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当前位置: 首页 > 文章 > 乙醇精馏装置的节能降耗工艺优化 山东农业大学学报(自然科学版) 2019,50 (3) 416-419
Position: Home > Articles > Process Optimization of Energy-saving and Cost-reducing in Ethanol Rectification Device Journal of Shandong Agricultural University(Natural Science Edition) 2019,50 (3) 416-419

乙醇精馏装置的节能降耗工艺优化

作  者：
饶珍
单  位：
广州工程技术职业学院
关键词：
精馏;节能降耗;工艺优化
摘  要：
精馏传质传热过程复杂,能耗高,预热器、再沸器、冷凝器工艺过程操作控制是精馏过程节能降耗的关键.通过精馏中试实验装置,研究乙醇-水精馏体系在保障安全稳定生产的前提下,优化工艺过程操作,找出节能降耗的技术途径.原料泡点进料有利于系统操作平稳,原料消耗量低.精细化操作预热器、再沸器加热量,装置开工初期尽早建立全回流,前期再沸器加热量大,中后期慢慢减少,预热器刚好相反,使塔内气液相负荷达到平衡,电耗降低2.7%;精准调节塔顶冷凝器冷却水用量,前期冷却水流量可以大一点,中期最大,后期减小,控制塔顶冷凝器冷却水出口温度,水耗降低17%.放空阀操作控制生产平稳,控制塔压.在复杂的流程找准事故源,保障塔生产安全稳定,生产能力总体评价提高6.8%.
译  名：
Process Optimization of Energy-saving and Cost-reducing in Ethanol Rectification Device
作  者：
RAO Zhen;Guangzhou Institute of Technology;
关键词：
Rectification;;energy-saving and cost-reducing;;process optimization
摘  要：
Through the pilot-scale distillation experiment device, the ethanol-water distillation system was studied on the premise of ensuring safe and stable production, optimizing the process operation, and finding out the technical ways of energy saving and consumption reduction. Bubble point feeding of raw materials is conducive to stable operation of the system and low consumption of raw materials. Fine operation of preheater and reboiler heating capacity, early start-up of the plant to establish full reflux, early reboiler heating capacity is large, slowly reduced in the middle and late stages, the preheater is just the opposite, so that the gas-liquid load in the tower to achieve balance, power consumption reduced by 2.7%;precise adjustment of the top condenser cooling water consumption, the cooling water flow can be a little larger in the early stage, the maximum in the middle stage, the later stage, control tower. The cooling water outlet temperature of top condenser reduces water consumption by 17%. Vent valve operation control production stable, control tower pressure. In the complex process, the accident source can be identified, the safety and stability of tower production can be guaranteed, and the overall evaluation of production capacity can be increased by 6.8%.

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