Improved drying methods

A drying and resin technology, applied in the direction of liquid separation into beads and granulation, liquid injection device, injection device, etc., to achieve the effect of simplifying the structure, balancing the flow and eliminating dead spots

Inactive Publication Date: 2017-12-01
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Unfortunately, while vapor precipitation is relatively effective at evaporating methylene chloride, the vapor itself simultaneously partially condenses on the particles, forming a wet powder

Method used

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Embodiment Construction

[0020] The present invention may be understood more readily by reference to the following detailed description, considered in conjunction with the accompanying drawings and examples forming a part of this disclosure. It is to be understood that the invention is not limited to the specific apparatus, methods, applications, conditions or parameters described and / or shown herein, and that the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting the claimed invention. Furthermore, as used in this specification, including the appended claims, the singular forms "a", "an", and "the" include pluralities and references to specific values ​​include at least that particular value, unless the context clearly dictates otherwise. The term "plurality", as used herein, means more than one. When a range of values ​​is expressed, another embodiment includes from the one particular value and / or to the other p...

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Abstract

A process for drying resinous materials, comprising: delivering, by way of a plurality of resin channels, resin fluid comprising polymer and solvent into at least first and second steam channels (101) having within a flow of steam, the first and second steam channels (101) each receiving resin fluid from a plurality of resin channels, the first and second steam channels each (101) being received by a stage 1 manifold (121), the steam and resin being delivered under conditions so as to separate at least some of the solvent from the resin fluid; and collecting at least some of the polymer from the resin fluid.

Description

[0001] related application [0002] This application claims priority and benefit to US Patent Application 62 / 135,950 "Improved Drying Process" (filed March 20, 2015), the entirety of which is incorporated by reference for any and all purposes. technical field [0003] This disclosure relates to the field of polymer drying systems and methods. Background technique [0004] The present invention generally relates to a vapor deposition process for producing polycarbonate resin powder from a polycarbonate solution in a non-aqueous solvent (eg, dichloromethane). More specifically, the present invention relates to a more energy-efficient vapor precipitation process that produces powders with relatively low water content, thereby avoiding the need to produce acceptably dry polycarbonate powders that would otherwise require most of the post-drying capacity. Dry powders typically have less than 1% by weight volatiles. [0005] Polycarbonates are a widely used class of thermoplasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B13/06
CPCB29B13/06B29B13/065C08G64/406B01J2/02B05B7/04C08J3/122
Inventor T·霍克P·S·乔达摩W·E·霍拉J·A·马胡德R·彼得斯
Owner SABIC GLOBAL TECH BV
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