Basf Se Corporation

Gerald Grünewald

Matthias Weismantel

Rüdiger Funk

Monte Alan Peterson

Ruediger Funk

Karl Possemiers

The invention relates to a belt drier arrangement for drying an aqueous polymer gel and for comminuting the dried polymer gel to give dried polymer particles, comprising:

Belt drier arrangement for drying an aqueous polymer gel and for comminuting the dried polymer gel to give dried polymer particles and process for drying an aqueous polymer gel and for comminuting the dried polymer gel to give dried polymer particles

A process for producing superabsorbents, comprising polymerization, drying, crushing, pneumatic conveying, comminuting and classifying, wherein the gas temperature at the end of the pneumatic conveying is from 50 to 95&#xb0; C.

Method for the production of superabsorbers

A production process for production of water-absorbing polymer particles including drying an aqueous polymer gel in a belt drier with a conveyor belt. The belt drier is formed with a drier setup substantially comprising the conveyor belt and an air recycling conduit downstream of the drier setup for air recycling, where recycled air is withdrawn from the drier setup and fed back to the drier setup via the air recycling conduit.

Production method for producing water-absorbing polymer particles and belt dryer

A production process for production of water absorbing polymer particles, including drying an aqueous polymer gel in a belt drier with a conveyor belt having a drier setup in the interior, in which drying air in the interior of the drier setup is conducted in countercurrent counter to the conveying direction and the interior of the drier setup is kept substantially at a reduced pressure relative to the ambient pressure outside the drier setup, and the interior has and/or forms a pressure zone, and is especially divided into a number of pressure zones.

Production process for producing water-absorbent polymer particles and belt dryer

The invention relates to a process for producing water-absorbing polymer particles, comprising the steps of: &#x2022;&#x2014;processing an aqueous polymer gel from polymerization of a monomer solution or suspension, &#x2022;&#x2014;drying the aqueous polymer gel in a conveyer dryer, in particular in a forced air conveyer dryer, wherein &#x2022;&#x2014;the conveyer dryer has a circulating conveyer belt and the aqueous polymer gel is conveyed on the circulating conveyer belt, and wherein &#x2022;&#x2014;the circulating conveyer belt is formed as a circulating plate conveyer belt, comprising a number of belt plates separated by a hinge line of a hinge assembly and each belt plate having a surface for receiving the aqueous polymer gel, wherein said hinge assembly comprises a knuckle joint () with the hinge line in form of a straight hinge line.

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Ludwigshafen, Germany

Gerald Grünewald