Study On Technology Of Absorption Method In The Gasoline Vapor Recovery On Crude Oil Wharf

With the stimulation of low oil prices home and abroad,the imports of crude oil in 2016 have hit the biggest increase since 2010 in China.In face of the increasing large amount of crude oil imports,it also can not ignore a question,which is a large number of oil evaporation loss in the process of oil transportation.When receiving and transmitting crude oil on the duck,a large part of oil and gas will inevitably escape into the air.These gasoline vapor will not only threaten the physical and mental health of employees,causing economic losses to enterprises,but also seriously pollute the environment.Therefore,it is of great practical significance to carry out gasoline vapor recovery on crude oil on the duck to ensure the energy-saving and efficient development of oil storage and transportation industry.In this paper,we do a research on gasoline vapor recovery on the dock,which is based on Sinachem Xingzhong oil transport(Zhoushan)Co.Ltd.Through the experiment and software simulation,the following conclusions and achievements are obtained:(1)Building the experimental platform of gasoline vapor recovery for the absorption method.In this paper,the experimental study is from the following three aspects,namely:different types of absorbent,different oil and gas absorption temperature and different amount of liquid spray.The experimental results show that,firstly,when the silicone oil is used as the absorbent,the recovery efficiency is relatively high,and the recovery efficiency is E=91.67%.Secondly,the recovery efficiency increase in a certain range with the temperature rising and the absorption efficiency is the maximum when the absorption temperature at about 15 centigrade.When the absorption temperature above 30 centigrade,the recovery efficiency decreases dramatically.In addition,the absorption amount of absorbing liquid has also a great influence on the absorption effect.In addition,the greater the amount of spray in a certain range,the better the absorption effect,especially in the range of 2-6L/h,the change of recovery efficiency is more obvious.(2)In this paper,the response surface optimization method is used to optimize the experimental data in the experiment by means of the Box-Behnken central composite experimental design principle.The experiments are designed 17 sets of independent experiments,selecting three variables as the factors of response surface test.The low and high levels of each variable are encoded with +1,0,land the efficiency of gasoline vapor is used as the response value(Y).After regression fitting,When X1=15;X2=10;X3=1,that is,when the gasoline vapor absorption temperature is 15 DEG C;the absorption liquid spray amount is 10L/h,and the silicone oil is used as the absorbent,the gasoline vapor recovery efficiency obtains the theoretical maximum value.Finally,according to the response surface and contour map,the conclusions are obtained:the factors that affect the efficiency of oil and gas recovery are as follows:factor A(the type of absorbent)>B factor(the amount of liquid spray)>C factor(crude oil and gas temperature).(2)In order to verify the accuracy of the experimental results,the gasoline vapor evaporation process is simulated by using the chemical process simulation software Aspen Plus.By setting the parameters,the calculation results show that the efficiency of oil and gas treatment is E=(1-0.0835)*100%=91.65%,and the data are also basically consistent with the experimental results.