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公开(公告)号：US11529582B2
公开(公告)日：2022-12-20
申请号：US16880324
申请日：2020-05-21
摘要： The present invention relates to a method for modifying the crystalline inorganic framework of an adsorbent with coatings to provide rate selectivity for one gas over others is described. The method described herein narrows the effective pore size of crystalline porous solids with pores less than about 5 Å for rate selective separations. This method of the invention comprises treating the hydrated or partially hydrated zeolite with a silicone derived binding agent followed by subsequent heat treatment. The additive content and treatment are adjusted to match effective pore size to specific separations. The superior adsorbent has the added convenience of bead forming simultaneously with pore modification as well as having the treatment result in the yielding of high crush strength products.
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公开(公告)号：US20200276534A1
公开(公告)日：2020-09-03
申请号：US16880324
申请日：2020-05-21
摘要： The present invention relates to a method for modifying the crystalline inorganic framework of an adsorbent with coatings to provide rate selectivity for one gas over others is described. The method described herein narrows the effective pore size of crystalline porous solids with pores less than about 5 Å for rate selective separations. This method of the invention comprises treating the hydrated or partially hydrated zeolite with a silicone derived binding agent followed by subsequent heat treatment. The additive content and treatment are adjusted to match effective pore size to specific separations. The superior adsorbent has the added convenience of bead forming simultaneously with pore modification as well as having the treatment result in the yielding of high crush strength products.
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公开(公告)号：US20170198968A1
公开(公告)日：2017-07-13
申请号：US15468234
申请日：2017-03-24
CPC分类号： F25J3/04733 , B01D53/04 , B01D2253/108 , B01D2256/18 , B01D2257/104 , C01B23/0052 , C01B23/0057 , C01B2210/0014 , C01B2210/0034 , C01B2210/0045 , F25J3/0409 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J2205/02 , F25J2205/60 , F25J2205/66 , F25J2215/58 , F25J2220/04 , F25J2245/42
摘要： A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.
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公开(公告)号：US09644890B2
公开(公告)日：2017-05-09
申请号：US14192003
申请日：2014-02-27
CPC分类号： F25J3/04733 , B01D53/04 , B01D2253/108 , B01D2256/18 , B01D2257/104 , C01B23/0052 , C01B23/0057 , C01B2210/0014 , C01B2210/0034 , C01B2210/0045 , F25J3/0409 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J2205/02 , F25J2205/60 , F25J2205/66 , F25J2215/58 , F25J2220/04 , F25J2245/42
摘要： A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.
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公开(公告)号：US09222727B2
公开(公告)日：2015-12-29
申请号：US13782636
申请日：2013-03-01
CPC分类号： F25J3/08 , C01B23/0052 , C01B23/0068 , C01B23/0078 , C01B2210/0021 , C01B2210/0034 , C01B2210/0045 , F25J3/04733 , F25J2205/60 , F25J2220/44
摘要： The invention relates to a process for removing oxygen from liquid argon using a TSA (temperature swing adsorption) cyclical process that includes cooling an adsorbent bed to sustain argon in a liquid phase; supplying the adsorbent bed with a liquid argon feed that is contaminated with oxygen and purifying the liquid argon thereby producing an argon product with less oxygen contaminant than is in the initial liquid argon feed; draining the purified residual liquid argon product and sending purified argon out of the adsorbent bed. Regeneration of specially prepared adsorbent allows the adsorbent bed to warm up to temperatures that preclude the use of requiring either vacuum or evacuation of adsorbent from the bed.
摘要翻译： 本发明涉及使用TSA（变温吸附）循环过程从液氩中除去氧气的方法，其包括冷却吸附床以维持液相氩; 向吸附床提供被氧气污染的液态氩气进料并净化液态氩气，从而产生比初始液态氩气进料中氧气污染物少的氩气产物; 排出纯化的残余液氩产品并将纯化的氩气送出吸附剂床。 特别制备的吸附剂的再生允许吸附剂床温热到不需要真空或从床抽真空吸附剂的温度。
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公开(公告)号：US20140249023A1
公开(公告)日：2014-09-04
申请号：US13782682
申请日：2013-03-01
IPC分类号： B01J20/18
CPC分类号： B01J20/186 , C01B23/0068 , C01B23/0078 , C01B2210/0034 , C01B2210/0045
摘要： An optimal material composition that allows for the purification of at least one feed component from a fluid feed stream such that the adsorbent has an oxygen capacity of at least 10 weight percent is described. More specifically, the material is an adsorbent for purification of a fluid feed stream having an oxygen to argon selectivity greater than or equal to a ratio of 3:1 and an oxygen capacity of greater than or equal to 10 weight percent, wherein the oxygen capacity is measured at a pressure in the range of about 9-10 Torr and a temperature of 77 degrees Kelvin after 4 hours of equilibration time and wherein the oxygen to argon selectivity is obtained by dividing the oxygen capacity by the argon capacity of the adsorbent measured at a pressure in the range of about 697-700 Torr and a temperature of 87 degrees Kelvin after 8 hours of equilibration time. The adsorption capacities are measured on a pure component basis.
摘要翻译： 描述允许从流体进料流纯化至少一种进料组分的最佳材料组合物，使得吸附剂具有至少10重量％的氧容量。 更具体地，该材料是用于纯化具有大于或等于3:1的比例和大于或等于10重量百分比的氧容量的氧至氩选择性的流体进料流的吸附剂，其中氧容量 在约9-10托的压力和平均时间4小时之后77度开尔文的温度下测量，其中氧至氩的选择性是通过将氧容量除以吸附剂的氩容量， 在约697-700托的范围内的压力和平均8小时后的87开氏温度。 在纯组分的基础上测量吸附能力。
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公开(公告)号：US08221718B2
公开(公告)日：2012-07-17
申请号：US12636146
申请日：2009-12-11
IPC分类号： B01J29/06
CPC分类号： B01D53/72 , B01D53/04 , B01D53/62 , B01D2253/108 , B01D2253/1085 , B01D2253/1122 , B01D2257/108 , B01D2257/502 , B01D2257/7022 , B01D2259/402 , B01J20/186 , Y02C10/04 , Y02C10/08
摘要： The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al≦10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through π-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form π-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.
摘要翻译： 本发明一般涉及二氧化硅/氧化铝比小于或等于10（Si / Al和NlE; 10）的沸石，其与Ag +交换并以这样的方式进行热处理，以有利于通过替代的催化和化学反应性官能团吸附。 本发明的吸附剂和这种吸附剂的制备方法通过络合作用使工作吸附能力最大化。 对这些吸附剂的应用包括其中来自气流的污染物可以与沸石中的Ag形成＆复合物的任何方法，特别是从空气中的CO，乙烯，丙烯等从预净化器吸附器中的空气和CO / H 2中去除 生产超高纯度（UHP）N2。
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8.发明授权公开(公告)号：US11471820B2
公开(公告)日：2022-10-18
申请号：US17034831
申请日：2020-09-28
IPC分类号： B01D53/047 , B01J20/18 , C07C7/12 , C10L3/10 , B01D53/04
摘要： The present invention generally relates to a pressure swing adsorption process for separating an adsorbate impurity from a feed stream comprising product gas, said process comprising feeding the feed stream to an adsorbent bed at a pressure of from about 60 psig to 2000 psig, wherein said adsorbent bed comprises adsorbent having: An isosteric heat of adsorption of from about 5 kJ/mol to about 30 kJ/mol, as determined by the LRC method, for the adsorbate, and an equivalent 65 kJ/mol or less isosteric heat of adsorption for the product, wherein the adsorbent has a rate of adsorption for the adsorbate impurity that is at least 10 times greater than the rate of adsorption for the product gas as determined by the TGA method and recovering said product gas with a reduced a level of said adsorbate impurity. The invention also related to an adsorbent useful in PSA separations, particularly separating N2 from methane, CO2 from methane O2 from N2 and the like.
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公开(公告)号：US20180229175A1
公开(公告)日：2018-08-16
申请号：US15431164
申请日：2017-02-13
摘要： The present invention relates to a method for modifying the crystalline inorganic framework of an adsorbent with coatings to provide rate selectivity for one gas over others is described. The method described herein narrows the effective pore size of crystalline porous solids with pores less than about 5A for rate selective separations. This method of the invention comprises treating the hydrated or partially hydrated zeolite with a silicone derived binding agent followed by subsequent heat treatment. The additive content and treatment are adjusted to match effective pore size to specific separations. The superior adsorbent has the added convenience of bead forming simultaneously with pore modification as well as having the treatment result in the yielding of high crush strength products.
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公开(公告)号：US09759482B2
公开(公告)日：2017-09-12
申请号：US15468234
申请日：2017-03-24
CPC分类号： F25J3/04733 , B01D53/04 , B01D2253/108 , B01D2256/18 , B01D2257/104 , C01B23/0052 , C01B23/0057 , C01B2210/0014 , C01B2210/0034 , C01B2210/0045 , F25J3/0409 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J2205/02 , F25J2205/60 , F25J2205/66 , F25J2215/58 , F25J2220/04 , F25J2245/42
摘要： A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.
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