燃料与化工 ›› 2010, Vol. 41 ›› Issue (5): 48-50.

• 煤气净化与化学产品加工 • 上一篇    下一篇

稳定焦化二甲苯产品质量的措施

陈明秀,李辉武   

  1. 攀钢集团攀枝花钢钒有限公司煤化工厂,攀枝花 617022
  • 出版日期:2010-09-23

The measure on stabilization of product quality of coking xylene

Chen Mingxiu,Li Huiwu   

  1. The Coal and Chemical Plant of Panzhihua Iron & Steel Company, Panzhihua 617022, China
  • Online:2010-09-23

摘要:

通过对焦化二甲苯组成的分析,找出了乙基苯和苯乙烯是二甲苯变色的主要有害杂质。试验结果表明:加酸量应控制在4.5%~5.0%,最佳洗涤温度为45~50℃,酸洗时间宜控制在7min以上。还可采用在产品中加入抗氧化剂、进行二次处理和水洗等措施稳定二甲苯产品质量。

Abstract:

Through the analysis on the composition of coking xylene, it is found that ethyl benzene and styrene is the main harmful impurity of xylene discoloration. The test result showed: the amount of acid addition should be controlled is 4.5%~5.0%,  the optimum washing temperature is 45~50℃,  and acid washing time is controlled at 7 minutes or longer. The measures of adding anti-oxidant into product, conducting secondary treatment and water washing can be taken for stabilization of product quality of xylene.

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