公开(公告)号：US20220010219A1

公开(公告)日：2022-01-13

申请号：US16946823

申请日：2020-07-08

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chengrong Wang ,  Anding Zhang ,  Xiaochun Xu ,  Samuel J. Cady ,  Shifang Luo ,  Michael H. Ring ,  Maria Vanessa C. Aguinaldo ,  John Della Mora ,  Kegun L. Ream

IPC: C10G3/00 ,  C10L1/04 ,  G01J3/28

Abstract: Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer.

公开(公告)号：US10774286B2

公开(公告)日：2020-09-15

申请号：US16217560

申请日：2018-12-12

Applicant: ExxonMobil Research and Engineering Company

Inventor： Sarvesh K. Agrawal ,  James E. Spagnoli ,  Chengrong Wang

IPC: C10M169/00 ,  C10M119/24 ,  C10M115/08 ,  C10M169/06 ,  C10M113/10 ,  C10M117/00 ,  C10M129/95 ,  C10M133/00 ,  C10M135/36 ,  C10M137/10 ,  C10M139/00 ,  C10M145/02 ,  C10M149/18 ,  C10M161/00

Abstract: The present disclosure provides a grease composition with improved water resistance and mechanical stability at high-temperatures, including: at least one base oil; a water insoluble thickener; and a low molecular weight thixotropic polyamide composition having molecular weight distribution characteristics meeting the requirement described by the relationship: ( A + D ) ( B + C ) ≥ 0.05 where A=the % mass of the polyamide composition with a molecular weight greater than 1700 AMU; B=the % mass of the polyamide composition with a molecular weight between 1100 AMU and 1300 AMU; C=the % mass of the polyamide composition with a molecular weight between 700 AMU and 1000 AMU; and D=the % mass of the polyamide composition with a molecular weight of 600 AMU or lower (determined by GPC). The grease composition of the present disclosure provides a less than 50 penetration point change as determined by ASTM-D7342, a less than 10 mg weight loss as determined by ASTM-D4170, or both.

公开(公告)号：US11225611B1

公开(公告)日：2022-01-18

申请号：US16946823

申请日：2020-07-08

Applicant: ExxonMobil Research and Engineering Company

Inventor： Chengrong Wang ,  Anding Zhang ,  Xiaochun Xu ,  Samuel J. Cady ,  Shifang Luo ,  Michael H. Ring ,  Maria Vanessa C. Aguinaldo ,  John Della Mora ,  Kegun L. Ream

IPC: C10L1/04 ,  C10G3/00 ,  G01J3/28

Abstract: Disclose is an online analyzer to monitor conversion of a biofeedstock in a first hydrotreating stage to avoid catalyst poisoning in a subsequent stage. An example method of processing a biofeedstock may comprise hydrotreating the biofeedstock by reaction with hydrogen to form a hydrotreated biofeedstock. The method may further comprise monitoring conversion of the biofeedstock in the hydrotreating with an online analyzer.

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 %.

公开(公告)号：US20210255125A1

公开(公告)日：2021-08-19

申请号：US17142601

申请日：2021-01-06

Applicant: ExxonMobil Research and Engineering Company

Inventor： Hao Wang ,  Chengrong Wang ,  Amy C. Clingenpeel ,  Kuangnan Qian

IPC: G01N24/08 ,  A01G33/00 ,  C11B1/10

Abstract: A method and system for direct quantification of the concentration of biomolecules in algal biomass. The biomolecules include lipids, proteins, and carbohydrates. An algae slurry is cultivated within a cultivation vessel, and algal biomass is harvested therefrom. A portion of biomass is analyzed using solvent-lipid analysis to extract lipids and nuclear magnetic resonance spectroscopy is used to quantify the biomolecular concentration of the biomass.