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全流程智能控制优化在催化裂化中的应用效果
Application Effect of Full-Process Intelligent Control Optimization in Catalytic Cracking
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- DOI:
- 作者:
- 金世成，柴树锋，崔玉海，李玉博，陈 祥，胡孝虎
Jin Shicheng, Chai Sshufeng, Cui Yuhai, Li Yubo, Chen Xiang, Hu Xiaohu
- 作者单位:
- 盘锦北方沥青燃料有限公司
Panjin North Asphalt Fuel Co., Ltd.
- 关键词:
- 催化裂化；全流程智能控制；控制优化；节能降耗；提高收率
catalytic cracking; full-process intelligent control; control optimization; energy saving and consumption reduction; yield improvement
- 摘要:
- 催化裂化作为石油炼制行业的关键工艺，对提升原油加工深度、生产高附加值产品具有重要的地位。由于现代计算机技术的快速发展，以往的控制形式已无法满足装置需求。文中基于某石化公司 120×104 t/a 催化裂化装置，介绍了全流程智能控制优化技术的应用实践。通过构建多模型智能控制系统，对反应—再生岗位、分馏岗位、吸收稳定岗位等关键岗位实施智能控制优化，实现了平稳反应深度、改善产品分布、降低装置能耗和装置运行平稳性提升,减少员工操作频次。实践表明，经过智能控制系统优化后，催化裂化汽油收率提高1.12%，柴油收率降低 1.01%，油浆收率降低 0.15%，按现有价格计算，可增加利润 90.75×104 元/a；解吸塔蒸汽单耗从0.091 kgoe/t降至0.079 kgoe/t，节约蒸汽成本约294.77×104 元/a；汽包液位和分馏回流罐液位稳定性显著提升，装置操作稳定性大幅改善，减少了人工干预频次和非计划停工风险。As a key process in petroleum refining, catalytic cracking plays an important role in enhancing crude oil processingdepth and producing high value-added products. With the rapid development of modern computer technology, traditional controlmethods can no longer meet the requirements of the unit. Based on a 1.2 Mt/a catalytic cracking unit in a petrochemical company,this paper introduces the application practice of full-process intelligent control optimization technology. By constructing a multimodel intelligent control system, intelligent control optimization was implemented for key positions including the reaction-regenera⁃tion section, fractionation section, and absorption-stabilization section. This achieved stable reaction severity, improved product dis⁃tribution, reduced unit energy consumption, enhanced unit operation stability, and decreased operator intervention frequency. Practi⁃cal results show that after intelligent control system optimization, the catalytic cracking gasoline yield increased by 1.12 percentagepoints, diesel yield decreased by 1.01 percentage points, and slurry oil yield decreased by 0.15 percentage points. Calculated at cur⁃rent prices, this generates an annual profit increase of 907,500 yuan. The steam consumption per unit of the depropanizer column de⁃creased from 0.091 to 0.079, saving approximately 2,947,700 yuan in steam costs annually. The stability of steam drum level andfractionator reflux drum level was significantly improved, unit operation stability was greatly enhanced, and the frequency of manualintervention and risk of unplanned shutdowns were reduced.