原油油气的吸收回收工艺模拟与优化20211203 9点

　　

摘要：地下水封石洞油库在战略性储备原油方面有很多优点，洞罐与拱顶储罐类似，在收存原油时会产生大量油气，油气若不进行回收处理，会对周边环境等产生不良影响。油气回收方法中的吸收法为较常见的方法，现今环境保护要求日益提高，对洞库在收存原油时产生大量的油气进行回收是十分有必要的。通过流程模拟计算软件Aspen Plus对吸收工艺流程进行模拟，经过对比数据结果，处理油气量为1000m³/h，在相同吸收压力下，确定了吸收剂最佳用量取100 m³/h。综合经济性，吸收剂用量与吸收压力分别选择100 m³/h、0.2 MPa较为合理。处理量为1000 m³/h时，吸收剂达到50m³/h后，回收率与出口浓度变化趋于稳定。吸收剂温度低于5℃后，吸收率增长趋于平稳，因此确定吸收温度为5℃。关键词：地下水封石洞油库；原油油气回收；吸收法；Aspen Plus

Abstract: underground water-sealed caverns have many advantages in terms of strategic crude oil reserves. Caverns tanks are similar to vaulted storage tanks. Large amounts of oil vapor are generated when crude oil is collected. If oil vapor are not recovered and processed, it will have adverse effects on the surrounding environment. The absorption method in the oil vapor recovery method is a relatively common method. Nowadays, the requirements for environmental protection are increasing. It is very necessary to recover the large amount of oil vapor produced in the caverns when the crude oil is collected. The absorption process is simulated by the process simulation calculation software Aspen Plus. After comparing the data results, the amount of oil vapor processed is 1000m³/h. Under the same absorption pressure, the optimal amount of absorbent is determined to be 100 m³/h. Comprehensive economy, it is reasonable to choose 100 m³/h and 0.2 MPa for the amount of absorbent and the absorption pressure respectively. When the amount of oil vapor processed is 1000 m³/h, when the absorbent reaches 50m³/h, the recovery rate and outlet concentration change tend to be stable. After the temperature of the absorbent is lower than 5°C, the increase in the absorption rate tends to be stable, so the absorption temperature is determined to be 5°C.

Key words: underground water-sealed caverns; crude oil vapor recovery; absorption method; Aspen Plus

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