Causes and countermeasures of refractory foaming in amine solution desulphurization system
In order to solve the problem of refrac-tory foaming in the amine solution desulphurization system of Ningbo Daxie Petrochemical Co Ltd,CNOOC,the causes of foaming were analyzed and the corresponding countermeasures were put forward.The results showed that the accumulation of macro-molecular hydrocarbons and complex polymer com-ponents in the amine solution was the main reason for the formation of rigid foaming system.Diesel compo-nents carried by catalytic cracking(DCC)dry gas and gas tank gas were the main sources of macro-molecular hydrocarbons,and 1,3-butadiene in LPG from upstream DCC units was the main source of polymers.1 he vacuum distillation process developed by Hebei Fine Technology Co Ltd was used to achieve online purification of amine solution.After purification,the foaming height of amine solution was not higher than 4 cm,the defoaming time was not longer than 5 s,the oil mass concentration was not more than 100 mg/L.The amine solution was clear and transparent,and the sulfur content of methyl tert-butyl ether was reduced to less than 45 μg/g.
万方数据
维普
