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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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3.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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5.发明申请公开(公告)号：US20210008487A1
公开(公告)日：2021-01-14
申请号：US17034831
申请日：2020-09-28
IPC分类号： B01D53/047 , B01J20/18 , C10L3/10 , C07C7/12
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：US10717035B2
公开(公告)日：2020-07-21
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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7.发明申请公开(公告)号：US20210016218A1
公开(公告)日：2021-01-21
申请号：US17034748
申请日：2020-09-28
IPC分类号： B01D53/047 , B01J20/18
摘要： The present invention generally relates to a process that utilizes tunable zeolite adsorbents in order to reduce the bed size for nitrogen removal from a methane (or a larger molecule) containing stream. The adsorbents are characterized by the rate of adsorption of nitrogen and methane and the result is a bed size that is up to an order of magnitude smaller with these characteristics (in which the rate selectivity is generally 30) than the corresponding bed size for the original tunable zeolite adsorbent that has a rate selectivity of >100x.
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公开(公告)号：US10295255B2
公开(公告)日：2019-05-21
申请号：US15244359
申请日：2016-08-23
申请人： Philip A. Barrett , Neil A. Stephenson , Nicholas R. Stuckert , Michael Freiert , Hai Du , Rachael A. Masin , Garrett R. Swindlehurst
发明人： Philip A. Barrett , Neil A. Stephenson , Nicholas R. Stuckert , Michael Freiert , Hai Du , Rachael A. Masin , Garrett R. Swindlehurst
摘要： An adsorption process for xenon recovery from a cryogenic liquid or gas stream is described wherein a bed of adsorbent is contacted with the aforementioned xenon containing liquid or gas stream and adsorbs the xenon selectively from this fluid stream. The adsorption bed is operated to at least near full breakthrough with xenon to enable a deep rejection of other stream components, prior to regeneration using the temperature swing method. Operating the adsorption bed to near full breakthrough with xenon, prior to regeneration, enables production of a high purity product from the adsorption bed and further enables oxygen to be used safely as a purge gas, even in cases where hydrocarbons are co-present in the feed stream.
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公开(公告)号：US20180058758A1
公开(公告)日：2018-03-01
申请号：US15244359
申请日：2016-08-23
申请人： Philip A. Barrett , Neil A. Stephenson , Nicholas R. Stuckert , Michael Freiert , Hai Du , Rachael A. Masin , Garrett R. Swindlehurst
发明人： Philip A. Barrett , Neil A. Stephenson , Nicholas R. Stuckert , Michael Freiert , Hai Du , Rachael A. Masin , Garrett R. Swindlehurst
IPC分类号： F25J3/06
CPC分类号： F25J3/0685 , B01D53/0462 , B01D2253/106 , B01D2253/108 , B01D2257/11 , B01D2257/402 , B01D2257/702 , B01D2259/40056 , B01J20/186 , B01J20/3092 , B01J20/3408 , B01J20/3458 , B01J2220/56 , C01B23/0068 , C01B23/0078 , C01B2210/0037 , C01B2210/007 , F25J3/0695 , F25J2205/68 , F25J2205/70 , F25J2215/36 , Y02C20/10 , Y02P20/153
摘要： An adsorption process for xenon recovery from a cryogenic liquid or gas stream is described wherein a bed of adsorbent is contacted with the aforementioned xenon containing liquid or gas stream and adsorbs the xenon selectively from this fluid stream. The adsorption bed is operated to at least near full breakthrough with xenon to enable a deep rejection of other stream components, prior to regeneration using the temperature swing method. Operating the adsorption bed to near full breakthrough with xenon, prior to regeneration, enables production of a high purity product from the adsorption bed and further enables oxygen to be used safely as a purge gas, even in cases where hydrocarbons are co-present in the feed stream.
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公开(公告)号：US20180290098A1
公开(公告)日：2018-10-11
申请号：US15945962
申请日：2018-04-05
IPC分类号： B01D53/047
摘要： The invention relates to a process for modifying the VPSA/VSA/PSA cycle to allow for maximum product pressure without the need for a base load oxygen compressor (BLOC) or base load oxygen blower (BLOB), thus supplying low pressure oxygen (3 to 7 Psig) to the end user while at the same time lowering product costs 10 to 30%. The system of this invention preferably employs larger piping runs from the VPSA to the oxy-fuel control skids, larger piping for the oxy-fuel control skid, larger piping for the VPSA, low pressure drop flow measurements, and low pressure drop check valves.
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