CN209468145U - A kind of chlor-alkali multiple-effect evaporation condensation water recovery device - Google Patents
A kind of chlor-alkali multiple-effect evaporation condensation water recovery device Download PDFInfo
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- CN209468145U CN209468145U CN201822205440.7U CN201822205440U CN209468145U CN 209468145 U CN209468145 U CN 209468145U CN 201822205440 U CN201822205440 U CN 201822205440U CN 209468145 U CN209468145 U CN 209468145U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model belongs to chlor-alkali preparation facilities technical field more particularly to a kind of chlor-alkali multiple-effect evaporation condensation water recovery device.Including 1st effective evaporator, 2nd effect evaporator, triple effect evaporator, surface condenser, cryogenic condensation water pot, catholyte head tank and electrolytic cell；After 1st effective evaporator is connected to boiler steam pipe, then successively it is connected to 2nd effect evaporator, triple effect evaporator, surface condenser, cryogenic condensation water pot；2nd effect evaporator, triple effect evaporator are connected to cryogenic condensation water pot, cryogenic condensation water pot is connected to the first charging aperture of catholyte head tank, electrolytic cell is connected to catholyte head tank discharge port, meanwhile, the second charging aperture of catholyte head tank is connected to lye circulating tank.The utility model is being used to do the charging water supply of ionic membrane cathode after being first used to be concentrated by evaporation high concentration alkali finished product for boiler high temperature steam, improve the utilization rate of steam, improved water quality, product quality, ion-exchange membrane electrolyzer indices are stablized, and have achieved the purpose that save water and energy.
Description
Technical field
The utility model belongs to chlor-alkali preparation facilities field more particularly to a kind of chlor-alkali industry multiple-effect evaporation secondary steam is cold
Condensate recyclable device.
Background technique
Water scarcity situation is more and more severeer at present, and consumption reduction of saving water and energy becomes the importance that enterprise proposes effect technological transformation.
In domestic chlor-alkali industry multiple-effect evaporation alkali-making process, secondary steam condensate used is generally used for salt dissolving.Existing triple effect vacuum is steamed
Alkaline device is sent out, is 200,000 tons/year of calculating with product (50%NaOH) scale, generating 65 DEG C of secondary steam condensed waters every year is about
220000 tons, this partial condensation water water quality is fine, and impurity is less, and pH value is about in 8-10, if more wasting for salt dissolving, and in ion
In film production of caustic soda technique, every electric tank cathode charging needs the pure water of 3m3/h flow, and therefore, the utility model is cold to this
Condensate has re-started recycling, and devises corresponding recyclable device.
Utility model content
For above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of chlor-alkali multiple-effect evaporations
Condensate water recovery device.The recyclable device of the utility model design can make the secondary steam condensed water of multiple-effect evaporation obtain whole
It recycles, and obtained condensation water quality stabilizing, ionic membrane caustic soda product with stable quality, ion-exchange membrane electrolyzer indices are steady
It is fixed.
To achieve the above object, specifically, the utility model discloses following technical proposals:
A kind of chlor-alkali multiple-effect evaporation condensation water recovery device, comprising: 1st effective evaporator, 2nd effect evaporator, triple effect evaporator,
Surface condenser, cryogenic condensation water pot, catholyte head tank, electrolytic cell, lye circulating tank.
After the 1st effective evaporator is connected to boiler steam pipe, then in order with 2nd effect evaporator, triple effect evaporator, table
Face condenser, the connection of cryogenic condensation water pot；The 2nd effect evaporator, triple effect evaporator are connected to cryogenic condensation water pot, described
Cryogenic condensation water pot is connected to the first charging aperture of catholyte head tank, and electrolytic cell is connected to the discharge port of catholyte head tank,
Meanwhile the second charging aperture of catholyte head tank is connected to lye circulating tank.
Further, the 1st effective evaporator, 2nd effect evaporator, triple effect evaporator together constitute multi-effect evaporating device,
Multiple-effect evaporation is using the secondary steam of preceding effect as the cascade evaporation device of next effect heating steam.
After high-temperature steam in the Boiler Steam pipe enters 1st effective evaporator, changed with the lye of low concentration therein
Moisture in lye is evaporated by heat, and high-temperature steam separately does him from 1st effective evaporator discharge after being condensed and uses；From effect evaporator
In lye in a water vapour being evaporated enter 2nd effect evaporator, exchange heat with the lye of low concentration therein, will
Moisture in lye is evaporated (secondary vapor), enters cryogenic condensation water pot after one time water vapour is condensed；And secondary water
Steam enters triple effect evaporator, continues and the lye of low concentration therein exchanges heat, and the moisture in lye is evaporated (three
Secondary vapor), secondary water vapour also enters cryogenic condensation water pot after being condensed；After vapor enters surface condenser condensation three times
Into cryogenic condensation water pot；It collects after the condensed water in cryogenic condensation water pot enters catholyte head tank, and likewise enters yin
The lye raw material of pole liquid head tank mixes, and then proceedes to electrolytic cell, finally obtains product caustic soda.
By this recyclable device of the utility model, the high-temperature steam in boiler can be not only recycled,
And two kinds of finished products can be produced simultaneously in this set of device, the first is in multi-effect evaporating device, by low concentration
The product caustic soda of high concentration (50wt.% or so) can be obtained after the spent liquor evaporation concentration of (32wt.%)；Second is in electrolytic cell
The product caustic soda obtained after 7 electrolysis.
Further, the surface condenser is generally dividing wall type condenser, for example, shell and tube condenser, cooling water exists
Flowing in pipe, steam are condensed in tube outer surface.
Further, the lye is sodium hydroxide.
Compared with prior art, the utility model obtains following technical effect:
(1) original secondary steam condensed water is used in the design of primary brine salt dissolving, since this partial condensation water is clean
Degree is high, and water temperature is also higher, more wastes for salt dissolving, and the utility model is designed to first for being concentrated by evaporation high concentration alkali
It supplies water after finished product for doing the charging of ionic membrane cathode, not only increases the utilization rate of steam, and improved water stabilization, from
Sub- film alkali product stay in grade, ion-exchange membrane electrolyzer indices are stablized, have achieved the purpose that save water and energy.
(2) this recyclable device of the utility model can not only be recycled the high-temperature steam in boiler, and
And two kinds of finished products can be produced simultaneously in this set of device.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural schematic diagram of the utility model chlor-alkali multiple-effect evaporation condensation water recovery device.
Marking in attached drawing indicates: 1- 1st effective evaporator, 2- 2nd effect evaporator, 3- triple effect evaporator, 4- surface condenser, 5-
Cryogenic condensation water pot, 6- catholyte head tank, 7- electrolytic cell, 8- lye circulating tank, 1.1- high-temperature steam, 1.2- low concentration alkali
Liquid, 1.3- lye pump, 1.4- cooling water inlet, 1.5- cooling water outlet, 1.6- mono- imitate condensate pump.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, existing triple effect is evaporated in vacuo in alkaline device secondary steam condensed water for changing
Salt more wastes；To solve the above-mentioned problems, the utility model provides a kind of chlor-alkali multiple-effect evaporation condensation water recovery device, below
The utility model is described further in conjunction with the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, a kind of chlor-alkali multiple-effect evaporation condensation water recovery device, comprising: a kind of chlor-alkali multiple-effect evaporation condensation water
Recyclable device, comprising: 1st effective evaporator 1,2nd effect evaporator 2, triple effect evaporator 3, surface condenser 4, cryogenic condensation water pot 5,
Catholyte head tank 6, electrolytic cell 7, lye circulating tank 8.
After the 1st effective evaporator 1 is connected to boiler steam pipe, then in order with 2nd effect evaporator 2, triple effect evaporator
3, surface condenser 4, cryogenic condensation water pot 5 are connected to；The 2nd effect evaporator 2, triple effect evaporator 3 with cryogenic condensation water pot 5
Connection, the cryogenic condensation water pot 5 are connected to the first charging aperture of catholyte head tank 6, electrolytic cell 7 and catholyte head tank 6
Discharge port connection, meanwhile, the second charging aperture of catholyte head tank 6 is connected to lye circulating tank 8.
The 1st effective evaporator 1,2nd effect evaporator 2, triple effect evaporator 3 together constitute multi-effect evaporating device.
Embodiment 2
The application method of chlor-alkali multiple-effect evaporation condensation water recovery device described in embodiment 1 are as follows: in the Boiler Steam pipe
High-temperature steam 1.1 enter 1st effective evaporator 1 after, exchange heat with low-concentration alkali liquor 1.2 therein, by lye moisture steam
It issues (water vapour) and obtains high concentration alkali, high concentration alkali is sold after being discharged by lye pump 1.3 as finished product, and high temperature
Steam is discharged from 1st effective evaporator 1 by an effect condensate pump 1.6 after being condensed and separately does his use；Water vapour enters two effects and steams
Device 2 is sent out, exchanges heat with the lye of low concentration therein, the moisture in lye is evaporated (secondary vapor), a water
Steam enters cryogenic condensation water pot 5 after being condensed；And secondary vapor enters triple effect evaporator 3, continues and low concentration therein
Lye exchange heat, the moisture in lye is evaporated (vapor three times), secondary water vapour be condensed after also enter it is low
Warm condensate water pot 5；Vapor enters after surface condenser 4 condenses and enters cryogenic condensation water pot 5 three times；It collects in low temperature cold condensate
After condensed water in tank 5 enters catholyte head tank 6, mixed with the lye raw material for likewise entering catholyte head tank 6, then after
It is continuous to enter electrolytic cell 7, finally obtain product caustic soda.The surface condenser 4 is shell and tube condenser, and cooling water is from cooling water inlet
1.4 enter flowing in the pipe of condenser, are discharged from cooling water outlet 1.5, and steam is condensed in tube outer surface.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (3)
1. a kind of chlor-alkali multiple-effect evaporation condensation water recovery device characterized by comprising 1st effective evaporator, 2nd effect evaporator, three
Imitate evaporator, surface condenser, cryogenic condensation water pot, catholyte head tank and electrolytic cell；
After the 1st effective evaporator is connected to boiler steam pipe, then it is cold with 2nd effect evaporator, triple effect evaporator, surface in order
Condenser, the connection of cryogenic condensation water pot；The 2nd effect evaporator, triple effect evaporator are connected to cryogenic condensation water pot, the low temperature
Condensate water pot is connected to the first charging aperture of catholyte head tank, and electrolytic cell is connected to the discharge port of catholyte head tank, meanwhile,
The second charging aperture of catholyte head tank is connected to lye circulating tank.
2. chlor-alkali multiple-effect evaporation condensation water recovery device as described in claim 1, which is characterized in that the surface condenser is
Dividing wall type condenser.
3. chlor-alkali multiple-effect evaporation condensation water recovery device as described in claim 1, which is characterized in that the surface condenser is
Shell and tube condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822205440.7U CN209468145U (en) | 2018-12-25 | 2018-12-25 | A kind of chlor-alkali multiple-effect evaporation condensation water recovery device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822205440.7U CN209468145U (en) | 2018-12-25 | 2018-12-25 | A kind of chlor-alkali multiple-effect evaporation condensation water recovery device |
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| CN209468145U true CN209468145U (en) | 2019-10-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459270A (en) * | 2022-02-21 | 2022-05-10 | 重庆博张智能装备有限公司 | Heat recovery method and device in alkali making process |
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2018
- 2018-12-25 CN CN201822205440.7U patent/CN209468145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459270A (en) * | 2022-02-21 | 2022-05-10 | 重庆博张智能装备有限公司 | Heat recovery method and device in alkali making process |
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