合成氨-尿素装置新增预脱碳系统节能改造方案比选  

Comparison and Selection of Energy-saving Renovation Schemes for the Newly Aolded Pre Decarbonization System in the Ammonia Urea Plant

作　　者：李雅静 邹红 王庆 LI Yajing;ZOU Hong;WANG Qing(CNOOC Petrochemical Engineering Co.,Ltd.,Jinan Shandong 250101,China)

机构地区：[1]中海油石化工程有限公司,山东济南250101

出　　处：《四川化工》2023年第6期27-30,60,共5页Sichuan Chemical Industry

摘　　要：针对某合成氨-尿素装置运行能耗高的现状,结合其变换工段和脱碳工段压力不一致、压缩机分段设置的实际情况,拟新增0.8 MPa预脱碳系统,以实现节能降耗。新增0.8 MPa预脱碳系统采用与原流程相同的碳酸丙烯酯(PC)法脱碳技术,对预脱碳出口气CO_(2)含量设计为8%与设计为15%两种方案进行计算和分析比较,结果显示,两种改造方案均可行,但总的节能效果有限,相较而言预脱碳出口气CO_(2)含量设计为8%的方案节能效果较好。In response to the current situation of high energy consumption in the operation of a certain synthetic ammonia urea unit,combined with the actual situation of inconsistent pressure in the transformation and decarbonization sections,and segmented compressor settings,it is proposed to add a 0.8 MPa pre decarbonization system to achieve energy conservation and consumption reduction.The addition of a 0.8 MPa pre decarbonization system adopts the same decarbonization technology as the original process using propylene carbonate(PC)method.Two schemes,with a CO_(2) content of 8%and 15%in the pre decarbonization effluent,were calculated and analyzed for comparison.The results showed that both transformation schemes were feasible,but the overall energy-saving effect was limited.Compared to the scheme with a CO_(2) content of 8%in the pre decarbonization effluent,the energy-saving effect was better.

关 键 词：合成氨-尿素装置 脱碳系统 碳酸丙烯酯(PC)法 新增预脱碳系统 工艺改造方案 节能分析 核算 思考 

分 类 号：TQ113.2[化学工程—无机化工]