Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap,and characterization and analysis of their products  

作　　者：Xueguang Li Mengyan Yu Changfa Zhang Xiangtong Li Guangqing Liu Jianjun Dai Chunbao Zhou Yang Liu Jie Fu Yingwen Zhang Bang Yao 

机构地区：[1]State Key Laboratory of Organic-Inorganic Composites,College of Chemical Engineering,Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第1期25-36,共12页中国化学工程学报（英文版）

基　　金：supported by China-Central and Eastern Europe Universities Joint Education Project(2021128).

摘　　要：Soybean soapstock(SS) is one of the main solid wastes produced in the refinery of edible oil processing. In this study, the co-pyrolysis of SS with iron slag(IS) and aluminum scrap(AS) was carried out in a tubular furnace. The gas, liquid and solid products were characterized and the char yield decreased with increasing IS/AS ratio. IS and AS can improve the gas yield, and when the ratio of SS/IS was 1:0.25, the total pyrolysis gas and hydrogen contents were significantly increased. The content of oxygen compounds in pyrolysis oil decreased during co-pyrolysis, while AS promoted the content of polycyclic aromatic hydrocarbons in pyrolysis oil. The co-pyrolysis reaction can be divided into four stages, the mass loss rate reaches the maximum at the third stage(390–575 ℃). The molar ratio of H/C was lower for pyrolysis,indicating good stability of pyrolysis char owing to the high degree of carbonization and aromaticity.The possible co-pyrolysis reaction mechanism was explored.

关 键 词：PYROLYSIS Soybean soapstock Iron slag Aluminum scrap Adsorption CATALYST 

分 类 号：X705[环境科学与工程—环境工程]