Effect of heat treatment on structure and gasification reactivity of petroleum coke

Chao Li,Fuchen Wang,Xin Liu,Ji Yang,Zhijie Zhou,Zhenghua Dai

doi:10.1007/s40789-016-0109-2

Chao Li, Fuchen Wang + Show 4 more

Open Access

https://doi.org/10.1007/s40789-016-0109-2

Copy DOI

Abstract

Petroleum coke was thermally treated on a fixed bed reactor in a temperature range of 1173–1673 K. The changes of the elemental composition and crystalline structure of petroleum coke, with heat treatments as well as the gasification reactivity of the heat-treated petroleum cokes were investigated. The results showed that the petroleum coke was carbonized and graphitized to a higher degree with increasing heating temperature, while the gasification reactivity decreased. The treatment at temperatures of 1173 and 1473 K significantly enlarged the specific surface area and the pore volume of petroleum coke. Both the specific surface area and the pore volume decreased at 1673 K. An empirical normal distribution function model (NDFM) was found to fit the gasification rates of petroleum coke well. The correlation coefficient of petroleum coke by normal distribution function model at different heat treatment temperatures is between 0.93 and 0.95.

Highlights

IntroductionPetroleum coke is a carbonaceous solid material produced by thermal processing of crude oil
Petroleum coke was thermally treated on a fixed bed reactor in a temperature range of 1173–1673 K
The results showed that the petroleum coke was carbonized and graphitized to a higher degree with increasing heating temperature, while the gasification reactivity decreased

Summary

Introduction

Petroleum coke is a carbonaceous solid material produced by thermal processing of crude oil. With a continuous increase of the worldwide supply of heavy crude oil and the installation of more petroleum deep conversion processes, the output of petroleum coke is steadily increasing (Ding 2004; Zhang and Gong 2004; Zhan et al 2010). It has arisen as an urgent issue to dispose petroleum cokes on a large scale, especially for those with high sulfur content. It is an effective way to utilize petroleum coke to produce syngas by gasification technology. It is necessary to study the changes in the properties of coke on heat treatments

Objectives

Methods

Results