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双塔精馏单元装置仿真系统使用手册（教师/学员）使用手册目录3一，工艺原理简述······································································································2二，工艺流程简介······································································································2三，设备列表············································································································2四，调节器列表·········································································································3五，显示仪表············································································································3六，现场阀列表·········································································································4七，物料平衡和工艺卡片·····························································································5八，操作规程············································································································61，正常开工··············································································································································62，正常运行··············································································································································73，正常停车··············································································································································74，停原料油进料······································································································································85，再沸器E-101结垢······························································································································86，停冷却水··············································································································································87，装置停电··············································································································································98，项目列表··············································································································································9九，双塔精馏仿真PI&D图·························································································11十，双塔精馏DCS流程图··························································································13使用手册一，工艺原理简述精馏是化工生产中分离互溶液体混合物的典型单元操作，其实质是多级蒸馏，即在一定压力下，利用互溶液体混合物各组分的沸点或者饱和蒸汽压不同，使轻组分（沸点较低或饱和蒸汽压较高的组分）汽化，经多次部分液相汽化和部分气相冷凝，使气相中的轻组分和液相中的重组分浓度逐渐升高，从而实现分离。料板为界，上部为精馏段，下部为提馏段。一定温度和压力的料液进入精馏塔后，轻组分在精馏段逐渐浓缩，离开塔顶后全部冷凝进入回流罐，一部分作为塔顶产品（也叫馏出液），另一部分被送入塔内作为回流液。回流液的目的是提供与气相轻组分传质、传热的组成，使塔板上的液体组成保持稳定，保证精馏操作连续稳定的进行。而重组分在提馏段浓缩后，一部分作为塔釜产品（也叫残液），一部分则经再沸器加热后送回塔中，为精馏操作提供一定量连续上升的蒸气气流。二，工艺流程简介本单元选用的是脱丁烷和脱乙烷双塔精馏工艺，原料油分别进入脱丁烷塔T101第28、22层塔盘，T101共有40层浮阀塔盘。塔顶气经脱丁烷塔空冷器、脱丁烷塔顶后冷器冷却至40℃后进入脱丁烷塔顶回流罐进行油、水、气三相分离。罐中分离出的塔顶干气在压力控制下至轻烃吸收塔；D101的油相分两路，一路经脱丁烷塔顶回流泵升压后在流量和塔顶温度串级控制下作为T101回流。另一路经脱乙烷塔进料泵升压后在D101液位和流量串级控制下进入脱乙烷塔T102的第二段填料上部；D101分水包排出的含硫污水排出装置。脱丁烷塔塔底油流量及T101液位控制下作为常压塔的进料。T101热量由塔底再沸器提供，脱丁烷塔塔底油经脱丁烷塔底再沸器泵升压后分两路在流量控制下进入E101加热后返回到T101底部。E101的出口温度由调节E101加热气量控制。T102脱乙烷塔设置三段散堆填料。塔顶气相经脱乙烷塔顶冷凝冷却器冷却至40度后进入脱乙烷塔顶回流罐D102，D102的压力通过调节塔顶气的排出量来控制，塔顶干气去轻烃吸收塔回收液态烃。D102液体经脱乙烷塔顶回流泵升压后全部作为塔顶回流。脱乙烷塔采用重沸汽提，汽提热源为航煤。塔底物流经液化石油气冷却器冷却至40度作为液化气送出装置。三，设备列表序号位号名称说明1T101脱丁烷塔2T102脱乙烷塔3D101脱丁烷塔缓冲罐4D102脱乙烷塔缓冲罐使用手册5A101脱丁烷塔塔顶空冷器6E101脱丁烷塔再沸器7E102脱丁烷塔塔顶换热器8E103脱乙烷塔再沸器9E104脱乙烷塔塔釜出口冷却器10E105脱乙烷塔塔顶换热器11P101脱丁烷塔缓冲罐回流泵12P102输送脱乙烷塔进料泵13P103脱乙烷塔缓冲罐回流泵四，调节器列表控制器位号描述正常值单位TIC1001T101的塔釜温度控制275℃FIC1001T101的塔顶回流流量控制17458Kg/hFIC1002T101的塔釜出口流量控制93200Kg/hTIC1003A101出口温度控制70℃PIC1001D101回流罐压力控制1.5MpaGLIC1003D101回流罐水包液位控制50%LIC1002D101回流罐油包液位控制50%TIC1004T102的塔釜温度控制110℃LIC1006T102塔釜液位控制50%FIC1003T102的塔顶回流流量控制4300Kg/hPIC1002D102回流罐压力控制3.15MpaGLIC1004D102回流罐水包液位控制50%LIC1005D-102回流罐油包液位控制50%LIC1001T101的塔釜液位控制50%TIC1002T101塔顶温度控制75℃五，显示仪表位号显示变量正常值单位FI1001T101塔进料93000Kg/hTI1001回流罐D101温度40.5℃TI1002T102的塔顶温度96℃TI1003回流罐D102温度40℃使用手册六，现场阀列表现场阀门位号描述TV1001I温度控制阀门TV1001的前阀FV1001O流量控制阀门FV1001的后阀FV1001I流量控制阀门FV1001的前阀FV1002I流量控制阀门FV1002的前阀FV1002O流量控制阀门FV1002的后阀PV1001O压力控制阀门PV1001的后阀PV1001I压力控制阀门PV1001的前阀PV1002I压力控制阀门PV1002的前阀PV1002O压力控制阀门PV1002的后阀LV1003I液位控制阀门LV1003的前阀LV1003O液位控制阀门LV1003的后阀TV1004I温度控制阀门TV1004的前阀TV1004O温度控制阀门TV1004的后阀FV1003I流量控制阀门FV1003的前阀FV1003O流量控制阀门FV1003的后阀LV1006I液位控制阀门LV1006的前阀LV1006O液位控制阀门LV1006的后阀LV1004I液位控制阀门LV1004的前阀LV1004O液位控制阀门LV1004的后阀TV1001O温度控制阀门TV1001的后阀LV1002I液位控制阀门LV1002的前阀LV1002O液位控制阀门LV1002的后阀TV1001T101的塔釜温度控制阀门TV1001B温度控制阀门TV1001的旁路阀FV1001T101的塔顶回流流量控制阀门FV1001B流量控制阀门FV1001的旁路阀FV1002T101的塔釜出口流量控制阀门FV1002B流量控制阀门FV1002的旁路阀VX1E102E102冷却水阀门VX1T101T101塔釜泄液阀门VX2T101T101塔顶放空阀门TV1003A101出口温度控制阀门使用手册PV1001D101回流罐压力控制阀门PV1001B压力控制阀门PV1001的旁路阀LV1003D101回流罐水包液位控制阀门LV1003B液位控制阀门LV1003的旁路阀VX1D101D101泄液阀VX2D101D101放空阀LV1002D101回流罐油包液位控制阀门LV1002B液位控制阀门LV1002的旁路阀TV1004T102的塔釜温度控制阀门TV1004B温度控制阀门TV1004的旁路阀VX1E104E-104冷却水阀门VX1T102T102塔釜泄液阀门VX2T102T102塔顶放空阀门LV1006T102塔釜液位控制阀门LV1006B液位控制阀门LV1006的旁路阀FV1003T102的塔釜出口流量控制阀门FV1003B流量控制阀门FV1003的旁路阀VX1E105E105冷却水阀门VX1D102D102泄液阀VX2D102D102放空阀PV1002D102回流罐压力控制阀门PV1002B压力控制阀门PV1002的旁路阀LV1004