复合胺法脱硫首次在煤化工尾气处理上的运行总结

Summary of the first operation of compound amine desulfurization in coal chemical tail gas treatment

河南晋控天庆煤化工有限责任公司年产300 kt/a合成氨、520 kt/a尿素、副产5×10^(8)m^(3)/a工业燃气(LNG)项目,气体净化采用低温甲醇洗工艺,低温甲醇洗工段在实际运行过程中产生的酸性气送往硫回收工段进行处理。随着国家环保管控力度的不断加大,为保证硫回收尾气能达标排放,天庆公司加大环保投资力度,投资了一套先进的复合胺法脱硫装置,采用四川益能康生公司的专利吸收剂,实现了超低排放,在试车及生产过程中出现了一些影响装置稳定运行的问题。通过采取一些科学有效的改进优化措施,稳定了生产工艺,提高了经济效益,守好了环保底线,促进了企业的稳定生产。

Henan Jinkong Tianqing Coal Chemical Co., Ltd. has an annual output of 300 kt/a synthetic ammonia, 520 kt/a urea and by-products 5 ×10^(8) m^(3)/a industrial gas(LNG) project. The low-temperature methanol washing process is adopted for gas purification. The acid gas generated in the actual operation of the low-temperature methanol washing section is sent to the sulfur recovery section for treatment. With the continuous increase of national environmental protection control, in order to ensure that the sulfur recovery tail gas can meet the emission standard, Tianqing company has increased environmental protection investment, who invested in a set of advanced compound amine desulfurization unit, and adopted the patented absorbent of Sichuan Yineng Kangsheng Company to achieve ultra-low emission. Some problems affecting the stable operation of the unit have occurred in the process of commissioning and production. By taking some scientific and effective improvement and optimization measures, the production process has been stabilized, the economic benefits have been improved, the bottom line of environmental protection has been kept, and the stable production of the enterprise has been promoted.