Shell煤氣化裝置煤粉輸送系統壓降特性研究

第42卷第2期化學(xué)工程Vol. 42 No. 22014年2月CHEMICAL ENGINEERING( CHINA)Feb.2014Shell煤氣化裝置煤粉輸送系統壓降特性研究趙錦波'，陸海峰',盛新’，張煒(1.中國石油化工股份有限公司，北京10020; 2.華東理工大學(xué)上海市煤氣化技術(shù)工程研究中心，上海200237;3.中國石油化工股份有限公司安慶分公司，安徽安慶246000; 4. 中石化寧波技術(shù)研究院，浙江寧波315103 )摘要:在中石化安慶Shell粉煤氣化裝置的煤粉輸送系統中,通過(guò)新增設壓力與壓差傳感器,對2#煤線(xiàn)系統的壓降特性進(jìn)行了測試研究。在裝置運行不同階段，分別獲得了煤粉循環(huán)輸送系統與煤粉人爐輸送系統的壓力分布曲線(xiàn),給出了各系統主要阻力部件煤燒嘴、煤粉流量調節閥和減壓器的壓降數據及其壓降分率。研究表明:在煤粉循環(huán)輸送系統中,減壓器所占的壓降分率最大,具有良好的提壓作用;煤粉入爐輸送系統的最大壓降在煤粉流量調節閥上。針對煤粉流量較低負荷運行情況下,提出了合理設置煤粉輸送壓差與煤粉流量調節閥開(kāi)度的優(yōu)化、節能操作方法。文章還對所獲測量參數進(jìn)行了綜合整理,給出包括煤粉速度、煤粉質(zhì)量濃度、煤粉流量以及管線(xiàn)壓降的多參數操作曲線(xiàn)。關(guān)鍵詞粉煤氣化;壓降;氣力輸送中圖分類(lèi)號:TQ 022.3文獻標識碼:A文章編號: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煤粉高壓密相氣力輸送是氣流床粉煤氣化的關(guān)與壁面的作用有關(guān),還與管道上設置的閥門(mén)等局部鍵技術(shù)之-[。影響輸送系統壓降特性的因素十阻力部件特性有關(guān)(2] ,所以該類(lèi)系統的壓降特性大分復雜,除了與流體性質(zhì)流體間、顆粒間以及顆粒多通過(guò)實(shí)驗測試來(lái)獲得。中國煤化工收稿日期:201304-10基金項目:中石化科技開(kāi)發(fā)資助項目“粉煤密相輸送特性研究與工業(yè)應用"( B400-3-120.MHCNMH G作者簡(jiǎn)介:趙錦波( 1976-) ,男,碩士研究生,高級工程師,研究方向為煤化工,電話(huà):(010)0498348 ,-mal:zhaojinDo@ sinopee. com。