公开(公告)号：US5362458A

公开(公告)日：1994-11-08

申请号：US35284

申请日：1993-03-22

申请人： Abdus Saleem ,  Eli Gal ,  Gregory Brown ,  Michael Mengel

发明人： Abdus Saleem ,  Eli Gal ,  Gregory Brown ,  Michael Mengel

IPC分类号： C01B17/60 ,  B01D53/50 ,  C01C1/24 ,  C01C1/247 ,  C01B17/00

CPC分类号： C01C1/247 ,  B01D53/501

摘要： Process for the removal of sulfur oxides from sulfur oxide-containing gas with simultaneous production of ammonium sulfate. The process is carried out by first passing hot sulfur oxide-containing gas through a prescrubber wherein the gas contacts saturated aqueous ammonium sulfate liquor which is recycled in the prescrubber, followed by passing the prescrubbed gas through an absorber wherein the prescrubbed gas contacts dilute aqueous ammonium sulfate liquor. The sulfur oxide in the sulfur oxide-containing gas is absorbed by the dilute aqueous ammonium sulfate liquor in the absorber, and scrubbed gas is removed from the absorber. The dilute aqueous ammonium sulfate liquor is treated with ammonia and air and the absorbed sulfur dioxide is converted to ammonium sulfate in the liquor. The dilute ammonium sulfate liquor is recycled into contact with the prescrubbed gas in the absorber. Dilute aqueous ammonium sulfate liquor is removed from the absorber and added to the saturated aqueous ammonium sulfate liquor in the prescrubber where it becomes saturated due to evaporation caused by the hot gas. Ammonium sulfate crystals form in the saturated aqueous ammonium sulfate liquor in the prescrubber are recovered as product from saturated aqueous ammonium sulfate withdrawn from the prescrubber.

摘要翻译： 同时生产硫酸铵从含硫氧化物气体中除去硫氧化物的方法。 该方法通过首先将含热硫氧化物的气体通过预浸料进行，其中气体接触饱和的硫酸铵水溶液，其在预浸料中再循环，然后使预混合的气体通过吸收器，其中预浓缩的气体与稀释的铵水溶液接触 硫酸液。 含硫氧化物的气体中的硫氧化物被吸收器中的稀硫酸铵水溶液吸收，并且从吸收器中除去洗涤的气体。 稀释的硫酸铵水溶液用氨和空气处理，吸收的二氧化硫在液体中转化为硫酸铵。 稀释的硫酸铵液体被再循环到与吸收器中的预饱和气体接触。 稀释的硫酸铵水溶液从吸收器中除去并加入到预热器中的饱和硫酸铵水溶液中，由于热气体的蒸发而使其饱和。 在预聚物中的饱和硫酸铵水溶液中形成的硫酸铵晶体作为产物从作为预饱和物的饱和硫酸铵水溶液中回收。

公开(公告)号：US4690807A

公开(公告)日：1987-09-01

申请号：US831381

申请日：1986-02-20

申请人： Abdus Saleem

发明人： Abdus Saleem

IPC分类号： B01D53/50 ,  C01C1/245 ,  C01B17/00 ,  C01C1/24

CPC分类号： C01C1/245 ,  B01D53/501

摘要： Process and apparatus for the removal of sulfur oxides from sulfur oxide-containing gas with simultaneous production of ammonium sulfate. The process is carried out in a single vessel having an ammonium sulfate scrubbing zone; an ammonium sulfate liquor reservoir having a neutralization zone, a sulfur oxide oxidation zone, and a product removal zone; and a scrubbed gas removal zone. The sulfur oxide-containing gas is introduced into the ammonium sulfate scrubbing zone and passes countercurrent to droplets or a spray of ammonium sulfate liquor. The ammonium sulfate liquor absorbs the sulfur oxide in the scrubbing zone, and the liquor having the absorbed sulfur oxide therein collects in the ammonium sulfate liquor reservoir where aqueous ammonia is introduced into the neutralization zone and an oxygen-containing gas is introduced into the sulfur oxide oxidation zone. The sulfur oxide is converted to ammonium sulfate which is circulated from the ammonium sulfate liquor reservoir to the ammonium sulfate scrubbing zone. Ammonium sulfate product is removed from the product removal zone.

摘要翻译： 同时生产硫酸铵，从含硫氧化物的气体中除去硫氧化物的方法和装置。 该方法在具有硫酸铵洗涤区的单个容器中进行; 具有中和区的硫酸铵液体储存器，硫氧化物氧化区和产物去除区; 和洗涤气体去除区。 将含硫氧化物的气体引入硫酸铵洗涤区，并与小滴或硫酸铵液体喷雾逆流通过。 硫酸铵液体吸收洗涤区中的硫氧化物，并且其中具有吸收的硫氧化物的液体收集在硫酸铵液体储存器中，其中将氨水引入中和区，并将含氧气体引入硫氧化物 氧化区。 将硫氧化物转化成硫酸铵，其从硫酸铵液体储存器循环到硫酸铵洗涤区。 将硫酸铵产品从产品去除区域除去。