牛粪固定床气化多联产工艺

为了减少畜禽粪便自然发酵造成的温室效应和环境污染，降低养殖奶牛的成本和增加养殖奶牛的效益，该文利用自制的固、气、液（Solid, gas, liquid）多联产固定床气化炉将牛粪气化，气化可得到固体牛粪炭、可燃气、提取液三相产品，三相产品均可以资源化利用，从而达到减排、减污的目标。考察了含水率、气化温度及气化剂的当量比对气化效果的影响。结果表明：原料含水率控制在12%～18%，气化温度为850～900℃，当量比在0.25～0.30时，气化效果较好，牛粪含水率为17.78%，气化温度为850℃，当量比为0.30时，气体产率为1.42 m3·kg-1，可燃气体的低位热值为2.84 MJ·m-3，牛粪炭得率为23.82%，提取液得率是24.17%。牛粪气化多联产工艺试验为工程化实施提了基础和基本数据。

Poly-generation process for gasification of dairy manure with fixed beds

In order to reduce greenhouse effect and environmental pollution caused by natural fermentation of cow dung and also to reduce the cost and increase benefits of the dairy farming,the dairy manure was gasified using homemade fixed bed SGL gasifier.The dairy manure gasification can get three products,such as flammable gas,dairy manure carbon and pyrolysis extract liquid.These three products were recycled to achieve the goals of emission reduction and pollution control.The influences of water content,gasificat...