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公开(公告)号：US06508863B1
公开(公告)日：2003-01-21
申请号：US09975720
申请日：2001-10-11
IPC分类号： B01D5304
CPC分类号： B01D53/0462 , B01D53/02 , B01D53/52 , B01D2253/108 , B01D2253/1085 , B01D2253/25 , B01D2253/308 , B01D2256/245 , B01D2257/702 , B01D2257/7022 , B01D2257/7027 , B01D2259/40056 , B01D2259/40064 , B01D2259/4009 , B01D2259/402 , B01D2259/403 , Y10S95/902
摘要： A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent that selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an acid gas removal solution to remove acid gases which have been coadsorbed with the hydrocarbons. The process is particularly useful in removing hydrocarbons from a hydrogen sulfide-containing stream that is being directed to Claus processing for conversion into elemental sulfur. Useful adsorbents include Y-type zeolites having a silica to alumina mole ratio of less than 15 and a reduced sodium content.
摘要翻译： 从酸性气体流中吸附碳氢化合物的方法包括使酸性气体流通过吸附剂，该吸附剂选择性地除去烃，从吸附剂中解吸烃，并使解吸的烃与酸性气体去除溶液接触，以除去已经被共吸附的酸性气体 烃类。 该方法特别可用于从涉及克劳斯处理转化为元素硫的含硫化氢的物流中除去烃。 有用的吸附剂包括二氧化硅与氧化铝的摩尔比小于15的Y型沸石和钠含量降低。
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2.发明授权公开(公告)号：US06444012B1
公开(公告)日：2002-09-03
申请号：US09699664
申请日：2000-10-30
IPC分类号： B01D53047
CPC分类号： C07C7/13 , B01D53/02 , B01D53/047 , B01D2253/106 , B01D2253/108 , B01D2253/1085 , B01D2253/25 , B01D2253/308 , B01D2257/102 , B01D2257/702 , B01D2257/7025 , B01D2259/40001 , B01D2259/40052 , B01D2259/40056 , B01D2259/40081 , B01D2259/4009 , B01D2259/403 , C10L3/10 , Y02C20/20 , Y02P20/156 , Y10S95/901 , Y10S95/902 , C07C9/04
摘要： A pressure swing adsorption process for the separation of nitrogen from natural gas utilizes two separate pressure swing adsorption stages, the first containing a hydrocarbon-selective adsorbent and the second containing a nitrogen-selective adsorbent. In the process, the product stream from the first pressure swing adsorption unit contains a natural gas stream having a reduced hydrocarbon content and the product stream from the second pressure swing adsorption unit is a natural gas stream having a reduced nitrogen concentration. The product from the second pressure swing adsorption unit is used to desorb the hydrocarbons from the first pressure swing adsorption unit so as to add the hydrocarbons, which have heat value to the product natural gas stream. Periodically, heating the nitrogen-selective adsorbent with heated product stream from the second pressure swing adsorption unit has been found to improve the capacity of the nitrogen-selective adsorbent to adsorb nitrogen.
摘要翻译： 用于从天然气中分离氮气的变压吸附方法利用两个单独的变压吸附阶段，第一个包含烃选择性吸附剂，第二个含有选择性吸附剂。 在该过程中，来自第一变压吸附单元的产物流包含具有降低的烃含量的天然气流，并且来自第二变压吸附单元的产物流是具有降低的氮浓度的天然气流。 来自第二变压吸附单元的产物用于从第一变压吸附单元解吸烃，以便向产物天然气流中加入具有热值的烃。 周期性地，已经发现用来自第二变压吸附单元的加热产物流加热氮选择性吸附剂可以提高氮选择性吸附剂吸附氮的能力。
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公开(公告)号：US06497750B2
公开(公告)日：2002-12-24
申请号：US09793039
申请日：2001-02-26
IPC分类号： B01D53047
CPC分类号： B01D53/04 , B01D53/02 , B01D53/047 , B01D2253/308 , B01D2256/10 , B01D2256/24 , B01D2257/7022 , B01D2259/41 , C10L3/10 , Y10S95/901 , Y10S95/902
摘要： A pressure swing adsorption process for the separation of nitrogen from a mixture of same with methane, utilizing two separate PSA stages, one containing a nitrogen selective adsorbent and the second containing a methane-selective adsorbent. In the process, the first PSA unit containing a nitrogen selective adsorbent forms a product methane stream and a waste stream rich in nitrogen which is passed to a second PSA unit containing a methane selective adsorbent which forms a product nitrogen stream and a waste stream rich in methane. The waste stream rich in methane can be treated to remove heavy hydrocarbons therefrom before the methane is recycled to feed.
摘要翻译： 利用两个分离的PSA级，一个含有氮选择性吸附剂，另一个含有甲烷选择性吸附剂，用于从其与甲烷的混合物中分离氮的变压吸附方法。 在该方法中，含有氮选择性吸附剂的第一PSA单元形成产物甲烷流和富含氮气的废物流，该废物流被传递到含有形成产物氮气流的甲烷选择性吸附剂的第二PSA单元和富含 甲烷。 在甲烷再循环到进料之前，可以处理富含甲烷的废物流以除去其中的重质烃。
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4.发明授权公开(公告)号：US06315817B1
公开(公告)日：2001-11-13
申请号：US09698261
申请日：2000-10-30
IPC分类号： B01D53047
CPC分类号： B01D53/047 , B01D53/02 , B01D2253/102 , B01D2253/104 , B01D2253/106 , B01D2253/108 , B01D2253/308 , B01D2256/10 , B01D2256/24 , B01D2258/06 , B01D2259/40052 , Y02C20/20 , Y10S95/902
摘要： A pressure swing adsorption process for the separation of hydrogen from a mixture of the same with methane, utilizing two separate PSA stages, one containing a nitrogen selective crystalline zeolite, and the second containing a methane selective adsorbent.
摘要翻译： 利用两个分开的PSA级，一个含氮选择性结晶沸石，另一个含甲烷选择性吸附剂，用于从甲烷混合物中分离氢气的变压吸附方法。
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公开(公告)号：US06387159B1
公开(公告)日：2002-05-14
申请号：US09602945
申请日：2000-06-26
IPC分类号： B01D5304
CPC分类号： B01D53/8615 , B01D53/04 , B01D53/0462 , B01D53/047 , B01D2253/106 , B01D2253/108 , B01D2253/1085 , B01D2256/24 , B01D2259/40086 , B01D2259/402 , B01D2259/403 , Y10S95/902
摘要： A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent which selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an acid gas removal solution to remove acid gases which have been coadsorbed with the hydrocarbons. The process is particularly useful in removing hydrocarbons from a hydrogen sulfide-containing stream which is being directed to Claus processing for conversion into elemental sulfur. Useful adsorbents include crystalline titanium silicate molecular sieves containing titania octahedral sites such as ETS-10 and similar materials, as well as high silica aluminosilicate zeolite.
摘要翻译： 从酸性气流中吸附碳氢化合物的方法包括使酸性气体流通过吸附剂，该吸附剂选择性地除去碳氢化合物，从吸附剂中解吸烃，并使解吸的烃与酸性气体去除溶液接触，以除去已经被共吸附的酸性气体 烃类。 该方法特别可用于从涉及克劳斯处理转化为元素硫的含硫化氢的物流中除去烃。 有用的吸附剂包括含有二氧化钛八面体位点如ETS-10和类似材料的结晶硅酸钛分子筛，以及高硅铝硅酸盐沸石。
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公开(公告)号：US06521020B2
公开(公告)日：2003-02-18
申请号：US10096908
申请日：2002-03-14
IPC分类号： B01D5304
CPC分类号： B01D53/8615 , B01D53/04 , B01D53/0462 , B01D53/047 , B01D2253/106 , B01D2253/108 , B01D2253/1085 , B01D2256/24 , B01D2259/40086 , B01D2259/402 , B01D2259/403 , Y10S95/902
摘要： A process for adsorbing hydrocarbons from an acid gas stream includes passing the acid gas stream through an adsorbent which selectively removes hydrocarbons, desorbing the hydrocarbons from the adsorbent and contacting the desorbed hydrocarbons with an acid gas removal solution to remove acid gases which have been coadsorbed with the hydrocarbons. The process is particularly useful in removing hydrocarbons from a hydrogen sulfide-containing stream which is being directed to Claus processing for conversion into elemental sulfur. Useful adsorbents include crystalline titanium silicate molecular sieves containing titania octahedral sites such as ETS-10 and similar materials, as well as high silica aluminosilicate zeolite.
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公开(公告)号：US06197092B1
公开(公告)日：2001-03-06
申请号：US09273684
申请日：1999-03-22
IPC分类号： B01D53047
CPC分类号： B01D53/047 , B01D53/02 , B01D2253/102 , B01D2253/104 , B01D2253/106 , B01D2253/108 , B01D2253/308 , B01D2256/10 , B01D2256/24 , B01D2258/06 , B01D2259/40052 , Y02C20/20 , Y10S95/902
摘要： A pressure swing adsorption process for the separation of hydrogen from a mixture of the same with methane, utilizing two separate PSA stages, one containing a nitrogen selective crystalline zeolite, and the second containing a methane selective adsorbent.
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公开(公告)号：US4705673A
公开(公告)日：1987-11-10
申请号：US854506
申请日：1986-04-22
CPC分类号： C10K1/16 , B01D53/1493 , Y02C10/06
摘要： This invention discloses mixtures of alkyl dialcohol amines and mono alkyl ethers of polyethylene glycols which are useful in removing acidic gases from gaseous mixtures. The solvent mixtures contain between 1.5 N and 5.0 N methyl diethanolamine (MDEA), 10 to 40 percent water and the balance is methoxytriglycol (MTG). The overall heat of reaction of the solution is typically less than 500 BTU/lb CO.sub.2, and remains as a single liquid phase during normal gas scrubber operating conditions.
摘要翻译： 本发明公开了可用于从气态混合物中除去酸性气体的烷基二醇胺和聚乙二醇单烷基醚的混合物。 溶剂混合物含有1.5N和5.0N甲基二乙醇胺（MDEA），10-40％水，余量为甲氧基三乙醇胺（MTG）。 溶液的总体反应热通常小于500BTU / lbCO 2，并且在正常气体洗涤器操作条件期间保持为单一液相。
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公开(公告)号：US4184855A
公开(公告)日：1980-01-22
申请号：US865732
申请日：1977-12-29
CPC分类号： B01D53/1493 , B01D53/1462 , Y02C10/06
摘要： A continuous process for acid gas removal from process gas streams by contact with an aqueous alkanolamine solution such as MEA wherein the temperature of the MEA solution is controlled by placing an intercooler at the lower end of the absorption column such that the temperature of the down-coming MEA solution is cooled to allow increased mole loading of acid gas in the solution, but is not so cooled that the mass transfer rate of the acid gas from the process gas to the MEA solution is slowed to an unacceptable level. The lower temperature highly loaded MEA solution is then passed to a heat exchanger-flash-heat exchanger arrangement where the temperature is increased to provide satisfactory flash efficiency and then heated again prior to introduction into the stripper to reduce the sensible heat duty in the stripper. The combination of optimally positioned intercooler and flash together with the temperature ranges recited permit the obtainment of a net energy demand lower than can be expected from the addition of the intercooler effect and the flash effect.
摘要翻译： 通过与诸如MEA的链烷醇胺水溶液接触来从工艺气流中除去酸性气体的连续方法，其中通过将中间冷却器放置在吸收塔的下端来控制MEA溶液的温度， 冷却MEA溶液以允许溶液中酸性气体的摩尔负载增加，但不会如此冷却，使得酸性气体从处理气体到MEA溶液的传质速率减慢到不可接受的水平。 然后将较低温度的高负载MEA溶液传递到热交换器 - 闪蒸热交换器装置，其中温度升高以提供令人满意的闪蒸效率，然后在引入汽提器之前再次加热以降低汽提器中的显热负荷。 优化的中间冷却器和闪光灯与所叙述的温度范围的组合允许获得比从中间冷却器效应和闪光效果的增加可以预期的更低的净能量需求。
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10.发明授权
公开(公告)号：US4401560A
公开(公告)日：1983-08-30
申请号：US394301
申请日：1982-07-01
CPC分类号： C10G21/00
摘要： An improvement to a continuous solvent extraction-steam distillation process for the recovery of aromatic hydrocarbons in the range of C.sub.6 -C.sub.16 from a feed stream containing such aromatics and aliphatic hydrocarbons in the range of C.sub.5 -C.sub.16 which resides in utilizing two heat exchangers wherein the heat of condensation of the overhead stripper vapor and vapor sidedraw products is recovered and utilized to vaporize the stripping water, thereby producing stripping steam which in turn is compressed up to the pressure present at the bottom of the stripper and resulting in the reduction of the heat load of the process.
摘要翻译： 连续溶剂萃取 - 蒸汽蒸馏方法的改进，用于从含有C 5 -C 16范围内的芳烃和脂族烃的进料流中回收C 6 -C 16范围内的芳族烃，该方法使用两种热交换器，其中 回收塔顶汽提塔蒸气和蒸汽侧面产品的冷凝热并蒸发汽提水，从而产生汽提蒸汽，汽提蒸汽又被压缩至汽提塔底部存在的压力并导致热量降低 加载过程。
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