公开(公告)号：US20030039606A1

公开(公告)日：2003-02-27

申请号：US09938519

申请日：2001-08-27

Applicant: Haldor Topsoe A/S

Inventor： Peter Schoubye ,  Kurt Agerbaek Christensen

IPC: C01B017/64

CPC classification number: C01B17/64

Abstract: A process for production of ammonium thiosulphate (ATS) from H2S, NH3 and SO2, comprising producing ATS in a first absorption step by treating a first stream comprising H2S and NH3 with more than 0.3 mole H2S per mole NH3 with a solution containing ATS and ammonium sulphite, said solution being produced, in a second absorption step, by treating part of the solution from the first absorption step with a second gas stream gas stream comprising SO2. The second gas stream is obtained by combusting the H2S-containing off gas from the first absorption step supplemented with H2S-containing gas imported from other sources and/or by importing SO2-containing off gas streams from other souses. The content of NH3 in the off gas from the second absorber may be decreased by adding the equivalent amount of SO2 to the off gas upstream of an aerosol filter removing the NH3 and SO2 as a solution of NH4HSO3, which is fed to the first or second absorber, while the off gas from the filter is passed to the atmosphere.

Abstract translation: 一种从H 2 S，NH 3和SO 2生产硫代硫酸铵（ATS）的方法，其包括在第一吸收步骤中通过用含有ATS和铵的溶液处理含有大于0.3摩尔H 2 S /摩尔NH 3的H 2 S和NH 3的第一物流 在第二吸收步骤中，通过用包含SO 2的第二气流气流处理来自第一吸收步骤的溶液的一部分来生产所述溶液。 通过从补充有从其他来源进口的含有H 2 S的气体的第一吸收步骤和/或从其他souses进口含SO 2的废气流来燃烧含有H 2 S的废气来获得第二气流。 通过向去除NH 3和SO 2的气溶胶过滤器上游的废气中加入等量的SO 2，可以减少来自第二吸收器的废气中的NH 3，作为NH 4和SO 2的溶液，其被供给到第一或第二 吸收器，而来自过滤器的废气通过大气。