Effect of air-steam agent on co-gasification of biomass and coal

Abstract

The goal of the study is to investigate the impact of adding steam as a gasification agent for the co-gasification of biomass and coal. Study has been performed with ASPEN PLUS simulation, and has been confirmed by experimental findings. The coal and biomass ratio of 60% was gasified at an equivalent ratio of 0.29 and 0.35. The addition of steam was as much as 0%, 25%, 50%, 75%, and 100% for each equivalence ratio difference. The findings demonstrate that the best quality of fuel gasses such as CO and It is obtained by applying up to 75% steam where the temperature of the reactor can still be held at 770°C. The cold gas efficiency and carbon combustion efficiency where equivalent ratio ranged from 0.29 to 0.35 at 75% steam to air ratio are 61.2-67.3% and 77-79%, respectively. Co-gasification between coal and biomass with a combination of air and steam may technically be a replacement for biomass gasification with air.

Examination of the role and challenges of natural catalysts in hydrogen and biohydrogen production

“…Biohydrogen can be produced through water biophotolysis [14,15], dark anaerobic fermentation [16,17], photo-fermentation [18,19], and the water-gas shift reaction (WGSR) using carbon monoxide [2,20]. Advanced techniques such as pyrolysis [21,22] and gasification [23][24][25][26] can also be used to make biohydrogen from renewable materials. To make hydrogen and biohydrogen viable, methods must be developed to produce these gases in large quantities and with high hydrogen concentrations.…”