公开(公告)号：US20210331992A1

公开(公告)日：2021-10-28

申请号：US17236496

申请日：2021-04-21

Applicant: ExxonMobil Research and Engineering Company

Inventor： Partha Nandi ,  Steven L. Suib

IPC: C07C29/50 ,  B01J27/24 ,  B01J3/00

Abstract: Systems and methods are provided for direct conversion of methane and/or ethane to methanol. The methods can include exposing methane to an oxidant, such as O2, in a solvent at conditions that are supercritical for the solvent while having a temperature of 310° C. or less, or about 300° C. or less, or about 290° C. or less. The solvent can correspond to an electron donor solvent that, when in a supercritical state, can complex with O2. By forming a complex with the O2, the supercritical electron donor solvent can facilitate conversion of alkane to methanol at short residence times while reducing or minimizing further oxidation of the methanol to other products.

公开(公告)号：US20210325360A1

公开(公告)日：2021-10-21

申请号：US16852391

申请日：2020-04-17

Applicant: ExxonMobil Research and Engineering Company

Inventor： Lin Wang ,  David G.L. Holt ,  Pilanda Watkins-Curry

IPC: G01N33/28 ,  G01N13/02

Abstract: Provided is a method for determining air release performance of a lubricating oil. The method involves determining air release time of the lubricating oil in accordance with ASTM D3427 at a designated temperature; determining surface tension of the lubricating oil at the temperature used in ASTM D3427; determining kinematic viscosity of the lubricating oil in accordance with ASTM D445 at the temperature used in ASTM 3427; and utilizing the surface tension, ASTM D3427 air release time, and ASTM D445 kinematic viscosity to determine air release performance of the lubricating oil. Surface tension is correlated with ASTM D3427 air release time at an ASTM D445 kinematic viscosity of at least about 30 cSt. The method has higher measurement sensitivity and reproducibility/repeatability than ASTM D3427.

公开(公告)号：US11136516B2

公开(公告)日：2021-10-05

申请号：US16869849

申请日：2020-05-08

Applicant: ExxonMobil Research and Engineering Company

Inventor： David J. Abdallah ,  Krystal B. Wrigley

IPC: C10L1/232 ,  C10L10/10

Abstract: Provided are octane enhancing additives and methods that improve a liquid fuel composition's octane rating. A liquid fuel composition may comprise a liquid fuel and an octane enhancing additive. The octane enhancing additive may comprise an indoline compound with a bicyclic ring structure, wherein the indoline compound comprises a six-membered aromatic ring and a five-membered aliphatic ring that share a carbon-carbon aromatic bond. The five-membered aliphatic ring may be heterocyclic and may comprise a nitrogen positioned in an alpha position to the six-membered aromatic ring.

公开(公告)号：US20210302371A1

公开(公告)日：2021-09-30

申请号：US17205528

申请日：2021-03-18

Applicant: ExxonMobil Research and Engineering Company

Inventor： Ashley M. Wittrig ,  Kuangnan Qian ,  Thomas R. Fredriksen

IPC: G01N27/626 ,  H01J49/16 ,  G01N1/38 ,  H01J49/38

Abstract: A method for detecting and analyzing olefins in petroleum by electrospray ionization mass spectrometry can include obtaining a hydrocarbon sample comprising at least about 90 wt % of saturate compounds; producing a solution comprising the hydrocarbon sample and a metal salt, the metal salt comprising a metal ion; forming olefin-metal ion complexes by electrospray ionization; and detecting the olefin-metal ion complexes using mass spectrometry.

公开(公告)号：US20210301211A1

公开(公告)日：2021-09-30

申请号：US16830440

申请日：2020-03-26

Applicant: ExxonMobil Research and Engineering Company

Inventor： Stuart E. Smith ,  Sebastin K. Seider ,  Kazem V. Edmond

IPC: C10B55/00 ,  C10B57/06 ,  C10G9/00

Abstract: Systems and methods are provided for controlling the morphology of coke produced during delayed coking. The morphology control is achieved in part by introducing elemental sulfur into the coker feedstock prior to coking. The elemental sulfur can be introduced into the feed under conditions so that the sulfur is well-dispersed within the feed for a sufficient period of time. This can allow for relatively even reaction of sulfur with components throughout the feed, resulting in a relatively small, uniform domain size distribution for the coke produced during delayed coking. This coke can correspond to shot coke. By producing coke with a small and relatively uniform domain size distribution, the risk of uneven heating within the coke can be reduced or minimized.

公开(公告)号：US11130915B2

公开(公告)日：2021-09-28

申请号：US16903252

申请日：2020-06-16

Applicant: ExxonMobil Research and Engineering Company

Inventor： Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan ,  David W. Staubs ,  Terry E. Helton ,  Mitch L. Hindman

IPC: C10G3/00 ,  B01D3/00 ,  C07C41/09 ,  C10L1/06 ,  C07C41/42

Abstract: Methanol-to-gasoline (MTG) conversion may be performed with forward methanol processing. Methanol may be fed to a first reactor where it may be catalytically converted under dimethyl ether formation conditions in the presence of a first catalyst to form a product mixture comprising dimethyl ether (DME), methanol, and water. The DME may be separated from the methanol and the water and delivered to a second reactor. In the second reactor, the DME may be catalytically converted under MTG conversion conditions in the presence of a second catalyst to form a second product mixture comprising gasoline hydrocarbons and light hydrocarbon gas. The methanol and the water from the first reactor may be separated further to obtain substantially water-free methanol, which may be delivered to the second reactor. The separation of methanol from the water may be performed using the light hydrocarbon gas to effect stripping of the methanol.

公开(公告)号：US11130204B2

公开(公告)日：2021-09-28

申请号：US15584835

申请日：2017-05-02

Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY ,  POSCO

Inventor： Andrew J. Wasson ,  Douglas P. Fairchild ,  HyunWoo Jin ,  Xin Yue ,  IlWook Han ,  Sangchul Lee ,  Bongkeun Lee ,  Jongsub Lee

IPC: B23K35/00 ,  C22C38/58 ,  B23K35/30 ,  C22C38/02 ,  C22C38/22 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/38 ,  B23K9/23 ,  B23K35/38 ,  B23K35/02

Abstract: The present disclosure relates to a welding composition for joining high manganese steel base metals to low carbon steel base metals, as well as systems and methods for the same. The composition includes: carbon in a range of about 0.1 wt % to about 0.4 wt %; manganese in a range of about 15 wt % to about 25 wt %; chromium in a range of about 2.0 wt % to about 8.0 wt %; molybdenum in an amount of ≤ about 2.0 wt %; nickel in an amount of ≤ about 10 wt %; silicon in an amount of ≤ about 0.7 wt %; sulfur in an amount of ≤ about 100 ppm; phosphorus in an amount of ≤ about 200 ppm; and a balance comprising iron. In an embodiment, the composition has an austenitic microstructure.

公开(公告)号：US20210269889A1

公开(公告)日：2021-09-02

申请号：US17142799

申请日：2021-01-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Changyub Paek ,  Arsam Behkish ,  Giovanni Pilloni

IPC: C13K1/04 ,  C01B32/324 ,  C02F3/28 ,  B01D15/18

Abstract: The present disclosure relates to methods and systems for converting biomass comprising lignocellulosic material into biofuels and biochemicals that contribute to reduction of greenhouse gas emissions. In particular, the present disclosure relates to methods and systems for the removal or reduction of impurities during lignocellulosic biomass processing to enhance biorefinery production of biofuels and biochemicals.

公开(公告)号：US11103844B2

公开(公告)日：2021-08-31

申请号：US16453339

申请日：2019-06-26

Applicant: ExxonMobil Research and Engineering Company

Inventor： Mohsen N. Harandi

IPC: B01J8/18 ,  B01J8/22 ,  C10G9/16 ,  C10G9/32

Abstract: A process and system that use the heat produced in the generation of Syngas to provide heat to an endothermic reaction zone are disclosed. A method for providing heat to an endothermic reaction may comprise producing Syngas in a reforming reactor. The method may further comprise recovering heat from the producing the Syngas to heat an endothermic reaction stream in a heat transfer zone. The method may further comprise allowing reactants in the endothermic reaction stream to react to form an endothermic reaction product stream. The method may further comprise withdrawing the endothermic reaction product stream from the heat transfer zone.

公开(公告)号：US20210262995A1

公开(公告)日：2021-08-26

申请号：US17142786

申请日：2021-01-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Anding Zhang ,  Kuangnan Qian ,  Chengrong Wang ,  Amy C. Clingenpeel

IPC: G01N31/12

Abstract: The present disclosure relates to methods for compositional analysis of algal biomass, specifically weight percent elemental composition. In at least one embodiment, a method for compositional analysis of an algae sample includes flash combusting a first portion of the algae sample to provide a carbon wt %, a hydrogen wt %, and a nitrogen weight %. The method includes pyrolysing a second portion of the algae sample to provide an oxygen wt %. The method includes scanning a third portion of the algae sample using x-ray fluorescence to provide an elemental intensity. The method includes normalizing the elemental intensity using the carbon wt %, the hydrogen wt %, the nitrogen wt %, and/or the oxygen wt %.