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为了合理设计和优化操作TEG脱水装置,减少BTEX的排放,对TEG脱水装置工艺过程进行模拟计算,分析了原料气压力、温度、流量,TEG循环量,闪蒸压力、温度,汽提气量,再沸器温度,吸收塔塔板数及塔板效率对露点降和BTEX排放的影响。可以得出,TEG循环量是影响BTEX排放的一个重要因素。BTEX的排放量随着进气温度、闪蒸温度的增大而减小;BTEX的排放量随着原料气压力、原料气流量、闪蒸压力、甘醇循环量、再沸温度、汽提气量的增加而增大。露点降随着进气温度、原料气流量的增加而下降;露点降随着进气压力、TEG循环量、再沸温度、汽提气量的增加而增大。
In order to reasonably design and optimize the operation of TEG dewatering unit and reduce the emission of BTEX, the process of TEG dewatering unit was simulated and analyzed. The pressure, temperature, flow rate, TEG circulation, flash pressure, temperature, Effect of boiler temperature, number of absorber plates, and plate efficiency on dew point and BTEX emissions. It can be concluded that TEG circulation is an important factor affecting BTEX emissions. The emissions of BTEX decrease with the increase of inlet temperature and flashing temperature. The emissions of BTEX vary with the feed gas pressure, feed gas flow, flash pressure, glycol recycle, reboil temperature, Increase and increase. The dew point decreases with the increase of inlet air temperature and feed gas flow rate. The dew point decreases with the increase of inlet pressure, TEG circulation, reboiling temperature and stripping gas.