公开(公告)号：US20210045305A1

公开(公告)日：2021-02-18

申请号：US16891136

申请日：2020-06-03

Applicant: ExxonMobil Research and Engineering Company

Inventor： Everett J. O'Neal ,  Mark A. Deimund

IPC: A01G33/00 ,  C12N1/02 ,  C12M1/34

Abstract: Methods for autoflocculation of algae cells in an algae water slurry to facilitate harvesting. Algae cells are cultivated in the algae water slurry to produce an algal biomass and thereafter autoflocculated to allow for an enhanced dewatering harvesting process. Autoflocculation provides a cost-effective and efficient harvesting method compared to traditional dewatering processes.

公开(公告)号：US10240094B2

公开(公告)日：2019-03-26

申请号：US15862977

申请日：2018-01-05

Applicant: ExxonMobil Research and Engineering Company

Inventor： Brandon J. O'Neill ,  Stephen J. McCarthy ,  Mark A. Deimund ,  Ajit B. Dandekar

IPC: C07C1/20 ,  C10G3/00 ,  B01J29/40 ,  B01J29/70 ,  B01J27/14 ,  B01J29/06 ,  B01J35/10 ,  B01J8/08 ,  C07C1/12 ,  B01J8/02

Abstract: Systems and methods are provided for modifying the composition of the conversion catalyst in a reactor for oxygenate conversion during conversion of an oxygenate feed to allow for adjustment of the slate of conversion products. The modification of the conversion catalyst can be performed by introducing a substantial portion (relative to the amount of catalyst inventory in the reaction system) of make-up catalyst having a distinct composition relative to the conversion catalyst in the reaction system. Introducing the distinct composition of make-up catalyst can modify the composition of the conversion catalyst in the reactor to allow for changes in the resulting product slate. By introducing the distinct catalyst composition, the conversion catalyst in the reactor can correspond to a different composition of catalyst than the overall average catalyst composition within the catalyst inventory in the reaction system.

公开(公告)号：US20210108165A1

公开(公告)日：2021-04-15

申请号：US17067948

申请日：2020-10-12

Applicant: ExxonMobil Research and Engineering Company

Inventor： Samantha J. Reuter ,  Rachel G. Munson ,  Patrick L. Hanks ,  Everett J. O'Neal ,  Mark A. Deimund ,  Sarah E. Feicht

IPC: C12M1/00 ,  C12N1/12 ,  C02F1/32 ,  C02F1/52 ,  C02F1/72 ,  C02F1/78

Abstract: A system for growing algae for biofuel production includes a bioreactor configured to contain an algae slurry, an algae-water separator fluidly coupled to the bioreactor to receive and separate the algae slurry into algae and separated water, and an organics treatment system that receives a portion of the separated water and is configured to reduce a concentration of organics in the portion of the separated water. A recycle line conveys the portion of the separated water back to the bioreactor following processing in the organics treatment system, wherein the portion of the separated water is recycled and forms part of the algae slurry reducing the raw water demand of the bioreactor.