公开(公告)号：US20240278177A1

公开(公告)日：2024-08-22

申请号：US18634033

申请日：2024-04-12

Applicant: Stearns, Conrad and Schmidt, Consulting Engineers, Inc.

Inventor： Jeffrey GRILL

IPC: B01D53/70

CPC classification number: B01D53/70 ,  B01D2257/202 ,  B01D2258/05

Abstract: A method to produce a halogen-depleted biogas is described. The method includes supplying biogas and/or a gas derived from a source of biogas to a halogen removal system to produce a halogen-depleted biogas. Biogas pre-processing, post-processing, and a product production system may be integrated with the halogen removal system to produce a product.

公开(公告)号：US12044470B2

公开(公告)日：2024-07-23

申请号：US18441852

申请日：2024-02-14

Applicant: WM INTELLECTUAL PROPERTY HOLDINGS, L.L.C.

Inventor： Derek Christensen ,  Jon Denault ,  Greg Miles ,  Keith Ott ,  Douglas Lee Palmer, Jr.

IPC: B01D53/047 ,  B01D53/04 ,  B01D53/22 ,  F25J3/02

CPC classification number: F25J3/0209 ,  B01D53/04 ,  B01D53/22 ,  F25J3/0257 ,  F25J3/0266 ,  B01D2256/245 ,  B01D2257/30 ,  B01D2257/504 ,  B01D2258/05 ,  F25J2205/72 ,  F25J2205/80 ,  F25J2210/66 ,  F25J2230/30

Abstract: A system and method for recovering high-quality biomethane (RNG) from biogas sources is provided. The gas stream is compressed and liquids are separated from the gas stream at elevated pressure and reduced temperature. The compressing is performed using a plurality of compressors operating in parallel with common control set points. The system and method improve upon conventional practices and yield a biomethane product which meets strict gas pipeline quality specifications. Additionally, the system and method are an improvement to the overall methane recovery efficiency for biogas processing facilities.

公开(公告)号：US11826719B2

公开(公告)日：2023-11-28

申请号：US16772155

申请日：2020-03-27

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Il Hyun Baek ,  Sung Chan Nam

IPC: B01J20/06 ,  B01J20/08 ,  B01D53/04 ,  B01D53/14 ,  B01D53/52 ,  B01D53/78 ,  B01J20/20 ,  B01J20/26 ,  B01J20/28 ,  C01B3/34 ,  C10K1/00 ,  C10K1/32 ,  C10L3/10 ,  B01D53/02 ,  B01D53/18 ,  B01D53/62 ,  B01J8/02 ,  C10K1/14

CPC classification number: B01J20/08 ,  B01D53/02 ,  B01D53/04 ,  B01D53/1425 ,  B01D53/1462 ,  B01D53/1468 ,  B01D53/1475 ,  B01D53/1493 ,  B01D53/18 ,  B01D53/52 ,  B01D53/526 ,  B01D53/62 ,  B01D53/78 ,  B01J8/02 ,  B01J20/06 ,  B01J20/20 ,  B01J20/261 ,  B01J20/28016 ,  B01J20/28019 ,  C01B3/34 ,  C10K1/004 ,  C10K1/143 ,  C10K1/32 ,  C10L3/103 ,  B01D2251/602 ,  B01D2252/20405 ,  B01D2252/20421 ,  B01D2252/20426 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2252/504 ,  B01D2253/102 ,  B01D2253/1124 ,  B01D2256/22 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2258/05 ,  B01J2220/46 ,  C01B2203/0205 ,  C01B2203/1241 ,  C01B2203/1258 ,  C10L2290/542

Abstract: Disclosed is an adsorbent containing a metal oxide for adsorption of hydrogen sulfide in biogas, and a biogas purification system using the same.

公开(公告)号：US20230357658A1

公开(公告)日：2023-11-09

申请号：US17777456

申请日：2020-12-01

Applicant: IFP Energies nouvelles

Inventor： Julien GRANDJEAN ,  Thierry HUARD ,  Aurelie WENDER ,  Francois GROSJEAN ,  Jean KITTEL ,  Abdelkader LETTAT ,  Marie DEHLINGER ,  Aurelie MOURET ,  Xavier COURTIAL

IPC: C10L3/10 ,  B01D53/14 ,  B01D53/52 ,  B01D53/62 ,  B01D53/96

CPC classification number: C10L3/103 ,  C10L3/104 ,  B01D53/1493 ,  B01D53/1425 ,  B01D53/1462 ,  B01D53/526 ,  B01D53/62 ,  B01D53/96 ,  B01D2252/602 ,  B01D2252/20415 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2252/103 ,  B01D2252/504 ,  B01D2252/20447 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2257/306 ,  B01D2257/308 ,  B01D2258/05 ,  B01D2256/245

Abstract: The present invention relates to a process for removing acid compounds contained in a gaseous effluent which consists in bringing a gaseous effluent into contact, in the absorption column, with an absorbent solution comprising water, between 20% and 28% by weight of pentamethyldipropylenetriamine and between 5% and 35% by weight of N-methyldiethanolamine.

公开(公告)号：US11731103B2

公开(公告)日：2023-08-22

申请号：US16772155

申请日：2020-03-27

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Il Hyun Baek ,  Sung Chan Nam

IPC: B01J20/06 ,  B01J20/08 ,  B01D53/04 ,  B01D53/14 ,  B01D53/52 ,  B01D53/78 ,  B01J20/20 ,  B01J20/26 ,  B01J20/28 ,  C01B3/34 ,  C10K1/00 ,  C10K1/32 ,  C10L3/10 ,  B01D53/02 ,  B01D53/18 ,  B01D53/62 ,  B01J8/02 ,  C10K1/14

CPC classification number: B01J20/08 ,  B01D53/02 ,  B01D53/04 ,  B01D53/1425 ,  B01D53/1462 ,  B01D53/1468 ,  B01D53/1475 ,  B01D53/1493 ,  B01D53/18 ,  B01D53/52 ,  B01D53/526 ,  B01D53/62 ,  B01D53/78 ,  B01J8/02 ,  B01J20/06 ,  B01J20/20 ,  B01J20/261 ,  B01J20/28016 ,  B01J20/28019 ,  C01B3/34 ,  C10K1/004 ,  C10K1/143 ,  C10K1/32 ,  C10L3/103 ,  B01D2251/602 ,  B01D2252/20405 ,  B01D2252/20421 ,  B01D2252/20426 ,  B01D2252/20431 ,  B01D2252/20489 ,  B01D2252/504 ,  B01D2253/102 ,  B01D2253/1124 ,  B01D2256/22 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2258/05 ,  B01J2220/46 ,  C01B2203/0205 ,  C01B2203/1241 ,  C01B2203/1258 ,  C10L2290/542

Abstract: Disclosed is an adsorbent containing a metal oxide for adsorption of hydrogen sulfide in biogas, and a biogas purification system using the same.

公开(公告)号：US11701612B2

公开(公告)日：2023-07-18

申请号：US15734803

申请日：2019-06-14

Applicant: SYSADVANCE—SISTEMAS DE ENGENHARIA S.A.

Inventor： Patrick Da Silva Barcia ,  Daniel Antonio Santos Silva Ferreira ,  Silvio Daniel Da Silva Carvalho Monteiro

IPC: B01D53/047 ,  B01D51/10 ,  B01D53/00 ,  C07C7/13

CPC classification number: B01D53/0476 ,  B01D51/10 ,  B01D53/002 ,  C07C7/13 ,  B01D2253/102 ,  B01D2253/116 ,  B01D2253/306 ,  B01D2253/308 ,  B01D2256/245 ,  B01D2257/102 ,  B01D2257/104 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2257/80 ,  B01D2258/05 ,  B01D2259/4062 ,  B01D2259/40075 ,  B01D2259/40079 ,  B01D2259/40081 ,  B01D2259/41 ,  B01D2259/414

Abstract: A multi-stage process to remove contaminant gases from raw methane streams is provided. The present technology is an innovative solution to recover and purify biogas by use of a process having at least two pressure swing adsorption stages. Taking advantage of the presence of carbon dioxide in the raw biogas streams, nitrogen and oxygen are bulky removed in the first stage, using selective adsorbents, and a nitrogen and oxygen-depleted intermediate stream is yielded to the second stage. The second stage employs an adsorbent or adsorbents to selectively remove carbon dioxide and trace amounts of remaining nitrogen and oxygen, thus producing a purer methane stream that meets pipeline and natural gas specifications.

公开(公告)号：US11666853B2

公开(公告)日：2023-06-06

申请号：US17175705

申请日：2021-02-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY ,  KOREA LAND & HOUSING CORPORATION

Inventor： In Wook Nah ,  Jae Ik Kim ,  Soon Jong Kwak ,  In Hwan Oh ,  Daeseung Kyung ,  Youngjong Sim ,  Yeongmin Kim ,  Han-Guen Ahn ,  Sang-Ick Choi

IPC: B01D53/14

CPC classification number: B01D53/1493 ,  B01D53/1475 ,  B01D2252/2041 ,  B01D2252/20415 ,  B01D2252/20421 ,  B01D2252/20484 ,  B01D2257/504 ,  B01D2258/01 ,  B01D2258/05

Abstract: Disclosed are a carbon dioxide absorbent composition in which an N-alkylaminoalkanol; a polyhydroxyamine-based compound; and ethylenediamine and/or diethylenetriamine are mixed, a method for preparing the same, and a method and an apparatus for carbon dioxide absorption/separation using the same. Since the carbon dioxide absorbent according to the present disclosure has superior carbon dioxide absorption capacity and remarkably lower absorbent recycling temperature as compared to the existing absorbents such as monoethanolamine, etc., total energy consumption in the capturing process can be reduced greatly. In addition, since carbon dioxide is recovered at low recycling temperature, contamination by water or absorbent vapor may be prevented.

公开(公告)号：US20230166995A1

公开(公告)日：2023-06-01

申请号：US17921202

申请日：2021-04-19

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Peiying HONG ,  Moustapha HARB ,  Hong CHENG ,  Nicolas AUGSBURGER

IPC: C02F9/00 ,  C02F1/32 ,  B01D53/48 ,  C02F1/72 ,  C02F3/28

CPC classification number: C02F9/00 ,  C02F1/32 ,  B01D53/48 ,  C02F1/722 ,  C02F3/2853 ,  C02F3/2806 ,  B01D2257/30 ,  B01D2258/05 ,  C02F1/283

Abstract: A wastewater treatment plant includes an anaerobic membrane bioreactor, AnMBR, unit configured to receive wastewater and to produce (1) a final permeate and (2) a gas; an oxidation disinfection unit configured to receive the final permeate and to remove biological and chemical contaminants from the final permeate to generate a final effluent; and an energy recovery unit configured to receive the gas from the AnMBR unit and generate electrical energy. The wastewater treatment plant does not use chlorination.

公开(公告)号：US20190030482A1

公开(公告)日：2019-01-31

申请号：US15711571

申请日：2017-09-21

Applicant: Air Liquide Advanced Technologies, U.S. LLC

Inventor： Yong DING ,  Michael J. Mitariten

IPC: B01D53/22 ,  B01D53/26 ,  B01D69/12 ,  B01D71/80 ,  B01D71/56 ,  B01D71/52 ,  C07C7/144 ,  C07C7/00 ,  C10L3/10

CPC classification number: B01D53/226 ,  B01D53/228 ,  B01D53/265 ,  B01D53/268 ,  B01D69/10 ,  B01D69/12 ,  B01D71/52 ,  B01D71/56 ,  B01D71/80 ,  B01D2256/245 ,  B01D2257/102 ,  B01D2257/104 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2257/55 ,  B01D2257/708 ,  B01D2258/05 ,  B01D2317/08 ,  B01D2319/022 ,  C07C7/005 ,  C07C7/144 ,  C10L3/101 ,  C10L3/103 ,  C10L3/104 ,  C10L3/105 ,  C10L3/106 ,  C10L2290/10 ,  C10L2290/26 ,  C10L2290/46 ,  C10L2290/545 ,  C10L2290/548 ,  C07C9/04

Abstract: The invention relates to a process for recovering methane from digester biogas or landfill gas. More specifically, the invention pertains to a method for producing biomethane that removes impurities from a compressed digester biogas with staged membrane modules of at least two different types, to produce a biomethane having at least 94% CH4, below 3% of CO2, and below 4 ppm of H2S.

公开(公告)号：US20180353929A1

公开(公告)日：2018-12-13

申请号：US16005907

申请日：2018-06-12

Applicant: AXENS ,  IFP Energies Nouvelles

Inventor： Delphine BAZER-BACHI ,  David CHICHE ,  Joseph LOPEZ ,  Thomas SERRES ,  Tom FRISING ,  Olivier DUCREUX ,  Patrick EUZEN

IPC: B01J20/02 ,  B01J20/06 ,  B01J20/30 ,  B01D53/52

CPC classification number: B01J20/0237 ,  B01D53/02 ,  B01D53/48 ,  B01D53/52 ,  B01D2253/112 ,  B01D2257/30 ,  B01D2257/304 ,  B01D2257/306 ,  B01D2257/308 ,  B01D2257/502 ,  B01D2257/553 ,  B01D2258/05 ,  B01J20/0277 ,  B01J20/06 ,  B01J20/28011 ,  B01J20/2803 ,  B01J20/3007 ,  B01J20/3014 ,  B01J20/3042 ,  B01J20/3078 ,  B01J20/3085 ,  B01J2220/42

Abstract: The invention relates to a method for preparing a solid comprising the mixture of a set of compounds comprising at least one Cu2(OH)2CO3 powder, one metal oxide powder selected from the group of metals consisting of copper, zinc, iron, manganese and mixtures thereof, and at least one binder as well as the use of the solid prepared by means of this method.