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A kind of energy supply system of epichlorohydrin saponification process

An energy supply system, epichlorohydrin technology, applied in the chemical industry, organic chemistry, sustainable manufacturing/processing, etc., can solve the problems of large saponification waste water, heat energy cannot be comprehensively utilized, and the connection is not closely connected, so as to save production cost, to achieve optimal utilization, to achieve the effect of energy

Active Publication Date: 2017-04-05
CHINA TIANCHEN ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is to overcome the technical problem that the various sections of the industrial production of epichlorohydrin in the prior art are not closely connected, resulting in that the heat energy cannot be comprehensively utilized in the production process, and a large amount of saponification waste water is generated, and to provide an effective recycling method. Utilize a large amount of waste heat generated by the remaining epichlorohydrin production sections before the saponification reaction as an energy supply system for the saponification process, to maximize the connection between each production section of epichlorohydrin and to maximize energy saving and emission reduction

Method used

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  • A kind of energy supply system of epichlorohydrin saponification process
  • A kind of energy supply system of epichlorohydrin saponification process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The high-specification steam condensate (5) from the epichlorohydrin main production process enters the high-temperature condensate heat exchanger (1) and exchanges heat with the cold material from the low-temperature condensate heat exchanger (2). The steam condensate (5) enters the condensate recovery system (6) after condensation, and the hot stream generated during the heat exchange process is sent to the steam generating device (3); the low-specification steam condensate ( 7) Exchange heat with the condensate from the steam generating device (3), and send a part of the low-standard steam condensate (7) to the lime emulsification ash section (8) after heat exchange to a certain temperature, and the other part is used as a high-temperature condensate for heat exchange The cold material input from the device (1); the steam generating device (3) de-flashes the raw steam (10), and heats the hot stream from the high-temperature condensate heat exchanger (1) to generate st...

Embodiment 2

[0022] Taking the scale of an epichlorohydrin plant with an annual output of 30,000 tons as an example, the main production process of 30,000 tons / year epichlorohydrin steam produces high-standard steam with a condensate volume of 28-30t / h (about 144°C), and the auxiliary production process The amount of low-specification steam condensate produced is 17t / h (about 70°C), and the steam consumption of traditional saponification process is about 10t / h (5barA).

[0023] After adopting the energy supply system of this patent, the steam used in the epichlorohydrin production equipment of the same scale is 10t / h (10barA) steam, and the high-standard steam condensate produced by the epichlorohydrin main production process is 4barA as an example. The heat recovered by the condensate heat exchanger is equivalent to 1t / h of 5barA steam; based on the water volume of 7t / h (88°C) in the deashing section, the heat recovered by the low-temperature condensate heat exchanger is equivalent to 0.3t...

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Abstract

An energy supply system of an epoxy chloropropane saponification technology comprises a heat exchange device and a steam generating device, wherein the heat exchange device is connected with the steam generating device through a pipeline; the heat exchange device is composed of a high-temperature condensation liquid heat exchanger and a low-temperature condensation liquid heat exchanger; and the steam generating device comprises a steam generator and a steam pocket. According to the scheme, the technical problems that in the prior art, all sections of epoxy chloropropane industrial production are not linked closely, and consequently, in the production process, heat energy cannot be comprehensively utilized, and a large amount of saponification waste water is generated are solved. The energy supply system which can effectively use a large amount of waste heat generated by the rest of epoxy chloropropane production sections before saponification for energy supply of the saponification technology is provided, the link of the epoxy chloropropane production sections is strengthened to the greatest extent, and meanwhile energy saving and emission reduction can be achieved to the greatest extent.

Description

technical field [0001] The invention relates to an energy supply system in the production process of epichlorohydrin, in particular to an energy supply system in the saponification process of epichlorohydrin. Background technique [0002] Epichlorohydrin, namely 3-chloro-1,2-epoxypropane (epi-chlorohydrin), also known as epichlorohydrin, is an important organic chemical raw material and fine chemical product, which can be used as a raw material to make multifunctional Epoxy resin is also widely used in medicine, pesticides, adhesives, ion exchange resins, plasticizers, cellulose chemical stabilizers, surfactants, chemical dyes and water treatment agents. [0003] At present, the production methods of epichlorohydrin mainly include propylene high-temperature chlorination method, propylene acetate method and glycerin chlorination method. Saponification is an indispensable step in the production process of epichlorohydrin. In order to ensure the smooth progress of saponificatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B1/16F22B3/04C07D303/08C07D301/26
CPCY02P20/10
Inventor 闫伟赵敏伟杨克俭李荣梁军湘兰杰周利波吕威鹏郭启迪闫哲吴凡龙滢肖辉张二涛王志明王宪
Owner CHINA TIANCHEN ENG