CN219620941U - Circulating water desalination device - Google Patents
Circulating water desalination device Download PDFInfo
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- CN219620941U CN219620941U CN202320753132.6U CN202320753132U CN219620941U CN 219620941 U CN219620941 U CN 219620941U CN 202320753132 U CN202320753132 U CN 202320753132U CN 219620941 U CN219620941 U CN 219620941U
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- resin bed
- mixed resin
- water
- tank
- pipeline
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The utility model relates to the technical field of circulating water desalination, and in particular provides a circulating water desalination device, which comprises: the desalination and circulation water tank, the back flushing water tank, the water inlet buffer tank, the mixed resin bed a, the mixed resin bed b, the mixed resin bed c, the acid liquid tank, the alkali liquid tank and the air washing component; the top ends of the mixed resin bed a, the mixed resin bed b and the mixed resin bed c are respectively provided with a water inlet pipeline and a backwashing discharge pipeline; the bottom ends of the mixed resin bed a, the mixed resin bed b and the mixed resin bed c are respectively provided with a backwashing feeding pipeline and a water outlet pipeline; the air washing assembly is provided with an air washing valve; the acid liquid tank and the alkali liquid tank are respectively connected with a backwashing feeding pipeline, and the air washing assembly is connected with the backwashing feeding pipeline through an air washing valve; the water outlet pipeline is connected with the backwashing feeding pipeline through a valve a, and the water outlet pipeline is connected with the desalination circulating water tank through a valve b. The utility model has the advantages of low investment, low treatment cost, simple structure and convenient control, and can meet the desalination requirement of circulating water.
Description
Technical Field
The utility model relates to the technical field of circulating water treatment, in particular to a circulating water desalting device.
Background
In industrial production such as petrochemical industry, a large amount of circulating water is needed for saving water and reducing cost. The circulating water is repeatedly used, a large amount of salt can be accumulated after long-time and high-temperature change, scale which affects heat exchange efficiency is easy to form, the loss rate of equipment is finally accelerated, and the service life of the equipment is reduced. The recycled water generated by sewage treatment is needed to be supplemented by industrial enterprises, the salt content in the recycled water is high, and the recycled water is needed to be used after desalination treatment. In the prior art, a desalted water system adopting a reverse osmosis process is adopted, but the desalted water system has the defects of high water consumption, high ton water cost, quick resin failure and the like, and is not beneficial to popularization and application. Compared with the high cost and high investment, the ion exchange technology has stable effluent quality, low cost and mature technology and is widely applied, so the utility model is particularly provided.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides a circulating water desalting device.
The technical scheme of the utility model is realized as follows:
a circulating water desalination apparatus comprising: desalination circulating water tank, back flush water tank and setting up in proper order: a water inlet buffer tank, a mixed resin bed a, a mixed resin bed b, a mixed resin bed c, an acid liquid tank, an alkali liquid tank and an air washing component;
the top ends of the mixed resin bed a, the mixed resin bed b and the mixed resin bed c are respectively provided with a water inlet pipeline connected with a water inlet buffer tank and a backwash discharging pipeline connected with a backwash medium water tank, the water inlet pipelines are respectively provided with a water inlet valve, and the backwash discharging pipelines are respectively provided with backwash discharging valves;
the bottom ends of the mixed resin bed a, the mixed resin bed b and the mixed resin bed c are respectively provided with a backwash feed pipeline connected with the air washing component and a water outlet pipeline connected with the desalination circulating water tank, backwash feed valves are respectively arranged on the backwash feed pipelines, and water outlet pipeline valves are respectively arranged on the water outlet pipelines;
the air washing assembly is provided with an air washing valve;
the acid liquid tank and the alkali liquid tank are respectively connected with a backwashing feeding pipeline, and the air washing assembly is connected with the backwashing feeding pipeline through an air washing valve; the water outlet pipeline is connected with the backwashing feeding pipeline through a valve a, and the water outlet pipeline is connected with the desalination circulating water tank through a valve b.
Preferably, the water inlet buffer tank further comprises a water inlet pump, and the water inlet buffer tank is respectively connected with the water inlet pipeline through the water inlet pump.
Further preferably, the device further comprises an acid washing pump, and the acid liquid tank is connected with a backwashing feed pipeline through the acid washing pump.
Further preferably, the device also comprises an alkaline washing pump, and the alkaline liquor tank is connected with a backwashing feed pipeline through the alkaline washing pump.
More preferably, the bottom of the desalination and circulation water tank is connected with a water outlet pump.
Most preferably, the bottom of the backwashing water tank is connected with an outer pump.
Compared with the prior art, the utility model has the advantages of simple structure, convenient control, more importantly, less investment and low treatment cost, and is beneficial to popularization and application.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model 1;
fig. 2 is a schematic structural view of the present utility model 2.
In the figure: 1. a water inlet buffer tank; 2. a water inlet pump; 3. a mixed resin bed a; 4. a mixed resin bed b; 5. a water outlet pipeline valve; 6. a mixed resin bed c; 7. backwashing the feed valve; 8a, valve a;8b, valve b; 9. an acid liquid tank; 10. a pickling pump; 11. an alkali solution tank; 12. an alkaline washing pump; 13. a gas washing valve; 14. a desalination and circulation water tank; 15. a water outlet pump; 16. an external pump; 17. backwashing the water tank; 18. backwashing the discharge valve; 19. a water inlet valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and 2 together: a circulating water desalination apparatus comprising: a water inlet buffer tank 1, a mixed resin bed a 3, a mixed resin bed b 4, a mixed resin bed c 6, an acid liquor tank 9, an alkali liquor tank 11, a gas washing component, a desalination and circulation water tank 14 and a back washing water tank 17;
a water inlet pump 2 is arranged on a water outlet pipeline of the water inlet buffer tank 1 and is used for pumping water in the water inlet buffer tank 1 into each mixed resin bed;
the top ends of the mixed resin bed a 3, the mixed resin bed b 4 and the mixed resin bed c 6 are respectively provided with a water inlet pipeline connected with a water outlet of the water inlet buffer tank 1 and a backwash discharging pipeline connected with the backwash water tank 17, each water inlet pipeline is provided with a water inlet valve 19, the water inlet of each mixed resin bed is controlled through the water inlet valve 19, each backwash discharging pipeline is respectively provided with a backwash discharging valve 18, and backwash discharging of each mixed resin bed is controlled through the backwash discharging valve 18;
the bottom ends of the mixed resin bed a 3, the mixed resin bed b 4 and the mixed resin bed c 6 are respectively provided with a backwash feed pipeline connected with the air washing component and a water outlet pipeline connected with the desalination circulating water tank 14, backwash feed valves 7 are respectively arranged on the backwash feed pipelines, backwash feed of each mixed resin bed is controlled through the backwash feed valves 7, water outlet pipeline valves 5 are respectively arranged on the water outlet pipelines, and water outlet of each mixed resin bed is controlled through the water outlet pipeline valves 5;
the air washing assembly is provided with an air washing valve 13, and backwash air inlet of the backwash feed pipe is controlled through the air washing valve 13;
the acid liquid tank 9 is respectively connected with a backwashing feeding pipeline through an acid washing pump 10, the alkali liquid tank 11 is respectively connected with the backwashing feeding pipeline through an alkali washing pump 12, valves are arranged on liquid outlet pipelines of the acid liquid tank 9 and the alkali liquid tank 11, and the air washing component is connected with the backwashing feeding pipeline through an air washing valve 13; the water outlet pipeline is connected with a backwashing feed pipeline through a valve a 8a, and the water outlet pipeline is connected with a desalination circulating water tank 14 through a valve b 8 b.
The components of the anion exchange resin in the mixed resin bed a 3, the mixed resin bed b 4 and the mixed resin bed c 6 are consistent, the adopted anion exchange resin is anion exchange resin containing alkaline groups and cation exchange resin containing acidic groups in the prior art, and the filling ratio of the anion exchange resin to the cation exchange resin is (1.5-2): 1, the resin filling content is 10-12BV/h (1/10-1/12 of the treatment circulating water quantity per hour). The mixed resin bed a 3, the mixed resin bed b 4 and the mixed resin bed c 6 are divided into two groups, one group is used for normal desalination, and the other group is used for acid washing, alkali washing, air washing and water washing, namely, the resin is regenerated for later use. The three are regenerated in turn periodically. Preferably, HCl solution with the mass percent of 4-5% and NaOH solution with the mass percent of 4-5% are adopted to be soaked for 2-4 hours alternately in turn, a large amount of clear water is used for leaching until the effluent is nearly neutral between the acid washing and the alkali washing, the process is repeated for 2-3 times, and the use amount of acid liquor or alkali liquor each time is 2 times the volume of the resin.
Working principle: the circulating water to be desalted enters the water inlet buffer tank 1, enters two mixed resin beds which normally carry out desalination work through the water inlet pump 2 via each water inlet pipeline, enters the desalination circulating water tank 14 through the water outlet pipeline after desalination treatment, and enters the circulating water system through the water outlet pump 15. During regeneration, desalted circulating water in the desalted circulating water tank 14 enters a mixed resin bed to be regenerated through a backwashing feeding pipeline to backwash resin, and then enters a backwashing water tank 17 through a backwashing discharging pipeline and is discharged by an external discharge pump 16; the input and output channels of air flow, acid liquid and alkali liquid during air washing, acid washing and alkali washing are the same as those described above.
The circulating water desalination test is carried out by adopting the circulating water desalination device provided by the utility model:
example 1 the external drainage of circulating water in a refinery is 100m 3 And (h) carrying out desalination treatment by adopting the circulating water desalination device provided by the utility model, wherein the filling ratio of the anion resin to the cation resin is 1.5:1, single bed resin loading 5m 3 Three mixed beds are added, two are provided for one, the desalination rate reaches 95% after treatment, and desalted water is used as circulating water supplementing water for recycling.
Example 2 the external drainage of circulating water in a chemical plant is 120m 3 And (h) carrying out desalination treatment by adopting the circulating water desalination device provided by the utility model, wherein the filling ratio of the anion resin to the cation resin is 2:1, single bed resin loading 5m 3 Three mixed beds are added, two are provided for one, the desalination rate after treatment is more than 95%, and desalted water is used as circulating water supplementing water for recycling.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model. The components or connections not specifically described in the present utility model are all of the prior art.
Claims (6)
1. A circulating water desalination apparatus, characterized in that: comprising the following steps: the desalination circulating water tank (14), the back flush water tank (17) and the device are arranged in sequence: a water inlet buffer tank (1), a mixed resin bed a (3), a mixed resin bed b (4), a mixed resin bed c (6), an acid liquor tank (9), an alkali liquor tank (11) and an air washing component;
the top ends of the mixed resin bed a (3), the mixed resin bed b (4) and the mixed resin bed c (6) are respectively provided with a water inlet pipeline connected with a water inlet buffer tank (1) and a backwash discharging pipeline connected with a backwash water tank (17), the water inlet pipelines are respectively provided with a water inlet valve (19), and the backwash discharging pipelines are respectively provided with a backwash discharging valve (18);
the bottom ends of the mixed resin bed a (3), the mixed resin bed b (4) and the mixed resin bed c (6) are respectively provided with a backwash feed pipeline connected with the air washing component and a water outlet pipeline connected with the desalination circulating water tank (14), the backwash feed pipelines are respectively provided with backwash feed valves (7), and the water outlet pipelines are respectively provided with water outlet pipeline valves (5);
the air washing assembly is provided with an air washing valve (13);
the acid liquid tank (9) and the alkali liquid tank (11) are respectively connected with the backwashing feeding pipeline, and the air washing component is connected with the backwashing feeding pipeline through an air washing valve (13); the water outlet pipeline is connected with the backwashing feeding pipeline through a valve a (8 a), and the water outlet pipeline is connected with the desalination circulating water tank (14) through a valve b (8 b).
2. The circulating water desalination apparatus of claim 1, wherein: the water inlet buffer tank (1) is respectively connected with the water inlet pipeline through the water inlet pump (2).
3. The circulating water desalination apparatus of claim 1, wherein: the acid tank (9) is connected with the backwashing feed pipeline through the acid pump (10).
4. The circulating water desalination apparatus of claim 1, wherein: the device also comprises an alkaline washing pump (12), and the alkaline liquor tank (11) is connected with the backwashing feed pipeline through the alkaline washing pump (12).
5. The circulating water desalination apparatus of claim 1, wherein: the bottom of the desalination circulating water tank (14) is connected with a water outlet pump (15).
6. The circulating water desalination apparatus of claim 1, wherein: the bottom of the back flushing water tank (17) is connected with an outer pump (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753132.6U CN219620941U (en) | 2023-04-07 | 2023-04-07 | Circulating water desalination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320753132.6U CN219620941U (en) | 2023-04-07 | 2023-04-07 | Circulating water desalination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219620941U true CN219620941U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320753132.6U Active CN219620941U (en) | 2023-04-07 | 2023-04-07 | Circulating water desalination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219620941U (en) |
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2023
- 2023-04-07 CN CN202320753132.6U patent/CN219620941U/en active Active
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