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Comprehensive utilization device and method for waste in PVB resin production process

A production process and waste technology, applied in chemical instruments and methods, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as the impact of condensation process and product quality, and achieve steam saving, The effect of reducing evaporation steam consumption and avoiding corrosion

Pending Publication Date: 2021-02-12
ANHUI WANWEI UPDATED HIGH TECH MATERIAL CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

However, the process requirements for the stripping operation during the reaction will affect the condensation process of PVB, thus affecting the product quality

Method used

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  • Comprehensive utilization device and method for waste in PVB resin production process

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Embodiment 1

[0035] like figure 1 , the comprehensive utilization device of the waste in a kind of PVB resin production process of the present embodiment, comprises waste collection tank 1, feed tank 2, lye tank 3, feed preheater 4, butyraldehyde removal tower 5, Condenser 6, phase separator 7, reflux tank 8, butyraldehyde storage tank 9, kettle liquid collection tank 10, concentration device 11, evaporation device 12 and crystallization device 13.

[0036] The material outlet of the waste collection tank 1 is connected to the material inlet of the feed tank 2; the material outlet of the feed tank 2 is connected to the first material inlet of the feed preheater 4; the material outlet of the lye tank 3 is connected to the inlet in parallel. The material inlet of feed tank 2 and the first material inlet of feed preheater 4 .

[0037] The first material outlet of the feed preheater 4 is connected to the first material inlet of the butyraldehyde removal tower 5; the discharge port of the buty...

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Abstract

The invention discloses a comprehensive utilization device and method for waste in a PVB resin production process. The process route is as follows: after the pH of waste is adjusted step by step through a waste collection tank, a feeding tank and an alkali liquor tank, the waste is heated through a feeding preheater, the heated waste is conveyed to a butyraldehyde removal tower for treatment, thegas evaporated from the butyraldehyde removal tower is treated by a condenser and a phase splitter to obtain oil-phase butyraldehyde and water-phase waste, the water-phase waste returns to the butyraldehyde removal tower to be continuously treated, and the kettle liquid of the butyraldehyde removal tower is subjected to heat exchange by the feeding preheater and then enters a concentration device,an evaporation device and a crystallization device to be treated to obtain a sodium chloride solid. According to the method disclosed by the invention, the complete recycling of water resources and the complete regeneration of industrial wastes are realized, and the requirements of green development and high-quality development are met.

Description

technical field [0001] The invention belongs to the field of waste utilization, and in particular relates to a comprehensive utilization device and method for waste in the PVB resin production process. Background technique [0002] Polyvinyl butyral (PVB) resin has the advantages of transparency, cold resistance, water resistance, film forming and impact resistance, and has a wide range of applications. Its main scale applications include the manufacture of safety glass, coatings, etc. , ink, adhesives, ceramic decals, paper, photovoltaic cell film, etc. With the advancement of technology, the application fields of PVB for membranes continue to expand, ranging from aerospace to daily necessities for ordinary people, PVB for membranes can be seen everywhere. In the industry, the PVB finished product is mainly produced through the process of condensation of polyvinyl alcohol and n-butyraldehyde through steps of dissolution, condensation, washing and drying. [0003] The wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F103/38
CPCC02F1/04C02F1/66C02F2103/38
Inventor 柳巨澜许宏平沈瑞陈建旭朱宝华徐红波田宗杰张晓峰欧阳孔波江成戴伟王绍娟
Owner ANHUI WANWEI UPDATED HIGH TECH MATERIAL CO LTD
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