the potential to increase the time of storage. The UN Climate Panel (IPCC) has developed a general method for calculating the storage of carbon in harvested wood products and the calculations is based on three product categories, which are sawn wood, wood-based panels and paper and paperboard. This thesis has expanded the UN climate reporting by studying a total of sixteen product categories. The flow of carbon was studied using a material flow analysis, which is based on the mass balance of inputs and outputs in a system. The system was studied from the raw material being consumed until the products are defined as waste and incinerated. The calculations were based on statistics on raw material consumption in the sawmill industry and the pulp and paper industry, as well as production volume of fibre pulp and wood-based products. A large volume of biomass also goes directly to incineration and provides bioenergy. The binding time of biogenic carbon was analysed to explore the potential of increasing the binding time, using different strategies. Sawn timber products from the sawmill industry have the longest average life span and also bind the highest amount of biogenic carbon. Biofuels have the shortest average life span, which means that carbon dioxide is released into the atmosphere rapidly. A total of 29.0 million tonnes of carbon dioxide are stored in wood-based products annually, according to this study. Three strategies to extend the storage time of biogenic carbon were studied in this study, which were extended life span of the products, cascading wood use and so called BECCS. To extend product life means introducing recycling of, for example, cellulose-based textiles. Cascading wood use means that the forest industry primarily produce long-lived products and avoid biomass going directly to incineration. BECCS is based on the fact that trees bind carbon dioxide in their biomass and when wood-based product is incinerated, the carbon dioxide is stored in the ground. BECCS is considered to be the most advanced strategy, of the three.
Libros sobre el tema "Massa- och pappersindustri"
Nilsson, Jan-Evert. Svensk massa- och pappersindustri i förändring: Underlag för en nationell Fou-strategi. [Stockholm]: Industridepartementet, 1991.
Buscar texto completoindustriverk, Sweden Statens. Massa- och pappersindustrins returpappersförsörjning. Stockholm: Statens industriverk, 1988.
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