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["estabilizador de de la presión

2017-07-24View Original

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"La temperatura de las tablas de estabilizadoraador siempre ha sido muy alta, la regacción de retorno se abierto, la temperatura de la basea "已底于" ya está muy por abajo "en compa"reación a la temperatura de la tarjeta de la caja de vapor "工艺卡片温度" pero la temperatura de la tabla 47 "塔层己上上" todavía es más alta "高于工艺指标" lo que ha causado que el gas licuado "液化气" contenga C5 "一直5" siempre ha estado en exceso "超标,
Reply #22017-07-25
"¿Cómo ha estado el enfriador de la cima? ¿La temperatura de retorno "已高" ? aumente la presión de la presa de液化气" a presión de presión "适当提高点压力" para reducir la temperatura. analize el grupo de separación脱乙烷汽油" .
Reply #32017-07-25
La temperatura de retorno "回流温度" está normal normal正常" y casi cada tres horas "三个钟" se la presión "冲" está normal "基本正常" . " La presión "压力" está normal "正常" . " ¿La temperatura de la entrada "进料温度" es tal vez muy alta "高 " 或试试换一个入口 "换个进料口试试" � � � " � � � � " � " 查一下塔 cima "塔顶冷却器" � � �改一个入口 "改为下下进料口" 从而避免 "从而避免" 上层淹塔" � � � �进入一个恶循环"恶循环"? �们有一回 "我们我们有一回" 基本也是 "也是基本" � 迟了 "这个情况" 、 "塔底温度 "我们塔底温度" 也降了 "许多" 但 C5 "C55" 仍然在 "仍然" 在 "超标 "超标的" . � " � " "改进料口 "改进料口" 、 增加回流量 "增加回流量" � � � � � "都不管用 "不管用" 最后停工检修 "后来停工检修" 是 "是" � "塔盘脏 " "塔盘脏" 以及 "也" "收收液盘堵塞 "收收液盘也堵" . � "清理干净就OK了 "清理干净就OK了" . " 开多多久了 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " "
Reply #42017-07-25
进料温度是不是高了,或者换个进料口试试,改成下进料口
Reply #52017-07-25
查一下塔顶冷却器,改为下进料,回流太大会不会造成上层淹塔从而进入恶循环? 我们有一回基本也是这个情况,塔底温度降了许多,C5还是超标,改进料口,增加回流量都不管用,后来停工检修,是塔盘脏将升气孔粘住,收液盘也堵,清理干净就OK了
Reply #62017-07-25
开工多长时间了,是不是有塔盘冲翻了?
Reply #72017-07-25
改下进料口把,进料热状态不对,合一下进料温度,是不是换热器有切除的
Reply #82017-07-25
塔顶冷却器投用了吗?回流温度是否高了?
Reply #92017-07-26
改一下进料位置,看看气量大小
Reply #102017-07-26
查一下仪表显示,稳定住操作
Reply #112017-07-26
这个状态应该是塔板有翻的,实在不行就停下来修修吧。
Reply #122017-07-26
上面的师傅说的对,可以的全回流反而恶性循环,是有回流比的,主要确认下进料温度,塔底温度,在汽油初馏点合格情况下也可以降低塔底温度,进料口如果之前运行正常应该问题不大,改下进料口也可以,但是相应的操作要调整。
Reply #132017-07-27
我是初学者,你这种现象工艺上说明汽液相不平衡,气相分压大于液相
Reply #142017-07-27
作为菜鸟,我个人理解就是,在工艺上就是汽液相平衡被打破了,气相负荷大于液相负荷,原因可能是顶压偏低,或者进料温度高,或者进料组成变化了,再就是液相回流的温度是否合适。在设备上就是汽液相传质传热空间即塔盘空间变大,原因有塔盘被吹翻过或者浮阀掉了,导致气速变大。个人建议,先工艺上做调整,提高顶压,降低回流温度,适当降低塔底负荷,调整操作看能否产品合格。调整没有用,怀疑是设备原因时,建议稳定塔切除检查设备。
Reply #152017-07-29
是进料温度偏低吧,有一次我们把稳定塔进料和稳定汽油换热器切出去了,稳定塔进料温度降低10℃,平衡被打破,就是这种情况,投用换热器后恢复正常,提稳定塔进料温度试试。
Reply #162017-08-01
我觉得还是塔盘问题,靠近冷回流的一侧塔盘没堵、或者浮阀没坏;另一侧可能堵着或者浮阀失灵,造成气相偏流,气相中C5组分下不去,顶温下不去。
Reply #172017-08-02
什么操作都有个度,掌握不好,适得其反! 你们这样操作的结果就是不断地冲塔,回流过大使得气相组分得不到充分的释放,结果必然使得塔顶压力过高,为保持压力的稳定,必定走返回气压机入口,这样只能是恶性循环! 先把回流降低点,适当降低点干气压力,使得液相中的轻组分得以释放,逐步恢复平稳! 记得我们这里当初一个领导也是这个思路调整操作的,结果亏得听了我的建议,否则稳定塔安全阀都要起跳了! 有仿真的话,可以在那里做做类似的破坏性试验,基本能反应出你实际操作的一个趋势,只是时间上存在差异!

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