生物炭
热解
吸附
燃烧热
化学
催化作用
化学工程
热解油
废物管理
核化学
制浆造纸工业
有机化学
材料科学
吸附
燃烧
工程类
作者
Yanhua Li,Long Wu,Qing Xu,Zhanyong Li
出处
期刊:International Journal of Chemical Reactor Engineering
[De Gruyter]
日期:2024-02-08
卷期号:22 (3): 311-321
标识
DOI:10.1515/ijcre-2023-0107
摘要
Abstract In order to promote the yield and calorific value of combustible gas products in the pyrolysis, a CaO-based biochar (CSC) derived from waste crab shell was used as a low-cost sorption-enhanced catalyst to enhance oil-fried sludge (OS) pyrolysis. The effects of CSC addition and pyrolysis temperature on OS pyrolysis characteristics were analyzed in detail. The results indicated that adding CSC significantly enhanced OS pyrolysis and produced more combustible gas products with CO 2 removal. At 700 °C, adding CSC promoted the combustible gas yields and greatly reduced CO 2 by 96.9 %. And the corresponding LHV of pyrolysis gas products increased by 26.8 % and reached up to 33.7 MJ/N m 3 . Additionally, TG-FTIR analysis revealed that adding CSC reduced the formation temperature of CH 4 . Importantly, although there was only 35.5 wt% of Ca in CSC, CSC exhibited almost the same sorption-catalysis-enhanced effects compared to pure CaO. These findings suggest that biochar derived from crab shell has the potential to replace CaO for enhancing sludge pyrolysis into value-added fuel products.
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