屯留下组煤添加助熔剂降低灰熔融性温度的试验研究  

Experimental Study on Reducing Ash Fusibility Temperature by Adding Flux to Tunliu Lower Series Coal

作　　者：薛慧峰 姚田 Xue Huifeng;Yao Tian(Shanxi Engineering Vocational College,Taiyuan Shanxi 030009;Shanxi Sunshine Coking Group Co.,Ltd.,Hejin Shanxi 043300)

机构地区：[1]山西工程职业学院,山西太原030009 [2]山西阳光焦化集团股份有限公司,山西河津043300

出　　处：《山西化工》2022年第2期99-101,共3页Shanxi Chemical Industry

摘　　要：煤气化技术是洁净高效利用煤炭的重要技术之一。近年来,流化床气化技术得到了快速发展和广泛应用。流化床气化技术具有气化温度低、强度高、煤种适应性广、炉内传热传质好,均匀温度分布等优点,现代煤气化发展的方向为固态排渣向液态排渣方向发展,研究屯留下组煤的煤灰组成和煤灰熔融性特征,探讨通过添加助熔剂降低灰熔融性温度的可能性,为选择具体的液态排渣气流床气化工艺,即GSP、壳牌还是水煤浆德士古工艺,提供基础数据。试验数据表明,屯留下组煤通过添加氧化钙(CaO)的方法,可有效地降低煤灰熔融性温度。Coal gasification technology is one of the important technologies for clean and efficient utilization of coal.In recent years,fluidized bed gasification technology has been rapidly developed and widely used.Fluidized bed gasification technology has the advantages of low gasification temperature,high intensity,wide adaptability of coal types,good heat and mass transfer in the furnace and uniform temperature distribution.The development direction of modern coal gasification is from solid slag discharge to liquid slag discharge.The coal ash composition and coal ash fusibility characteristics of Tunliu lower series coal are studied,and the possibility of reducing the ash fusibility temperature by adding flux is discussed,providing basic data for selecting specific liquid slag removal entrained flow gasification process,i.e.GSP,shell or coal water slurry Texaco process.The test data show that the fusibility temperature of coal ash can be effectively reduced by adding calcium oxide(CaO).

关 键 词：液态排渣 煤灰熔融性 助熔剂 灰组分 石灰石 

分 类 号：TQ546[化学工程—煤化学工程]