年产140万吨焦化厂煤气初冷工艺设计

毕业设计题目：年产140万吨焦化厂煤气初冷工艺设计学院：专业：姓名：学号：指导老师：完成时间：河南城建学院本科毕业设计设计说明Ⅰ设计说明本文综述了煤化工工业的发展历史、发展现状及发展趋势，概述了煤气初步冷却的目的意义，并介绍了粗煤气初步冷却工段的工艺流程、工厂的实际经验和某些技术上的改进。着重对粗煤气初步冷却工段进行了物料衡算和热量衡算。通过热量衡算和物料衡算确定了设备的型号，制定了主要非工艺条件，并绘制了初冷器设备图、工艺流程简图。本设计中采用四台冷却面积为3000m2的横管式冷却器；选用D1250-22型，配用电机容量1000kW的离心式鼓风机两台；选用沉淀极管数为120根的电捕焦油器3台；两台规格为V=187m3的机械化氨水澄清槽；Dg=5100mm，H=2500mm，V=50m3的焦油中间槽；选择规格为Dg=5100mm，H=2500mm的初冷器冷凝中间槽。关键词：初冷工段，设计，工艺流程，物料衡算，热量衡算河南城建学院本科毕业设计设计说明IIDesignNotesThisarticlereviewsthehistoryofthedevelopmentofcoalchemicalindustry,developmentstatusanddevelopmenttrends,anoverviewofthepurposeandsignificanceoftheinitialgascooling,andintroducedtheblastcondensingsectionintheprocess,theactualexperienceofthefactoryandsometechnicalimprovements.Focusonthedrumscoldsectioninthematerialbalanceandheatbalance.Byheatbalanceandmaterialbalanceoperatortodeterminethetypeofequipment,developedamajornon-processconditions,anddrawingequipmentlayoutplanoftheearlycoldequipmentdiagrams.Fourcoolingareaof3000m2horizontaltubecoolerinthisdesign,selectedD1250-22typewithamotorcapacityof1000kWcentrifugalblowertwo,Theprecipitationofelectricdetarrerspolartubenumber120root3,TwospecificationsfortheVis187m3mechanizationammoniaclarifyslot,Dgis5100mmHis2500mm,Vis50m3tarintermediatetank,selectspecificationsforDgis5100mmHis2500mmprimarycoolercondensingthemiddleslot.Keywords:colddrumsection,design,process,materialbalance,heatbalance河南城建学院本科毕业设计目录i目录设计说明...........................................................................................................................IDesignNotes....................................................................................................................II引言...............................................................................................................................11文献综述........................................................................................................................21.1煤化工工业发展简史.........................................................................................21.2世界炼焦工业的发展.........................................................................................31.3中国焦化工业现状.............................................................................................41.3.1如何提高焦炭质量..................................................................................41.3.2炼焦生产发展的趋势..............................................................................51.3.3炼焦化学工业..........................................................................................61.3.4焦炉煤气利用现状及发展思路..............................................................61.4煤气的冷却原理及改进....................................................................................71.4.1煤气的冷却原理......................................................................................71.4.2焦炉煤气冷凝工艺的改进......................................................................81.4.3煤气的鼓风工艺......................................................................................91.4.4鼓风工艺的改进......................................................................................91.4.5焦油、氨水的分离................................................................................102设计内容与工艺方案及选型......................................................................................122.1设计内容与方法...............................................................................................122.2设备选择原则...................................................................................................132.3三中煤气冷凝方法的优缺点及本设计的选型...............................................132.3.1间接冷却................................................................................................................142.3.2直接冷却................................................................................................152.3.3间直冷却................................................................................................182.4各种鼓风机的优缺点及本设计的选型...........................................................182.4.1离心式鼓风机的构造............................................................................192.4.2罗茨鼓风机的构造................................................................................203煤气的鼓风冷凝工段的工艺计算..............................................................................213.1集气管的工艺计算...........................................................................................213.1.1原始数据.................................................................................................213.1.2物料平衡.................................................................................................223.1.3热平衡.....................................................................................................243.2两段冷却流程的横管式煤气初冷器的初步冷却工艺计算及选型...............30河南城建学院本科毕业设计目录ii3.2.1横管式煤气初冷器的物料衡算............................................................313.2.2进入横管初冷器的物料组成................................................................313.2.3一段初冷器出口煤气中水蒸汽的计算................................................323.2.4二段初冷器出