Abstract： To realize the steady dense phase conveying of GSP gasification technology in industrial application, the factors affecting pulverized coal steady conveying were studied such as the volume of lock hopper and feeding tank valve of lock hopper, mixer, pipe line of pulverized coal, loose-components and so on. The results show that the gas flow rate in lock hopper is 900 to 1 200 m³/h under the standard condition. A bypass is added in the loose gas pipe. Purge gas is set in the discharge valve. The feeding tank is provided with a continuous material level meter. The pulverized coal pipeline in the middle is fixed. The thickness of the plate transmission element is increased by 2 to 3 mm. The metal mesh voidage is regulated at 260 μm. Thus the changing range of pulverized coal mass flow in the pulverized coal dense phase conveying system is less than 5%.

Keywords: gasification of coal; pulverized coal； pneumatic conveying

中图分类号：TQ536       文献标志码：A

文章编号：1008-5548(2015)03-0096-04

DOI:10.13732/j.issn.1008-5548.2015.03.023

收稿日期：2014-06-11， 修回日期：2014-06-27，在线出版时间：2015-06-24。

基金项目：宁夏回族自治区重大科技攻关项目。

第一作者简介：马银剑（1979—），男，硕士，工程师，研究方向为煤气化。 电话：0951-6963723，E-mail ：18995052120@126.com。