公开(公告)号：US11332550B2

公开(公告)日：2022-05-17

申请号：US16488659

申请日：2018-02-26

Applicant: BASF SE

Inventor： Stephan Bauer ,  Markus Toennessen ,  Christophe Bauduin ,  Katrin Baumann ,  Marco Krüger ,  Andreas Daiss ,  Markus Muehl

IPC: B01J8/24 ,  B01J19/00 ,  B01J19/18 ,  B01J19/24 ,  C08F2/01 ,  C08F220/14

Abstract: An apparatus for production of pulverulent polymers having a reactor for droplet polymerization with an apparatus for dropletization of a monomer solution for the preparation of the polymer. The apparatus for dropletization has holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point at the periphery of the reactor and a fluidized bed, wherein at least one of the following is fulfilled: an apparatus for increasing turbulence in the gas flow is disposed in the region of the apparatus for dropletization of the monomer solution, an apparatus for increasing turbulence in the gas flow is disposed in the region of the addition point for the gas, the addition point for gas is configured such that elevated turbulence is generated. A process for producing pulverulent polymers, in which an increase in flow turbulence in the gas flow in the region of the apparatus for dropletization also is disclosed.

公开(公告)号：US20130260032A1

公开(公告)日：2013-10-03

申请号：US13848879

申请日：2013-03-22

Applicant: BASF SE

Inventor： Holger Barthel ,  Gerald Gruenewald ,  Norbert Herfert ,  Markus Muehl ,  Birgit Reinhard

IPC: B01J20/32

CPC classification number: B01J20/3225 ,  B01J20/267 ,  B01J20/3078 ,  B01J2220/68 ,  C08J3/243 ,  C08J3/245 ,  C08J2333/02

Abstract: A process for thermal surface postcrosslinking of water-absorbing polymer particles, wherein the polymer particles are coated with an aqueous solution, the coated polymer particles are deagglomerated and the deagglomerated polymer particles are thermally surface postcrosslinked by means of a drum heat exchanger with an inverse screw helix.

Abstract translation: 一种用于吸水聚合物颗粒的热表面后交联的方法，其中聚合物颗粒用水溶液涂覆，涂覆的聚合物颗粒被解聚并且解聚聚合物颗粒通过具有反螺杆的滚筒式热交换器进行热表面后交联 螺旋。

公开(公告)号：US20200231711A1

公开(公告)日：2020-07-23

申请号：US16488659

申请日：2018-02-26

Applicant: BASF SE

Inventor： Stephan Bauer ,  Markus Toennessen ,  Christophe Bauduin ,  Katrin Baumann ,  Marco Krüger ,  Andreas Daiss ,  Markus Muehl

IPC: C08F2/01 ,  B01J19/24 ,  B01J8/24 ,  B01J19/18 ,  B01J19/00 ,  C08F220/14

Abstract: An apparatus for production of pulverulent polymers having a reactor for droplet polymerization with an apparatus for dropletization of a monomer solution for the preparation of the polymer. The apparatus for dropletization has holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point at the periphery of the reactor and a fluidized bed, wherein at least one of the following is fulfilled: an apparatus for increasing turbulence in the gas flow is disposed in the region of the apparatus for dropletization of the monomer solution, an apparatus for increasing turbulence in the gas flow is disposed in the region of the addition point for the gas, the addition point for gas is configured such that elevated turbulence is generated. A process for producing pulverulent polymers, in which an increase in flow turbulence in the gas flow in the region of the apparatus for dropletization also is disclosed.

公开(公告)号：US10683371B2

公开(公告)日：2020-06-16

申请号：US15773591

申请日：2016-11-15

Applicant: BASF SE

Inventor： Marco Krueger ,  Karl Possemiers ,  Gerald Gruenewald ,  Juergen Freiberg ,  Markus Muehl

IPC: C08F2/01 ,  B01J4/00 ,  C08F2/34 ,  B01J19/24 ,  B01J2/16 ,  B01J8/24 ,  C08F2/12 ,  C08F2/14 ,  C08F20/14

Abstract: The invention relates to an apparatus for producing pulverulent poly(meth)acrylate, comprising a reactor for droplet polymerization having an apparatus for dropletization of a monomer solution for the preparation of the poly(meth)acrylate having holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point on the circumference of the reactor, a fluidized bed and an apparatus for product discharge from the fluidized bed. The apparatus for product discharge comprises a discharge apparatus, with a backup segment (39) disposed above the discharge apparatus.

公开(公告)号：US20180319906A1

公开(公告)日：2018-11-08

申请号：US15773591

申请日：2016-11-15

Applicant: BASF SE

Inventor： Marco Kruger ,  Karl Possemiers ,  Gerald Gruenewald ,  Juergen Freiberg ,  Markus Muehl

IPC: C08F2/01 ,  C08F2/12 ,  C08F20/14 ,  B01J2/16 ,  B01J19/24 ,  B01J4/00

CPC classification number: C08F2/01 ,  B01J2/16 ,  B01J4/002 ,  B01J19/24 ,  B01J19/2405 ,  B01J2219/00414 ,  B01J2219/0072 ,  B01J2219/185 ,  C08F2/12 ,  C08F2/34 ,  C08F20/14

Abstract: The invention relates to an apparatus for producing pulverulent poly(meth)acrylate, comprising a reactor for droplet polymerization having an apparatus for dropletization of a monomer solution for the preparation of the poly(meth)acrylate having holes through which the monomer solution is introduced, an addition point for a gas above the apparatus for dropletization, at least one gas withdrawal point on the circumference of the reactor, a fluidized bed and an apparatus for product discharge from the fluidized bed. The apparatus for product discharge comprises a discharge apparatus, with a backup segment (39) disposed above the discharge apparatus.