公开(公告)号：US20180200662A1

公开(公告)日：2018-07-19

申请号：US15408533

申请日：2017-01-18

Applicant: Chevron U.S.A. Inc.

Inventor： Joshua Allen Thompson ,  Tracy Margaret Davis ,  Dan Xie ,  Stacey Ian Zones

IPC: B01D53/047 ,  B01D53/04

CPC classification number: B01D53/047 ,  B01D53/0423 ,  B01D2253/1085 ,  B01D2256/24 ,  B01D2256/245 ,  B01D2257/304 ,  B01D2257/308 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2259/40028 ,  B01D2259/40041 ,  B01D2259/40045 ,  B01D2259/40052 ,  B01D2259/40069 ,  B01D2259/402 ,  B01D2259/404 ,  B01D2259/414

Abstract: We provide a method for removing contaminants from a gas, comprising: alternating input of the gas between two or more beds of adsorbent particles that comprise zeolite SSZ-36, zeolite SSZ-39, or zeolite SSZ-45; wherein the gas contacts one of the beds during an adsorption and a tail gas is simultaneously vented from another of the beds by desorption; wherein a contacting pressure is from about 345 kPa to about 6895 kPa and produces a product gas containing no greater than about 2 mol % carbon dioxide, at least about 10 wppm water, at least about 65 mol % of methane recovered from the feed gas, and at least about 25 mol % of ethane recovered from the feed gas; and wherein the tail gas is vented from the feed end of the beds. We also provide a method for removing a contaminant from a gas, wherein the gas contains hydrogen sulfide.

公开(公告)号：US10041014B2

公开(公告)日：2018-08-07

申请号：US15618730

申请日：2017-06-09

Applicant: Chevron U.S.A. Inc.

Inventor： Joshua Allen Thompson ,  Daniel Chinn ,  Evan Shigeto Hatakeyama ,  Ryan Oliver Owen

IPC: C10L3/06 ,  C10L3/10 ,  B01D53/14 ,  B01D53/64 ,  B01D53/78 ,  B01J20/02 ,  B01J20/08 ,  B01J20/10 ,  B01J20/12 ,  B01J20/18 ,  B01J20/20 ,  B01D53/26 ,  B01D53/77 ,  B01D53/96

Abstract: A process for removal of mercury in a gas dehydration system comprising (a) adding a complexing agent to a recirculated glycol solvent as part of the glycol solution feed prior to or at the dehydration liquid contactor and recirculating continuously with the glycol solvent, (b) selectively reacting the complexing agent with mercury in the wet natural gas to remove the mercury from the dry natural gas product, (c) and feeding the rich glycol with the complexing agent to a regenerator and continuously regenerating.

公开(公告)号：US20170355920A1

公开(公告)日：2017-12-14

申请号：US15618730

申请日：2017-06-09

Applicant: Chevron U.S.A. Inc.

Inventor： Joshua Allen Thompson ,  Daniel Chinn ,  Evan Shigeto Hatakeyama ,  Ryan Oliver Owen

IPC: C10L3/10 ,  B01J20/18 ,  B01J20/10 ,  B01D53/14 ,  B01J20/12 ,  B01J20/20 ,  B01D53/64 ,  B01J20/08 ,  B01D53/78 ,  B01J20/02

CPC classification number: C10L3/101 ,  B01D53/1425 ,  B01D53/1493 ,  B01D53/263 ,  B01D53/64 ,  B01D53/77 ,  B01D53/78 ,  B01D53/96 ,  B01D2251/206 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/404 ,  B01D2251/60 ,  B01D2251/80 ,  B01D2252/2023 ,  B01D2252/2025 ,  B01D2252/606 ,  B01D2252/608 ,  B01D2256/245 ,  B01D2257/602 ,  B01J20/0237 ,  B01J20/0285 ,  B01J20/08 ,  B01J20/103 ,  B01J20/12 ,  B01J20/18 ,  B01J20/20 ,  C10L3/106 ,  C10L2230/02 ,  C10L2290/542

Abstract: A process for removal of mercury in a gas dehydration system comprising (a) adding a complexing agent to a recirculated glycol solvent as part of the glycol solution feed prior to or at the dehydration liquid contactor and recirculating continuously with the glycol solvent, (b) selectively reacting the complexing agent with mercury in the wet natural gas to remove the mercury from the dry natural gas product, (c) and feeding the rich glycol with the complexing agent to a regenerator and continuously regenerating.

公开(公告)号：US20170072359A1

公开(公告)日：2017-03-16

申请号：US14849657

申请日：2015-09-10

Applicant: Chevron U.S.A. Inc.

Inventor： Joshua Allen Thompson

IPC: B01D53/047 ,  B01J20/18

CPC classification number: B01D53/0476 ,  B01D53/0423 ,  B01D53/047 ,  B01D2253/108 ,  B01D2253/1085 ,  B01D2256/24 ,  B01D2256/245 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2259/40018 ,  B01D2259/4003 ,  B01D2259/40037 ,  B01D2259/40041 ,  B01D2259/40043 ,  B01D2259/40049 ,  B01D2259/40052 ,  B01D2259/40075 ,  B01D2259/404 ,  B01D2259/41 ,  B01J20/18 ,  C10L3/102 ,  C10L3/104 ,  C10L2290/542 ,  Y02C10/08

Abstract: Disclosed are methods for removing acid gas from a feed stream of natural gas including acid gas, methane and ethane. The methods include alternating input of the feed stream between at least two beds of adsorbent particles comprising zeolite SSZ-13 such that the feed stream contacts one of the at least two beds at a given time in an adsorption step and a tail gas stream is simultaneously vented from another of the at least two beds in a desorption step. The contact occurs at a feed pressure of from about 50 to about 1000 psia for a sufficient period of time to preferentially adsorb acid gas from the feed stream. A product gas stream is produced containing no greater than about 2 mol % carbon dioxide and at least about 65 mol % of methane recovered from the feed stream and at least about 25 mol % of ethane recovered from the feed stream. The feed stream is input at a feed end of each bed. The product gas stream is removed from a product end of each bed. The tail gas stream is vented from the feed end of each bed. The methods require lower vacuum power consumption and allow improved hydrocarbon recoveries compared with known methods.

Abstract translation: 公开了从包括酸性气体，甲烷和乙烷在内的天然气进料流中除去酸性气体的方法。 所述方法包括在包含沸石SSZ-13的吸附剂颗粒的至少两个床之间交替输入进料流，使得进料流在吸附步骤中在给定时间接触至少两个床中的一个床，并且尾气流同时 在解吸步骤中从至少两个床中的另一个床排出。 接触在约50至约1000psia的进料压力下进行足够的时间以优先从进料流中吸附酸性气体。 产生产物气流，其含有不大于约2摩尔％的二氧化碳和至少约65摩尔％的从进料流中回收的甲烷和至少约25摩尔％的从进料流中回收的乙烷。 进料流在每个床的进料端输入。 从每个床的产品端去除产物气流。 尾气流从每个床的进料端排出。 与已知方法相比，该方法需要更低的真空功率消耗并且允许改进的碳氢化合物回收率。