关键词: 化学链气化反应;载氧体;磷石膏;褐煤

Abstract: Syngas as the basic chemical industial material can be obtained by chemical looping gasification(CLG).Phosphogypsum as a by-product of wet process phosphoric acid industry , was used as the oxygen carrier.The influences of SiO 2 , Al2 O3 and Fe2 O3 in phosphogypsum of chemical -looping combustion process on the output of syngas though the thermogravimetric analysis and tube furnace under the condition of N2 and steam as gasifying agent were studied .Experimental results show that the high temperature is beneficial to the synthesis of gas output , the addition of Fe2 O3 has a significant effect on the output of CO, while adding SiO2 is more beneficial to the output of H 2 and the addition of Al 2 O3 can promote the overall output of syngas .

Key words: chemical looping gasification;oxygen carrier;phosphogypsum;lignite