标题: 请问木焦油和磷酸怎么分离 [打印本页] 作者: 诚志 时间: 2007-10-7 22:12 标题: 请问木焦油和磷酸怎么分离 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?谢谢作者: hfc1943 时间: 2007-10-8 22:15
这个木焦油是如何进到磷酸中的?作者: plantar 时间: 2007-10-9 15:16
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。作者: hfc1943 时间: 2007-10-10 15:35
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。3 d/ L+ G/ @, k9 l8 O, h9 Y, d6 h* v: P
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。 ; \6 F4 B: W" ?- Q, N) k& z& ^% l 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。作者: rdcai 时间: 2009-5-23 10:36
思路可以这样子:- u A5 Q; k3 f/ [
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,作者: reyesmario02 时间: 2011-7-30 14:20
提示: 作者被禁止或删除 内容自动屏蔽作者: wende29777 时间: 2011-8-5 18:59
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