Device for preparing high-viscosity polyvinyl alcohol resin solution

A polyvinyl alcohol resin, high viscosity technology, used in mixers with rotating stirring devices, dissolving, dissolving and other directions, can solve the problem of "holding the shaft" concentration, unevenness and other problems, achieve uniform heating temperature, reduce product consumption, prevent The effect of high pressure gas leakage

Inactive Publication Date: 2014-04-02
安徽皖维膜材料有限责任公司
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Problems solved by technology

[0003] In order to solve the shortcomings of the above-mentioned prior art, the present invention provides a device for preparing high-viscosity polyvinyl alcohol resin solution, in order to solve the problem of "axle-holding" and The problem of uneven concentration, to achieve continuous production of high-concentration, high-viscosity PVA solution

Method used

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  • Device for preparing high-viscosity polyvinyl alcohol resin solution

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Embodiment Construction

[0024] Such as figure 1 As shown, the device for preparing a high-viscosity polyvinyl alcohol resin solution in this embodiment includes a cylinder unit, a stirring unit and an instrument control detection unit;

[0025] The cylinder unit is a pressure vessel in which the upper end of a cylinder 2 is connected with the upper head 14 through the equipment flange 5, and the lower end is sealed by the lower head 18; a and water inlet b; the bottom of the lower head 18 is provided with a discharge port e; on the side wall of the cylinder 2, the outer surface of the upper head 14 and the outer surface of the lower head 18, a heating medium is respectively provided Jacket 3 for mass circulation flow;

[0026] The stirring unit is connected by the motor 9 above the cylinder unit through the reducer 8 to the hollow stirring shaft 1 extending into the cylinder 2 to drive the agitator 15 inside the cylinder 2 to rotate;

[0027] The connection between the hollow stirring shaft 1 and t...

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Abstract

The invention discloses a device for preparing a high-viscosity polyvinyl alcohol resin solution. The device is characterized by comprising a barrel unit, a stirring unit and an instrument-controlled detection unit, wherein the barrel unit is a pressure container; a jacket for circularly flowing a heat transfer medium is arranged on the outer surface of the barrel unit; the stirring unit drives a stirrer inside the barrel to rotate by connecting a motor above the barrel unit with a hollow stirring shaft stretching into the barrel through a speed reducer; a junction of the hollow stirring shaft and an upper sealing head is sealed by a double-end surface mechanical sealing structure for a kettle; the instrument-controlled detection unit comprises a thermometer, a viewing window and a liquid level detector which are arranged on the barrel, and a pressure meter and a safety valve which are arranged at a gas inlet of the upper sealing head. The device can prepare the high-viscosity polyvinyl alcohol resin solution from a high-polymerization polyvinyl alcohol resin raw material under a high-temperature and high-pressure condition; and the concentration uniformity of the solution in a high viscosity state can be ensured.

Description

technical field [0001] The invention relates to a device for preparing polyvinyl alcohol (PVA) resin solution, in particular to a dissolving device for realizing high-concentration and high-viscosity PVA solution by means of high temperature and high pressure. Background technique [0002] PVA is a water-soluble polymer material with a wide range of uses. It can be used as raw material to produce latex, PVB resin, PVA fiber, PVA film and other products. The above-mentioned products generally use PVA resin with a degree of polymerization below 2000, and the concentration of the PVA solution prepared by it is mostly below 20%, and the solution viscosity is 3000-6000CPS. And at present, the raw material of a lot of products selects the PVA resin of polymerization degree more than 2600 for use, the required solution concentration is more than 20%, and the viscosity of the solution is as high as 5000-150000CPS. Using some current PVA resin dissolving devices, there will be long ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F1/00B01F7/18B01F15/06
Inventor 吴福胜许献智李启东孙先武钱光海汪晓飞徐学斌
Owner 安徽皖维膜材料有限责任公司
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