PVB production process based on plate heat exchanger cooling

A technology of plate heat exchanger and production process, which is applied in the direction of indirect heat exchanger, heat exchanger type, lighting and heating equipment, etc., can solve the problems of long process cycle, unable to improve production cycle and production efficiency, and achieve quality improvement , Shorten the production cycle and reduce the cost

Pending Publication Date: 2022-01-18
大冶海通热工技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a PVB production process based on plate heat exchanger cooling, which solves the problem that the cooling tower cooling method leads to a relatively long process cycle, cannot be cooled quickly, and cannot improve the production cycle and production efficiency. question

Method used

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  • PVB production process based on plate heat exchanger cooling

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Effect test

Embodiment 1

[0030] The invention provides a technical solution: a PVB production process based on plate heat exchanger cooling, which specifically includes the following steps:

[0031] S1. Material preparation, pure water, butyraldehyde, plate heat exchanger, pre-reactor, centrifugal dryer, storage tank, catalyst, trimmer and winder;

[0032] S2, product PVA, at first the polyvinyl alcohol that PVB resin flashiness produces is added the butyraldehyde of emulsification, makes catalyst modification PVA with a small amount of hydrochloric acid, obtains PVB resin and by-product water, makes PVB resin precipitate in water;

[0033] S3, the plate heat exchanger is installed, and then a layer of hollow pipes is put on the cold and hot pipes on the surface of the plate heat exchanger, and an air pump is arranged at the pipes, and a filter screen is arranged at the outlet of the hollow pipes;

[0034] S4. Heating and dissolving. In the process of dissolving, pure water is used as a solvent, which...

Embodiment 2

[0047] The invention provides a technical solution: a PVB production process based on plate heat exchanger cooling, which specifically includes the following steps:

[0048] S1. Material preparation, pure water, butyraldehyde, plate heat exchanger, pre-reactor, centrifugal dryer, storage tank, catalyst, trimmer and winder;

[0049] S2, product PVA, at first the polyvinyl alcohol that PVB resin flashiness produces is added the butyraldehyde of emulsification, makes catalyst modification PVA with a small amount of hydrochloric acid, obtains PVB resin and by-product water, makes PVB resin precipitate in water;

[0050] S3, the plate heat exchanger is installed, and then a layer of hollow pipes is put on the cold and hot pipes on the surface of the plate heat exchanger, and an air pump is arranged at the pipes, and a filter screen is arranged at the outlet of the hollow pipes;

[0051] S4. Heating and dissolving. In the process of dissolving, pure water is used as a solvent, which...

Embodiment 3

[0064] The invention provides a technical solution: a PVB production process based on plate heat exchanger cooling, which specifically includes the following steps:

[0065] S1. Material preparation, pure water, butyraldehyde, plate heat exchanger, pre-reactor, centrifugal dryer, storage tank, catalyst, trimmer and winder;

[0066] S2, product PVA, at first the polyvinyl alcohol that PVB resin flashiness produces is added the butyraldehyde of emulsification, makes catalyst modification PVA with a small amount of hydrochloric acid, obtains PVB resin and by-product water, makes PVB resin precipitate in water;

[0067] S3, the plate heat exchanger is installed, and then a layer of hollow pipes is put on the cold and hot pipes on the surface of the plate heat exchanger, and an air pump is arranged at the pipes, and a filter screen is arranged at the outlet of the hollow pipes;

[0068] S4. Heating and dissolving. In the process of dissolving, pure water is used as a solvent, which...

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Abstract

The invention discloses a PVB production process based on plate heat exchanger cooling. A dissolved solvent is connected with a hollow pipe through a guide pipe, an air pump arranged on the surface of the hollow pipe is started to convey the solvent into the hollow pipe, and when cooling is needed, the plate heat exchanger is started; according to the working principle of the plate heat exchanger, the heat exchange is carried out through thin rectangular channels formed among various plate sheets and half sheets, low temperature generated by the plate heat exchanger can be dissipated into the hollow pipes connected with the surfaces of the cold and hot pipes in a sleeving mode, cold and hot exchange is carried out on a heated solvent through the low temperature, and the cooling effect is achieved. The filter screen arranged at the discharge hole of the hollow pipe is used for filtering, and the impurities in the solvent are taken out. The invention relates to the technical field of high polymer materials. According to the PVB producer based on plate heat exchanger cooling, the problems that the process cycle is long, cooling cannot be conducted quickly, the production cycle cannot be prolonged, and the production efficiency cannot be improved due to the cooling mode of a cooling tower are solved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PVB production process based on plate heat exchanger cooling. Background technique [0002] PVB is soluble in methanol, n-propanol, isopropanol, n-pentanol, benzyl alcohol, butanol, diacetone alcohol, propylene glycol ether / methyl ether / propyl ether, acetone, methyl ethyl ketone, cyclohexanone, methylene chloride, chloroform, Methyl acetate, ethyl acetate, butyl acetate, acetic acid, etc. Has excellent softness and flexibility. [0003] Among them, the PVB production process uses the traditional cooling device to carry out spray cooling through the cooling tower. Although this method can achieve the cooling effect, it needs to separate the granular PVB from the water after cooling, resulting in a relatively long process cycle. It cannot be cooled quickly, and the production cycle and production efficiency cannot be improved. Contents of the invention [0004] (1)...

Claims

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Application Information

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IPC IPC(8): C08F8/28C08F16/06F28D9/00
CPCC08F8/28F28D9/00C08F16/06
Inventor 陈光新周巍石文磊叶正青郭学军廖伟
Owner 大冶海通热工技术有限公司
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