Shell煤气化装置煤粉输送系统压降特性研究

第42卷第2期化学工程Vol. 42 No. 22014年2月CHEMICAL ENGINEERING( CHINA)Feb.2014Shell煤气化装置煤粉输送系统压降特性研究赵锦波'，陆海峰',盛新’，张炜(1.中国石油化工股份有限公司，北京10020; 2.华东理工大学上海市煤气化技术工程研究中心，上海200237;3.中国石油化工股份有限公司安庆分公司，安徽安庆246000; 4. 中石化宁波技术研究院，浙江宁波315103 )摘要:在中石化安庆Shell粉煤气化装置的煤粉输送系统中,通过新增设压力与压差传感器,对2#煤线系统的压降特性进行了测试研究。在装置运行不同阶段，分别获得了煤粉循环输送系统与煤粉人炉输送系统的压力分布曲线,给出了各系统主要阻力部件煤烧嘴、煤粉流量调节阀和减压器的压降数据及其压降分率。研究表明:在煤粉循环输送系统中,减压器所占的压降分率最大,具有良好的提压作用;煤粉入炉输送系统的最大压降在煤粉流量调节阀上。针对煤粉流量较低负荷运行情况下,提出了合理设置煤粉输送压差与煤粉流量调节阀开度的优化、节能操作方法。文章还对所获测量参数进行了综合整理,给出包括煤粉速度、煤粉质量浓度、煤粉流量以及管线压降的多参数操作曲线。关键词粉煤气化;压降;气力输送中图分类号:TQ 022.3文献标识码:A文章编号:1005-9954(2014)02 0065-04DOI:10. 3969/j. issn. 1005 9954.2014. 02.015Pressure drop characteristics of pneumatic conveyingsystem in Shell coal gasificationZHAO Jin-bo' , LU Hai-feng2 , SHENG Xin' , ZHANG Wei'(1. SINOPEC Corp. , Beijing 100029, China; 2. Shanghai Research Center of Gasification Technology，East China University of Science and Technology，Shanghai 200237, China; 3. SINOPEC AnqingCompany，Anqing 246000, Anhui Province, China; 4. SINOPEC NingboEngineering Company，Ningbo 315103 , Zhejiang Province, China)Abstract :The pressure drop characteristic of No.2 conveying pipeline of pulverized coal was investigated in Shellcoal gasification plant of Sinopec Anqing Co. The pressure distributions across the main resistance devices on theloop conveying pipeline and gasifier feeding pipeline , respectively，were achieved in different operation conditions.The test results indicate that the let-down device, located on the loop conveying pipeline, has the most pressuredrop fraction in the total pressure drop, showing an excellent effect of pressure boosting for the conveying pipeline.And the most pressure drop fraction in the gasifier feeding conveying pipeline lies in the mass flowrate control valveof pulverized coal. Considering the low-load operation of gasifier, an optimization operation method about thesuitable match between the pressure of feed hopper and the opening of the mass flowrate control valve wassuggested. Additionally, the operation curve of conveying system including such parameters as the velocity, mass .concentration and mass flowrate of pulverized coal and the pressure drop of pipeline was presented throughcomprehensive analysis.Key words : pulverized-coal gasification ; pressure drop; pneumatic conveying煤粉高压密相气力输送是气流床粉煤气化的关与壁面的作用有关,还与管道上设置的阀门等局部键技术之-[。影响输送系统压降特性的因素十阻力部件特性有关(2] ,所以该类系统的压降特性大分复杂,除了与流体性质流体间、颗粒间以及颗粒多通过实验测试来获得。中国煤化工收稿日期:201304-10基金项目:中石化科技开发资助项目“粉煤密相输送特性研究与工业应用"( B400-3-120.MHCNMH G作者简介:赵锦波( 1976-) ,男,硕士研究生,高级工程师,研究方向为煤化工,电话:(010)0498348 ,-mal:zhaojinDo@ sinopee. com。