In order to study the effect of mass flow rate,gasification temperature and gasification pressure of gasification agent CO2 on the gasification of Dunaliella salina,the Aspen Plus software was used to simulate the pyrolysis process of Dunaliella salina in CO2 atmosphere.The results show that when Dunaliella salina is gasified in CO2 atmosphere,with the increase of CO2 mass flow rate,the H2 volume fraction firstly increases and then reduces.When the mass flow of CO2 is 350 kg/h,the volume fraction of H2 reaches a maximum of 40.06%.When the gasification temperature is increased from 400 to 900℃,the volume fraction of H2 and CO increases,and the volume fraction of CH4 decreases.When the gasification temperature is greater than 900℃,the volume fraction of H2,CH4 and CO tends to be stable.When the gasification temperature increases from 400 to 1 200℃,the higher the pressure,the more CH4 is produced,and the less H2 and CO are produced.When the gasification temperature was 700℃,the pressure has the most significant impact on gas production.Therefore,appropriately changing the mass flow of CO2 can increase the production of H2,and appropriately increasing the gasification temperature and reducing the gasification pressure can increase the production of H2 and CO.However,the production of CH4 will decrease.
biomassgasification of Dunaliella salinaCO2 gasification agentpyrolysis characteristic
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