【判断题】
深冷分离流程概括为三大代表性流程，即顺序流程，前加氢流程，后加氢流程
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相关试题
【判断题】
裂解气的深冷分离原理是在低温条件下，将氢及甲烷以上更重的烃都冷凝下来，然后利用各烃的相对挥发度的差异，在精馏塔内进行多组分的分离,最后再利用精馏得到高纯度的乙烯、丙烯及其它烃类
【判断题】
飞温是在很短的时间内，床层局部温度急剧上升的现象
【判断题】
精馏塔的全回流是指塔顶馏出物经冷凝后全部作为塔的回流，塔顶没有采出
【判断题】
脱丁烷塔全回流操作是很危险的，它能在塔内形成浓度很高的乙基乙炔;丁二烯容易引起爆炸
【判断题】
裂解气中乙炔是由于裂解炉注硫泵不上量造成的
【判断题】
裂解气中水是由于裂解过程中的水煤气反应产生的
【判断题】
裂解过程中，若注硫泵不上量，则裂解气中一氧化碳含量会降低
【判断题】
循环乙烷中带甲醇，进入裂解炉裂解后，则裂解气中一氧化碳含量会升高
【判断题】
开车过程中冷泵如来不及预冷，可以不进行预冷
【判断题】
碳三反应器在开车初期不配氢，是因为此时MAPD含量较少，对产品没有影响
【判断题】
碳三反应器开车时,氢气(补压线)根部阀应关闭,防止氢气窜入反应器,影响催化剂活性及选择性
【判断题】
碳二加氢系统的7℃丙烯冷剂在开车时可用以冷却床层，在床层飞温时可用于床层降温
【判断题】
甲烷化反应为CO+3H2=CH4+H2O+Q
【判断题】
碳二加氢除了脱除乙炔外,还能部分脱除MAPD
【判断题】
碳三加氢系统V-530设置低液位联锁是防止二段进料流量过低，引起沟流，导致床层飞温
【判断题】
碳三加氢催化剂使用初期，催化剂活性高，但选择性不好
【判断题】
甲烷化反应器氮气升温前，其进料预热器应预热好，凝液畅通
【判断题】
膨胀机的密封气通过轴承箱的差压过低，会使膨胀机紧急停车
【判断题】
甲烷化反应器开车前不能直接用氢气升温，防止氢气中的一氧化碳在150℃以下时会与镍生成巨毒物质羰基镍
【判断题】
脱乙烷塔压力低低联锁的联锁值是2.0Mpa
【判断题】
碳二加氢反应配入CO的目的是为了提高催化剂的活性，让更多的炔烃尽可能地转化为烯烃
【判断题】
用于解冻的甲醇含水量应小于0.15wt%.
【判断题】
精馏塔操作不平稳时，进出料可能暂时出现不平衡
【判断题】
回流比的大小对精馏塔塔板数和进料位置的设计起着重要的作用
【判断题】
正常停车前，各干燥器至少有一台再生完毕，反应器应有备用台
【判断题】
干燥器切换时，确认备用台进出口阀已完全打开，才能切出在用台
【判断题】
塔釜再沸器切换时，首先必须对备用台进行预热，预热合格后才能通入液相物料.
【判断题】
塔釜再沸器切换时，首先必须对备用台进行预热，预热合格后才能通入液相物料
【判断题】
碳二加氢反应器出口分析氢气，可分析判断催化剂活性，选择性
【判断题】
碳二加氢反应器出口控制乙炔<5ppm，目的是防止乙烷中乙炔超标，影响裂解炉的运行周期
【判断题】
正常操作时，碳三加氢反应器出口MAPD偶尔少量超标也没关系，因为MAPD可通过精馏法除去
【判断题】
对碳三加氢反应器出口物料进行分析，可以判断催化剂活性，选择性，并可控制丙烯产品中的炔含量
【判断题】
脱甲烷塔顶压力设计指标为3.082MPa
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