Publication

Process Simulation, Thermal and Economic Assessment of Several Technical Options for BTL Productions

Martin Gassner, Guillaume Boissonnet
2008
Conference Papers

Abstract

A study comparing several technical options for producing Fischer-Tropsch fuel by biomass gasification has been performed. Each step of the process has been simulated using ProsimPlus, a process simulation software: gasification, gas cleaning, FT synthesis. Three technical options for gasification have been studied, i.e. fluidised bed followed by high temperature reactor with either oxygen or electricity input and entrained flow reactor. Downstream gasification, gas cleaning, FT synthesis and tail gas valorisation (IGCC use) remain unchanged. A recycling of FT tail gas by steam reforming is also considered as an option. Elements of energy integration have been taken into account. Some elements of economic assessment are also given. At the end of the study, the main conclusions are: (i) recycling leads to better mass and energy efficiencies; (ii) electricity production may not be the best solution; (iii) the cleaning step is one of the most energy consuming steps.

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https://infoscience.epfl.ch/entities/publication/46b19493-f2ab-4ad3-b91f-c40666d7cd5b

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Martin Gassner, Guillaume Boissonnet
2008
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/46b19493-f2ab-4ad3-b91f-c40666d7cd5b

About this result

Related concepts (29)

Gasification

Gasification is a process that converts biomass- or fossil fuel-based carbonaceous materials into gases, including as the largest fractions: nitrogen (N2), carbon monoxide (CO), hydrogen (H2), and carbon dioxide (). This is achieved by reacting the feedstock material at high temperatures (typically >700 °C), without combustion, via controlling the amount of oxygen and/or steam present in the reaction. The resulting gas mixture is called syngas (from synthesis gas) or producer gas and is itself a fuel due to the flammability of the H2 and CO of which the gas is largely composed.

Coal gasification

In industrial chemistry, coal gasification is the process of producing syngas—a mixture consisting primarily of carbon monoxide (CO), hydrogen (), carbon dioxide (), methane (), and water vapour ()—from coal and water, air and/or oxygen. Historically, coal was gasified to produce coal gas, also known as "town gas". Coal gas is combustible and was used for heating and municipal lighting, before the advent of large-scale extraction of natural gas from oil wells.

Plasma gasification

Plasma gasification is an extreme thermal process using plasma which converts organic matter into a syngas (synthesis gas) which is primarily made up of hydrogen and carbon monoxide. A plasma torch powered by an electric arc is used to ionize gas and catalyze organic matter into syngas, with slag remaining as a byproduct. It is used commercially as a form of waste treatment, and has been tested for the gasification of refuse-derived fuel, biomass, industrial waste, hazardous waste, and solid hydrocarbons, such as coal, oil sands, petcoke and oil shale.

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