Method for regenerating adsorbent media used for extracting natural gas liquids from natural gas
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10L-003/10
B01J-020/26
B01D-053/04
B01D-053/047
B01J-020/30
B01J-020/20
B01J-020/28
B01J-020/34
출원번호
US-0107678
(2014-08-05)
등록번호
US-9944872
(2018-04-17)
국제출원번호
PCT/US2014/049777
(2014-08-05)
국제공개번호
WO2015/130338
(2015-09-03)
발명자
/ 주소
Matteucci, Scott T.
Goltz, H. Robert
Badhwar, Ajay N.
Shurgott, Nicholas J.
출원인 / 주소
Dow Global Technologies LLC
인용정보
피인용 횟수 :
2인용 특허 :
4
초록▼
A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for the use of a regenerable adsorbent media comprising a p
A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for the use of a regenerable adsorbent media comprising a porous cross-linked polymeric adsorbent, a pyrolized macroporous polymer, or mixtures thereof, which is regenerated by a pressure swing adsorption (PSA) process, temperature swing adsorption (TSA) process, or combination of the two. Said regeneration step may be operated as a batch process, a semi-continuous process, or preferably as a continuous process.
대표청구항▼
1. A process for separating natural gas liquids from a natural gas feedstream comprising methane and one or more of ethane, propane, butane, pentane, or heavier hydrocarbons, comprising the steps of: (a) providing an adsorbent bed comprising an adsorbent media comprising a porous cross-linked polyme
1. A process for separating natural gas liquids from a natural gas feedstream comprising methane and one or more of ethane, propane, butane, pentane, or heavier hydrocarbons, comprising the steps of: (a) providing an adsorbent bed comprising an adsorbent media comprising a porous cross-linked polymeric adsorbent which is a polymer of a monovinyl aromatic monomer crosslinked with a polyvinylidene aromatic compound, wherein said adsorbent media adsorbs ethane, propane, butane, pentane, heavier hydrocarbons, and/or mixtures thereof,(b) passing the natural gas feedstream through the adsorbent bed to provide a methane rich natural gas stream and a loaded adsorbent media,(c) recovering, transporting, liquefying, or flaring the methane rich natural gas stream,(d) regenerating the loaded adsorbent media to release the adsorbed ethane, propane, butane, pentane, heavier hydrocarbons, and/or mixtures thereof,(e) recovering, transporting, liquefying, re-injecting, excluding, by-passing, or flaring the ethane, propane, butane, heavier hydrocarbons, and/or pentane individually and/or as mixtures,and(f) reusing the regenerated adsorbent media in step (b), wherein said passing of the natural gas stream through the adsorbent bed is performed in a pressure swing adsorption (PSA) vessel containing said adsorbent media, a temperature swing adsorption (TSA) vessel containing said adsorbent media, or a PSA vessel in combination with a TSA vessel. 2. The process of claim 1 wherein the steps of the process are performed as a continually repeating cycle of steps in a system comprising a plurality of adsorption vessels which each undergo their respective cycle of steps while collectively operated sequentially in parallel with one another. 3. The process of claim 1 wherein the monovinyl aromatic monomer comprises from 92% to 99.25% by weight of said polymer, and said polyvinylidene aromatic compound comprises from 0.75% to 8% by weight of said polymer. 4. The process of claim 1 wherein the cross-linked macroporous polymeric adsorbent is a polymer of a member selected from the group consisting of styrene, vinylbenzene, vinyltoluene, ethylstyrene, and t-butylstyrene; and is crosslinked with a member selected from the group consisting of divinylbenzene, trivinylbenzene, and ethylene glycol dimethacrylate. 5. The process of claim 4 wherein the cross-linked macroporous polymeric adsorbent has a total porosity of from 0.5 to 1.5 cc/g, a surface area of from 150 to 2100 m2/g as measured by nitrogen adsorption, and an average pore diameter of from 10 Angstroms to 100 Angstroms.
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이 특허에 인용된 특허 (4)
Neely James W. (Levittown PA), Partially pyrolyzed macroporous polymer particles having multimodal pore distribution with macropores ranging from 50-10.
Kuznicki, Steven Mitchell; Avila, Adolfo Maria; Shi, Meng; Strom, Vernon Lindsay; Herrera, Patricio S., Removal of ethane from natural gas at high pressure.
Kelley, Bruce T.; Northrop, Paul S.; Chance, Ronald R.; Deckman, Harry W.; Corcoran, Jr., Edward W.; Thomas, Eugene R., Removal of heavy hydrocarbons from gas mixtures containing heavy hydrocarbons and methane.
Matteucci, Scott T.; Goltz, H. Robert; Badhwar, Ajay N., Method for extracting natural gas liquids from natural gas using an adsorbent media comprising a cross-linked macroporous polymer.
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