专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US3709983A Continuous process for scrubbing h2s from a gas stream and selectively producing elemental sulfur 失效
标题翻译：从气体流中抽出H2S并选择生产元素硫的连续过程
公开(公告)号：US3709983A
公开(公告)日：1973-01-09
申请号：US3709983D
申请日：1971-07-19
申请人： UNIVERSAL OIL PROD CO
发明人： HAMBLIN R
IPC分类号： B01D53/52 , C01B17/06 , C10K1/12 , C01B17/04
CPC分类号： C10K1/121 , B01D53/523 , C01B17/06
摘要： H2S IS REMOVED FROM A GAS STREAM AND SULFUR IS PRODUCED BY THE STEPS OF: (1) SEQUENTIALLY SCRUBBING THE GAS STREAM WITH A FIRST RECYCLE WATER STREAM CONTAINING NH4OH AND THEN WITH A SECOND RECYCLE WATER STREAM WHICH IS SUBSTANTIALLY FREE OF ANY NH4OH TO PRODUCE A TREATED GAS STREAM WHICH IS REDUCED H2A CONTENT AND IS SUBSTANTIALLY FREE OF NH3 AND A RICH ABSORBENT STREAM CONTAINING NH4HS; (2) CATALYTICALLY REACTING THE RICH ABSORBENT STREAM WITH A FIRST AIR STREAM TO PRODUCE AN EFFLUENT STREAM CONTAINING AMMONIUM POLYSULFIDE; (3) CATALYTICALLY REACTING THE RESULTING AMMONIUM POLYSULFIDE-CONTAINING LUQID STREAM WITH A SECOND AIR STREAM AT OXIDIZING CONDITIONS EFFECTIVE TO PRODUCE LIQUID SULFUR AND A SUBSTANTIALLY SULFIDE-FREE WATER STREAM CONTAINING NH3OH AND A MINOR AMOUNT OF (NH4)2SO3 (4) STRIPPING NH3 FROM AT LEAST A PORTION OF THIS LAST WATER STREAM IN ORDER TO PRODUCE A WATER STREAM WHICH IS SUBSTANTIALLY FREE OF AMMONIA AND SULFIDE; AND (5) SEPARATELY RECYCLING A PORTION OF THE WATER STREAM FORMED IN STEP (3) AS THE FIRST RECYCLE WATER STREAM AND A PORTION OF THE WATER STREAM FORMED IN STEP (4) AS THE SECOND RECYCLE WATER STREAM TO THE SCRUBBING STEP.

2. 发明授权

US3715426A Continuous process for scrubbing h2s from a gas stream and selectively producing elemental sulfur using four recycle water streams 失效
标题翻译：从气体流中吸收H2S的连续过程，并选择使用四种循环水流选择生产元素硫
公开(公告)号：US3715426A
公开(公告)日：1973-02-06
申请号：US3715426D
申请日：1971-07-30
申请人： UNIVERSAL OIL PROD CO
发明人： HAMBLIN R
IPC分类号： C01B17/05 , C01B17/06
CPC分类号： C01B17/05
摘要： H2S is removed from a gas stream and sulfur is selectively produced by the steps of: (1) sequentially scrubbing the gas with a first recycle water stream containing NH4OH and then with a second recycle water stream which is substantially NH4OH-free to produce a treated gas stream, which is reduced in H2S content and is substantially free of NH3, and a rich absorbent stream containing NH4HS; (2) catalytically reacting a portion of the rich absorbent stream and a third recycle water stream containing NH4HS and NH4OH with a first air stream to produce a liquid stream containing ammonium polysulfide and a gas stream containing NH3, H2S, H2O and N2; (3) catalytically reacting the liquid stream from step (2) and a fourth recycle water stream containing ammonium polysulfide with a second air stream to form a substantially sulfide-free water stream containing NH4OH and (NH4)2S2O3, a gas stream containing NH3, H2O and N2 and a liquid sulfur stream; (4) recovering a portion of the water stream from step (3) as at least a portion of the first recycle water stream and passing same to step (1); (5) stripping NH3 from another portion of the water stream formed in step (3) to make a sulfideand ammonia-free water stream containing (NH4)2S2O3; (6) passing a portion of the water stream from step (5) to step (1) as the second recycle water stream; (7) reacting another portion of the water stream from step (5) and another portion of the rich absorbent stream to form the fourth recycle water stream and passing same to step (3); and (8) scrubbing NH3 and H2S from the gas streams produced in steps (2) and (3) to form the third recycle water stream and passing same to step (2).
摘要翻译：从气流中除去H 2 S，并通过以下步骤选择性地生成硫：（1）用含有NH 4 OH的第一循环水流然后用基本上不含NH 4 OH的第二循环水流依次洗涤气体，以产生处理过的气流，其H2S含量降低并且基本上不含NH 3，以及富含NH 4 HS的吸收剂流; （2）使富含吸收剂流的一部分和含有NH 4 HS和NH 4 OH的第三循环水流与第一空气流催化反应，以产生含有多硫化铵的液体流和含有NH 3，H 2 S，H 2 O和N 2的气流; （3）使来自步骤（2）的液体物流和含有多硫化铵的第四再循环水流与第二空气流催化反应，以形成含有NH 4 OH和（NH 4）2 S 2 O 3的基本上无硫化物的水流，包含NH 3， H 2 O和N 2和液态硫流; （4）将作为至少一部分第一再循环水流的步骤（3）的一部分水流回收到步骤（1）; （5）从步骤（3）中形成的水流的另一部分汽提NH 3以制备含有（NH 4）2 S 2 O 3的硫化物和无氨水流; （6）将来自步骤（5）的水流的一部分作为第二循环水流通入步骤（1）; （7）使来自步骤（5）的另一部分水流与富吸收物流的另一部分反应，形成第四再循环水流并通过步骤（3）; 和（8）从步骤（2）和（3）中产生的气流中洗涤NH 3和H 2 S以形成第三循环水流，并将其通入步骤（2）。

3. 发明授权

US3728440A Continuous process for scrubbing hydrogen sulfide from a gas stream and selectively producing elemental sulfur while minimizing thiosulfate make 失效
标题翻译：从气体流中洗涤氢硫化物的连续方法，并选择最小化硫代硫酸盐制造元素硫
公开(公告)号：US3728440A
公开(公告)日：1973-04-17
申请号：US3728440D
申请日：1971-07-19
申请人： UNIVERSAL OIL PROD CO
发明人： HAMBLIN R
IPC分类号： C01B17/05 , C01B17/04
CPC分类号： C01B17/05
摘要： H2S is removed from a gas stream and sulfur is selectively produced by the steps of: (1) sequentially scrubbing the gas stream with a first recycle water stream containing NH4OH and then with a second recycle water stream which is substantially free of any NH4OH to produce a treated gas stream which is reduced H2S content and is substantially free of NH3 and a rich absorbent stream containing NH4HS; (2) catalytically reacting a portion of the rich absorbent stream and a third recycle water stream containing ammonium polysulfide and NH4HS with a first air stream to produce an effluent stream containing ammonium polysulfide; (3) catalytically reacting the resulting ammonium polysulfide-containing liquid stream with a second air stream at oxidizing conditions effective to produce liquid sulfur and a substantially sulfide-free water stream containing NH4OH and a minor amount of (NH4)2S2O3; (4) stripping NH3 from at least a portion of this last water stream in order to produce a water stream which is sbustantially free of ammonium and sulfide; (5) separately recycling a portion of the water stream formed in step (3) as a portion of the first recycle water stream and a portion of the water stream formed in step (4) as the second recycle water steram to the scrubbing step; and, (6) reacting another portion of the water stream formed in steps (4) with another portion of the rich absorbent stream at thiosulfate reduction conditions to form at least a portion of the third recycle water stream and passing same to step (2).
摘要翻译：从气流中除去H 2 S，并通过以下步骤选择性地生成硫：（1）用含有NH 4 OH的第一再循环水流，然后用基本上不含任何NH 4 OH的第二循环水流依次洗涤气流以产生经处理的气流，其减少H 2 S含量并且基本上不含NH 3和富含NH 4 HS的吸收剂流; （2）将富含吸收剂流的一部分和含有多硫化铵和NH 4 HS的第三再循环水流与第一空气流催化反应以产生含有多硫化铵的流出物流; （3）在有效产生液态硫和基本上无硫化物的含有NH 4 OH和少量（NH 4）2 S 2 O 3的水流的氧化条件下，使得到的含多硫化物的液态物流与第二空气流催化反应; （4）从该最后一个水流的至少一部分汽提NH 3，以产生大气不含铵和硫化物的水流; （5）将作为第一再循环水流的一部分的步骤（3）中形成的一部分水流和作为第二再循环水甾烷的步骤（4）中形成的水流的一部分分别再循环到洗涤步骤; 和（6）使步骤（4）中形成的水流的另一部分与富硫吸收剂流的另一部分在硫代硫酸盐还原条件下反应以形成第三再循环水流的至少一部分并通过步骤（2）。

4. 发明授权

US3728441A Removal and recovery of sulfur from a gas stream containing hydrogen sulfide 失效
标题翻译：从含有硫化氢的气体流中除去和回收硫
公开(公告)号：US3728441A
公开(公告)日：1973-04-17
申请号：US3728441D
申请日：1971-07-19
申请人： UNIVERSAL OIL PROD CO
发明人： HAMBLIN R
IPC分类号： C01B17/05 , C01B17/04
CPC分类号： C01B17/05
摘要： H2S is removed from a gas stream and sulfur is produced by the steps of: (1) sequentially scrubbing the gas stream with a first recycle water stream containing NH4OH and then with a second recycle water stream which is sbustantially free of NH4OH to produce a treated gas stream which is reduced in H2S content and is substantially free of NH3 and a bottom water stream containing NH4HS; (2) catalytically treating the bottom water stream with an air stream to produce an effluent stream containing ammonium polysulfide; (3) treating the ammonium polysulfide-containing stream to recover sulfur and to produce a water stream which is substantially free of NH4OH and a water stream containing NH4OH; and, (4) separately recycling at least a portion of these last two streams to the scrubbing step.
摘要翻译：从气流中除去H 2 S，并通过以下步骤产生硫：（1）用含有NH 4 OH的第一再循环水流，然后用第二再循环水流顺次地洗涤气流，所述第二循环水流是非常不含NH 4 OH以产生处理过的气流中H2S含量降低且基本上不含NH 3和含有NH 4 HS的底部水流; （2）用空气流催化处理底部水流以产生含有多硫化铵的流出物流; （3）处理含多硫化铵的料流以回收硫并产生基本上不含NH 4 OH的水流和含有NH 4 OH的水流; 和（4）将这两个最后两个流的至少一部分分别回收到洗涤步骤。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式