固定床中天然气与煤联合气化制合成气反应过程的实验研究

Experimental Study on Co-gasifying of Natural Gas and Coal in a Fixed Bed for Preparation of Synthesis Gas

用固定床反应器模拟合成气制备炉,对天然气与煤联合气化反应过程进行了研究. 实验结果表明,在合成气制备炉下部主要发生甲烷和碳的氧化反应,氧气完全消耗. 合成气在制备炉内上升过程中,未转化完的甲烷继续裂解,中间产物水蒸汽和CO2被还原. 出口合成气在离开制备炉时整个炉内体系接近反应平衡.

The reaction process of natural gas and coal was investigated using a fixed-bed reactor to model the furnace for preparing synthesis gas. Experimental results indicated that oxidation of methane and carbon occurred simultaneously in the lower zone close to the furnace bottom and O2 was used up. Pyrolysis of methane and reduction of CO2 and steam took place during the rising of synthesis gas. The whole reaction system for preparation of synthesis gas nearly reached equilibrium while the synthesis gas left the outlet of furnace.