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一、前言目前,化工厂各种液体余压,特别是中高压吸收塔的余压,有的已经回收,有的尚未回收。有的回收能量多、效率高,有的回收能量少,效率低。例如,国内氮肥厂脱碳溶剂泵的动力消耗,大型厂均有余能回收装置,大部分中型厂也有回收措施,在用碳酸丙烯酯法和水洗法脱碳的大部分小氮肥厂,具有高压头的溶剂余能通过减压阀浪费掉,对正以节能降耗为中心进行技术改造的小氮肥厂来说,是很不经济的。采用涡轮机回收
I. Preface At present, various residual pressure of liquid in chemical plants, especially the residual pressure of medium and high pressure absorption tower, has been recovered and some have not been recovered yet. Some of the energy recovery, high efficiency, and some less energy recovery, low efficiency. For example, the decarbonization of the domestic nitrogen fertilizer plant solvent pump power consumption, large plants have more than I can recover the device, most of the medium-sized plants have recycling measures, with propylene carbonate and water decarbonization decarbonization most of the small nitrogen plant, with high pressure head Of the solvent can be wasted through the pressure-relief valve, and it is not economical for the small-scale nitrogen fertilizer plant that is carrying out technological transformation centering on energy conservation and consumption reduction. Turbine recycling