公开(公告)号：US20240425759A1

公开(公告)日：2024-12-26

申请号：US18274021

申请日：2022-01-27

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Guang Cao ,  James R. Bielenberg ,  August W. Bosse ,  David C. Dankworth ,  Sumathy Raman ,  Michael Siskin

IPC: C10G1/08 ,  C01B3/24

Abstract: Methods are provided for upgrading of pyrolysis carbon in order to allow for conversion of the pyrolysis carbon into higher value products. Instead of attempting to convert methane into a high value carbon product (such as carbon nanotubes) and H2 in a single reaction step, pyrolysis conditions can be used to form H2 and pyrolysis carbon. The pyrolysis carbon can then be treated in order to convert the pyrolysis carbon (H to C atomic ratio of less than 0.20) into a product with a higher hydrogen content (H to C atomic ratio of 0.25-0.9 or 2.0-7.0 wt % H). The treatment can correspond to exposing the pyrolysis carbon with hydrogen in the presence of a catalyst, exposing the pyrolysis carbon to conditions for alkylation, or a sequential combination thereof. This can convert the pyrolysis carbon into heavy hydrocarbon products that are resin-like solids at room temperature.

公开(公告)号：US11492543B2

公开(公告)日：2022-11-08

申请号：US17159209

申请日：2021-01-27

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Peter A. Gordon ,  Michael Siskin ,  Harry W. Deckman

IPC: C09K8/80 ,  C09K8/66

Abstract: Proppant particulates like sand are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. Fracturing fluids and methods of hydraulic fracturing may also use proppant particulates composed of flexicoke material. Such proppant particulates may have improved transport into fractures because of lower density than traditional proppants like sand and may produce fewer fines that reduce fluid flow through proppant packs.

公开(公告)号：US20230226483A1

公开(公告)日：2023-07-20

申请号：US18002519

申请日：2021-07-06

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Carla S. Pereira ,  Jenny P. Seagraves ,  P. Scott Northrop ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst ,  Georg K. Sieder

IPC: B01D53/14 ,  B01D53/52 ,  B01D53/62 ,  B01D53/78 ,  B01D53/96

CPC classification number: B01D53/1425 ,  B01D53/1468 ,  B01D53/1493 ,  B01D53/1475 ,  B01D53/52 ,  B01D53/62 ,  B01D53/78 ,  B01D53/96 ,  B01D2257/304 ,  B01D2257/504 ,  B01D2252/2041 ,  B01D2252/20405 ,  B01D2252/20426 ,  B01D2252/20452 ,  B01D2252/20468 ,  B01D2252/20484 ,  B01D2252/60

Abstract: Capture of hydrogen sulfide from a gas mixture may be accomplished using an aqueous solution comprising an amine. Certain sterically hindered amines may selectively form a reaction product with hydrogen sulfide under kinetically controlled contacting conditions and afford a light phase and a heavy phase above a critical solution temperature, wherein the hydrogen sulfide may be present in either phase. Upon separation of the light phase from the heavy phase, processing of one of the phases may take place to remove hydrogen sulfide therefrom. Recycling of the amine to an absorber tower may then take place to promote capture of additional hydrogen sulfide.

公开(公告)号：US12053738B2

公开(公告)日：2024-08-06

申请号：US17537654

申请日：2021-11-30

Applicant: ExxonMobil Technology and Engineering Company ,  BASF

Inventor： Carla S. Pereira ,  Michael Siskin ,  Thomas Ingram ,  Gerald Vorberg ,  Martin Ernst

IPC: B01D53/52 ,  B01D53/14 ,  B01D53/18 ,  B01D53/78 ,  C10L3/10

CPC classification number: B01D53/1493 ,  B01D53/1425 ,  B01D53/1468 ,  B01D53/18 ,  C10L3/10 ,  C10L3/103 ,  B01D2252/204 ,  B01D2252/20431 ,  B01D2252/20478 ,  B01D2252/20489 ,  B01D2257/304 ,  B01D2257/504 ,  C10L2290/542 ,  Y02C20/40

Abstract: A process for selectively separating H2S from a gas mixture which also comprises CO2 is disclosed. A stream of the gas mixture is contacted with an absorbent solution comprising one or more amines, alkanolamines, hindered alkanolamines, capped alkanolamines, or mixtures thereof. The H2S/CO2 selectivity of the absorbent solution is preferably greater than about 4.0 for an acid gas loading [mol(CO2+H2S)/mol(amine)] between about 0.2 and about 0.6, and is achieved by reducing pH of the absorbent solution.

公开(公告)号：US11578262B2

公开(公告)日：2023-02-14

申请号：US17159221

申请日：2021-01-27

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Peter A. Gordon ,  Michael Siskin ,  Harry W. Deckman

IPC: C09K8/80 ,  E21B43/267 ,  C09K8/66

Abstract: Proppant particulates like sand are commonly used in hydraulic fracturing operations to maintain one or more fractures in an opened state following the release of hydraulic pressure. Fracturing fluids and methods of hydraulic fracturing may also use proppant particulates composed of fluid coke material (also referred to as fluid coke proppant particulates). In some instances, the fluid coke proppant particulates are characterized by a bulk density of less than about 0.9 grams per cubic centimeter.