Carbon-ash separation of coal gasification slag in swirling water based on apparent density

被引：0

作者：

Li H. ^{[1
]}

Dong L. ^{[1
]}

Bao W. ^{[2
]}

Wang J. ^{[2
]}

Fan P. ^{[2
]}

Fan M. ^{[1
]}

机构：

[1] College of Mining Engineering, Taiyuan University of Technology, Taiyuan

[2] Key Laboratory of Coal Science and Technology & Ministry of Education and Shanxi Province, Taiyuan

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 03期

关键词：

Apparent density; Carbon-ash separation; Coal gasification slag; Water-only cyclone;

D O I：

10.16085/j.issn.1000-6613.2020-0912

中图分类号：

学科分类号：

摘要：

The gasification of coal produced a large number of slags, which results in serious environmental problems. Hence, the comprehensive utilization of gasification slag is urgent. In this paper, the characteristics of different density components in the coal gasification slag were analyzed systematically, which indicates that the separation of carbon and ash was the premise and foundation for the utilization of coal gasification slag. A method of carbon-ash separation based on the apparent density difference is proposed. Water-only cyclone was used as separation equipment and single-factor tests were carried out to determine the main process parameters on the separation effect of carbon and ash. It proved the feasibility of the water-only cyclone for > 0.074mm carbon-ash separation. By means of Box-Behnken Design, the quantitative relationship between the cone angle of the water-only cyclone, the apex diameter, the vortex finder depth and the ash content, the yield, the comprehensive efficiency of separation is analyzed, which provides data support for the prediction of carbon-ash separation effect and the selection of cyclone structure parameters. The results provide guidance for the utilization of coal gasification slag. © 2021, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：1344 / 1353

页数：9

共 23 条

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