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碳酸氨盐水溶液全循环法年产2万吨尿素化工厂设计
摘要
本设计通过把合成氨取得的液氨和在制氨过程中得到的二氧化碳在高温高压下分（一）NH3与CO2的原料供应及净化（二）NH3与CO2合成尿素（三）尿素熔融液与未反应成尿素物质的分离和回收（四）尿素溶液的加工四个步骤进行反应合成尿素。
本课题要是从工程角度对即将毕业的本科生进行一次全面的综合训练过程。主要完成的任务是工艺设计、工艺计算和工程图设计。通过本课程的训练，使得马上就要走上社会相关工作岗位的毕业生对化工生产工艺过程、化工工程图设计和生产管理有一个比较全面的了解。设计包括尿素生产车间布置图，蒸发造粒车间布置图，全厂平面布置图，全厂工艺流程图，设备一览表等六张图。
关键词：水溶液全循环法，尿素，工艺
Thecarbonicacidammoniasaltwaterysolutioncomplete
alternationlawyearlyproduces20,000tonsureachemical
plantsdesign
ABSTRACT
Thisdesignthroughtheliquidammoniaandthecarbondioxidewhichobtainsthesyntheticammoniawhichobtainsinthesystemammoniaprocessunderthehightemperaturehighpressuredivides(1)NH3andtheCO2rawmaterialsuppliesandpurifies(2)NH3andtheCO2synthesisurea(3)ureafusesthefluidwithnottorespondtheureamattertheseparationandrecycles(4)ureasolutiontheprocessingfourstepstocarryonresponsesynthesisurea
ThistopiciftosoonGraduatesfromtheprojectangletheundergraduatestudentcarriesonatimeofcomprehensiveintegratedtrainingprocess.Mainlycompletesthedutyisthetechnologicaldesign,theprocessdesignandtheengineeringplatdesign.Throughthiscurriculumtraining,causesthegraduatewhichmuststepontothesocialcorrelationworkpostimmediatelytothechemicalproductiontechnologicalprocess,thechemicalengineeringplatdesignandtheproductionmanagementhasaquitecomprehensiveunderstanding.Thedesignincludingtheureaproductionworkshopgeneralarrangement,evaporatesmakesthegrainofworkshopgeneralarrangement,entirefactoryfloor-plan,entirefactoryflowchart,equipmentdatasheetandsoonsixcharts.
KEYWORDS:Waterysolutioncompletealternationlaw，urea，craft
目录
TOC\o1-3\h\z\u摘要 I
ABSTRACT II
1．总论 1
1.1设计背景与工程发展状况 1
1.1.1 1
1.2工程设计条件与总平面布置 3
1.2.1尿素的概述 3
1.2.2原料规格及来源 3
1.2.3尿素出厂产品规格 4
1.2.4动力供应 4
1.2.5厂址的选择 4
2碳酸氨盐水溶液全循环法生产尿素工艺概述 5
2.1选择碳酸氨盐水溶液全循