公开(公告)号：US06551570B1

公开(公告)日：2003-04-22

申请号：US09509773

申请日：2000-05-30

申请人： James W. Smith ,  Silvano Meffe ,  Peter S. Walton ,  David T. R. Ellenor

发明人： James W. Smith ,  Silvano Meffe ,  Peter S. Walton ,  David T. R. Ellenor

IPC分类号： C01B1704

CPC分类号： C10L3/102 ,  B01D53/1468 ,  B01D53/1493 ,  B01D53/52 ,  B01D2257/304 ,  C01B17/05 ,  C10L3/10

摘要： Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide to produce sulfur. The reaction is effected in a reaction medium comprising a non-aqueous Lewis base with a pKb value of about 6 to about 11. The reaction medium possesses a specific combination of properties: a) absorbs sulfur dioxide and reacts chemically therewith to form a reaction product; b) absorbs hydrogen sulfide; c) removes the hydrogen sulfide from the gas stream through contact of the gas stream with the reaction medium in the presence of free sulfur dioxide, and/or the reaction product; d) acts as a catalyst for the overall reaction of the hydrogen sulfide with sulfur dioxide to produce sulfur; and (e) has the capacity to absorb sulfur dioxide in sufficient quantity to remove substantially all the hydrogen sulfide from the gas stream, notwithstanding short term variations in the stoichiometric balance between the hydrogen sulfide and the sulfur dioxide in the reaction medium.

摘要翻译： 通过与二氧化硫反应从硫气中除去硫化氢以产生硫。 反应在包含pKb值为约6至约11的非水路易斯碱的反应介质中进行。反应介质具有以下特性的特定组合：a）吸收二氧化硫并与其反应以形成反应产物 ; b）吸收硫化氢; c）在游离二氧化硫和/或反应产物存在下，通过气流与反应介质的接触从气流中除去硫化氢; d）充当催化剂 硫化氢与二氧化硫的总反应产生硫; 和（e）尽管在反应介质中的硫化氢和二氧化硫之间的化学计量平衡的短期变化，但是能够以足够的量吸收二氧化硫以从气流中除去基本上所有的硫化氢。

公开(公告)号：US06627110B1

公开(公告)日：2003-09-30

申请号：US09439500

申请日：1999-11-12

申请人： James W. Smith ,  Silvano Meffe ,  Peter S. Walton ,  David T. R. Ellenor

发明人： James W. Smith ,  Silvano Meffe ,  Peter S. Walton ,  David T. R. Ellenor

IPC分类号： C09K300

CPC分类号： C10L3/102 ,  B01D53/1468 ,  B01D53/1493 ,  B01D53/52 ,  B01D2257/304 ,  C01B17/05 ,  C10L3/10

摘要： Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide to produce sulfur. The reaction is effected in a reaction medium comprising a non-aqueous Lewis base with a pKb value of about 6 to about 11. The reaction medium possesses a specific combination of properties: a) absorbs sulfur dioxide and reacts chemically therewith, the reaction medium containing hydrogen sulfide, sulfur and water to form complex sulfur-oxide species, including sulfate and polythionate species, whereby the resulting solution exhibits no or an insignificant sulfur dioxide vapor pressure; b) absorbs hydrogen sulfide; c) removes the hydrogen sulfide from the gas stream through contact of the gas stream with the reaction medium in the presence of the complex sulfur-oxide species; d) acts as a catalyst for the overall reaction of the hydrogen sulfide with sulfur dioxide to produce sulfur; and (e) has the capacity to absorb sulfur dioxide in sufficient quantity to remove substantially all the hydrogen sulfide from the gas stream, notwithstanding short term variations in the stoichiometric balance between the hydrogen sulfide and the sulfur dioxide in the reaction medium. The reaction medium may be preloaded with sulfur dioxide, whereby the complex sulfur-oxide species are preformed in the reaction medium before contacting with the gas stream.

摘要翻译： 通过与二氧化硫反应从硫气中除去硫化氢以产生硫。 反应在包含pKb值为约6至约11的非水路易斯碱的反应介质中进行。反应介质具有以下特性的特定组合：a）吸收二氧化硫并与其反应，含有 硫化氢，硫和水，以形成复合的硫氧化物物质，包括硫酸盐和多硫酸盐物质，由此所得溶液表现出无或不显着的二氧化硫蒸汽压力; b）吸收硫化氢; c）从气流中除去硫化氢 通过在复合硫氧化物存在下气流与反应介质的接触; d）充当硫化氢与二氧化硫总体反应产生硫的催化剂; 和（e）尽管在反应介质中硫化氢和二氧化硫之间的化学计量平衡的短期变化，但是能够以足够的量吸收二氧化硫以从气流中除去基本上所有的硫化氢。反应介质 可以预先装入二氧化硫，由此在与气流接触之前，在反应介质中预处理复合硫氧化物。

公开(公告)号：US6096280A

公开(公告)日：2000-08-01

申请号：US43844

申请日：1998-07-15

申请人： David T. R. Ellenor ,  Silvano Meffe ,  James W. Smith ,  Peter S. Walton

发明人： David T. R. Ellenor ,  Silvano Meffe ,  James W. Smith ,  Peter S. Walton

IPC分类号： B01D53/52 ,  C01B17/05 ,  C10L3/10 ,  C01B17/04

CPC分类号： C01B17/05 ,  B01D53/52 ,  B01D53/523 ,  C10L3/10

摘要： Hydrogen sulfide is removed from gas streams by reaction with sulfur dioxide in an autogeneously-formed aqueous acid medium according to the equation: SO.sub.2 +2H.sub.2 S.fwdarw.2H.sub.2 O+3S the sulfur being removed from the aqueous phase. Carbonyl sulfide and/or carbon disulfide is removed from gas streams by hydrolysis to hydrogen sulfide in the presence of a weak organic base catalyst, such as quinoline, with the hydrogen sulfide reacting with sulfur dioxide to form sulfur.

摘要翻译： PCT No.PCT / CA97 / 00536 Sec。 371日期：1998年7月15日 102（e）1998年7月15日PCT PCT 1997年7月28日PCT公布。 公开号WO98 / 04337 日期1998年2月5日根据下列方程式，在自发形成的含水酸性介质中与二氧化硫反应，从气流中除去硫化氢：SO 2 + 2H 2 S→2H 2 O + 3S，从水相中除去硫。 在弱有机碱催化剂如喹啉存在下，将羰基硫化物和/或二硫化碳从气流中通过水解除去硫化氢，硫化氢与二氧化硫反应形成硫。