Effectiveness of using limestone (CaO) as a syngas durch traps
Keywords:
Limestone, CaO, Combustible gasAbstract
This research aims to determine the effect of using CaO as an adsorbent to produce environmentally friendly combustible gas using biomass waste material. The technology for producing combustible gas or syngas is an updraft gasification system using an air gasification agent. To produce syngas that are not polluted with tar or other impurities, a CaO adsorbent is used. CaO is obtained from mountains in the form of small, irregular granules research is carried out using experimental study methods. CaO is installed in the syngas outlet before the cyclone. CaO is not heated separately but uses heat from the gasification reactor. The raw materials used were rice husks and wood, a mixture composition of 100% rice husks, 75% rice husks and 25% sawdust, 50% rice husks and 50% sawdust, 25% rice husks and 75% sawdust and 100% sawdust wood. The results of this research showed that a mixture of 50% rice husk + 50% sawdust wood produced gas with a high H2 concentration and low CO where the highest H2 concentration that could be achieved was 38.95%, and the H2 content was 24.18% without using CaO absorbent materials. A high increase in H2 concentration was obtained by adsorbing CaO. The mechanism for CO2 adsorption by CaO was a heterogeneous reaction to produce CaCO3.
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