Modeling and Simulation of Syngas Produced From Biomass Gasification Enriched With Solar Hydrogen

Abstract

Biomass gasification process is simulated in order to determine the influence of the operating parameters on the quality of the gas produced. Furthermore, the hydrogen required to enrich the syngas is also established. The modeling and simulation showed that the gas obtained by gasification at atmospheric pressure is mainly composed of H2 and CO; however, the molar ratio H2/CO is not favorable for synthesizing fuels such as methanol. This shows the need to enrich the syngas with additional hydrogen. For the case study developed, for each 100 kg / hr of biomass waste gasified, the amount of additional hydrogen required ranges between 2 to 6 kg / hr in order to obtain a molar ratio H2/CO close to 2. Using palm fiber, the amount of hydrogen required would be 4 kg / hr. This additional hydrogen could be derived from solar energy using thermoelectric modules with an effective area of solar radiation close to 400 m2 per kg of biomass. The simulation was performed using ASPEN PLUS®.

Techno-Economic and Environmental Analysis of Ethanol Production from 10 Agroindustrial Residues in Colombia

“…This can be reflected in the amount of cellulose, hemicellulose, and sugars which make them potential feedstocks for ethanol production (by breaking the polymeric matrix and its further transformation into simple sugars assimilated by fermenting microorganisms). Table shows the average composition of the considered agroindustrial residues, which include the soluble sugars such as sucrose, glucose, and fructose. − The chemical composition of the lignocellulosic material provides an indicator on the feasibility to produce fermentable sugars as a function of the moisture content, cellulose and hemicellulose fractions. In this case, the moisture content is of great importance because it affects the effective raw material (dry matter), which can be transformed.…”