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1. 发明申请

US20110008229A1 SULFUR RECOVERY PLANT TAIL GAS TREATMENT PROCESS 有权
标题翻译： SULFUR RECOVERY植物尾气处理工艺
公开(公告)号：US20110008229A1
公开(公告)日：2011-01-13
申请号：US12825865
申请日：2010-06-29
申请人： Jagannathan N. IYENGAR , David PERRY , Robert B. FEDICH
发明人： Jagannathan N. IYENGAR , David PERRY , Robert B. FEDICH
IPC分类号： B01D53/14 , B01D53/52 , B01D53/48
CPC分类号： B01D53/1406 , B01D53/1468 , B01D53/1481 , B01D53/1493 , B01D53/523 , B01D2252/103 , B01D2252/2025 , B01D2252/20405 , B01D2252/20426 , B01D2252/20484 , B01D2252/502 , B01D2257/302 , B01D2257/304 , B01D2258/00 , C01B17/0456 , C01B17/167 , C01B17/60
摘要： A process for the removal of hydrogen sulfide from a gas stream in which the gas stream is first passed through a Claus unit operating at a sub-stoichiometric ratio (H2S:SO2) of greater than 2:1 to produce a tail gas stream comprising less than 2000 vppm SO2. This tail gas stream is then treated to increase the sulfur recovery to at least 99.5% by first directly cooling the tail gas stream by contact with water as a coolant, followed by contacting the gas stream with a circulating stream of a dilute, absorbent solution of a severely sterically hindered secondary aminoether alcohol to further cool the gas stream, and then removing the H2S from the stream using a stronger absorbent solution of a severely sterically hindered secondary aminoether alcohol.
摘要翻译：一种从气流中除去硫化氢的方法，其中气流首先通过以大于2:1的亚化学计量比（H 2 S:SO 2）操作的克劳斯单元，以产生包含较少的尾气流超过2000 vppm SO2。然后通过首先通过与作为冷却剂的水接触直接冷却尾气流，然后将气流与循环流的稀释吸收剂溶液接触，然后处理该尾气流以将硫回收率提高至至少99.5％严格的空间位阻仲氨基醚醇，以进一步冷却气流，然后使用更强的空间位阻仲氨基醚醇的吸收剂溶液从流中除去H 2 S.

2. 发明授权

US5514351A Desulfurizing tailgas from sulfur recovery unit 失效
标题翻译：硫回收装置脱硫
公开(公告)号：US5514351A
公开(公告)日：1996-05-07
申请号：US186934
申请日：1994-01-27
申请人： John S. Buchanan , Jagannathan N. Iyengar , David L. Stern
发明人： John S. Buchanan , Jagannathan N. Iyengar , David L. Stern
IPC分类号： B01D53/04 , B01D53/48 , B01D53/50 , B01D53/52 , B01D53/86 , C01B17/04
CPC分类号： B01D53/12 , B01D53/04 , B01D53/485 , B01D53/508 , B01D53/52 , B01D53/523 , B01D53/8609 , B01D53/8637 , C01B17/0408 , C01B17/0456 , C01B17/0473 , B01D2253/104 , B01D2257/30 , B01D2257/302 , Y02P20/129
摘要： With sufficient oxygen but with no added fuel gas, recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream with heat exchange from heat generated in a thermal converter section of a sulfur recovery unit to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a solid adsorbent bed to extract the sulfur oxides and retain them as sulfur compounds, thus forming a sulfur oxide depleted gas stream. The adsorbent bed is then contacted with a reducing gas stream to reduce the retained sulfur compounds to hydrogen sulfide and/or sulfur dioxide and thereby form a hydrogen sulfide and/or sulfur dioxide bearing stream. Sulfur is recovered from the hydrogen sulfide and/or sulfur dioxide bearing stream, and the sulfur oxide depleted gas stream maybe sent to an incinerator or vented through a stack.
摘要翻译：用足够的氧气，但没有添加燃料气体，从硫回收装置的热转化器部分产生的热量通过热交换来氧化气流，从含有硫化氢的气流中回收硫，以将气流中的硫化氢转化为硫氧化物，从而形成富含硫氧化物的气流。富含硫氧化物的气流与固体吸附剂床接触以提取硫氧化物并将其保留为硫化合物，从而形成贫硫氧化物气流。然后使吸附剂床与还原气流接触，将留下的硫化合物还原为硫化氢和/或二氧化硫，从而形成含硫化氢和/或二氧化硫的物流。硫从硫化氢和/或含二氧化硫的物流中回收，硫氧化物贫化气体流可以送到焚化炉或通过堆垛排放。

3. 发明授权

US4292286A Process for selective removal of cyclic urea from hindered amine gas treating solution 失效
标题翻译：从受阻胺气体处理溶液中选择性除去环状脲的方法
公开(公告)号：US4292286A
公开(公告)日：1981-09-29
申请号：US102611
申请日：1979-12-11
申请人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar
发明人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar
IPC分类号： B01D53/14 , B01D53/34
CPC分类号： B01D53/1412 , B01D53/1425 , B01D53/1456
摘要： A cyclic urea reaction product forms as a by-product of a hindered amine acid gas scrubbing process and results in an ultimate buildup of the material in the circulating amine scrubbing solution. The buildup of this material has a deleterious effect on acid gas removal rates and accordingly, results in inefficient acid gas removal. In the process of the present invention, the cyclic urea degradation product is removed from the circulating solution by employing a selective precipitation of the cyclic urea followed by filtration. The selective precipitation is carried out by cooling the circulating solution to a particular temperature level such that the cyclic urea comes out of solution while the other components remain in solution.
摘要翻译：环状尿素反应产物形成为受阻胺酸气洗涤工艺的副产物，并导致该循环胺洗涤溶液中物质的最终累积。这种材料的积累对酸性气体去除速率具有有害的影响，因此导致无效的酸性气体去除。在本发明的方法中，通过使用环状尿素的选择性沉淀，然后过滤，从循环溶液中除去环状脲分解产物。通过将循环溶液冷却至特定的温度水平进行选择性沉淀，使得环状脲从溶液中排出，而其它组分保留在溶液中。

4. 发明授权

US08524184B2 Sulfur recovery plant tail gas treatment process 有权
标题翻译：硫回收厂尾气处理工艺
公开(公告)号：US08524184B2
公开(公告)日：2013-09-03
申请号：US12825865
申请日：2010-06-29
申请人： Jagannathan N. Iyengar , David Perry , Robert B. Fedich
发明人： Jagannathan N. Iyengar , David Perry , Robert B. Fedich
IPC分类号： B01D53/50 , B01D53/52
CPC分类号： B01D53/1406 , B01D53/1468 , B01D53/1481 , B01D53/1493 , B01D53/523 , B01D2252/103 , B01D2252/2025 , B01D2252/20405 , B01D2252/20426 , B01D2252/20484 , B01D2252/502 , B01D2257/302 , B01D2257/304 , B01D2258/00 , C01B17/0456 , C01B17/167 , C01B17/60
摘要： A process for the removal of hydrogen sulfide from a gas stream in which the gas stream is first passed through a Claus unit operating at a sub-stoichiometric ratio (H2S:SO2) of greater than 2:1 to produce a tail gas stream comprising less than 2000 vppm SO2. This tail gas stream is then treated to increase the sulfur recovery to at least 99.5% by first directly cooling the tail gas stream by contact with water as a coolant, followed by contacting the gas stream with a circulating stream of a dilute, absorbent solution of a severely sterically hindered secondary aminoether alcohol to further cool the gas stream, and then removing the H2S from the stream using a stronger absorbent solution of a severely sterically hindered secondary aminoether alcohol.
摘要翻译：一种从气流中除去硫化氢的方法，其中气流首先通过以大于2:1的亚化学计量比（H 2 S:SO 2）操作的克劳斯单元，以产生包含较少的尾气流超过2000 vppm SO2。然后通过首先通过与作为冷却剂的水接触直接冷却尾气流，然后将气流与循环流的稀释吸收剂溶液接触，然后处理该尾气流以将硫回收率提高至至少99.5％严格的空间位阻仲氨基醚醇，以进一步冷却气流，然后使用更强的空间位阻仲氨基醚醇的吸收剂溶液从流中除去H 2 S.

5. 发明授权

US07662215B2 Methods for removing sulfur-containing compounds 有权
标题翻译：去除含硫化合物的方法
公开(公告)号：US07662215B2
公开(公告)日：2010-02-16
申请号：US11628826
申请日：2005-06-20
申请人： Christopher W. Sparling , P. Scott Northrop , Johnny E. Johnson , Jagannathan N. Iyengar , Barry M. Friedman
发明人： Christopher W. Sparling , P. Scott Northrop , Johnny E. Johnson , Jagannathan N. Iyengar , Barry M. Friedman
IPC分类号： B01D53/14
CPC分类号： B01D53/1462 , B01D53/501 , B01D53/75 , C01B17/0404 , C01B17/0408 , C01B17/167 , C10L3/10 , C10L3/102 , Y02C10/06 , Y02P20/152
摘要： A method for removing sulfur-containing compounds is provided. In one embodiment, the method includes selectively separating a feed stream (118) comprising carbon dioxide and one or more sulfur-containing compounds, including hydrogen sulfide, at conditions sufficient to produce a first stream (122) comprising carbon dioxide and hydrogen sulfide and a second stream (124) comprising carbon dioxide and hydrogen sulfide. A molar ratio of carbon dioxide to hydrogen sulfide in the first stream is greater than a molar ratio of carbon dioxide to hydrogen sulfide in the second stream, and a molar ratio of hydrogen sulfide in the first stream to hydrogen sulfide in the second stream is about 0.005 or more.
摘要翻译：提供了一种去除含硫化合物的方法。在一个实施方案中，该方法包括在足以产生包含二氧化碳和硫化氢的第一物流（122）的条件下选择性地分离包含二氧化碳和一种或多种含硫化合物（包括硫化氢）的进料流（118）包含二氧化碳和硫化氢的第二物流（124）。第一流中二氧化碳与硫化氢的摩尔比大于第二流中二氧化碳与硫化氢的摩尔比，第二流中第一流中的硫化氢与硫化氢的摩尔比约为 0.005以上。

6. 发明申请

US20080107581A1 Methods for Removing Sulfur-Containing Compounds 有权
标题翻译：去除含硫化合物的方法
公开(公告)号：US20080107581A1
公开(公告)日：2008-05-08
申请号：US11628826
申请日：2005-06-20
申请人： Christopher W. Sparling , P. Scott Northrop , Johnny E. Johnson , Jagannathan N. Iyengar , Barry M. Friedman
发明人： Christopher W. Sparling , P. Scott Northrop , Johnny E. Johnson , Jagannathan N. Iyengar , Barry M. Friedman
IPC分类号： B01D53/48 , B01D53/14
CPC分类号： B01D53/1462 , B01D53/501 , B01D53/75 , C01B17/0404 , C01B17/0408 , C01B17/167 , C10L3/10 , C10L3/102 , Y02C10/06 , Y02P20/152
摘要： A method for removing sulfur-containing compounds is provided. In one embodiment, the method includes selectively separating a feed stream (118) comprising carbon dioxide and one or more sulfur-containing compounds, including hydrogen sulfide, at conditions sufficient to produce a first stream (122) comprising carbon dioxide and hydrogen sulfide and a second stream (124) comprising carbon dioxide and hydrogen sulfide. A molar ratio of carbon dioxide to hydrogen sulfide in the first stream is greater than a molar ratio of carbon dioxide to hydrogen sulfide in the second stream, and a molar ratio of hydrogen sulfide in the first stream to hydrogen sulfide in the second stream is about 0.005 or more.
摘要翻译：提供了一种去除含硫化合物的方法。在一个实施方案中，该方法包括在足以产生包含二氧化碳和硫化氢的第一物流（122）的条件下选择性地分离包含二氧化碳和一种或多种含硫化合物（包括硫化氢）的进料流（118）包含二氧化碳和硫化氢的第二物流（124）。第一流中二氧化碳与硫化氢的摩尔比大于第二流中二氧化碳与硫化氢的摩尔比，第二流中第一流中的硫化氢与硫化氢的摩尔比约为 0.005以上。

7. 发明授权

US4180548A Process for selective removal of cyclic urea from hindered amine gas treating solution 失效
标题翻译：从受阻胺气体处理溶液中选择性除去环状脲的方法
公开(公告)号：US4180548A
公开(公告)日：1979-12-25
申请号：US972500
申请日：1978-12-22
申请人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar
发明人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar
IPC分类号： C07D245/02 , B01D53/14 , B01D53/40 , B01D53/64 , B01D53/77 , C07D233/34 , C07D239/10 , C07D243/04 , B01D53/34
CPC分类号： B01D53/1412 , B01D53/1425 , B01D53/1456
摘要： A cyclic urea reaction product forms as a by-product of a hindered amine acid gas scrubbing process and results in an ultimate buildup of the material in the circulating amine scrubbing solution. The buildup of this material has a deleterious effect on acid gas removal rates and accordingly, results in inefficient acid gas removal. In the process of the present invention, the cyclic urea degradation product is removed from the circulating solution by employing a selective precipitation of the cyclic urea followed by filtration. The selective precipitation is carried out by cooling the circulating solution to a particular temperature level such that the cyclic urea comes out of solution while the other components remain in solution.
摘要翻译：环状尿素反应产物形成为受阻胺酸气洗涤工艺的副产物，并导致该循环胺洗涤溶液中物质的最终累积。这种材料的积累对酸性气体去除速率具有有害的影响，因此导致无效的酸性气体去除。在本发明的方法中，通过使用环状尿素的选择性沉淀，然后过滤，从循环溶液中除去环状脲分解产物。通过将循环溶液冷却至特定的温度水平进行选择性沉淀，使得环状脲从溶液中排出，而其它组分保留在溶液中。

8. 发明授权

US5292492A Recovering sulfur from ammonia acid gas stream 失效
标题翻译：从氨酸气流中回收硫
公开(公告)号：US5292492A
公开(公告)日：1994-03-08
申请号：US877936
申请日：1992-05-04
申请人： J. Scott Buchanan , Jagannathan N. Iyengar
发明人： J. Scott Buchanan , Jagannathan N. Iyengar
IPC分类号： B01D53/50 , B01D53/52 , C01B17/04 , C01B17/16
CPC分类号： C01B17/0491 , B01D53/508 , B01D53/523 , C01B17/0408 , C01B17/0456 , C01B17/0478
摘要： Method and system for recovering sulfur from an ammonia acid gas stream containing hydrogen sulfide comprising the steps of combusting the ammonia acid gas stream with air or oxygen to convert the ammonia and the hydrogen sulfide therein to N.sub.2 and SO.sub.x, respectively, and thus form a nitrogen and sulfur oxide enriched gas stream. The nitrogen and sulfur oxide enriched gas stream is contacted with a solid absorbent bed to extract the sulfur oxides and retain them as sulfur compounds, thus forming a nitrogen bearing stream. The absorbent bed is then contacted with a hydrogen and/or hydrocarbon bearing stream to reduce the retained sulfur compounds to hydrogen sulfide and/or sulfur dioxide and thereby form a hydrogen sulfide and/or sulfur dioxide bearing stream. Sulfur is recovered from the hydrogen sulfide and/or sulfur dioxide bearing stream. The nitrogen bearing stream is sent to an incinerator or vented through a stack.
摘要翻译：从含有硫化氢的氨酸气流中回收硫的方法和系统，包括以下步骤：将氨酸气流与空气或氧气一起燃烧以将氨和硫化氢分别转化为N 2和SO x，从而形成氮和富含硫氧化物的气流。富含氮氧化物和氧化硫的气流与固体吸收剂床接触以提取硫氧化物并将其保留为硫化合物，从而形成含氮气流。然后将吸收剂床与氢气和/或含烃流体接触以将保留的硫化合物还原成硫化氢和/或二氧化硫，从而形成含硫化氢和/或二氧化硫的物流。从硫化氢和/或二氧化硫气流中回收硫。氮气流被送到焚烧炉或通过堆垛排放。

9. 发明授权

US4282194A Process for converting cyclic urea to corresponding diamine in a gas treating system 失效
标题翻译：在气体处理系统中将环脲转化为相应的二胺的方法
公开(公告)号：US4282194A
公开(公告)日：1981-08-04
申请号：US122589
申请日：1980-02-19
申请人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar , Barbara A. Hacker
发明人： Geoffrey R. Say , James R. Hays, Sr. , Jagannathan N. Iyengar , Barbara A. Hacker
IPC分类号： B01D53/14 , B01D53/52 , B01D53/34
CPC分类号： B01D53/1425 , B01D53/1456 , B01D53/1493 , B01D53/526 , Y02C10/06
摘要： Acidic gases such as carbon dioxide are removed from a normally gaseous mixture including the acidic component by contacting the gaseous mixture in an absorption zone with an acid absorbing scrubbing solution comprising a basic alkali metal compound and an activator for the compound, during which process at least a portion of the activator is converted to a cyclic urea. The solution is then transferred to the desorption zone to remove at least a portion of the absorbed acidic component. At least a portion of the partially desorbed scrubbing solution containing the cyclic urea is transferred from the desorption zone to a thermal conversion zone maintained at an elevated temperature wherein at least a portion of the cyclic urea is converted back to the activator. A portion of the scrubbing solution from the thermal conversion zone, relatively rich in the acidic component is vaporized and returned to the desorption zone, and another portion, relatively lean in the acidic component, is returned from the thermal conversion zone to the absorption zone.
摘要翻译：通过使吸收区中的气体混合物与包含碱性碱金属化合物和化合物的活化剂的吸酸洗涤溶液接触，将酸性气体如二氧化碳从包括酸性组分的常规气态混合物中除去，在该过程中至少活化剂的一部分转化为环状脲。然后将溶液转移到解吸区以除去至少一部分吸收的酸性组分。含有环状尿素的部分解吸附的洗涤溶液的至少一部分从解吸区转移到保持在高温下的热转化区，其中至少一部分环脲转化回活化剂。相对富含酸性组分的来自热转化区的洗涤溶液的一部分被蒸发并返回到解吸区，并且酸性组分中相对贫的另一部分从热转化区返回到吸收区。

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