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

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

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

Full Length Article | Updated：2026-01-06

- Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products
- Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products
- 中国化学工程学报（英文版） 2023年53卷第1期页码：25-36
- Affiliations：
  
  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,China,100029
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2023
- Accepted：
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Xueguang Li, Mengyan Yu, Changfa Zhang, 等. Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products[J]. 中国化学工程学报（英文版）, 2023,53(1):25-36.

Xueguang Li, Mengyan Yu, Changfa Zhang, Xiangtong Li, Guangqing Liu, Jianjun Dai, Chunbao Zhou, Yang Liu, Jie Fu, Yingwen Zhang, Bang Yao. Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products[J]. Chinese Journal of Chemical Engineering, 2023, 53(1): 25-36.
Xueguang Li, Mengyan Yu, Changfa Zhang, 等. Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products[J]. 中国化学工程学报（英文版）, 2023,53(1):25-36. DOI：

Xueguang Li, Mengyan Yu, Changfa Zhang, Xiangtong Li, Guangqing Liu, Jianjun Dai, Chunbao Zhou, Yang Liu, Jie Fu, Yingwen Zhang, Bang Yao. Co-pyrolysis of soybean soapstock with iron slag/aluminum scrap, and characterization and analysis of their products[J]. Chinese Journal of Chemical Engineering, 2023, 53(1): 25-36. DOI：

摘要

Abstract

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.

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