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2017-05-29View Original

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我装置液液环丁砜抽提1,现在出现一个问题,混芳的溴指数达到290,我增加了反洗比(主任认为是重质烯烃,将下反洗手阀全开),请问都什么原因引起的混芳溴指数高?我还应该如何调整?苯白土塔进料的溴指数有什么要求??苯产品溴指数在10左右,合格! 2,之前一段时间脱庚烷塔底温稍高,塔顶带二甲苯大于指标2%,塔底甲苯小于0.1%,脱庚烷塔底溴指数1400~1700(和重整反应或预加氢系统有关系吗?),会不会因为温度高把不饱和烯烃蒸上去,进入抽提系统? 3,抽提进料对溴指数有什么要求吗?
Reply #22017-05-29
你物理抽提溴指数高和你有关系吗?
Reply #32017-05-29
对溴指数肯定有要求的,我们在进庚烷塔前的白土塔后会控制溴指数,否则烯烃会被带入庚烷塔,造成抽提原料烯烃过高,,,
Reply #42017-05-30
感觉你这烯烃含量如此高,返洗比已经很难起多大作用了。混芳溴指数那么高,我想问一下你们苯塔侧线馏出的苯溴指数多少?白土塔能催化吸附那么多烯烃么,而且会加速白土塔失活。还是看看抽提进料里面烯烃含量,主要还是重整反应,避免温度太高产生那么多烯烃。
Reply #52017-06-02
抽提混芳溴指数高,影响白土寿命啊!!怎么没关系呢!!
Reply #62017-06-02
苯白土塔后(即苯塔进料)溴指数170,有时候高达200,但是苯侧线溴指数始终在10左右。 我们厂的燃料气系统压力不稳,燃料气组分也时好时坏,有时候氮含量高,有时候氢气含量高;反应热值上不去,有时阻火器还总堵(铵盐),所以反应温度不会超,只会低!

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