Sökning: "Thermal gasification"

Visar resultat 1 - 5 av 18 uppsatser innehållade orden Thermal gasification.

1. 1. Reforming of a Tar Model Compound Using Iron Catalysts

   Master-uppsats, KTH/Processteknologi

   Författare :Celia Pérez Guijarro; [2022]
   Nyckelord :Biomass gasification; synthesis gas; tar; iron catalyst; reforming; Biomassaförgasning; syntesgas; tjära; järnkatalysator; reformering;

   Sammanfattning : Den internationella medvetenheten om hotet med växthusgaser har bidragit till en prioriterad utveckling av alternativa och rena tekniker baserade på förnybara i stället för fossila bränslen. Biomassaförgasning är en teknik för framställning av icke-fossil energigas från biomassa. LÄS MER

3. 2. Investigation of a CO-Production of Substitute Natural Gas and Biomethanol Plant Compared to Stand Alone Biomethanol Plant

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Susanne Brixland; [2019]
   Nyckelord :biomethanol; SNG; substitute natural gas; co-production; gasification; gasifier; biomass; syngas; chemical engineering; kemiteknik; Chemistry; Technology and Engineering;

   Sammanfattning : Climate change is one of humanities greatest challenges; the greenhouse gases in the atmosphere are still increasing. There is not one solution that will fix this problem several different products, raw material and technologies are required to take the steps towards a renewable society. LÄS MER

4. 3. Värmeöverföring mellan två zoner i en bubblande fluidiserad bädd

   Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

   Författare :Christian Stigsson; [2018]
   Nyckelord :Heat transfer; fluidized beds; multi-staging; Eulerian-Eulerian two-fluid; Technology and Engineering;

   Sammanfattning : In this Master's thesis, the heat transfer between two zones in a bubbling fluidized bed and the resultant temperature field were examined using a laminar Eulerian-Eulerian two-fluid model in computational fluid dynamics. The purpose was to estimate the thermal potential to multi-stage a combined heat and power boiler by integration therein of a communicating gasification reactor, which utilizes heat from the combustion, and to analyze how different construction parameters influence the homogeneity of the gas temperature field. LÄS MER

5. 4. Characterization of biomass pyrolysis and gasification using Raman Spectroscopy

   Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

   Författare :Henrik Johansson; [2018]
   Nyckelord :Raman; Raman Spectroscopy; Raman scattering; biomass; biofuel; thermal conversion; pyrolysis; gasification; laser diagnostics; laser-induced fluorescence; LIF; energy; wood pellets; ammonia; aldehydes; ketones; formaldehyde; acetaldehyde; acetone; combustion physics; Physics and Astronomy;

   Sammanfattning : This thesis examines the emissions formed during pyrolysis and gasification of lignocellulosic biomass in pellet form, using vibrational Raman spectroscopy. Seven different samples are studied during the pyrolysis process and six of these are also studied during gasification. LÄS MER

7. 5. Potential of chemical recyclingto improve the recycling of plastic waste

   Master-uppsats, KTH/Energi och klimatstudier, ECS

   Författare :Martyna Solis; [2018]
   Nyckelord :recycling; chemical recycling; plastic waste; plastic packaging; recycling rates; circular economy; Sweden; Stockholm; Stockholm Exergi; återvinning; kemisk återvinning; plastavfall; plastförpackning; återvinningsgrad; cirkulär ekonomi; Sverige; Stockholm; Stockholm Exergi;

   Sammanfattning : Chemical recycling can improve the plastic recycling rates and reduce the level of CO2 from fossil plasticsproduction. Thus, it is seen as an attractive technology in the action towards meeting the emission, circulareconomy and recycling targets. In the Swedish context, it could help reach the carbon neutrality goal by2045. LÄS MER