摘要
为使原油稳定经济效益最大化,建立了经济模型,以某处理站原油全烃色谱分析实验数据及现场实际运行工况为基础,利用HYSYS流程模拟软件对常规负压稳定工艺进行模拟,分析了稳定塔操作压力及温度对原油稳定、轻烃回收量的影响,并将模拟结果导入经济模型,得出结论,即以降低稳定塔操作压力和提升稳定塔操作温度来提高原油稳定深度与轻烃回收量,从实际情况与经济的角度来说都是不可取的。在常规负压稳定工艺的基础上,引入气提技术,利用HYSYS软件对其模拟,并将模拟结果导入经济模型,结果表明气提负压稳定工艺无论从稳定深度、分离效果、轻烃回收量、经济效益都优于常规负压闪蒸稳定工艺;同时研究了气提气量及不同气提组分对稳定工艺的影响,结果表明,气提气组分越贫,气提效果越明显,影响气提效果的主要是气提气中的C_1～C_5的含量,气提气中N_2和CO_2的含量对气提效果几乎没有任何影响。
In order to maximize the economic benefit of crude oil stability,an economic model is established. Based on the experimental data of total hydrocarbon chromatographic analysis and actual operating conditions of the crude oil at a certain station, the conventional negative pressure stabilization process is simulated with the HYSYS process simulation software, the influence of the operating pressure and temperature of the stabilization tower on the stability of crude oil and the recovery of light hydrocarbon is analyzed,and the simulation result is imported into the model. It is concluded that it is not advisable to improve the stable depth of crude oil and the recovery of light hydrocarbons by reducing or raising the operating pressure of the stabilization tower from the actual situation and the economic point of view. On the basis of the conventional negative pressure stabilization process,the gas stripping technology is introduced and simulated by HYSYS software, and the simulation results are introduced into the economic model. The results show that the gas stripping negative pressure stabilization process is superior to the conventional negative pressure flash stabilization process,regardless of the stability,separation effect, light hydrocarbon recovery and economic benefits. At the same time, the effect of gas stripping amount and gas stripping components on the stability process is studied. The results show that the more poor the gas stripping components,the more obvious the gas stripping effect. The content of C_1-C_5 in the gas stripping gas mainly affect the gas stripping effect, and the content of N_2 and CO_2 in the gas stripping gas has little effect on the performance of gas stripping.
引文
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