CN218231928U - Flue gas waste heat condensate and chemical water replenishing system - Google Patents
Flue gas waste heat condensate and chemical water replenishing system Download PDFInfo
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- CN218231928U CN218231928U CN202222073459.7U CN202222073459U CN218231928U CN 218231928 U CN218231928 U CN 218231928U CN 202222073459 U CN202222073459 U CN 202222073459U CN 218231928 U CN218231928 U CN 218231928U
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Abstract
The utility model provides a flue gas waste heat condensed water and chemical water replenishing system, which belongs to the technical field of industrial water treatment and comprises a heat exchanger, wherein flue gas forms condensed water through the heat exchanger; the condensate water recovery tank is used for storing condensate water; the evaporation tower is used for evaporating and concentrating the concentrated water by utilizing the flue gas passing through the heat exchanger; the evaporation tower bottom pool is used for storing evaporated concentrated water; an electrochemical water treatment tank for chemically treating the concentrated water; the first circulating water pump pumps the concentrated water into the heat exchanger for heating; the waste heat of the flue gas is fully recycled for evaporation concentration, the problem of energy consumption of zero emission in the evaporation concentration link is solved to a great extent, automatic water supplement is realized, and the construction and operation cost for realizing zero emission is greatly reduced.
Description
Technical Field
The utility model relates to an industrial water treatment technical field particularly, relates to a flue gas waste heat condensate water and chemistry make-up water system.
Background
At present, the treatment of sewage such as electrodialysis concentrated water and the like in a circulating cooling water system is very difficult, and the construction and operation costs are high, so that the realization of the real zero emission target of the flue gas emission is hindered. In addition, the flue gas contains a large amount of waste heat to be taken away in a circulating cooling water system, and the precious waste heat is difficult to recycle, so that a large amount of energy is wasted.
How to invent a flue gas waste heat condensed water and a chemical water replenishing system to improve the problems becomes a problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
In order to compensate above not enough, the utility model provides a flue gas waste heat condensate water and chemical water supply system aims at improving that the flue gas contains a large amount of waste heat and is taken away in recirculating cooling water system, and these valuable waste heats hardly obtain recycle, cause the problem of the energy a large amount of wastes.
The utility model discloses a realize like this: a flue gas waste heat condensed water and chemical water supplementing system comprises
The flue gas passes through the heat exchanger to form condensed water;
the condensed water recovery tank is used for storing condensed water;
the evaporation tower is used for evaporating and concentrating the concentrated water by utilizing the flue gas passing through the heat exchanger;
the evaporation tower bottom pool stores evaporated concentrated water;
an electrochemical water treatment tank for chemically treating the concentrated water;
and the first circulating water pump pumps the concentrated water into the heat exchanger for heating.
The utility model discloses an among the preferred technical scheme, the comdenstion water recovery pond is right through second circulating water pump electrochemical water treatment pond carries out the moisturizing.
In a preferred technical scheme of the utility model, the electrochemical water treatment pond with be equipped with the depositing reservoir between the first circulating water pump.
In the preferable technical scheme of the utility model, the bottom of the evaporation tower bottom pool is connected with a salt purification and crystallization device.
The utility model discloses an among the preferred technical scheme, the comdenstion water recovery pond is right through second circulating water pump the moisturizing is carried out in the evaporation tower bottom pond.
In a preferred technical scheme of the utility model, total salt volume that the moisturizing in evaporation tower bottom pond was brought equals the scale volume that electrochemical water treatment pond was detached and the sum of the crystallization salt that salt purification crystallizer crystallized out.
In a preferred technical scheme of the utility model, the moisturizing volume equals the evaporation capacity of evaporation tower and the introduction the water sum of salt purification crystallization device.
The utility model discloses an among the preferred technical scheme, the surplus heat of flue gas of heat exchanger can satisfy the evaporation heat demand of evaporation tower evaporation capacity.
In a preferred technical scheme of the utility model, the salinity of evaporation tower bottom pond water can be adjusted according to the water inlet requirement of salt purification crystallization device.
In a preferred technical scheme of the utility model, the water in the evaporation tower bottom pond can be operated under the state that salinity is close to saturation.
The utility model has the advantages that: the utility model discloses a flue gas waste heat condensate and chemistry make-up water system that above-mentioned design obtained, abundant recycle flue gas waste heat carries out evaporative concentration, and to a great extent has solved the zero release in the power consumption problem of evaporative concentration link to realize automatic make-up water, make the construction and the running cost that realize the zero release descend substantially.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic diagram of a two-dimensional structure according to an embodiment of the present invention;
fig. 3 is a schematic top view of the structure according to the embodiment of the present invention;
fig. 4 is a schematic side view of the embodiment of the present invention.
In the figure: 100-a condensate recovery tank; 200-a second circulating water pump; 300-a heat exchanger; 400-an evaporation tower; 500-electrochemical water treatment tank; 600-a clarification tank; 700-a first circulating water pump; 800-evaporation tower bottom pool.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
Referring to fig. 1, the present invention provides a technical solution: a flue gas waste heat condensed water and chemical water replenishing system comprises a heat exchanger 300, wherein flue gas passes through the heat exchanger 300 to form condensed water; the heat exchanger 300 is connected with a condensate water recovery tank 100 through a pipeline, and the condensate water recovery tank 100 is used for storing condensate water;
referring to fig. 2, the heat exchanger 300 is connected to the evaporation tower 400 through a concentrated water pipe network, and the concentrated water is evaporated and concentrated by using the flue gas passing through the heat exchanger 300; the bottom of the evaporation tower 400 is provided with an evaporation tower bottom pool 800 for storing evaporated concentrated water; the bottom pool 800 of the evaporation tower is connected with the electrochemical water treatment pool 500 through a concentrated water pipe network to carry out chemical treatment on concentrated water, and the bottom of the bottom pool 800 of the evaporation tower is also connected with a salt purification and crystallization device through a pipe network;
referring to fig. 3, the electrochemical water treatment tank 500 is connected with a clarifier 600 through a concentrated water pipe network, the clarifier 600 clarifies concentrated water, and then the concentrated water is pumped into the heat exchanger 300 by a first circulating water pump 700 to be heated, so as to complete the concentrated water evaporation cycle;
referring to fig. 4, the condensate recovery tank 100 supplements water to the electrochemical water treatment tank 500 through the second water circulation pump 200, and meanwhile, the condensate recovery tank 100 supplements water to the bottom tank 800 of the evaporation tower through the second water circulation pump 200, where the quantity of supplemented water is equal to the sum of the evaporation capacity of the evaporation tower 400 and the quantity of water introduced into the salt purification and crystallization device.
The total salt amount brought by the water replenishing of the bottom pool 800 of the evaporation tower is equal to the sum of the scale amount removed by the electrochemical water treatment pool 500 and the crystallized salt crystallized by the salt purification and crystallization device.
The residual heat of the flue gas of the heat exchanger 300 can meet the evaporation heat requirement of the evaporation capacity of the evaporation tower 400.
The salinity of the water in the bottom evaporation tower pool 800 can be adjusted according to the water inlet requirement of the salt purification and crystallization device, and the water in the bottom evaporation tower pool 800 can be operated in a state that the salinity is close to saturation.
The working principle is as follows: the flue gas enters the heat exchanger 300 to exchange heat with the concentrated water extracted by the first circulating water pump 700 from the bottom pool 800 of the evaporation tower, the water after heat exchange enters the evaporation tower 400 again to be evaporated and cooled, and in addition, a certain amount of water is extracted from the bottom pool 800 of the evaporation tower and is conveyed to a salt purification and crystallization device to be purified and crystallized, and crystallized salt and clear water are separated, so that a circulating process of evaporation concentration and purification and crystallization by using the waste heat of steam is completed.
In the process, the electrochemical water treatment tank 500 is used for descaling and sterilizing before heat exchange of the tank water, so that corrosion and blockage of the heat exchanger 300 and the filler of the evaporation tower 400 are avoided. Three equilibria need to be maintained during the above evaporative concentration process: one is water balance, i.e. the water supply of the bottom tank 800 of the evaporation tower is equal to the sum of the evaporation capacity of the evaporation tower 400 and the water amount introduced into the salt purification crystallization device; the other is salt balance, namely the total salt content of the water supplement of the bottom pool 800 of the evaporation tower is equal to the sum of the scale amount removed by the electrochemical water treatment pool 500 and the crystallized salt crystallized by the salt purification and crystallization device; the third balance is heat balance, that is, the residual heat introduced into the heat exchanger 300 from the flue gas can satisfy the evaporation heat requirement of the evaporation capacity, and the water condensed by the heat exchanger 300 enters the condensate water recovery tank 100 for recycling.
The utility model discloses among the integrated processing system, utilize the electrochemical water treatment technique to detach scaling ions such as calcium, magnesium and biological slime and suspended solid in aquatic, detach partial chloride ion, disinfect and go out the algae, detach partial COD to prevent that heat exchanger 300, evaporating tower 400 and filler from corroding and the scale deposit is blockked up.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flue gas waste heat condensed water and chemical water replenishing system is characterized by comprising
The heat exchanger (300) is used for enabling the flue gas to pass through the heat exchanger (300) to form condensed water;
a condensed water recovery tank (100) for storing condensed water;
an evaporation tower (400) for evaporating and concentrating the concentrated water by using the flue gas passing through the heat exchanger (300);
an evaporation tower bottom tank (800) for storing evaporated concentrated water;
an electrochemical water treatment tank (500) for chemically treating the concentrated water;
a first circulating water pump (700) for pumping the concentrated water into the heat exchanger (300) for heating.
2. The flue gas waste heat condensed water and chemical water replenishing system according to claim 1, wherein the condensed water recovery tank (100) replenishes the electrochemical water treatment tank (500) through a second circulating water pump (200).
3. The flue gas waste heat condensed water and chemical water replenishing system according to claim 1, wherein a clarification tank (600) is arranged between the electrochemical water treatment tank (500) and the first circulating water pump (700).
4. The flue gas waste heat condensed water and chemical water replenishing system as claimed in claim 1, wherein the bottom of the evaporation tower bottom pool (800) is connected with a salt purification and crystallization device.
5. The flue gas waste heat condensed water and chemical make-up water system as claimed in claim 4, wherein the condensed water recovery tank (100) makes up water for the evaporation tower bottom tank (800) through a second circulating water pump (200).
6. The system for condensing the waste heat of flue gas and chemically supplementing water according to claim 5, wherein the total salt brought by the water supplemented in the bottom tank (800) of the evaporation tower is equal to the sum of the scale removed by the electrochemical water treatment tank (500) and the crystallized salt crystallized by the salt purification and crystallization device.
7. The flue gas waste heat condensed water and chemical water replenishing system as claimed in claim 6, wherein the amount of water replenished is equal to the sum of the amount of evaporated water in the evaporation tower (400) and the amount of water introduced into the salt purification and crystallization device.
8. The flue gas waste heat condensed water and chemical make-up water system as claimed in claim 1, wherein the flue gas waste heat of the heat exchanger (300) can meet the evaporation heat requirement of the evaporation capacity of the evaporation tower (400).
9. The flue gas waste heat condensed water and chemical make-up water system as claimed in claim 4, wherein the salinity of the water in the bottom tank (800) of the evaporation tower can be adjusted according to the water inlet requirement of the salt purification and crystallization device.
10. The flue gas waste heat condensed water and chemical make-up water system as claimed in claim 9, wherein the water in the bottom pond (800) of the evaporation tower can be operated at a salinity close to saturation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222073459.7U CN218231928U (en) | 2022-08-08 | 2022-08-08 | Flue gas waste heat condensate and chemical water replenishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222073459.7U CN218231928U (en) | 2022-08-08 | 2022-08-08 | Flue gas waste heat condensate and chemical water replenishing system |
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| Publication Number | Publication Date |
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| CN218231928U true CN218231928U (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222073459.7U Active CN218231928U (en) | 2022-08-08 | 2022-08-08 | Flue gas waste heat condensate and chemical water replenishing system |
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| CN (1) | CN218231928U (en) |
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- 2022-08-08 CN CN202222073459.7U patent/CN218231928U/en active Active
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