| 摘要: |
| 目的 针对长周期运行的油气处理厂存在产量逐渐衰减的问题，在进行节能改造时，分析产量衰减对全厂能量系统的影响，以确保节能优化措施长期有效。方法 基于多个工况的模拟结果，采用夹点分析与?分析方法进行全厂的能量系统分析与节能优化。结果 根据夹点分析指出了全厂主要不合理用能点，通过?分析获得了各装置?损失分布，基于上述分析结果，提出了4种节能优化方案。结论 换热网络方案、蒸汽系统改造方案、液力透平方案的节能量均随厂站原料流量的下降而存在不同程度的降低，换热网络与吸收式热泵精馏耦合方案的节能量则可在原料流量下降的情况下保持稳定。 |
| 关键词: 油气处理厂 产量衰减 夹点分析 㶲分析 节能优化 |
| DOI：10.3969/j.issn.1007-3426.2025.02.020 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目“耦合物质流与能量流的厂区布局优化方法研究”（22022816） |
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| Analysis and optimization of the energy system of an oil and gas processing plant under the yield-decline operating condition |
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Yongcang REN1, Qianxing DENG2, Haigang ZENG3, Lingwei ZHANG4, Xinyue MIAO1, Xinyong GUO1, Yufei WANG4
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1.R&D Center for Ultra-Deep Complex Reservior Exploration and Development, CNPC, Korla, Xinjiang, China;2.Engineering Research Center for Ultra-Deep Complex Reservoir Exploration and Development, Xinjiang Uygur Autonomous Region, Korla, Xinjiang, China;3.Xinjiang Key Laboratory of Ultra-Deep Oil and Gas, Korla, Xinjiang, China;4.College of Chemical Engineering and Environment, China University of Petroleum, Beijing, China
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| Abstract: |
| Objective In view of the gradual decrease of the yield in a long-period oil and gas processing plant, the impact of the declining yield on the total-site energy system should be analyzed during the energy-saving retrofit to ensure the long-term effectiveness of the schemes. Method In this study, several operating conditions of the plant had been simulated, pinch analysis method and exergy analysis method were adopted for the optimization of the total-site energy system. Result The major heat loaded across the pinch of the whole plant were indicated by pinch analysis, and the exergy loss distribution of units was obtained by the exergy analysis method. Four energy saving optimization schemes were proposed based on the above analysis results. Conclusion With the decline of the flow rate of raw materials, the energy savings of the heat exchange network scheme, the steam system retrofit scheme, and the hydro turbine scheme decrease to different degrees, while the energy saving of the coupling scheme of heat exchange network and absorption heat pump rectification can remain stable. |
| Key words: oil and gas processing plant yield decline pinch analysis exergy analysis energy saving optimization |
