CN217051727U - Low-energy-consumption circulating cooling water descaling and antiscaling system - Google Patents
Low-energy-consumption circulating cooling water descaling and antiscaling system Download PDFInfo
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- CN217051727U CN217051727U CN202220794213.6U CN202220794213U CN217051727U CN 217051727 U CN217051727 U CN 217051727U CN 202220794213 U CN202220794213 U CN 202220794213U CN 217051727 U CN217051727 U CN 217051727U
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Abstract
The utility model provides a low energy consumption circulating cooling water descaling and antiscaling system, belonging to the technical field of circulating water treatment, comprising a circulating cooling water system, a flue gas recycling system and an electrolysis descaling system; the circulating cooling water system comprises a circulating water pool, a circulating pump, a cooling tower and a water collecting pool which are sequentially communicated; the flue gas recycling system comprises a flue gas absorption device arranged at the outlet end of the water collecting pool, and the flue gas absorption device is connected with the circulating water pool; the electrolytic descaling system comprises electrolytic cells which are arranged at the outlet end of the circulating pump in sequence; the electrolytic cell is used to electrolyze the circulating cooling water to produce hardness ion precipitate and hypochlorite solution. The utility model provides a low energy consumption recirculated cooling water scale removal scale control system, has reduced the addition of antisludging agent, corrosion inhibitor, germicide and sulphuric acid in water body preliminary treatment and circulating water treatment process; the subsequent softening or reverse osmosis treatment cost is reduced, the system water is saved, the sewage discharge is reduced, and the environment-friendly benefit is achieved.
Description
Technical Field
The utility model belongs to the technical field of the circulating water treatment, more specifically say, relate to a low energy consumption recirculated cooling water scale removal anti fouling system.
Background
Hardness ions such as calcium and magnesium are ubiquitous in circulating cooling water. In the antiscaling treatment of the circulating cooling water, the chemical method is most widely applied, namely, chemical agents are put into the water body, the formation of calcium scale is prevented and relieved by adopting a chemical reaction method, and the method is widely used. However, the chemical method inevitably puts a large amount of inorganic matters or organic matters into the water body, thereby causing secondary pollution to the water body and increasing the treatment cost of the circulating cooling water in the discharge process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low energy consumption recirculated cooling water scale removal anti fouling system aims at realizing the purpose of pollution-free scale removal scale control.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a low energy consumption recirculated cooling water scale removal anti fouling system, includes:
the circulating cooling water system comprises a circulating water pool, a circulating pump, a cooling tower and a water collecting pool which are sequentially communicated;
the flue gas recycling system comprises a flue gas absorption device arranged at the outlet end of the water collecting tank, the flue gas absorption device is used for absorbing carbon dioxide in flue gas, and the outlet end of the flue gas absorption device is connected with the inlet end of the circulating water tank;
the electrolytic descaling system comprises electrolytic cells which are sequentially arranged at the outlet end of the circulating pump; the electrolytic cell is used for electrolyzing the circulating cooling water to generate hardness ion precipitation and hypochlorite solution, and the outlet end of the electrolytic cell is connected with the inlet end of the water collecting pool.
As another embodiment of the present application, the electrolytic cell, the cooling tower and the circulating pump are connected by a three-way valve.
As another embodiment of the application, a descaler is connected with the electrolytic cell and is used for removing hardness ion precipitation generated in the electrolytic cell.
As another embodiment of the application, the inlet end of the electrolytic cell is provided with a water body filter, and the water body filter is used for filtering impurities and sediments in the circulating cooling water.
As another embodiment of the application, the electrolytic cell is a membraneless electrolytic cell, and an electrolytic plate coated with a titanium-based nano ruthenium-iridium coating is arranged in the electrolytic cell.
As another embodiment of the present application, a back washing device is further connected to one side of the electrolytic cell, and the back washing device is used for back washing the scale attached to the electrolytic cell.
As another embodiment of the present application, the flue gas absorption device comprises:
the shell is provided with a flue gas input pipe and a flue gas output pipe which are respectively communicated with a flue gas pipeline; the shell is provided with a water inlet pipe for communicating the water collecting tank and a water outlet pipe for communicating the circulating water tank;
and the spraying device is arranged in the shell and connected with the water inlet pipe and used for spraying circulating cooling water into the shell.
As another embodiment of this application, the lower extreme of casing is the back taper, the outlet pipe is located the bottom of casing.
The utility model provides a low energy consumption recirculated cooling water scale removal anti fouling system's beneficial effect lies in: compared with the prior art, the low-energy-consumption circulating cooling water descaling and antiscaling system reduces the addition of scale inhibitor, corrosion inhibitor, bactericide and sulfuric acid in the water body pretreatment and circulating water treatment processes; the subsequent softening or reverse osmosis treatment cost is reduced, the water used by the system is saved, and the energy-saving benefit is obvious; reduces sewage discharge and has environmental protection benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a low-energy consumption circulating cooling water descaling and antiscaling system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a flue gas absorption device provided by the embodiment of the present invention.
In the figure: 1. a flue gas absorption device; 2. a circulating water tank; 3. a circulation pump; 4. a cooling tower; 5. a water collecting pool; 6. an electrolytic cell; 7. a descaler; 8. a backwashing device; 10. a housing; 11. a water inlet pipe; 12. a water outlet pipe; 13. a flue gas input pipe; 14. a flue gas output pipe; 15. and (4) a spraying device.
Detailed Description
In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the low energy consumption circulating cooling water descaling and antiscaling system provided by the present invention will now be described. The low-energy-consumption circulating cooling water descaling and antiscaling system comprises a circulating cooling water system, a flue gas recycling system and an electrolytic descaling system; the circulating cooling water system comprises a circulating water tank 2, a circulating pump 3, a cooling tower 4 and a water collecting tank 5 which are sequentially communicated; the flue gas recycling system comprises a flue gas absorption device 1 arranged at the outlet end of the water collecting tank 5, the flue gas absorption device 1 is used for absorbing carbon dioxide in flue gas, and the outlet end of the flue gas absorption device 1 is connected with the inlet end of the circulating water tank 2; the electrolytic descaling system comprises an electrolytic cell 6 which is arranged at the outlet end of the circulating pump 3 in sequence; the electrolytic cell 6 is used for electrolyzing the circulating cooling water to generate hardness ion precipitation and hypochlorite solution, and the outlet end of the electrolytic cell 6 is connected with the inlet end of the water collecting tank 5.
Compared with the prior art, the low-energy-consumption circulating cooling water descaling and antiscaling system provided by the utility model has the advantages that circulating cooling water enters the flue gas absorption device 1 from the water collecting tank 5, carbon dioxide is absorbed, the circulating cooling water enters the circulating water tank 2, the circulating cooling water enters the cooling tower 4 from the circulating water tank 2 by virtue of the circulating pump 3, and then enters the water collecting tank 5 from the cooling tower 4 to complete circulation; the arrangement of the flue gas absorption device 1 improves the solubility of carbon dioxide in cooling water, avoids an interval where scale is formed on a cooling surface, and realizes scale prevention; the hardness ions mainly comprising calcium ions and magnesium ions contained in the water are easy to precipitate in the circulation process, so that when the water quality is hard, the extracted circulating cooling water enters the electrolytic cell 6 from the circulating pump 3, the magnesium ions in the circulating cooling water react with hydroxide ions to generate magnesium hydroxide precipitates under the electrolysis action of the electrolytic cell 6, calcium bicarbonate in the circulating cooling water reacts with the hydroxide ions to generate calcium carbonate precipitates, and the chloride ions in the circulating cooling water generate chlorine and hypochlorous acid solution under the electrolysis action, and the hypochlorous acid solution is conveyed to the water collecting tank 5 for sterilization and algae removal of the circulating cooling water.
The utility model provides a low energy consumption recirculated cooling water scale removal scale control system has reduced the addition of antisludging agent, corrosion inhibitor, germicide and sulphuric acid in water body preliminary treatment and circulating water treatment process; the subsequent softening or reverse osmosis treatment cost is reduced, the water used by the system is saved, and the energy-saving benefit is obvious; reduces sewage discharge and has environmental protection benefit.
Optionally, during the electrolysis process, the anode reaction of the electrolytic cell 6 is 2H 2 +2e - →H 2 ↑+OH - (ii) a Cathode reaction of the electrolytic cell 6 is 2Cl - -2e - →Cl 2 ↑+X + (ii) a The following reactions are present in the solution in the electrolytic cell 6: 2OH - +Mg 2+ →Mg(OH) 2 ↓；2OH - +2CaHCO 3 →2CaCO 3 ↓+H 2 And O. When water flows through the cathode plate and the anode plate, hardness ions in the water body are effectively removed in the form of scale in the electrolysis process through electrolysis.
In the boiler flue gas, the content of carbon dioxide is more than 12 percent and is far more than 0.03 percent of the content in the air, and the content is about 400 times of the content of the carbon dioxide in the air. When the circulating cooling water passes through the flue gas absorption device 1, the solubility of carbon dioxide in the cooling water is also increased; the solubility of calcium carbonate at this pressure is 7.5 times greater than that in air, which is much higher than that in the scale formation.
In some possible embodiments, referring to fig. 1, the electrolytic cell 6, the cooling tower 4 and the circulation pump 3 are connected by a three-way valve.
Optionally, the pipeline at the outlet end of the circulating pump 3 is connected with the pipelines at the inlet ends of the electrolytic cell 6 and the cooling tower 4 by a tee joint, and the pipelines at the inlet ends of the electrolytic cell 6 and the cooling tower 4 are both provided with an on-off valve.
In some possible embodiments, a descaler 7 is connected to the electrolytic cell 6, the descaler 7 being used to remove hardness ion deposits generated within the electrolytic cell 6.
Optionally, a water filter is arranged at the inlet end of the electrolytic cell 6, and the water filter is used for filtering impurities and precipitates in the circulating cooling water. A back washing device 8 is arranged at one side of the electrolytic cell 6 and is used for back washing the attached scale in the electrolytic cell 6.
In some possible embodiments, the electrolytic cell 6 is a membraneless electrolytic cell, and the electrolytic cell 6 is provided with an electrolytic plate coated with titanium-based nano ruthenium iridium coating.
The system selects a membrane-free electrolysis technology, and has high electrolysis efficiency. A metal electrode is arranged in the electrolytic cell 6, wherein the anode is an electrolytic plate coated with a titanium-based nano ruthenium iridium coating. The electrolytic plate coated with the titanium-based nano ruthenium-iridium coating can work in an environment with high chloride ions, converts high-concentration chlorine radicals into hypochlorite, and decomposes COD (chemical oxygen demand), organic impurities and the like through the indirect oxidation of the hypochlorite.
In some possible embodiments, referring to fig. 2, the flue gas absorption device 1 comprises a housing 10 and a spraying device 15; the shell 10 is provided with a flue gas input pipe 13 and a flue gas output pipe 14 which are used for communicating a flue gas pipeline; the shell 10 is provided with a water inlet pipe 11 for communicating the water collecting tank 5 and a water outlet pipe 12 for communicating the circulating water tank 2; the spraying device 15 is arranged in the shell 10, and the spraying device 15 is connected with the water inlet pipe 11 and is used for spraying circulating cooling water into the shell 10.
Specifically, the upper part of the shell 10 is provided with a flue gas output pipe 14 and a water inlet pipe 11; the lower part of the shell 10 is provided with a flue gas input pipe 13 and a water outlet pipe 12. The spraying device 15 is arranged on the upper portion of the shell 10, the spraying device 15 is communicated with the water inlet pipe 11 to spray the circulating cooling water in the water inlet pipe 11 downwards from the spray head, and in the spraying process, the circulating cooling water absorbs and dissolves carbon dioxide in the smoke. The spraying device 15 is a nozzle with a downward nozzle.
Optionally, the lower end of the casing 10 is in an inverted cone shape, and the water outlet pipe 12 is located at the bottom of the casing 10, so as to facilitate collection of the circulating cooling water in the casing 10.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (8)
1. Low energy consumption recirculated cooling water scale removal scale control system, its characterized in that includes:
the circulating cooling water system comprises a circulating water pool (2), a circulating pump (3), a cooling tower (4) and a water collecting pool (5) which are sequentially communicated;
the flue gas recycling system comprises a flue gas absorption device (1) arranged at the outlet end of the water collecting tank (5), wherein the flue gas absorption device (1) is used for absorbing carbon dioxide in flue gas, and the outlet end of the flue gas absorption device (1) is connected with the inlet end of the circulating water tank (2);
the electrolytic descaling system comprises an electrolytic cell (6) which is arranged at the outlet end of the circulating pump (3) in sequence; the electrolytic cell (6) is used for electrolyzing the circulating cooling water to generate hardness ion precipitation and hypochlorite solution, and the outlet end of the electrolytic cell (6) is connected with the inlet end of the water collecting tank (5).
2. Low energy consumption circulating cooling water descaling and antiscaling system according to claim 1, wherein the electrolytic cell (6), the cooling tower (4), and the circulating pump (3) are connected by means of three-way valves.
3. A low energy consumption recirculating cooling water descaling and antiscaling system according to claim 2, wherein a descaler (7) is connected to the electrolytic cell (6), said descaler (7) being adapted to remove hardness ion deposits generated in the electrolytic cell (6).
4. A low energy consumption recirculating cooling water descaling and antiscaling system according to claim 3, wherein the inlet end of the electrolytic cell (6) is provided with a water filter for filtering impurities and precipitates in the recirculating cooling water.
5. The low-energy-consumption circulating cooling water descaling and scale prevention system of claim 4, wherein the electrolytic cell (6) is a membraneless electrolytic cell, and an electrolytic plate coated with titanium-based nano ruthenium iridium coating is arranged in the electrolytic cell (6).
6. The low energy consumption circulating cooling water descaling and antiscaling system according to claim 5, wherein a back-flushing device (8) is further connected to one side of the electrolytic cell (6), and the back-flushing device (8) is used for back-flushing the attached scale in the electrolytic cell (6).
7. Low energy consumption recirculating cooling water descaling and antiscaling system according to claim 1, wherein said flue gas absorption device (1) comprises:
the device comprises a shell (10), wherein the shell (10) is provided with a flue gas input pipe (13) and a flue gas output pipe (14) which are respectively communicated with a flue gas pipeline; the shell (10) is provided with a water inlet pipe (11) communicated with the water collecting tank (5) and a water outlet pipe (12) communicated with the circulating water tank (2);
and the spraying device (15) is arranged in the shell (10), and the spraying device (15) is connected with the water inlet pipe (11) and is used for spraying circulating cooling water into the shell (10).
8. Low energy consumption recirculating cooling water descaling and antiscaling system according to claim 7, wherein the lower end of the housing (10) is of an inverted cone shape, and the water outlet pipe (12) is located at the bottom of the housing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220794213.6U CN217051727U (en) | 2022-04-06 | 2022-04-06 | Low-energy-consumption circulating cooling water descaling and antiscaling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220794213.6U CN217051727U (en) | 2022-04-06 | 2022-04-06 | Low-energy-consumption circulating cooling water descaling and antiscaling system |
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| Publication Number | Publication Date |
|---|---|
| CN217051727U true CN217051727U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220794213.6U Active CN217051727U (en) | 2022-04-06 | 2022-04-06 | Low-energy-consumption circulating cooling water descaling and antiscaling system |
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| Country | Link |
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| CN (1) | CN217051727U (en) |
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