污泥煤浆气化制氢工艺研究

介绍污水处理厂剩余污泥与煤制成污泥煤浆进行气化制氢的方法和流程,分析其经济性和可靠性。研究发现,污泥煤浆气化出口合成气有效气约为80%,冷煤气效率约为72%,合成气产出率约为86%。污泥煤浆制氢能耗约为20.5GJ/1000m3H2,污泥添加量每增加5%,单位制氢能耗增加1.5%。采用污泥煤浆制氢,主要原料成本约920元/1000m3H2,且随着污泥添加量的增加,制氢成本下降。采用污泥制氢能处理到非常难于处理的废弃物,具有很好的经济效益和环境效益。

STUDY OF HYDROGEN PRODUCTION PROCESS FROM SLUDGE COAL SLURRY GASIFICATION

Both the method and the process flows for producing hydrogen through the gasification of sludge coal slurry made of excess activated sludge from sewage treatment plant and coal are introduced and the economy and reliability thereof analyzed.It has been found from the study that the effective gas at the outlet of sludge coal slurry gasifier amounts to approximately up to 80%,the cold gas efficiency is 72% and the syngas yield is 86%.The energy consumption in hydrogen production by sludge coal slurry gasification is 20.5 GJ/1 000 m3 H2.With each 5% increase of sludge addition,the energy consumption per unit hydrogen-making increases about 1.5%.For the hydrogen production by sludge coal slurry gasification,the cost of main raw materials is about RMB$920.00/1 000 m3 H2 and with the increase of sludge addition,the cost decreases.Hydrogen-making by taking sludge may treat the wastes difficult to deal with in some other process and thus have good economic and environmental benefits.