Thermal insulation device for belt type polymerization

A technology of heat preservation device and polymer, applied in the field of heat preservation device, can solve the problems of inability to maintain a higher temperature in the polymer body, inconspicuous heat preservation effect of a heat preservation cover, low conversion rate of polymerization reaction, etc. Insulation effect, sufficient effect of polymerization reaction

Active Publication Date: 2018-11-23
JIANGSU FEYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The heat preservation device currently used is generally to add a heat preservation cover above the polymer, and the heat preservation effect of the heat preservation cover is not obvious; and when the temperature is low, the heat is lost too fast, which cannot keep the polymer body at a higher temperature, resulting in polymerization. The conversion rate of the reaction is low

Method used

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  • Thermal insulation device for belt type polymerization
  • Thermal insulation device for belt type polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 2685kg of acrylamide (40%), 400kg of acryloyloxyethyltrimethylammonium chloride (80%), 1380kg of deionized water, and 0.45kg of azo initiator into the reactor and mix well, adjust the pH with citric acid or sulfuric acid to 4-5, lower the temperature to 4°C, and continuously feed the material to the polymerization belt after deoxygenation, enter the heat preservation zone to form solid polymer 1 and reach the highest temperature of 89.6°C, the forward speed of the polymerization belt is 0.5m / min, when only ordinary heat preservation When the cover heats the polymer 1, the temperature of the solid polymer 1 at the outlet is 69.3°C. After using the belt type polymerization heat preservation device of the present invention, the temperature of the solid polymer 1 at the outlet is 78.7°C.

Embodiment 2

[0035] With highly active methacryloyloxyethyltrimethylammonium chloride (80%) 3500kg, deionized water 500kg, azobisisobutylimidazoline hydrochloride 2kg, 2,4,6 (trimethylbenzyl Acyl)diphenylphosphine oxide 2kg, ethylene glycol dimethacrylate 0.3g, disodium ethylenediaminetetraacetate 1.5kg were added to the reaction kettle and mixed evenly, and adipic acid was used to adjust the pH to 3.5. Feed to the polymerization belt, enter the heat preservation zone to form solid polymer 1 and reach the highest temperature of 83.5 ° C, the forward speed of the polymerization belt is 0.3m / min, when only the ordinary heat preservation cover keeps the polymer 1 warm, the solid polymer 1 at the exit The temperature of 1 is 62.6°C. After using the belt-type polymerization heat preservation device of the present invention, the temperature of solid polymer 1 at the outlet is 72.4°C.

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Abstract

The invention discloses a thermal insulation device for belt type polymerization. The thermal insulation device is arranged above a polymer, and comprises a drive wheel, a driven wheel, a conveyor belt arranged on the drive wheel and the driven wheel in a driving way, a pressing mechanism arranged in a liftable way between the drive wheel and the driven wheel and used for downward pressing the conveyor belt on the upper surface of the polymer, wherein the conveyor belt comprises an inner layer conveyor belt, an outer layer conveyor belt and a thermal insulation interlayer clamped between the inner layer conveyor belt and the outer layer conveyor belt. The thermal insulation device for belt type polymerization is suitable for continuously producing the polymer, the conveyor belt with the thermal insulation interlayer is pressed on the upper surface of the polymer, and can prevent the polymer from making contact with external gas in a thermal insulation process and can greatly reduce evaporative heat loss of the polymer, the thermal insulation effect is good, a high temperature can be kept in the polymer, polymerization reaction can be more sufficient, and the aim of reducing the content of residual monomers is achieved.

Description

technical field [0001] The invention relates to a heat preservation device for belt polymerization. Background technique [0002] During the polymerization process, the aging of the polymer is an essential process, and if the reaction is not complete, the residual monomer content will be high. Belt polymerization has the advantages of continuous production, but the disadvantage is that the heat dissipation area is large and the heat loss of polymerization is serious. Therefore, belt polymerization requires a heat preservation device that can continuously keep the heat of polymerization in the polymer body, maintain a higher temperature, and continuously decompose the initiator, so that the polymerization reaction can be more complete and the residual monomer content can be reduced. . [0003] The heat preservation device currently used is generally to add a heat preservation cover on the top of the polymer, and the heat preservation effect of the heat preservation cover is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/01
CPCC08F2/01
Inventor 方叔迈何国锋张莉王勤陈斌汤玉业张璐
Owner JIANGSU FEYMER TECH
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