降低汽柴油加氢精制装置低压分离器氢气排放的措施

摘要

The new measures for reducing hydrogen in LP separator release gas have been found through optimization study of process operation parameters ( such as temperature, pressure, product oil flowrate, liquid level and recycle hydrogen gas release, etc) of HP separator of gasoline and diesel hydrotreating unit. When the operating pressure of HP separator is reduced to 5. 0-5. 1 MPa from 6. 0-6. 1 MPa and the operating temperature of HP separator is controlled at lower than 45 ℃ to reduce the solubility of hydrogen in HP separator oil, the reduction of released hydrogen of the hydrotreating unit is as high as 154. 56 m3/h. The annual direct economic benefits of this measure is about 20 million Yuan RMB with the deduction of newly added fuel gas requirement of 15 -20 m3/h.%通过对汽柴油加氢精制装置高压分离器的工艺操作参数(如温度、压力、油品流量、液位和循环氢气体排放量)的优化分析,找到了降低装置低压分离器排放气中的氢气含量的新方法.将高压分离器的操作压力由6.0～6.1MPa降低至5.0～5.1 MPa,严格控制高分操作温度在45℃以下,减少氢气在高分油里的溶解度,可使加氢装置减少氢气排放量154.56 m3/h,除去新增燃料气量15～20 m3/h,采取此项措施可产生直接经济效益近20×106 RMB￥.