镍基催化剂对污泥微波热解制生物气效能影响

Pyrolysis of sewage sludge can achieve the goals of converting sewage sludge to resources and greatly decreasing quality. On the basis of microwave-induced pyrolysis of sewage sludge, discuss the impact on biosyngas produced by microwave-induced catylytic pyolysis of sewage sludge with nickel-based catalyst. Elementary analysis is used to measure the elements of sludge. GC and GC/MS are used to analyse on the components and yield of biosyngas. The results showed that nickel-based catalysts had significant impacts on the generation and quality of biosyngas. At 800℃ with 5% nickel-based catalyst, the production of hydrogen and carbon monoxide content reached the maximum: the production of hydrogen increased from 29g/kg to 35.8g/kg(increased by 23.4%),carbon monoxide increased from 302.7g/kg to 383.3g/kg(increased by 26.6%). Meanwhile nickel-based catalyst can improve the utilization of heat energy, making the production of biosyngas at 700℃(5% nickel-based catalyst) equal to at 800℃(no catalyst).The main working temperature range of nickel-based catalyst is 500~600℃, accelerating the release of hydrogen and carbon monoxide. Biosyngas, which is rich in hydrogen and carbon monoxide, has a big production and can help in promoting the process of sewage sludge to resources.