CN210176526U - Circulating cooling water system - Google Patents
Circulating cooling water system Download PDFInfo
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- CN210176526U CN210176526U CN201921037830.6U CN201921037830U CN210176526U CN 210176526 U CN210176526 U CN 210176526U CN 201921037830 U CN201921037830 U CN 201921037830U CN 210176526 U CN210176526 U CN 210176526U
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- water
- circulating
- sterilization device
- medium
- cooling water
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- 239000000498 cooling water Substances 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 53
- 230000001954 sterilising effect Effects 0.000 claims abstract description 52
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003546 flue gas Substances 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000003134 recirculating effect Effects 0.000 claims abstract description 14
- 230000002087 whitening effect Effects 0.000 claims abstract description 12
- 238000001728 nano-filtration Methods 0.000 claims description 43
- 238000000108 ultra-filtration Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 10
- 239000012528 membrane Substances 0.000 abstract description 7
- 244000005700 microbiome Species 0.000 abstract description 6
- 230000002070 germicidal effect Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000001223 reverse osmosis Methods 0.000 description 13
- 230000008030 elimination Effects 0.000 description 10
- 238000003379 elimination reaction Methods 0.000 description 10
- 239000003814 drug Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The utility model discloses a recirculating cooling water system, include: the system comprises a circulating water forebay, a flue gas whitening heat exchange tube group and a cooling tower; a first medium-pressure ultraviolet sterilization device is arranged on a pipeline between the smoke-gas-whitening heat exchange tube set and the cooling tower. The first medium-pressure ultraviolet sterilization device is communicated with a pipeline between the flue gas white-eliminating heat exchange tube set and the cooling tower, and sterilization operation is carried out on circulating water through ultraviolet rays to replace dosing operation in the prior art, microorganisms in water can be effectively removed in the mode, so that the pollution, blockage and corrosion caused by the microorganisms in the water are avoided, the sterilization device is arranged in a position before the circulating water passes through the membrane structure, sterilization and impurity removal are continued in advance, and the damage to the membrane structure in the system is avoided; and no longer introduce too much salinity, make water salt balance control easier in the system, reduced the degree of difficulty that the circulating water cascade utilized, disinfect through first middling pressure ultraviolet germicidal device and realize automatic operation, avoid reinforced artifical work, greatly reduced the human cost.
Description
Technical Field
The utility model relates to a sewage treatment technical field, more specifically say, relate to a recirculating cooling water system.
Background
At present, in some domestic thermoelectric projects, the produced water source of the thermoelectric projects adopts the reclaimed water treated by a nearby sewage treatment plant, so that the problem of poor water quality is generally solved, and in some cases, the hardness of the reclaimed water is up to 730mg/L, the chloride ion content is up to 830mg/L, the sulfate radical content is up to 505mg/L, the salt content is up to 2550mg/L, and the total number of bacteria is up to 7700/mL.
In view of the above situation, a mechanical acceleration clarifier is often used in combination with a variable-pore filter to pretreat the mechanical acceleration clarifier so as to reduce hardness, alkalinity, organic matters, suspended matters and the like in water, and the treated clean water is used as circulating water for replenishing water.
Generally, clear water after advanced treatment of reclaimed water is subjected to cyclic concentration in a circulating water system, the concentration multiple reaches 3.8 times, the quality of the circulating water is worse, various indexes of chloride ions, sulfate radicals and salt content are all improved in multiples, after pretreatment by a double-alkali method, the clear water is used as a water source for boiler makeup water treatment to reduce the hardness, alkalinity, organic matters, suspended matters and the like in the water and then is used as a water source for boiler makeup water treatment, and improper water quality treatment directly causes the abnormal operation of a subsequent water treatment system.
The traditional dosing mode is mostly adopted for circulating water sterilization at present, a large amount of residual medicament is brought into a subsequent system, so that the conditions of membrane system oxidation, pollution blockage and the like are caused, and a large amount of salt is brought in by dosing; in addition, the traditional medicine adding causes troubles to salt balance and water balance of a whole-plant water system, and the gradient utilization difficulty of the whole-plant water is very high.
In summary, how to effectively solve the technical problems of the medicament treatment method of the circulating cooling water in the thermoelectric project, the increased difficulty in utilizing the subsequent water, the high treatment cost, and the like is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a recirculating cooling water system, which can effectively solve the problem of the chemical treatment of the recirculating cooling water in the thermoelectric project, increase the difficulty of utilizing the subsequent water, and increase the treatment cost.
In order to achieve the above object, the utility model provides a following technical scheme:
a recirculating cooling water system comprising: the system comprises a circulating water forebay, a flue gas whitening heat exchange tube group and a cooling tower; and a first medium-pressure ultraviolet sterilization device is arranged on a pipeline between the smoke gas disinfection heat exchange tube set and the cooling tower.
Preferably, a flue gas white elimination circulating pump is arranged on a pipeline between the flue gas white elimination heat exchange tube set and the circulating water forebay, the flue gas white elimination heat exchange tube set comprises a water return pipeline for returning water, and the first medium-pressure ultraviolet sterilization device is arranged on the water return pipeline.
Preferably, the processing flow of the first medium-pressure ultraviolet sterilization device is matched with the rated output flow of the smoke whitening circulating pump.
Preferably, the circulating water of the circulating cooling water system is recycled to the boiler make-up water treatment loop, and a second medium-pressure ultraviolet sterilization device is arranged in the boiler make-up water treatment loop and used for purifying the boiler make-up water.
Preferably, the boiler make-up water treatment loop comprises a self-cleaning filtering component, an ultrafiltration component and a nanofiltration component, and the second medium-pressure ultraviolet sterilization device is arranged on a pipeline between the ultrafiltration component and the nanofiltration component.
Preferably, a nanofiltration water feed pump is arranged on a pipeline between the ultrafiltration assembly and the nanofiltration assembly, and the second medium-pressure ultraviolet sterilization device is arranged between the nanofiltration water feed pump and the nanofiltration assembly.
Preferably, the treatment flow rate of the second medium-pressure ultraviolet sterilization device is matched with the rated output flow rate of the nanofiltration water feed pump.
Preferably, a nanofiltration cartridge filter and a nanofiltration high-pressure pump are arranged on a pipeline between the second medium-pressure ultraviolet sterilization device and the nanofiltration assembly.
The utility model provides a recirculating cooling water system, include: the system comprises a circulating water forebay, a flue gas whitening heat exchange tube group and a cooling tower; and a first medium-pressure ultraviolet sterilization device is arranged on a pipeline between the smoke gas disinfection heat exchange tube set and the cooling tower. The utility model provides a circulating cooling water system, communicate first middling pressure ultraviolet germicidal device on the pipeline between flue gas white heat transfer tube group and the cooling tower, through ultraviolet ray to the circulating water operation of disinfecting to replace the medicine operation among the prior art, can effectively get rid of aquatic microorganism through this mode, in order to avoid the stifled corrosion situation of dirt that aquatic microorganism caused, set up the position through the sterilizing equipment before the circulating water passes through the membrane structure, continue to disinfect in advance and edulcorate, avoided the damage to the membrane structure in the system; and no longer introduce too much salinity, make water salt balance control easier in the system, reduced the degree of difficulty that the circulating water step utilized, disinfect through first middling pressure ultraviolet germicidal device and realize automatic operation, just also avoided the artifical work in traditional reinforced operation, greatly reduced the human cost, to sum up, the utility model provides a recirculating cooling water system has solved the medicament treatment of thermoelectric project inner loop cooling water effectively, increases follow-up water and has utilized the degree of difficulty, and the high technical problem of treatment cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic system structure diagram of a recirculating cooling water system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a system structure of a boiler makeup water treatment circuit according to an embodiment of the present invention.
The drawings are numbered as follows:
the system comprises a cooling tower 1, a circulating water forebay 2, a flue gas white elimination circulating pump 3, a flue gas white elimination heat exchange tube group 4, a first medium-pressure ultraviolet sterilization device 5, an ultrafiltration water production tank 6, a nanofiltration water feed pump 7, a second medium-pressure ultraviolet sterilization device 8, a nanofiltration cartridge filter 9 and a nanofiltration high-pressure pump 10.
Detailed Description
The embodiment of the utility model discloses recirculating cooling water system to solve thermoelectric project inner loop cooling water's medicament treatment mode, increase the technical problem that follow-up water utilized the degree of difficulty, and the treatment cost height etc..
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a system structure of a circulating cooling water system according to an embodiment of the present invention; fig. 2 is a schematic diagram of a system structure of a boiler makeup water treatment circuit according to an embodiment of the present invention.
In one embodiment, the utility model provides a recirculating cooling water system, include: the system comprises a circulating water forebay 2, a flue gas white elimination heat exchange tube group 4 and a cooling tower 1; a first medium-pressure ultraviolet sterilization device 5 is arranged on a pipeline between the smoke-gas-eliminating heat exchange tube set 4 and the cooling tower 1.
According to the circulating cooling water system, the first medium-pressure ultraviolet sterilization device is communicated on the pipeline between the flue gas disinfection heat exchange tube set and the cooling tower, the circulating water is sterilized through ultraviolet rays to replace the dosing operation in the prior art, microorganisms in water can be effectively removed through the mode, the pollution, blockage and corrosion caused by the microorganisms in the water are avoided, the sterilization device is arranged in a position before the circulating water passes through the membrane structure, the sterilization and impurity removal are continued in advance, and the damage to the membrane structure in the system is avoided;
and no longer introduce too much salinity, make water salt balance control easier in the system, reduced the degree of difficulty that the circulating water step utilized, disinfect through first middling pressure ultraviolet germicidal device and realize automatic operation, just also avoided the artifical work in the traditional reinforced operation, greatly reduced the human cost, to sum up, the utility model provides a recirculating cooling water system has solved the medicament treatment of boiler circulating water in the thermoelectric project effectively, increases follow-up water and has utilized the degree of difficulty, and the high technical problem of treatment cost.
In a specific embodiment, a flue gas white elimination circulating pump 3 is arranged on a pipeline between the flue gas white elimination heat exchange tube set 4 and the circulating water forebay 2, the flue gas white elimination heat exchange tube set 4 comprises a water return pipeline for returning water, and the first medium-pressure ultraviolet sterilization device 5 is arranged on the water return pipeline.
In the technical scheme provided by this embodiment, the arrangement position of the first medium-pressure ultraviolet sterilization device 5 is further optimized, and since the flue gas whitening operation itself needs the driving force provided by the pump device, and the ultraviolet sterilization device also needs the corresponding flow driving, so as to carry out the water sterilization normally and efficiently, the flue gas whitening circulating pump 3 is used in this embodiment to provide the driving force for the first medium-pressure ultraviolet sterilization device 5.
In one embodiment, the processing flow of the first medium-pressure ultraviolet sterilization device 5 is matched with the rated output flow of the smoke whitening circulating pump 3. Circulating water ultraviolet sterilization design parameters: light transmittance: 66.4%, the circulating water retention capacity of a single unit is about: 16000t, the time required for one theoretical sterilization cycle is about 4.6 h. Design calculation confirms that 1 set of 3500t/h first medium-pressure ultraviolet sterilization equipment 5 is added on a flue gas white-eliminating circulating water return pipeline in a circulating water system of each unit, the existing flue gas white-eliminating circulating pump 3 is used for providing power, a water pump is not additionally added, and equipment investment and energy consumption are saved.
In one embodiment, the circulating water of the circulating cooling water system is recycled to the boiler make-up water treatment loop, and a second medium-pressure ultraviolet sterilization device 8 is arranged in the boiler make-up water treatment loop and is used for purifying the boiler make-up water. In the technical solution provided in this embodiment, another set of medium-pressure ultraviolet sterilization devices is also provided in the boiler makeup water treatment circuit, and the makeup water is also sterilized by the second medium-pressure ultraviolet sterilization device 8, which avoids adding chemicals to the makeup water in the same manner as in the above-described embodiment.
In one embodiment, the boiler make-up water treatment circuit comprises a self-cleaning filtration assembly, an ultrafiltration assembly and a nanofiltration assembly, and the second medium-pressure ultraviolet sterilization device 8 is arranged on a pipeline between the ultrafiltration assembly and the nanofiltration assembly. A nanofiltration water feed pump 7 is arranged on a pipeline between the ultrafiltration component and the nanofiltration component, and a second medium-pressure ultraviolet sterilization device 8 is arranged between the nanofiltration water feed pump 7 and the nanofiltration component.
In the technical scheme that this embodiment provided, refer to the design that in the above-mentioned embodiment communicates first medium pressure ultraviolet sterilizing equipment 5 with flue gas white elimination circulating pump 3 pipeline, can make full use of in this embodiment and receive water pump 7 and provide the driven flow for second medium pressure ultraviolet sterilizing equipment 8 by the nanofiltration.
In one embodiment, the processing flow rate of the second medium-pressure ultraviolet sterilization device 8 is matched with the rated output flow rate value of the nanofiltration water feed pump 7. A nano-filtration cartridge filter 9 and a nano-filtration high-pressure pump 10 are arranged on a pipeline between the second medium-pressure ultraviolet sterilization device 8 and the nano-filtration assembly. And (3) calculating according to the nanofiltration water inlet amount of 3 multiplied by 130t/h, and determining that 1 set of medium-pressure ultraviolet sterilization equipment with the treatment water amount of 390t/h, namely a second medium-pressure ultraviolet sterilization device 8 is arranged on a main pipe at the outlet of a nanofiltration water feed pump 7.
The pretreated water of the circulating sewage is boosted by a water-purifying booster pump, then passes through a raw water heater, a self-cleaning filter and an ultrafiltration component in sequence, suspended matters, colloids, organic matters and part of bacteria in the water are removed by the ultrafiltration component, and the produced water enters an ultrafiltration water production tank 6; water in the ultrafiltration water production tank 6 is conveyed to a second medium-pressure ultraviolet sterilization device 8 for sterilization through a nanofiltration water feed pump 7, the sterilized water enters a nanofiltration assembly through a nanofiltration cartridge filter 9 and a nanofiltration high-pressure pump 10, the nanofiltration assembly mainly removes divalent salts in the incoming water, and the produced water enters the nanofiltration water production tank; conveying the nanofiltration produced water to a first-stage reverse osmosis cartridge filter and a first-stage reverse osmosis by a first-stage reverse osmosis feed pump, removing most salts in the water by the first-stage reverse osmosis, and returning the water to a first-stage reverse osmosis water production tank; the first-stage reverse osmosis produced water is conveyed to a second-stage reverse osmosis cartridge filter and a second-stage reverse osmosis by a second-stage reverse osmosis feed pump, salts in the water are further removed by the second-stage reverse osmosis to ensure the EDI water use requirement, and the second-stage reverse osmosis produced water returns to a second-stage reverse osmosis produced water tank; the two-stage reverse osmosis produced water is conveyed to an EDI cartridge filter and an EDI by an EDI water supply pump, the EDI is used for removing almost all ions in the water, the conductivity of the effluent water is 0.055-0.10 mu S/cm, and the water quality requirement of the boiler make-up water is met.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A recirculating cooling water system comprising: the system comprises a circulating water forebay, a flue gas whitening heat exchange tube group and a cooling tower; the device is characterized in that a first medium-pressure ultraviolet sterilization device is arranged on a pipeline between the smoke gas disinfection and heat exchange tube set and the cooling tower.
2. The circulating cooling water system according to claim 1, wherein a flue gas whitening circulating pump is arranged on a pipeline between the flue gas whitening heat exchange tube set and the circulating water forebay, the flue gas whitening heat exchange tube set comprises a water return pipeline for returning water, and the first medium-pressure ultraviolet sterilization device is arranged on the water return pipeline.
3. The circulating cooling water system of claim 2, wherein the treatment flow rate of the first medium-pressure ultraviolet sterilization device is matched with the rated output flow rate value of the flue gas whitening circulating pump.
4. The circulating cooling water system according to any one of claims 1 to 3, wherein circulating water of the circulating cooling water system is recycled to a boiler makeup water treatment circuit, and a second medium-pressure ultraviolet sterilization device is arranged in the boiler makeup water treatment circuit and is used for purifying boiler makeup water.
5. The recirculating cooling water system of claim 4, wherein the boiler makeup water treatment loop comprises a self-cleaning filter assembly, an ultrafiltration assembly, and a nanofiltration assembly, and wherein the second intermediate pressure UV sterilization device is disposed on a conduit between the ultrafiltration assembly and the nanofiltration assembly.
6. The circulating cooling water system as claimed in claim 5, wherein a nano-filtration water feed pump is disposed on a pipeline between the ultrafiltration module and the nano-filtration module, and the second medium-pressure ultraviolet sterilization device is disposed between the nano-filtration water feed pump and the nano-filtration module.
7. The recirculating cooling water system of claim 6, wherein the second intermediate-pressure UV sterilization device has a treatment flow rate that matches a nominal output flow rate value of the nano-filtration feed pump.
8. The circulating cooling water system as claimed in claim 7, wherein a nano-filtration cartridge filter and a nano-filtration high-pressure pump are disposed on a pipeline between the second medium-pressure ultraviolet sterilization device and the nano-filtration assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037830.6U CN210176526U (en) | 2019-07-04 | 2019-07-04 | Circulating cooling water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921037830.6U CN210176526U (en) | 2019-07-04 | 2019-07-04 | Circulating cooling water system |
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| Publication Number | Publication Date |
|---|---|
| CN210176526U true CN210176526U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921037830.6U Expired - Fee Related CN210176526U (en) | 2019-07-04 | 2019-07-04 | Circulating cooling water system |
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| CN (1) | CN210176526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848173A (en) * | 2021-10-27 | 2021-12-28 | 洛阳强龙实业有限公司 | Dynamic simulation test method for circulating water of non-phosphorus scale and corrosion inhibitor |
-
2019
- 2019-07-04 CN CN201921037830.6U patent/CN210176526U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848173A (en) * | 2021-10-27 | 2021-12-28 | 洛阳强龙实业有限公司 | Dynamic simulation test method for circulating water of non-phosphorus scale and corrosion inhibitor |
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Granted publication date: 20200324 |