请问木焦油和磷酸怎么分离

诚志

我现在碰到磷酸和木焦油混在一起,不知道怎么可以分开,希望各位大吓能给我出出主意,有什么办法吗?谢谢

hfc1943

这个木焦油是如何进到磷酸中的？

plantar

一楼说的这种混合物不是用磷酸和木焦油混和后得到的物料，而是在内热式转炉生产磷酸炭的时候烟道尾气经过降温、沉降、水洗得到的含有磷酸、木焦油、木醋液、水的黑糊糊的东西，对于这个物料，要求能回收里面的磷酸，最好能合理的处理剩余的木焦油和木醋液，这个不能直接排放的，目前这个问题其实是很麻烦的一个问题，希望有经验的老师们说说处理的办法或思路。

hfc1943

如果按3楼所说，那这种回收液实际上各种成分是难以分离的，得换一种思路。
  1、内热式转炉优点很多，但活化剂被气流带走量大和排气污染这两个问题不易解决。当前废气处理的方法，通常是在填料塔中用水喷淋吸收，得到的回收液很脏，磷酸的浓度却不高，而且液体量很大，不但设备的投资大，运行费用也不小，而且处理后的气体还是不易达到排放标准。在环保要求高的地方，例如上海、杭州、广州、烟台等地都早已被淘汰。也正是从这个问题着眼，本人觉得还是外热式转炉较合适。
  2、不过，如果要处理这回收液，消除其污染并将其中磷酸再利用，还是有办法的。本人作过实验室试验，估计在生产上也可行。需专门加工一套设备，而且要消耗较多的能源。

rdcai

思路可以这样子：
; B+ Z4 P) U# U& I( l( Q) l磷酸呈酸性，加石灰把它沉淀下来（磷酸钙的溶解度很小），固液分离后再用酸还原，但是焦油这一块怎么影响我就不得而知了。可以给我发点样品我帮你在实验室试验一下！联系，我的邮箱 rdcai@sina.com,

wende29777

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