CN105271549A - System and method for comprehensive utilization of circuiting water resource of thermal power plant - Google Patents
System and method for comprehensive utilization of circuiting water resource of thermal power plant Download PDFInfo
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Abstract
The invention discloses a system and a method for comprehensive utilization of the circulating water source of a thermal power plant. The system comprises a high-speed filter, a circulating water screen well, a circulating water pump, a turbine device, a circulating water cooling tower, a water-delivery pump and a water purification device. The method comprises steps as follows: (1), water replenishment of the cooling tower; (2), circulating water treatment in the cooling tower; (3), circulating water purification treatment. The system and the method have the advantages as follows: (1), raw water is replenished in the circulating water for cooling a condenser, the vacuum degree can be increased, and the turbine operation efficiency is improved; (2), the replenished raw water can optimize the circulating water quality, then the circulating water is pumped out for use, pumping and replenishing balance is realized, the circulating water is in positive cycle, and meanwhile, zero blowdown of the cooling tower is realized; (3), ultrafiltration and reverse osmosis are facilitated, and water yield is increased.
Description
Technical field:
The present invention relates to comprehensive utilization system of water source and method, particularly relate to a kind of circulating-water in thermal power plant resource comprehensive utilization system and method.
Background technology:
Circulating-water in thermal power plant, for meeting processing requirement, needs continuous unboiled water or middle water to replace recirculated water, causes the waste of great lot of water resources, bring huge pressure simultaneously for follow-up sewage disposal in operational process.The heat taken out of by turbine condenser of recirculated water also by cooling tower directly discharged to air, cause the significant wastage of the energy.
At present, water utilities company unboiled water is directly by water-purification plant process, and according to water-purification plant operation instruction, unboiled water temperature controls under 26 DEG C of conditions, equipment water production rate is maximum, unboiled water temperature from underground is generally 0-4 DEG C, can not meet the maximum water production rate requirement of equipment, therefore cause the waste of great lot of water resources.
Summary of the invention:
First object of the present invention is to provide a kind of circulating-water in thermal power plant resource comprehensive utilization system.
Second object of the present invention is to provide a kind of circulating-water in thermal power plant Resource comprehensive utilization method.
First object of the present invention is implemented by following technical scheme, circulating-water in thermal power plant resource comprehensive utilization system, it comprises high rate filter, circulating water screen well, water circulating pump, steam turbine plant, circulating water cooling tower, water transfer pump and water-purification plant, the water outlet of described high rate filter is connected with the water-in pipeline of described circulating water screen well, the water outlet of described circulating water screen well is connected with the water-in pipeline of described water circulating pump, the water outlet of described water circulating pump is connected with the entrance of cooling water pipeline of described steam turbine plant, the cooling water outlet of described steam turbine plant is connected with the water-in pipeline of described circulating water cooling tower, the tower basin water outlet of described circulating water cooling tower is connected with the water-in pipeline of described water transfer pump, the water outlet of described water transfer pump is connected with the water-in pipeline of described water-purification plant.
Preferably, the water inlet of described high rate filter is provided with the first dosing pump.
Concrete, described water-purification plant comprises ultrafiltration raw water box, more medium filter, ultra-filtration equipment and reverse osmosis unit, ultra-filtration equipment is Nuo Ruite ultra-filtration equipment, reverse osmosis unit adopts LG-DOW anti-pollution reverse osmosis membrane, the water outlet of described water transfer pump is connected with the water-in pipeline of described ultrafiltration raw water box, the water outlet of described ultrafiltration raw water box is connected with the water inlet conduit of described more medium filter, the water outlet of described more medium filter is connected with the water-in pipeline of described ultra-filtration equipment, the water outlet of described ultra-filtration equipment is connected with the water-in pipeline of described reverse osmosis unit.
Preferably, the water inlet of described more medium filter is provided with the second dosing pump.
Preferably, the pipeline connecting the water outlet of described more medium filter and the water-in of described ultra-filtration equipment is provided with the 3rd dosing pump.
Preferably, described reverse osmosis unit water inlet is provided with dispersion agent dosing pump and reductive agent dosing pump.
Concrete, described steam turbine plant comprises turbine condenser, Oil Cooler of Steam Turbine, steam turbine air cooling device and machine envelope refrigerating unit, the entrance of cooling water pipeline that the water outlet of described water circulating pump seals refrigerating unit with described turbine condenser, described Oil Cooler of Steam Turbine, described steam turbine air cooling device and described machine is respectively connected, and described turbine condenser, described Oil Cooler of Steam Turbine, described steam turbine air cooling device are connected with the water-in pipeline of described circulating water cooling tower with the described machine envelope cooling water outlet of refrigerating unit.
Second object of the present invention is implemented by following technical scheme, circulating-water in thermal power plant Resource comprehensive utilization method, cooling tower moisturizing that it comprises the steps: (1); (2) circulating water treatment in cooling tower; (3) recirculating water purification process;
(1) cooling tower moisturizing: unboiled water is drawn by water utilities company pipeline, enters after high rate filter filters and delivers to circulating water screen well, then through the heat exchange of described circulating water screen well supply steam turbine plant, after heat exchange, described unboiled water sends into circulating water cooling tower; After the unboiled water that temperature is lower fills into recirculated water, Steam Turbine Condenser Vacuum degree can be improved, improve equipment generated energy,
(2) circulating water treatment in cooling tower: need every day continuous in described circulating water cooling tower tower basin or impact type on time to add sterilant and anti-incrustation corrosion inhibitor, the filling rate of described anti-incrustation corrosion inhibitor is 15-20ppm, add described sterilant and the ORP table installed new before reverse osmosis is adjusted to 450-550mv, find when the ORP table installed new before adding described sterilant and making described reverse osmosis is adjusted to 450-550mv through long-run test, reverse osmosis unit can not produce dirty stifled, regulate the recirculated water chlorine root <120ppm that the extraction water yield of the rate of water make-up of described circulating water cooling tower and water transfer pump makes in described circulating water cooling tower tower basin simultaneously, every day regularly adds sterilant and corrosion inhibiting and descaling agent in recirculated water, the main pre-bacteriological protection of sterilant, the growing of algae, regulate by the ORP table installed new before reverse osmosis, require that ORP table shows for 450-550mv, ultrafiltration is produced water and can be measured by SDI value, requires SDI<2, the corrosion inhibiting and descaling agent with corrosion mitigation and ant-scaling because sterilant is oxidizing bactericide, time excessive, equipment corrosion can be caused, so need be used to add medicament as recirculated water simultaneously.
(3) recirculating water purification process: to be delivered to by the described recirculated water in described circulating water cooling tower tower basin after water-purification plant carries out purifying treatment by described water transfer pump, conveying feedwater user uses.
In described step (1), to be annotated in described unboiled water continuously efficient flocculant (ProFlocTMC) by the first dosing pump of described high rate filter water inlet, filling rate is 2ppm, macromolecular substance in described unboiled water is condensed for group's particle, improves described high rate filter filtration efficiency.
Concrete, the described sterilant in described step (2) is trichloroisocyanuric acid or chlorine bleach liquor.
Described step (3) is specially, by described water transfer pump, the described recirculated water in described circulating water cooling tower tower basin is delivered to described ultrafiltration raw water box, after more medium filter process, deliver to ultra-filtration equipment again filter, after filtering, ultrafiltration is produced water and is then sent to reverse osmosis unit use; Wherein, need before described more medium filter, use the second dosing pump to annotate continuously described efficient flocculant (ProFlocTMC), filling rate is 2ppm, use the 3rd dosing pump to annotate continuously between described more medium filter and described ultra-filtration equipment dilute hydrochloric acid that mass concentration is 3-5%, described ultrafiltration is produced water pH regulator to 7.2-7.8, if it is too high that water pH value is produced in ultrafiltration, can cause end reverse osmosis unit fouling and clogging, it is too low that water pH value is produced in ultrafiltration, can cause water free chlorine etching apparatus in acid condition.
In described step (3), described ultrafiltration is produced before water enters described reverse osmosis unit, and the dispersion agent dosing pump dispersion agent PTP-0100 that annotates continuously need be used to avoid described reverse osmosis unit fouling and clogging, and filling rate is 4-5ppm; Also need to control chlorine residue by reductive agent dosing pump filling reductive agent, use described reductive agent dosing pump to add continuously, filling rate is 2-4ppm, and control at 130-170mv by aobvious for reverse osmosis body ORP table table, reverse osmosis produced water can for each watering technology point.If reverse osmosis body ORP table table is aobvious be greater than 170mv, then reverse osmosis membrane can be caused be oxidized, if reverse osmosis body ORP table table is aobvious be less than 130mv, then reductive agent can occurs and add excessive, cause that reverse osmosis membrane is dirty to be blocked up.
Described reductive agent is the sodium sulfite solution of mass concentration 10-15%.Sodium bisulfite is widely used as the reductibility medicament in Water Treatment technique, simultaneously cheaply can not cause too large processing pressure to downstream water treatment facility, configuration concentration of polymer solution 10-15% is advisable, and needs according to the allotment of dosing pump dosing capacity of water.
Described circulating-water in thermal power plant Resource comprehensive utilization method, also include backwash step, when the reverse osmosis pressure of described reverse osmosis unit can be cleaned higher than during 1.4MPa, on-line cleaning comprises pickling and alkali cleaning, first use citric acid pH value to be adjusted to 2-3 to start to start scavenging pump and carry out pickling, until pH value no longer rises, then described scavenging pump is stopped, drain liquid, sheet alkali is added again with after clean water reverse osmosis unit to neutrality, EDTA, alkali cleaning is carried out in dodecyl pump sodium sulfonate to on-line cleaning water tank, wherein said EDTA add-on is 1% of quality in described on-line cleaning water tank, described dodecyl pump sodium sulfonate add-on is 0.25% of quality in described on-line cleaning water tank, adding described alkali again regulates liquid pH value in described on-line cleaning water tank to be 12-13, start the cleaning of described scavenging pump, until pH value no longer declines, then described scavenging pump is stopped, drain liquid, with clean water reverse osmosis unit to neutral, so far on-line cleaning is complete.
The medicament filling rate unit mentioned in the present invention is ppm, specifically refers to that the mass concentration of corresponding medicament in water is produced in recirculated water or ultrafiltration.
The invention has the advantages that, it is that condenser cooling can gas clean-up that (1) unboiled water fills into recirculated water, promotes steam turbine operation efficiency; (2) unboiled water filled into can optimize cycle water, then is extracted out by recirculated water and use, and realizes taking out filling weighing apparatus and entering benign cycle, realizes cooling tower zero blowdown simultaneously; (3) for devices such as ultrafiltration after winter the recirculated water with condenser heat exchange being extracted out, not only realize condenser waste heat recovery, and according to equipment use explanation, unboiled water temperature controls under 26 DEG C of conditions, equipment water production rate is maximum, therefore, the unboiled water of the recirculated water of 25-28 DEG C in winter compared with 0-4 DEG C, is more conducive to ultrafiltration and reverse osmosis increases water production rate.
Accompanying drawing illustrates:
Fig. 1 is circulating-water in thermal power plant resource comprehensive utilization system structural representation.
High rate filter 1, circulating water screen well 2, water circulating pump 3, circulating water cooling tower 4, water transfer pump 5, turbine condenser 6, Oil Cooler of Steam Turbine 7, steam turbine air cooling device 8, machine envelope refrigerating unit 9, ultrafiltration raw water box 10, more medium filter 11, ultra-filtration equipment 12, reverse osmosis unit 13, the first dosing pump 14, second dosing pump 15,3rd dosing pump 16, dispersion agent dosing pump 17, reductive agent dosing pump 18.
Embodiment
Embodiment 1: circulating-water in thermal power plant resource comprehensive utilization system, it comprises high rate filter 1, circulating water screen well 2, water circulating pump 3, steam turbine plant, circulating water cooling tower 4, water transfer pump 5 and water-purification plant.Steam turbine plant comprises turbine condenser 6, Oil Cooler of Steam Turbine 7, steam turbine air cooling device 8 and machine envelope refrigerating unit 9.Water-purification plant comprises ultrafiltration raw water box 10, more medium filter 11, ultra-filtration equipment 12 and reverse osmosis unit 13, and ultra-filtration equipment 12 is Nuo Ruite ultra-filtration equipment, and reverse osmosis unit 13 adopts LG-DOW anti-pollution reverse osmosis membrane.The water inlet of high rate filter 1 is provided with the first dosing pump 14, the water outlet of high rate filter 1 is connected with the water-in pipeline of circulating water screen well 2, the water outlet of circulating water screen well 2 is connected with the water-in pipeline of water circulating pump 3, the water outlet of water circulating pump 3 respectively with turbine condenser 6, Oil Cooler of Steam Turbine 7, steam turbine air cooling device 8 is connected with the entrance of cooling water pipeline of machine envelope refrigerating unit 9, turbine condenser 6, Oil Cooler of Steam Turbine 7, steam turbine air cooling device 8 is connected with the water-in pipeline of circulating water cooling tower 4 with the machine envelope cooling water outlet of refrigerating unit 9, the tower basin water outlet of circulating water cooling tower 4 is connected with the water-in pipeline of water transfer pump 5, the water outlet of water transfer pump 5 is connected with the water-in pipeline of ultrafiltration raw water box 10, the water outlet of ultrafiltration raw water box 10 is connected with the water inlet conduit of more medium filter 11, the water inlet of more medium filter 11 is provided with the second dosing pump 15, the water outlet of more medium filter 11 is connected with the water-in pipeline of ultra-filtration equipment 12, the water outlet of ultra-filtration equipment 12 is connected with the water-in pipeline of reverse osmosis unit 13.The pipeline connecting the water outlet of more medium filter 11 and the water-in of ultra-filtration equipment 12 is provided with the 3rd dosing pump 16.Reverse osmosis unit 13 water inlet is provided with dispersion agent dosing pump 17 and reductive agent dosing pump 18.
Embodiment 2: utilize embodiment 1 circulating-water in thermal power plant resource comprehensive utilization system, the circulating-water in thermal power plant Resource comprehensive utilization method of enforcement, cooling tower moisturizing that it comprises the steps: (1); (2) circulating water treatment in cooling tower; (3) recirculating water purification process;
(1) cooling tower moisturizing: unboiled water is drawn by water utilities company pipeline, enter after high rate filter 1 filters and deliver to circulating water screen well 2, then supply steam turbine plant heat exchange through circulating water screen well 2, heat exchange epigenetic water sends into circulating water cooling tower 4; After the unboiled water that temperature is lower fills into recirculated water, Steam Turbine Condenser Vacuum degree can be improved, improve equipment generated energy.By the continuous efficient flocculant (ProFlocTMC) of annotating in unboiled water of the first dosing pump 14 of high rate filter 1 water inlet, filling rate is 2ppm, is group's particle, improves high rate filter 1 filtration efficiency by the macromolecular substance cohesion in unboiled water.
(2) circulating water treatment in cooling tower: need every day continuous in circulating water cooling tower 4 tower basin or impact type on time to add sterilant and anti-incrustation corrosion inhibitor, the filling rate of anti-incrustation corrosion inhibitor is 15ppm, add sterilant and the ORP table installed new before reverse osmosis is adjusted to 450mv, find when the ORP table installed new before adding sterilant and making reverse osmosis is adjusted to 450mv through long-run test, reverse osmosis unit 13 can not produce dirty stifled, the adjustment rate of water make-up of circulating water cooling tower 4 and the extraction water yield of water transfer pump 5 make the recirculated water chlorine root <120ppm in circulating water cooling tower 4 tower basin simultaneously, sterilant is trichloroisocyanuric acid.
(3) recirculating water purification process: the recirculated water in circulating water cooling tower 4 tower basin is delivered to ultrafiltration raw water box 10 by water transfer pump 5, after more medium filter 11 processes, deliver to ultra-filtration equipment 12 again to filter, filtration rear ultrafiltration product water is then sent to reverse osmosis unit 13 and uses; Wherein, use the second dosing pump 15 before more medium filter 11 is needed to annotate continuously efficient flocculant (ProFlocTMC), filling rate is 2ppm, use between more medium filter 11 and ultra-filtration equipment 12 the 3rd dosing pump 16 annotate continuously mass concentration be 3% dilute hydrochloric acid, ultrafiltration is produced water pH regulator to 7.2, if it is too high that water pH value is produced in ultrafiltration, can cause end reverse osmosis unit 13 fouling and clogging, it is too low that water pH value is produced in ultrafiltration, can cause water free chlorine etching apparatus in acid condition.
Before ultrafiltration product water enters reverse osmosis unit 13, dispersion agent dosing pump 17 continuous filling dispersion agent PTP-0100 need be used to avoid reverse osmosis unit 13 fouling and clogging, and filling rate is 4ppm; Also need by reductive agent dosing pump 18 annotate mass concentration 10% sodium sulfite solution control chlorine residue, sodium bisulfite is widely used as the reductibility medicament in Water Treatment technique, simultaneously cheaply can not cause too large processing pressure to downstream water treatment facility, configuration concentration of polymer solution needs according to the allotment of dosing pump dosing capacity of water.Use reductive agent dosing pump 18 to add sodium sulfite solution continuously, filling rate is 2ppm, and control at 130-170mv by aobvious for reverse osmosis body ORP table table, reverse osmosis produced water can for each watering technology point.If reverse osmosis body ORP table table is aobvious be greater than 170mv, then reverse osmosis membrane can be caused be oxidized, if reverse osmosis body ORP table table is aobvious be less than 130mv, then reductive agent can occurs and add excessive, cause that reverse osmosis membrane is dirty to be blocked up.
Embodiment 3: utilize embodiment 1 circulating-water in thermal power plant resource comprehensive utilization system, the circulating-water in thermal power plant Resource comprehensive utilization method of enforcement, cooling tower moisturizing that it comprises the steps: (1); (2) circulating water treatment in cooling tower; (3) recirculating water purification process;
(1) cooling tower moisturizing: unboiled water is drawn by water utilities company pipeline, enter after high rate filter 1 filters and deliver to circulating water screen well 2, then supply steam turbine plant heat exchange through circulating water screen well 2, heat exchange epigenetic water sends into circulating water cooling tower 4; After the unboiled water that temperature is lower fills into recirculated water, Steam Turbine Condenser Vacuum degree can be improved, improve equipment generated energy.By the continuous efficient flocculant (ProFlocTMC) of annotating in unboiled water of the first dosing pump 14 of high rate filter 1 water inlet, filling rate is 2ppm, is group's particle, improves high rate filter 1 filtration efficiency by the macromolecular substance cohesion in unboiled water.
(2) circulating water treatment in cooling tower: need every day continuous in circulating water cooling tower 4 tower basin or impact type on time to add sterilant and anti-incrustation corrosion inhibitor, the filling rate of anti-incrustation corrosion inhibitor is 20ppm, add sterilant and the ORP table installed new before reverse osmosis is adjusted to 550mv, find when the ORP table installed new before adding sterilant and making reverse osmosis is adjusted to 550mv through long-run test, reverse osmosis unit 13 can not produce dirty stifled, the adjustment rate of water make-up of circulating water cooling tower 4 and the extraction water yield of water transfer pump 5 make the recirculated water chlorine root <120ppm in circulating water cooling tower 4 tower basin simultaneously, sterilant is chlorine bleach liquor.
(3) recirculating water purification process: the recirculated water in circulating water cooling tower 4 tower basin is delivered to ultrafiltration raw water box 10 by water transfer pump 5, after more medium filter 11 processes, deliver to ultra-filtration equipment 12 again to filter, filtration rear ultrafiltration product water is then sent to reverse osmosis unit 13 and uses; Wherein, use the second dosing pump 15 before more medium filter 11 is needed to annotate continuously efficient flocculant (ProFlocTMC), filling rate is 2ppm, use between more medium filter 11 and ultra-filtration equipment 12 the 3rd dosing pump 16 annotate continuously mass concentration be 5% dilute hydrochloric acid, ultrafiltration is produced water pH regulator to 7.8, if it is too high that water pH value is produced in ultrafiltration, can cause end reverse osmosis unit 13 fouling and clogging, it is too low that water pH value is produced in ultrafiltration, can cause water free chlorine etching apparatus in acid condition.
Before ultrafiltration product water enters reverse osmosis unit 13, dispersion agent dosing pump 17 continuous filling dispersion agent PTP-0100 need be used to avoid reverse osmosis unit 13 fouling and clogging, and filling rate is 5ppm; Also need by reductive agent dosing pump 18 annotate mass concentration 15% sodium sulfite solution control chlorine residue, sodium bisulfite is widely used as the reductibility medicament in Water Treatment technique, simultaneously cheaply can not cause too large processing pressure to downstream water treatment facility, configuration concentration of polymer solution needs according to the allotment of dosing pump dosing capacity of water.Use reductive agent dosing pump 18 to add sodium sulfite solution continuously, filling rate is 4ppm, and control at 130-170mv by aobvious for reverse osmosis body ORP table table, reverse osmosis produced water can for each watering technology point.If reverse osmosis body ORP table table is aobvious be greater than 170mv, then reverse osmosis membrane can be caused be oxidized, if reverse osmosis body ORP table table is aobvious be less than 130mv, then reductive agent can occurs and add excessive, cause that reverse osmosis membrane is dirty to be blocked up.
When the reverse osmosis pressure of reverse osmosis unit 13 can be cleaned higher than during 1.4MPa, on-line cleaning comprises pickling and alkali cleaning, first use citric acid pH value to be adjusted to 2-3 to start to start scavenging pump and carry out pickling, until pH value no longer rises, then scavenging pump is stopped, drain liquid, sheet alkali is added again with after clean water reverse osmosis unit to neutrality, EDTA, alkali cleaning is carried out in dodecyl pump sodium sulfonate to on-line cleaning water tank, wherein EDTA add-on is 1% of quality in on-line cleaning water tank, dodecyl pump sodium sulfonate add-on is 0.25% of quality in on-line cleaning water tank, adding sheet alkali again regulates liquid pH value in on-line cleaning water tank to be 12-13, start scavenging pump cleaning, until pH value no longer declines, then scavenging pump is stopped, drain liquid, with clean water reverse osmosis unit to neutral, so far on-line cleaning is complete.
Claims (14)
1. circulating-water in thermal power plant resource comprehensive utilization system, it is characterized in that, it comprises high rate filter, circulating water screen well, water circulating pump, steam turbine plant, circulating water cooling tower, water transfer pump and water-purification plant, the water outlet of described high rate filter is connected with the water-in pipeline of described circulating water screen well, the water outlet of described circulating water screen well is connected with the water-in pipeline of described water circulating pump, the water outlet of described water circulating pump is connected with the entrance of cooling water pipeline of described steam turbine plant, the cooling water outlet of described steam turbine plant is connected with the water-in pipeline of described circulating water cooling tower, the tower basin water outlet of described circulating water cooling tower is connected with the water-in pipeline of described water transfer pump, the water outlet of described water transfer pump is connected with the water-in pipeline of described water-purification plant.
2. circulating-water in thermal power plant resource comprehensive utilization system according to claim 1, is characterized in that, the water inlet of described high rate filter is provided with the first dosing pump.
3. circulating-water in thermal power plant resource comprehensive utilization system according to claim 1 and 2, it is characterized in that, described water-purification plant comprises ultrafiltration raw water box, more medium filter, ultra-filtration equipment and reverse osmosis unit, the water outlet of described water transfer pump is connected with the water-in pipeline of described ultrafiltration raw water box, the water outlet of described ultrafiltration raw water box is connected with the water inlet conduit of described more medium filter, the water outlet of described more medium filter is connected with the water-in pipeline of described ultra-filtration equipment, the water outlet of described ultra-filtration equipment is connected with the water-in pipeline of described reverse osmosis unit.
4. circulating-water in thermal power plant resource comprehensive utilization system according to claim 3, is characterized in that, the water inlet of described more medium filter is provided with the second dosing pump.
5. circulating-water in thermal power plant resource comprehensive utilization system according to claim 3, is characterized in that, the pipeline connecting the water outlet of described more medium filter and the water-in of described ultra-filtration equipment is provided with the 3rd dosing pump.
6. circulating-water in thermal power plant resource comprehensive utilization system according to claim 3, is characterized in that, described reverse osmosis unit water inlet is provided with dispersion agent dosing pump and reductive agent dosing pump.
7. circulating-water in thermal power plant resource comprehensive utilization system according to claim 1 and 2, it is characterized in that, described steam turbine plant comprises turbine condenser, Oil Cooler of Steam Turbine, steam turbine air cooling device and machine envelope refrigerating unit, the water outlet of described water circulating pump respectively with described turbine condenser, described Oil Cooler of Steam Turbine, described steam turbine air cooling device is connected with the entrance of cooling water pipeline of described machine envelope refrigerating unit, described turbine condenser, described Oil Cooler of Steam Turbine, described steam turbine air cooling device is connected with the water-in pipeline of described circulating water cooling tower with the described machine envelope cooling water outlet of refrigerating unit.
8. circulating-water in thermal power plant Resource comprehensive utilization method, is characterized in that, cooling tower moisturizing that it comprises the steps: (1); (2) circulating water treatment in cooling tower; (3) recirculating water purification process;
(1) cooling tower moisturizing: unboiled water is drawn by water utilities company pipeline, enters after high rate filter filters and delivers to circulating water screen well, then through the heat exchange of described circulating water screen well supply steam turbine plant, after heat exchange, described unboiled water sends into circulating water cooling tower;
(2) circulating water treatment in cooling tower: need every day continuous in described circulating water cooling tower tower basin or impact type on time to add sterilant and anti-incrustation corrosion inhibitor, the filling rate of described anti-incrustation corrosion inhibitor is 15-20ppm, add described sterilant and the ORP table installed new before reverse osmosis is adjusted to 450-550mv, regulate the recirculated water chlorine root <120ppm that the extraction water yield of the rate of water make-up of described circulating water cooling tower and water transfer pump makes in described circulating water cooling tower tower basin simultaneously;
(3) recirculating water purification process: to be delivered to by the described recirculated water in described circulating water cooling tower tower basin after water-purification plant carries out purifying treatment by described water transfer pump, conveying feedwater user uses.
9. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 8, it is characterized in that, in described step (1), to be annotated in described unboiled water continuously efficient flocculant by the first dosing pump of described high rate filter water inlet, filling rate is 2ppm.
10. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 8, is characterized in that, the described sterilant in described step (2) is trichloroisocyanuric acid or chlorine bleach liquor.
11. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 8, it is characterized in that, described step (3) is specially, by described water transfer pump, the described recirculated water in described circulating water cooling tower tower basin is delivered to described ultrafiltration raw water box, after more medium filter process, deliver to ultra-filtration equipment again filter, after filtering, ultrafiltration is produced water and is then sent to reverse osmosis unit use; Wherein, need before described more medium filter, use the second dosing pump to annotate continuously described efficient flocculant, filling rate is 2ppm, use the 3rd dosing pump to annotate continuously between described more medium filter and described ultra-filtration equipment dilute hydrochloric acid that mass concentration is 3-5%, produces water pH regulator to 7.2-7.8 by described ultrafiltration.
12. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 11, it is characterized in that, in described step (3), before described ultrafiltration product water enters described reverse osmosis unit, dispersion agent dosing pump need be used to annotate continuously dispersion agent, and filling rate is 4-5ppm; Also need to control chlorine residue by reductive agent dosing pump filling reductive agent, use described reductive agent dosing pump to add continuously, filling rate is 2-4ppm, and control at 130-170mv by aobvious for reverse osmosis body ORP table table, reverse osmosis produced water can for each watering technology point.
13. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 12, is characterized in that, described reductive agent is the sodium sulfite solution of mass concentration 10-15%.
14. circulating-water in thermal power plant Resource comprehensive utilization method according to claim 11-13 any one, it is characterized in that, it also includes backwash step, when the reverse osmosis pressure of described reverse osmosis unit can be cleaned higher than during 1.4MPa, on-line cleaning comprises pickling and alkali cleaning, first use citric acid pH value to be adjusted to 2-3 to start to start scavenging pump and carry out pickling, until pH value no longer rises, then described scavenging pump is stopped, drain liquid, sheet alkali is added again with after clean water reverse osmosis unit to neutrality, EDTA, alkali cleaning is carried out in dodecyl pump sodium sulfonate to on-line cleaning water tank, wherein said EDTA add-on is 1% of quality in described line cleaning water tank, described dodecyl pump sodium sulfonate add-on is 0.25% of quality in described on-line cleaning water tank, adding described alkali again regulates liquid pH value in described on-line cleaning water tank to be 12-13, start the cleaning of described scavenging pump, until pH value no longer declines, then described scavenging pump is stopped, drain liquid, with clean water reverse osmosis unit to neutral, so far on-line cleaning is complete.
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| CN109437348A (en) * | 2018-12-27 | 2019-03-08 | 大唐贵州发耳发电有限公司 | A kind of thermal power generation unit recirculated water sewage blocking device |
| CN110156275A (en) * | 2019-06-13 | 2019-08-23 | 西安西热水务环保有限公司 | A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method |
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| CN113701519A (en) * | 2021-08-16 | 2021-11-26 | 中国能源建设集团江苏省电力设计院有限公司 | Method for optimizing circulating water system under condenser with main steam turbine and small steam turbine arranged separately |
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| CN105717054A (en) * | 2016-02-22 | 2016-06-29 | 石家庄给源环保科技有限公司 | Detection method and detection device for online detection of scale and corrosion inhibitor concentration in circulating cooling water and circulating cooling water treatment control system |
| CN105717054B (en) * | 2016-02-22 | 2019-06-07 | 石家庄给源环保科技有限公司 | The detection method of anti-incrustation corrosion inhibitor concentration, detection device and circulating water cooling treatment control system in on-line checking recirculated cooling water |
| CN106395762A (en) * | 2016-06-08 | 2017-02-15 | 赤峰中色锌业有限公司 | Water supply and circulating water systems applied to roasting of zinc for acid making |
| CN106395762B (en) * | 2016-06-08 | 2018-03-30 | 赤峰中色锌业有限公司 | The feedwater of zinc roasting relieving haperacidity, circulation |
| CN107434316A (en) * | 2017-06-29 | 2017-12-05 | 平湖热电厂 | A kind of reutilization system of recirculated water in RO counter-infiltrations |
| CN107487964A (en) * | 2017-10-09 | 2017-12-19 | 安徽佳明环保科技股份有限公司 | A kind of high-concentration organic wastewater treatment system |
| CN109437348A (en) * | 2018-12-27 | 2019-03-08 | 大唐贵州发耳发电有限公司 | A kind of thermal power generation unit recirculated water sewage blocking device |
| CN110156275A (en) * | 2019-06-13 | 2019-08-23 | 西安西热水务环保有限公司 | A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method |
| CN111747561A (en) * | 2020-06-10 | 2020-10-09 | 华电电力科学研究院有限公司 | Automatic control system for water quality of high-level water collecting cooling tower of thermal power plant |
| CN112033211A (en) * | 2020-09-04 | 2020-12-04 | 凌源钢铁股份有限公司 | Condenser online cleaning method |
| CN113701519A (en) * | 2021-08-16 | 2021-11-26 | 中国能源建设集团江苏省电力设计院有限公司 | Method for optimizing circulating water system under condenser with main steam turbine and small steam turbine arranged separately |
| CN113701519B (en) * | 2021-08-16 | 2023-09-29 | 中国能源建设集团江苏省电力设计院有限公司 | Method for optimizing circulating water system under condenser separately arranged on main turbine and small turbine |
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