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Recent Advancement Gasification Technology and Kinetic Modeling used Aspen Software

Abstract

Nitrogen (N₂), Carbon Monoxide (CO), Hydrogen (H₂), and carbon dioxide are the four gases that are most commonly produced during the gasification process of carbonaceous materials derived from biomass or fossil fuels. To accomplish this, the feedstock material is heated to high temperatures (typically >700°C) and subjected to a reaction in which the presence of oxygen and/or steam is controlled. Because the H₂ and CO, which make up a large portion of the mixture, are flammable, the resulting gas mixture, also known as syngas (from synthesis gas) or producer gas, is also a fuel. If the gasified compounds were produced using biomass as the feedstock, then the subsequent combustion of the resulting gas is thought to be a renewable energy source. An advantage although most gasification systems produce syngas that needs to be further processed and reformed to remove impurities and other gases like CO and CO₂, high temperature solid oxide fuel cells are able to accept mixtures of steam and methane directly. Syngas can also be used as the hydrogen source in fuel cells. Most frequently, syngas is used directly in internal combustion engines, utilized to create methanol and hydrogen, or transformed into synthetic fuel via the Fischer-Tropsch process. Gasification can reduce emissions of air pollutants like methane and particulates by replacing landfilling and incineration for specific materials. Some gasification methods are designed to remove corrosive ash components like chloride and potassium, enabling the creation of clean gas from otherwise trouble some feedstock materials. Electricity is presently produced on industrial sizes by the gasification of fossil fuels. Pollutants like SOX and NOX can be produced in lower quantities by gasification than by burning.

Jaikishor Mavai

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