公开(公告)号：US20240034923A1

公开(公告)日：2024-02-01

申请号：US18256319

申请日：2021-10-08

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Kevin A. HARNSBERRY ,  P. Scott NORTHROP

IPC: C09K8/532 ,  C09K8/524

CPC classification number: C09K8/532 ,  C09K8/524

Abstract: Disulfide solvents may be particularly effective for dissolving deposits comprising elemental sulfur, but the extreme odor of these solvent may make their use rather problematic. Solvent blends comprising at least one disulfide solvent, amine solvent, ketone solvent, and ester solvent may afford a less obnoxious odor and not appreciably compromise the sulfur dissolution capabilities. Surfaces contacted with such solvent blends or at least partially spent variants thereof may exhibit excessive odor due to loss of one or more of the amine, ketone, or ester solvents. Excessive odor resulting from a solvent residue upon a surface may be alleviated by contacting the surface with at least one oxidant. Odor balance may also be restored to at least partially spent solvent blends by introducing additional ester solvent, which may convert a biphasic mixture into an emulsion comprising the disulfide solvent.

公开(公告)号：US20230347281A1

公开(公告)日：2023-11-02

申请号：US18300166

申请日：2023-04-13

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Priya SANTHANAM ,  P. Scott NORTHROP ,  Shwetha RAMKUMAR ,  John Timothy CULLINANE ,  Sean T. PHILBROOK

IPC: B01D53/14 ,  C10L3/10

CPC classification number: B01D53/1487 ,  B01D53/1462 ,  B01D53/1406 ,  C10L3/103 ,  C10L3/104 ,  C10L3/101 ,  B01D2252/103 ,  B01D2252/20489 ,  B01D2256/24 ,  B01D2257/7027 ,  B01D2257/708 ,  B01D2257/302 ,  B01D2257/504 ,  C10L2290/545

Abstract: The present disclosure relates to methods and systems for sweetening natural gas may utilize a water wash to achieve a reduction in raw natural gas stream contaminants (e.g., particulate contaminants and/or chemical contaminants) and/or to recover solvent used for removing H2S and CO2 from the natural gas. For example, a method may include contacting a first natural gas stream with a first water stream in a co-current contacting system to produce a second natural gas stream and a second water stream, wherein the first natural gas stream comprises natural gas, an acid gas, and a contaminate, and wherein a concentration of the contaminate in the second natural gas stream is less than a concentration of the contaminate in the first natural gas stream; and removing at least a portion of the acid gas from the second natural gas stream.

公开(公告)号：US20240174912A1

公开(公告)日：2024-05-30

申请号：US18549334

申请日：2022-03-16

Applicant: ExxonMobil Technology and Engineering Company

Inventor： P. Scott NORTHROP ,  Kevin A. HARNSBERRY

IPC: C09K8/536 ,  C09K8/532

CPC classification number: C09K8/536 ,  C09K8/532

Abstract: Methods for utilizing and regenerating solvent mixtures for dissolving elemental sulfur within hydrocarbon wells are described herein. One method includes providing a solvent mixture including an elemental sulfur solvent fraction including disulfide compound(s), as well as an odorant fraction including a lactate ester solvent. The method also includes injecting the solvent mixture into a hydrocarbon well such that the elemental sulfur solvent fraction dissolves elemental sulfur deposited on well components, as well as collecting the resulting spent solvent mixture, which includes thiols and residual lactate ester solvent, within a spent solvent separator. The method further includes sparging the spent solvent mixture with oxidizer within the spent solvent separator to allow for oxidation of the thiols to produce the disulfide compound(s) using the residual lactate ester solvent (and, optionally, additional lactate ester solvent), as well as regenerating the solvent mixture using at least a portion of the produced disulfide compound(s).