The utility model discloses supeus negative pressure ammonia distillation tower, comprising a tower body (2) and fill in the tower body filler, the upper part of the tower body is provided with ammonia inlet (3) and the condenser (5), interface ammonia inlet and condenser located at the interface of liquid distributor (10) above the liquid distributor is provided in the packing body above, in the tower body is arranged below the import cycle ammonia waste heat (1), dephlegmator pipe interface is connected with the vacuum pump cycle ammonia waste heat inlet in the fill below the filler layer by layer of filler and filler layer II and III composition and with filler layer corrugated plate packing form, the utility model makes full use of the circulating ammonia waste heat as heat source and a variety of specifications of corrugated plate packing, not only saves the steam energy, but also reduces the waste ammonia water, reduce environmental pollution, reduce equipment. The utility model has the advantages that the equipment investment is saved, the cost of ammonia treatment is reduced, and the effect of ammonia treatment is improved.
【技术实现步骤摘要】
本技术涉及精馏蒸氨设备,尤其是涉及一种剩余氨水负压蒸氨塔。
技术介绍
在现有焦化行业生产过程中一般都用氨水对荒煤气进行冷却,因而会产生热氨水,除一部份热氨水用于焦炉集气管循环冷却外,其余为剩余氨水。剩余氨水主要来自焦化配合煤的外来水份和焦化中产生的化合水,其总量约占干煤重的10%,其剩余氨水成为焦化生产过程的废水,由于剩余氨水中含有较多的挥发氨、固定氨、硫化氢等严重污染环境的有害物质,必须经过蒸氨处理达标后才能进入生化系统处理,最后达到排放标准才能外排。但现有蒸氨塔在蒸氨时会出现气流在液相中偏析现象,气液两相接触不充分,不仅热能消耗大,而且蒸氨效率低,处理效果不高。
技术实现思路
针对上述现有技术中蒸氨塔在进行剩余氨水处理时所存在的问题,本技术提供了一种不需消耗蒸汽热能,节能效果好,而且蒸氨效率高,处理效果好的剩余氨水负压蒸氨塔。本技术要解决的技术问题所采取的技术方案是:所述剩余氨水负压蒸氨塔包括塔体和填充在塔体内的填料,所述塔体上部设置有氨水进口和分缩器接口,所述氨水进口和分缩器接口位于液体分布器上方,液体分布器设置在填料上面,在塔体底部设置有焦油放空槽接口,在塔体顶部设置有氨气出口,所述分缩器接口管路上连接有真空泵,在塔体下部设置有循环氨水余热进口,所述循环氨水余热进口位于填料下方,所述填料从上至下依次为填料层1、填料层II和填料层III,填料层均用波纹板式填料形成,所述填料层1、填料层II和填料层III的堆积密度从上至下逐渐增大。本技术由于采用负压蒸氨并充分利用了循环氨水余热作为热源,不仅节省了蒸汽能源,而且减少了蒸氨废水量,降低了环境污染,降低了设备技术 ...
【技术保护点】
剩余氨水负压蒸氨塔,它包括塔体(2)和填充在塔体内的填料,所述塔体上部设置有氨水进口(3)和分缩器接口(5),所述氨水进口和分缩器接口位于液体分布器(10)上方,液体分布器设置在填料上面,在塔体底部设置有焦油放空槽接口(9),在塔体顶部设置有氨气出口(4),所述分缩器接口管路上连接有真空泵,其特征是:在塔体下部设置有循环氨水余热进口(1),所述循环氨水余热进口位于填料下方,所述填料从上至下依次为填料层Ⅰ(6)、填料层Ⅱ(7)和填料层Ⅲ(8),填料层均用波纹板式填料形成,所述填料层Ⅰ、填料层Ⅱ和填料层Ⅲ的堆积密度从上至下逐渐增大。
【技术特征摘要】
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