The invention discloses a semi-negative pressure benzene removal device for coal coking, which belongs to the technical field of coal coking benzene removal, including benzene removal tower, product cooler, product trough, benzene water separator, vacuum tank, water seal and final cooling tower. The benzene removal tower is connected with product cooler through benzene steam pipeline, product cooler is connected with benzene water separator through pipeline, benzene water separator and product cooler are respectively connected with pipeline. The channel is connected with the product tank, the benzene-water separator is connected with the vacuum tank through the pipeline, the vacuum unit is set on one side of the vacuum tank, the vacuum tank is connected with the final cooling tower through the pipeline of the non-condensable gas, and the water seal is set on the pipeline of the non-condensable gas. The coal coking semi-negative pressure benzene removal device of the invention enables the top pressure of the benzene removal tower to be stably controlled between 3.5 5.0 kpa, so that the passive benzene removal can be changed into active benzene removal, thereby realizing the reduction of steam consumption, the improvement of system stability, the reduction of system associated wastewater, the improvement of benzene removal efficiency and the improvement of field operation environment.
【技术实现步骤摘要】
煤焦化半负压脱苯装置
本专利技术涉及煤焦化脱苯
,具体地说,本专利技术涉及一种煤焦化半负压脱苯装置。
技术介绍
煤气脱苯工艺使用过热蒸汽进入脱苯对循环洗油进行蒸馏,脱苯塔顶部压力控制在8~10kpa,苯汽从脱苯塔顶溢出,进行产品冷却器冷却,产品进入产品槽,在长期的生产中发现,原脱苯工艺主要借助蒸汽的温度及压力进行蒸吹,脱苯系统及洗苯系统受蒸汽影响较大,系统稳定性差、蒸汽消耗量大、伴生废水多、脱苯效率低、现场环境差等问题。给安全、平稳的生产带来极大的安全隐患。为解决上述问题,本专利技术的目的在于提供一种半负压脱苯装置,通过半负压脱苯装置,使脱苯塔顶压力稳定的控制在-3.5~-5.0kpa之间,使被动脱苯变为主动脱苯,从而实现降低蒸汽消耗量、提高系统稳定性、减少系统伴生废水量、提高脱苯效率低、改善现场操作环境。
技术实现思路
本专利技术所要解决的技术问题是提供一种煤焦化半负压脱苯装置,该装置可以降低蒸汽消耗量、提高系统稳定性、减少系统伴生废水量、提高脱苯效率低、改善现场操作环境。为了解决上述技术问题,本专利技术所采用的技术方案是:煤焦化半负压脱苯装置,其特征在于:包 ...
【技术保护点】
1.煤焦化半负压脱苯装置,其特征在于:包括脱苯塔、产品冷却器、产品槽、苯水分离罐、真空罐、水封和终冷塔,所述脱苯塔通过苯汽管线与产品冷却器连接,产品冷却器通过不凝气体管线二与苯水分离罐连接,苯水分离罐和产品冷却器分别通过管道与产品槽连接,所述苯水分离罐通过管道与真空罐连接,真空罐的一侧边设置抽真空机组,所述真空罐通过不凝气体管线一与终冷塔连接,所述不凝气体管线上设置水封。
【技术特征摘要】
1.煤焦化半负压脱苯装置,其特征在于:包括脱苯塔、产品冷却器、产品槽、苯水分离罐、真空罐、水封和终冷塔,所述脱苯塔通过苯汽管线与产品冷却器连接,产品冷却器通过不凝气体管线二与苯水分离罐连接,苯水分离罐和产品冷却器分别通过管道与产品槽连接,所述苯水分离罐通...
【专利技术属性】
技术研发人员:范孝豆,姚良雨,车峰,李枫,余海涛,
申请(专利权)人:临涣焦化股份有限公司,
类型:发明
国别省市:安徽,34
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