Comparison of steam-gasification characteristics of coal char and petroleum coke char in drop tube furnace

Lu Ding; Zhijie Zhou; Wei Huo; Guangsuo Yu

doi:10.1016/j.cjche.2014.11.032

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Comparison of steam-gasification characteristics of coal char and petroleum coke char in drop tube furnace

能源、资源与环境技术 | Updated：2026-01-06

- Comparison of steam-gasification characteristics of coal char and petroleum coke char in drop tube furnace
- Chinese Journal of Chemical Engineering Vol. 23, Issue 7, Pages: 1214-1224(2015)
- Affiliations：
  
  Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology (ECUST),Shanghai,China,200237
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.11.032
  CLC：
- Published：2015
- Accepted：
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Lu Ding, Zhijie Zhou, Wei Huo, Guangsuo Yu. Comparison of steam-gasification characteristics of coal char and petroleum coke char in drop tube furnace[J]. Chin.J.Chem.Eng., 2015, 23(7): 1214-1224.
DOI：

Lu Ding, Zhijie Zhou, Wei Huo, Guangsuo Yu. Comparison of steam-gasification characteristics of coal char and petroleum coke char in drop tube furnace[J]. Chin.J.Chem.Eng., 2015, 23(7): 1214-1224. DOI： 10.1016/j.cjche.2014.11.032.

摘要

Abstract

The steam-gasification reaction characteristics of coal and petroleumcoke (PC)were studied in the drop tube furnace (DTF). The effects of various factors such as types of carbonaceous material

gasification temperature (1100-1400 ℃) and mass ratio of steam to char (0.4:1

0.6:1 and 1:1 separately) on gasification gas or solid products were investigated. The results showed that for all carbonaceous materials studied

content exhibited the largest part of gasification gaseous products and CH

had the smallest part. For the two petroleum cokes

content was higher than CO

which was similar to Zun-yi char.When the steam/char ratio was constant

the carbon conversion of both Shen-fu and PC chars increased with increasing temperature. When the gasification temperature was constant

the carbon conversions of all char samples increased with increasing steam/char ratio. For all the steam/char ratios

compared to water gas shift reaction

char-H

O and char-CO

reaction were further from the thermodynamic equilibrium due to a much lower char gasification rate than that of water gas shift reaction rate. Therefore

kinetic effects may play a more important role in a char gasificati

on step than thermodynamic effects when the gasification reaction of char was held in DTF. The calculating method for the equilibrium shift in this studywill be aworth reference for analysis of the gaseous components in industrial gasifier. The reactivity of residual cokes decreased and the crystal layer (L

002

) numbers of residual cokes increased with increasing gasification temperature. Therefore

002

the carbon crystallite structure parameter

can be used to evaluate the reactivity of residual cokes.

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