CN209537180U - Evaporation of chlorine-alkali process condensate water reclaiming system - Google Patents
Evaporation of chlorine-alkali process condensate water reclaiming system Download PDFInfo
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- CN209537180U CN209537180U CN201920188011.5U CN201920188011U CN209537180U CN 209537180 U CN209537180 U CN 209537180U CN 201920188011 U CN201920188011 U CN 201920188011U CN 209537180 U CN209537180 U CN 209537180U
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Abstract
The utility model discloses a kind of evaporation of chlorine-alkali process condensate water reclaiming systems comprising electrolytic alkali storage tank, heat exchanger, evaporator, resin tower, condensate water pot, pure water tank and electrolytic cell；The cold medium import of the discharge port and heat exchanger of electrolytic alkali storage tank connects, the cold medium outlet of heat exchanger is connect with the feed inlet of evaporator, the condensate outlet of evaporator and the thermal medium inlet of heat exchanger connect, and the thermal medium outlet of heat exchanger and the lye import of resin tower connect.The utility model can realize the heat recovery of the condensed water generated to evaporator, and realization is energy-saving, improve the economic benefit of chlor-alkali enterprises；Recycling condensing water can be made into electrolytic cell, be not necessarily to outlet, both realized the recycling of water resource, and avoided environmental pollution caused by condensed water outlet, be conducive to energy-saving and emission-reduction, clean manufacturing, while greatly reducing the dosage of pure water, reduce the operating pressure of Purified Water Station.
Description
Technical field:
The utility model relates to a kind of technical field of chlor-alkali industry more particularly to a kind of evaporation of chlorine-alkali process condensate water reuses
System.
Background technique:
In chlor-alkali enterprises, during obtaining various concentration caustic soda product, vaporising device and condenser can be generated largely
Condensed water, these condensed water typical temperatures have the characteristics that iron, calcium, magnesium, silicone content are high up to 80 DEG C or so, generally can not
It is utilized effectively as wastewater disposition, pollution is caused to environment, and contain in meeting waste water resource and condensed water
A small amount of lye is unfavorable for energy-saving and emission-reduction, clean manufacturing.
And simultaneously, in the process of running, ion-exchange membrane electrolyzer produces alkali concentration directly to be reached the ion-exchange membrane electrolyzer of chlor-alkali plant
To 32%, stablize to maintain electric tank cathode room to export concentration of lye, and take away the heat of electrolyte bath generation, it is necessary into
Portion of pure water is added in the circulation fluid of electric tank cathode room as dilution medium.Under heavy-duty service state, electrolysis with ion-exchange film
Produce pure water amount about 50m needed for electric tank cathode during 32% alkali3/ h brings great operating pressure to Purified Water Station.
But it since temperature and conductivity of the technique to the dilution medium into electrolytic cell have strict demand, is wanted if not meeting
Ionic membrane can be destroyed by asking, and condensed water is caused to be difficult to reuse.
Utility model content:
The purpose of this utility model is to provide a kind of energy-saving and emission-reduction, the evaporation of chlorine-alkali process condensate water reuse of clean manufacturing
System.
The utility model is implemented by following technical solution:
Evaporation of chlorine-alkali process condensate water reclaiming system comprising electrolytic alkali storage tank, heat exchanger, evaporator, resin tower, condensation
Water pot, pure water tank and electrolytic cell；
The discharge port of the electrolytic alkali storage tank is connect with the cold medium import of the heat exchanger, the cold medium of the heat exchanger
Outlet is connect with the feed inlet of the evaporator, and the thermal medium inlet of the condensate outlet of the evaporator and the heat exchanger connects
It connects, the thermal medium outlet of the heat exchanger and the lye import of resin tower connect, the liquid outlet of the resin tower and the pure water
The water outlet of tank is connect with the water inlet of the condensate water pot, the cathode of the water outlet of the condensate water pot and the electrolytic cell
The connection of room water inlet；
It is equipped with small pump and water compensating valve on the pipeline for connecting the pure water tank and the condensate water pot, in the resin tower
It is equipped with pH sensor, conductivity gauge and water injection valve at liquid outlet, liquidometer is equipped in the condensate water pot, it is described cold connecting
The pipeline of condensate tank and the electrolytic cell is equipped with water outlet pump.
Further, temperature sensor is equipped in the condensate water pot.
It further, further include pressure release branch, the connection condensate water pot and the electricity in the water outlet pump rear end
The pipeline for solving slot is equipped with pressure sensor, described in the connection of the water inlet end of the pressure release branch and the pressure sensor rear end
Condensate water pot is connected to the pipeline of the electrolytic cell, and the water outlet of the pressure release branch and the water inlet of the condensate water pot connect
It connects, relief valve is equipped on pressure release branch road.
The advantages of the utility model:
The utility model can to evaporator generate condensed water heat carry out recycling and to enter heat exchanger in electrolysis
32% alkali in alkali storage tank is preheated, and energy consumption when can reduce evaporator operation is preheated to 32% alkali, and after heat exchange
Condensed water can meet the temperature index of the dilution medium of electrolytic cell；Resin tower can make condensed water reach the dilution medium of electrolytic cell
Technic index；Pure water tank both can be used as the moisturizing of condensate water pot, can also be used as the tempered water of condensate water pot；Pressure release branch can
The pressure for reducing pipeline, guarantees the stable operation of pipeline.
The utility model can realize the heat recovery of the condensed water generated to evaporator, and realization is energy-saving, improve chlorine
The economic benefit of alkali enterprise；Recycling condensing water can be made into electrolytic cell, be not necessarily to outlet, both realized the recycling of water resource, and avoided
Environmental pollution caused by condensed water is exclusive is conducive to energy-saving and emission-reduction, clean manufacturing, while greatly reducing the dosage of pure water, drops
The low operating pressure of Purified Water Station.
Detailed description of the invention:
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the system structure diagram of the present embodiment.
In figure: electrolytic alkali storage tank 1, heat exchanger 2, evaporator 3, relief valve 4, resin tower 5, condensate water pot 6, pure water tank 7, electricity
Solve slot 8, pressure release branch 9, small pump 10, water compensating valve 11, pH sensor 12, conductivity gauge 13, water injection valve 14, pressure sensor 15,
Liquidometer 16, water outlet pump 17, temperature sensor 18.
Specific embodiment:
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1:
Evaporation of chlorine-alkali process condensate water reclaiming system as shown in Figure 1 comprising electrolytic alkali storage tank 1, heat exchanger 2, evaporation
Device 3, resin tower 5, condensate water pot 6, pure water tank 7 and electrolytic cell 8；
The discharge port of electrolytic alkali storage tank 1 is connect with the cold medium import of heat exchanger 2, the cold medium outlet and steaming of heat exchanger 2
The feed inlet connection of device 3 is sent out, the condensate outlet of evaporator 3 is connect with the thermal medium inlet of heat exchanger 2, and the heat of heat exchanger 2 is situated between
Matter outlet is connect with the lye import of resin tower 5, the water outlet of the liquid outlet of resin tower 5 and pure water tank 7 with condensate water pot 6
Water inlet connection, the water outlet of condensate water pot 6 are connect with the cathode chamber water inlet of electrolytic cell 8；
It is equipped with small pump 10 and water compensating valve 11 on the pipeline of connection pure water tank 7 and condensate water pot 6, goes out liquid in resin tower 5
It is equipped with pH sensor 12, conductivity gauge 13 and water injection valve 14 at mouthful, liquidometer 16 is equipped in condensate water pot 6, is condensed in connection
The pipeline of water pot 6 and electrolytic cell 8 is equipped with water outlet pump 17.
Temperature sensor 18 is equipped in condensate water pot 6.
The present embodiment further includes pressure release branch 9, in the pipeline of the connection condensate water pot 6 and electrolytic cell 8 of 17 rear end of water outlet pump
It is equipped with pressure sensor 15, the water inlet end of pressure release branch 9 and the connection condensate water pot 6 and electrolytic cell of 15 rear end of pressure sensor
8 pipeline connection, the water outlet of pressure release branch 9 are connect with the water inlet of condensate water pot 6, and relief valve is equipped on pressure release branch 9
4。
In the present embodiment, using condensed water that evaporator 3 generates as thermal medium enter in heat exchanger 2 with electrolytic alkali storage tank 1
32% interior alkali exchanges heat, and realizes the purpose preheated to 32% alkali for entering evaporator 3, not only can be to the heat of condensed water
Amount recycled, 32% alkali preheat can reduce evaporator 3 run when energy consumption, realize it is energy-saving, and heat exchange after
Condensed water temperature can meet electrolytic cell 8 dilution medium temperature index.Through heat exchanger 2 cooling after condensed water first into
Enter resin tower 5, condensed water is handled using chelating resin in resin tower 5, by the iron in alkaline condensed water, calcium, magnesium, silicon member
The technic index that the content of element reaches the dilution medium of electrolytic cell 8 enters condensate water pot 6 later.It is set at 5 liquid outlet of resin tower
The conductivity gauge 13 set can to resin tower 5 water outlet further progress detection, such as be still unsatisfactory for electrolytic cell 8 dilution medium technique
Index, then water injection valve 14 is in close state；The pH sensor 12 being arranged at 5 liquid outlet of resin tower, can be to the PH of condensed water
Value is detected, and then may be that caused by evaporator 3 leaks, can mention when the pH value detected is higher than the pH value of setting
The staff that wakes up overhauls evaporator 3, and evaporation efficiency is low, it is energy-saving to be unfavorable for caused by avoiding because of the leakage of evaporator 3
It happens；The liquidometer 16 being arranged in condensate water pot 6 can detect the level condition in condensate water pot 6, when detecting
When the liquid level data of condensate water pot 6 is lower than the minimum liquid level value set, water compensating valve 11 is opened, starts small pump 10, by pure water tank 7
Moisturizing is carried out for condensate water pot 6；When the liquid level data for detecting condensate water pot 6 is higher than the highest level value of setting, closes and mend
Water valve 11 and water injection valve 14 stop small pump 10, prevent condensate water pot 6 from occurring excessive.The temperature sensing being arranged in condensate water pot 6
Device 18 can further detect the water temperature in condensate water pot 6, when the temperature value that the water temperature detected is higher than setting is electrolysed
When the temperature index of the dilution medium of slot 8, water compensating valve 11 is opened, starts small pump 10, it is mixed by the pure water and condensed water of supplement
Conjunction cools down.Pressure sensor 15 can detect connection condensate water pot 6 with the pressure on the pipeline of electrolytic cell 8, work as inspection
When the pressure value measured is higher than the line pressure value of setting, relief valve 4 is opened, makes a part water outlet of condensate water pot 6 again through letting out
Pressure branch 9 is back in condensate water pot 6, and then can reduce the pressure of pipeline, guarantees the stable operation of pipeline.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. evaporation of chlorine-alkali process condensate water reclaiming system, which is characterized in that it includes electrolytic alkali storage tank, heat exchanger, evaporator, tree
Rouge tower, condensate water pot, pure water tank and electrolytic cell；
The discharge port of the electrolytic alkali storage tank is connect with the cold medium import of the heat exchanger, the cold medium outlet of the heat exchanger
It being connect with the feed inlet of the evaporator, the condensate outlet of the evaporator is connect with the thermal medium inlet of the heat exchanger,
The thermal medium outlet of the heat exchanger is connect with the lye import of the resin tower, the liquid outlet of the resin tower and the pure water
The water outlet of tank is connect with the water inlet of the condensate water pot, the cathode of the water outlet of the condensate water pot and the electrolytic cell
The connection of room water inlet；
It is equipped with small pump and water compensating valve on the pipeline for connecting the pure water tank and the condensate water pot, goes out liquid in the resin tower
It is equipped with pH sensor, conductivity gauge and water injection valve at mouthful, liquidometer is equipped in the condensate water pot, is connecting the condensed water
The pipeline of tank and the electrolytic cell is equipped with water outlet pump.
2. evaporation of chlorine-alkali process condensate water reclaiming system according to claim 1, which is characterized in that in the condensate water pot
It is interior to be equipped with temperature sensor.
3. evaporation of chlorine-alkali process condensate water reclaiming system according to claim 1, which is characterized in that it further includes pressure release branch
Road is equipped with pressure sensor on the connection condensate water pot of the water outlet pump rear end and the pipeline of the electrolytic cell, described
The water inlet end of pressure release branch is connected to the connection condensate water pot of the pressure sensor rear end with the pipeline of the electrolytic cell,
The water outlet of the pressure release branch is connect with the water inlet of the condensate water pot, and relief valve is equipped on pressure release branch road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920188011.5U CN209537180U (en) | 2019-02-01 | 2019-02-01 | Evaporation of chlorine-alkali process condensate water reclaiming system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920188011.5U CN209537180U (en) | 2019-02-01 | 2019-02-01 | Evaporation of chlorine-alkali process condensate water reclaiming system |
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| CN209537180U true CN209537180U (en) | 2019-10-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981457A (en) * | 2021-02-04 | 2021-06-18 | 广西田东锦盛化工有限公司 | Pure water recycling device in chlor-alkali production |
-
2019
- 2019-02-01 CN CN201920188011.5U patent/CN209537180U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112981457A (en) * | 2021-02-04 | 2021-06-18 | 广西田东锦盛化工有限公司 | Pure water recycling device in chlor-alkali production |
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