燃烧前二氧化碳捕获：双级 Selexol 工艺和联合 Sulfinol-Selexol 工艺的热经济比较,International Journal of Energy Research

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燃烧前二氧化碳捕获：双级 Selexol 工艺和联合 Sulfinol-Selexol 工艺的热经济比较
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2022-09-16 , DOI: 10.1002/er.8674
Neelam Ramzan ₁ , Muhammad Rizwan ₂ , Muhammad Zaman ₁ , Muhammad Adnan ₁ , Atta Ullah ₁ , Afsin Gungor ₃ , Usama Shakeel ₁ , Azhar ul Haq ₁

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化石燃料发电厂的温室气体排放是发电行业的主要关注点。二氧化碳 (CO ₂ ) 排放构成温室气体的主要部分。_{在减少 CO 2}的几个可用机会中，碳捕获和封存 (CCS) 被认为是 CO ₂减缓的可能选择。然而，CCS 的实施显着增加了发电成本。本研究的主要工作是探索双阶段 Selexol 工艺的技术和经济方面，以及一个名为联合 Sulfinol-Selexol 工艺的拟议工艺，用于燃烧前捕获。结合的 CO ₂捕获工艺利用 Sulfinol-M 溶剂型工艺选择性捕获聚乙二醇溶剂型 Selexol 工艺中的硫化氢和二甲醚，用于 CO ₂捕获。通过在 Aspen HYSYS V.11 中进行模拟，从能源消耗、运营成本和资本成本方面对这两个过程的性能进行了评估和比较。对贫溶剂入口温度、多闪蒸系统压力和吸收塔级数进行敏感性分析，以改进这两个过程。拟议的联合工艺比基线双阶段 Selexol 工艺经济 5.8%，并且其整体工艺更简单。然而，经过敏感性分析，两种工艺都有所改进，发现双阶段 Selexol 工艺比 Sulfinol-Selexol 联合工艺经济性高 3.31%。

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Pre-combustion carbon dioxide capture: A thermo-economic comparison for dual-stage Selexol process and combined Sulfinol-Selexol process

The emission of greenhouse gases from fossil-fueled power plants is a major concern in power generation sector. Carbon dioxide (CO₂) emissions constitute the major portion of the greenhouse gases. Among several opportunities available to reduce CO₂, carbon capture and sequestration (CCS) is considered to be a possible option for CO₂ mitigation. However, implementation of CCS increases the cost of power generation significantly. The main effort of this study is to explore the technical and economic aspects of a dual-stage Selexol process and a proposed process named combined Sulfinol-Selexol process, for pre-combustion capture. The combined CO₂ capture process utilizes Sulfinol-M solvent-based process for the selective capture of hydrogen sulfide and dimethyl ether of polyethylene glycol solvent-based Selexol process for CO₂ capture. The performance of both processes is assessed and compared in terms of energy consumptions, operating cost, and capital cost by simulating in Aspen HYSYS V.11. Sensitivity analysis for lean solvent inlet temperature, pressures of multi-flash system and number of stages of the absorption columns is performed to improve both processes. The proposed combined process is 5.8% more economical than the baseline dual-stage Selexol process as well as its overall process is simpler. However, after sensitivity analysis, both processes improved, and the dual-stage Selexol process is found to be 3.31% more economical than the combined Sulfinol-Selexol process.

更新日期：2022-09-16

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