Influence of pressure on turbulent CFB coal gasification

被引：0

作者：

Duan F. ^{[1
,2
]}

Jin B. ^{[1
]}

Huang Y. ^{[1
]}

Li B. ^{[1
]}

Sun Y. ^{[1
]}

Zhang M. ^{[1
]}

机构：

[1] Thermoenergy Engineering Research Institute, Southeast University

[2] School of Metallurgy and Resource, Anhui University of Technology

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2010年 / 40卷 / 02期

关键词：

Circulating fluidized bed; Coal gasification; Pressurized; Turbulent;

D O I：

10.3969/j.issn.1001-0505.2010.02.035

中图分类号：

学科分类号：

摘要：

Using high temperature preheated air and steam as gasifying agent, coal gasification experiments are performed in a pressurized turbulent circulating fluidized bed (CFB) gasification pilot plant in order to investigate the pressurized gasification process and estimate its potential. The test facility as well as its operation behavior is described. Furthermore, the parameter pressure is investigated regarding to its influence on the producer gas composition. The study results show that the gasification quality is improved at elevated pressure because of the better fluidization in the reactor. Coal gasification at a higher pressure shows advantages in lower heat value and carbon conversion. The gas heating value is increased by 15% when the gasifier pressure increases from 0.1 MPa to 0.3 MPa. Increasing the gasifier pressure would increase the carbon conversion from 57.52% to 76.76%. The dry gas yield and the efficiency of cold gas increase a little with the increase of the gasifier pressure. There exists an optimal gasifier pressure for a certain CFB coal gasification process. For the test condition, a pressure of 0.3 to 0.4 MPa produces optimal gasification effect.

引用

页码：397 / 401

页数：4

共 14 条

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