Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
Bioresour Technol. 2016 Jun;209:142-7. doi: 10.1016/j.biortech.2016.02.136. Epub 2016 Mar 4.
The current study presents the pyrolysis characteristics of rice husk impregnated with different kinds of ammonia source (ammonium acetate, urea, ammonium sulfate and ammonium dihydrogen phosphate) in a fixed bed reactor. The introduction of ammonia source in pyrolysis process achieved the conversation from carbonyl compounds to nitrogenous heterocyclic compounds. The liquid product of urea-impregnated biomass has higher content of nitrogenous heterocyclic compounds (8.35%) and phenols (30.4%). For ammonium sulfate and ammonium dihydrogen phosphate-impregnated biomass, the quantity of compounds in liquid products reduces remarkably, and the gas products are rich in CO and H2. All the solid products of pyrolysis have great potential application in biochar-based fertilizer and activated carbon for their high N content.
本研究在固定床反应器中展示了不同氨源（醋酸铵、尿素、硫酸铵和磷酸二氢铵）浸渍稻壳的热解特性。在热解过程中引入氨源实现了从羰基化合物到含氮杂环化合物的转化。尿素浸渍生物质的液体产物中含氮杂环化合物（8.35%）和酚类（30.4%）含量较高。对于硫酸铵和磷酸二氢铵浸渍的生物质，液体产物中的化合物数量显著减少，而气体产物富含 CO 和 H2。所有热解固体产物都具有很高的 N 含量，在基于生物炭的肥料和活性炭方面具有很大的潜在应用价值。
