公开(公告)号：US11634515B2

公开(公告)日：2023-04-25

申请号：US16759158

申请日：2018-10-18

Applicant: BASF SE

Inventor： Hazel Sprafke ,  Tobias Joachim Zimmermann ,  Dirk Meckelnburg ,  Dennis Loesch ,  Markus Ostermayr ,  Faissal-Ali El-Toufaili

IPC: C08F20/56 ,  C08F220/06 ,  C08F220/56 ,  C08J3/07 ,  C09K8/588 ,  E21B21/00 ,  E21B43/16 ,  E21B43/26 ,  C08J3/075 ,  C08K5/00

Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. The transportable polymerization unit comprises a cylindrical upper part, a conical part at its lower end, feeds for the aqueous monomer solution, a closable bottom opening, and means allowing to deploy the polymerization unit in a vertical manner.

公开(公告)号：US11629205B2

公开(公告)日：2023-04-18

申请号：US16759179

申请日：2018-10-18

Applicant: BASF SE

Inventor： Hazel Sprafke ,  Markus Ostermayr ,  Tobias Joachim Zimmermann ,  Dirk Meckelnburg ,  Dennis Loesch ,  Faissal-Ali El-Toufaili

IPC: C08F20/56 ,  C08F2/01 ,  C08F2/10 ,  C08F6/00 ,  C08F220/06 ,  C08F220/56 ,  C08F228/02 ,  C08F230/02 ,  C09K8/88

Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the process is carried out in a modular, relocatable plant. The plant preferably is deployed at a location at which aqueous polyacrylamide solutions are used, for example on an oilfield or in a mining area.

公开(公告)号：US11384177B2

公开(公告)日：2022-07-12

申请号：US16759244

申请日：2018-10-18

Applicant: BASF SE

Inventor： Tobias Joachim Zimmermann ,  Faissal-Ali El-Toufaili ,  Hazel Sprafke

IPC: C08J3/07 ,  C08F20/56 ,  C08F220/56 ,  C08K5/3435 ,  C08K5/47 ,  C09K8/588 ,  C09K8/68 ,  C12P13/02 ,  E21B43/20 ,  E21B43/267 ,  E21B21/00

Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide obtained by hydrolyzing acrylonitrile in water in the presence of a biocatalyst capable of converting acrylonitrile to acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. The aqueous polyacrylamide gel furthermore comprises at least one stabilizer for prevention of polymer degradation.

公开(公告)号：US11634516B2

公开(公告)日：2023-04-25

申请号：US16759223

申请日：2018-10-18

Applicant: BASF SE

Inventor： Dennis Loesch ,  Tobias Joachim Zimmermann ,  Hazel Sprafke ,  Dirk Meckelnburg ,  Markus Ostermayr ,  Faissal-Ali El-Toufaili

IPC: C08F20/56 ,  C08F220/56 ,  C08F2/01 ,  E21B43/26 ,  E21B21/00 ,  E21B43/16

Abstract: Process for producing aqueous polyacrylamide solutions by polymerizing an aqueous solution comprising at least acrylamide thereby obtaining an aqueous polyacrylamide gel and dissolving said aqueous polyacrylamide gel in water, wherein the manufacturing steps are allocated to two different locations A and B and the process comprises the step of transporting an aqueous polyacrylamide gel hold in a transportable polymerization unit from a location A to a location B. Modular, relocatable plant for manufacturing aqueous polyacrylamide solutions wherein the units of the plant are located at two different locations A and B.

公开(公告)号：US10927222B2

公开(公告)日：2021-02-23

申请号：US16096515

申请日：2017-04-20

Applicant: BASF SE

Inventor： Sandra Jeck ,  Oliver Soetje ,  Tobias Bringmann ,  Gabriela Eugenia Fonseca Zepeda ,  Dirk Meckelnburg ,  Dennis Loesch ,  Bjoern Langlotz ,  John Barratt ,  Faissal-Ali El-Toufaili ,  Hazel Sprafke ,  Bernd Schube ,  Markus Ostermayr

IPC: C08J3/05 ,  B01F5/02 ,  B01F5/04 ,  B01F5/20 ,  B01F7/00 ,  C08F220/04 ,  C08F220/56 ,  B01F3/12 ,  B01F1/00 ,  C08F2/10 ,  B01F5/00

Abstract: A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.