CN103613219A - Device and method for purifying, deoxidizing and decarbonizing internal generator cooling water - Google Patents
Device and method for purifying, deoxidizing and decarbonizing internal generator cooling water Download PDFInfo
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- CN103613219A CN103613219A CN201310570933.XA CN201310570933A CN103613219A CN 103613219 A CN103613219 A CN 103613219A CN 201310570933 A CN201310570933 A CN 201310570933A CN 103613219 A CN103613219 A CN 103613219A
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Abstract
The invention relates to a device and a method for purifying, deoxidizing and decarbonizing internal generator cooling water. The device provided by the invention comprises an internal generator cooling water purifying unit and a two-stage membrane deoxidizing and decarbonizing unit, wherein the internal cooling water purifying unit is composed of an RNa type cation exchange tower, an RH type cation exchange tower, a first ROH type anion exchange tower, a second ROH type anion exchange tower, a precise resin trap, a flow regulation and control system and a water quality monitoring system; the two-stage membrane deoxidizing and decarbonizing unit is composed of an intermediate water tank, a circulating water pump, a compressed inert gas system, a gas-liquid membrane two-stage separation system, a gas monitoring system and a booster water pump. The device and the method provided by the invention are used for directly or indirectly and comprehensively regulating and controlling such indexes of internal cooling water as pH value, conductivity, copper content, dissolved oxygen and the like so as to prevent the corrosion of a generator copper conductor and ensure the safe and stable operation of a generating set.
Description
Technical field
The present invention relates to chemistry and environmental technology and energy technology field, relate in particular to a kind of generator internal cooling water and purify and deoxygenation decarbonization device and method.
Background technology
The corrosion of high-rating generator coil copper conductor depends primarily on the water quality of interior water coolant.The make up water of interior water coolant is generally the de-mineralized water of power plant, and desalination electrical conductivity of water is lower, and contains saturated dissolved oxygen and carbon dioxide, and the former can form the negative electrode of copper conductor corrosion galvanic cell, causes oozing out of cupric ion, makes copper conductor coils produce corrosion; The latter can cause the pH of de-mineralized water to decline, and makes the corrosion region of copper in chemically unstable, accelerates the corrosion of copper conductor.
At present, bad because of generator internal cooling water matter, cause that the probability of substantial equipment fault has caused the great attention in industry.The mode that internally quality of cooling water regulates and controls has single tower mixed bed method, ion-exchange+alkali adding method, double tower RNa type+RH type mixed bed method, water tank to change water adjusting method, add corrosion inhibitor etc.Existing industry standard clearly proposes not recommend adoption and adds inhibiter regulation and control water quality, but adopt the pH value of the interior water coolant of above-mentioned all kinds of technology acquisitions by the blending ratio of cationic, anionic exchange resin, to be determined, be in operation and do not possess adjustable function, regenerative operation difficulty.
Summary of the invention
In view of this, the invention provides a kind of generator internal cooling water purifies and deoxygenation decarbonization device and method, by adopting multiple bed system structure, realized according to system monitoring situation water outlet pH value, carry out balanced adjusting targetedly, and simplified regenerative operation program, thereby realized the object to the direct or indirect combined regulating of the indexs such as pH, specific conductivity, copper content and dissolved oxygen.
Generator internal cooling water provided by the invention purifies and deoxygenation decarbonization device comprises generator internal cooling water clean unit and secondary film deoxygenation decarburization unit, wherein:
Described interior cooling water purification unit is comprised of RNa type cation exchange tower, RH type cation exchange tower, a ROH type anion exchange tower, the 2nd ROH type anion exchange tower, accurate resin grabber, flow control system, water quality monitoring system; The water outlet of described RNa type cation exchange tower is connected with the water-in of a described ROH type anion exchange tower; The water outlet of described RH type cation exchange tower is connected with the water-in of described the 2nd ROH type anion exchange tower; The water outlet of a described ROH type anion exchange tower and the 2nd ROH type anion exchange tower is connected with accurate resin grabber water-in, and described accurate resin grabber water outlet is connected with the water-in of described secondary film deoxygenation decarburization unit.
Alternatively, RNa type cation exchange tower, RH type cation exchange tower, a ROH type anion exchange tower, the 2nd ROH type anion exchange tower, adopt the structure of " two tower four Room " to form.
Alternatively, RNa type cation exchange tower, RH type cation exchange tower, a ROH type anion exchange tower, the 2nd ROH type anion exchange tower, adopt the structure of " four tower four Room " to form.
Described flow control system is comprised of valve and under meter; Described water quality monitoring system is comprised of online pH meter, online conductivity meter, online cupric ion instrument.
Described secondary film deoxygenation decarburization unit is comprised of intermediate water tank, water circulating pump, compressed inert system, gas-liquid film the second-order separation system, gas monitoring system, product water tank and booster water pump.
Described gas monitoring system is comprised of online dissolved oxygen meter, online carbonic acid gas instrument.
Described gas-liquid film the second-order separation system adopts microfiltration membrane and ultra-filtration membrane the second-order separation technique.
Described microfiltration membrane and ultra-filtration membrane adopt pottery, poly-the third ethene of hydrophobicity or polyethylene material.
Described microfiltration membrane adopts hollow fiber microfiltration membrane, rolling microfiltration membrane or plate and frame microfiltration membrane; Described ultra-filtration membrane adopts hollow fiber ultrafiltration membrane, rolling ultrafiltration membrane or plate and frame ultra-filtration membrane.
Generator internal cooling water provided by the invention purifies and deoxygenation decarbonization method, comprises the steps:
Step 1, interior water coolant is injected respectively to RNa type cation exchange tower, RH type cation exchange tower with displacement positively charged ion;
Step 3, by from a ROH type anion exchange tower and the 2nd ROH type anion exchange tower inner cold water out conflux, by flow control system, water quality monitoring system regulating water quality;
Step 4, the interior water coolant after above-mentioned adjusting is injected to accurate resin grabber;
Step 5, the water outlet of described accurate resin grabber is sent into intermediate water tank, and utilize water circulating pump that the interior water coolant of intermediate water tank is delivered to one-level gas-liquid film separating system, and isolated dissolved oxygen and carbon dioxide and compressed inert are discharged;
Step 6, described one-level gas-liquid film separating system isolated to interior water coolant send into secondary gas-liquid film separating system, further separated in dissolving oxygen and carbon dioxide in water coolant;
Step 7, will send into airtight product water tank through the interior water coolant of described secondary gas-liquid film separating system, then by topping-up pump, the interior water coolant in airtight product water tank is delivered to interior cooling water tank.
The present invention can be by the flow control system of installing respectively at the upper and lower two Room feed-water ends of cation exchange tower, the water quality monitoring system of installing in ROH type anion exchange tower water side, the on-line control of realization to water quality, meets industry standard requirement to meet device effluent quality.
In addition, the present invention adopts PVDF tubular fibre gas-water separation membrane module to carry out the deoxygenation carbonization treatment of interior water coolant, in realizing, in water coolant, remove when oxygen and carbon dioxide, make the be reduced to≤30 μ g/L of dissolved oxygen in interior water coolant, carbon dioxide gas body burden in simultaneously lowering in water coolant, in realizing, the pH value of water coolant is 8.0～9.0 (25 ℃), slows down the corrosion of interior water coolant to copper conductor.Or,
Adopt inorganic ceramic gas-water separation membrane module to carry out the deoxygenation carbonization treatment of interior water coolant, in realizing, in water coolant, remove when oxygen and carbon dioxide, make the be reduced to≤10 μ g/L of dissolved oxygen in interior water coolant, carbon dioxide gas body burden in simultaneously lowering in water coolant, in realizing, the pH value of water coolant is >=8.3 (25 ℃), makes the water-quality guideline of interior water coolant more idealized.
In sum, apparatus and method provided by the invention can be carried out from master regulation generator internal cooling water pH value, specific conductivity, dissolved oxygen, carbonic acid gas indices, thereby avoided because a certain water-quality guideline is when defective, the situation that needs not timing that device is logged off, and avoided carrying out loaded down with trivial details reproduction operation or directly changed resin producing extra financial loss, and avoided waste and old resin can not deal carefully with the situation that causes environmental pollution, and can effectively prevent the corrosion of copper wires in generator.In addition, apparatus and method of the present invention realized in Generator Set in effective reuse of water coolant, reduced water loss, and guaranteed the safe operation of generator and meet the technical requirements of industry standard.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The generator internal cooling water that Fig. 1 provides for one embodiment of the invention purifies and the structural representation of deoxygenation decarbonization device.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
The generator internal cooling water that Fig. 1 provides for one embodiment of the invention purifies and the structural representation of deoxygenation decarbonization device, as shown in Figure 1, the generator internal cooling water of the present embodiment purifies and deoxygenation decarbonization device comprises generator internal cooling water clean unit 1 and secondary film deoxygenation decarburization unit 2, wherein
Described interior cooling water purification unit 1 is comprised of RNa type cation exchange tower 11, RH type cation exchange tower 12, a ROH type anion exchange tower 13, the 2nd ROH type anion exchange tower 14, accurate resin grabber 15, flow control system, water quality monitoring system; The water outlet of described RNa type cation exchange tower 11 is connected with the water-in of a described ROH type anion exchange tower 13; The water outlet of described RH type cation exchange tower 12 is connected with the water-in of described the 2nd ROH type anion exchange tower 14; The water outlet of a described ROH type anion exchange tower 13 and the 2nd ROH type anion exchange tower 14 is connected with accurate resin grabber 15 water-ins, and described accurate resin grabber 15 water outlets are connected with the water-in of described secondary film deoxygenation decarburization unit 2.
Alternatively, RNa type cation exchange tower 11, RH type cation exchange tower 12, a ROH type anion exchange tower 13, the 2nd ROH type anion exchange tower 14, adopt the structure of " two tower four Room " to form.
Alternatively, RNa type cation exchange tower 11, RH type cation exchange tower 12, a ROH type anion exchange tower 13, the 2nd ROH type anion exchange tower 14, adopt the structure of " four tower four Room " to form.
Described flow control system is comprised of valve and under meter; Described water quality monitoring system is comprised of online pH meter, online conductivity meter, online cupric ion instrument.
Described secondary film deoxygenation decarburization unit 2 is comprised of intermediate water tank 21, water circulating pump 22, compressed inert system 23, gas-liquid film the second-order separation system 24, gas monitoring system 25, product water tank 26 and booster water pump 27.
Alternatively, described gas monitoring system 25 is comprised of online dissolved oxygen meter, online carbonic acid gas instrument.
Described gas-liquid film the second-order separation system 24 adopts micro-filtration and ultrafiltration the second-order separation technique.
Described micro-filtration and ultrafiltration the second-order separation process using microfiltration membrane and ultra-filtration membrane.
Described microfiltration membrane and ultra-filtration membrane adopt pottery, poly-the third ethene of hydrophobicity or polyethylene material.
Described microfiltration membrane adopts hollow fiber microfiltration membrane, rolling microfiltration membrane or plate and frame microfiltration membrane; Described ultra-filtration membrane adopts hollow fiber ultrafiltration membrane, rolling ultrafiltration membrane or plate and frame ultra-filtration membrane.
Generator internal cooling water provided by the invention purifies and deoxygenation decarbonization method, comprises the steps:
Step 1, interior water coolant is injected respectively to RNa type cation exchange tower, RH type cation exchange tower with displacement positively charged ion;
Step 3, by from a ROH type anion exchange tower and the 2nd ROH type anion exchange tower inner cold water out conflux, by flow control system, water quality monitoring system regulating water quality;
Step 4, the interior water coolant after above-mentioned adjusting is injected to accurate resin grabber;
Step 5, the water outlet of described accurate resin grabber is sent into intermediate water tank, and utilize water circulating pump that the interior water coolant of intermediate water tank is delivered to one-level gas-liquid film separating system, and isolated dissolved oxygen and carbon dioxide and compressed inert are discharged;
Step 6, described one-level gas-liquid film separating system isolated to interior water coolant send into secondary gas-liquid film separating system, further separated in dissolving oxygen and carbon dioxide in water coolant;
Step 7, will send into airtight product water tank through the inner cold water of described secondary gas-liquid film separating system, then by topping-up pump, the interior water coolant in airtight product water tank is delivered to interior cooling water tank.
Below provide 2 embodiment of the inventive method:
Embodiment mono-:
The concrete steps of a kind of generator internal cooling water purification and deoxygenation decarbonization method are as follows successively:
Interior water coolant is introduced into independently RNa type cation exchange tower, RH type cation exchange tower, the cupric ion in exchange in water coolant.The interior water coolant of processing through RNa type cation exchange tower, by after flow monitoring and adjusting device regulating pondage, enters a ROH type anion exchange tower; The interior water coolant of processing through RH type cation exchange tower, by after flow monitoring and adjusting device regulating pondage, enters the 2nd ROH type anion exchange tower; The water outlet of two groups of ROH type anion exchange towers is confluxed, and making the content of copper ion in interior water coolant is≤20 μ g/L, specific conductivity 0.4～2.0 μ S/cm (25 ℃); Adopt PVDF hollow fiber separation membrane component to carry out the deoxygenation carbonization treatment of interior water coolant the interior water coolant after regulating again; Interior water coolant is under the effect of pressure, flow out in outside through film, oxygen in interior water coolant and carbon dioxide are delivered to the inner side of film under the effect of compressed air stream, discharge with compressed nitrogen, thereby in water coolant, remove when oxygen and carbon dioxide in realizing, make the be reduced to≤30 μ g/L of dissolved oxygen in interior water coolant, carbon dioxide gas body burden in simultaneously lowering in water coolant, in realizing, the pH value of water coolant is 8.0～9.0 (25 ℃), slows down the corrosion of interior water coolant to copper conductor.
Embodiment bis-:
The concrete steps of a kind of generator internal cooling water purification and deoxygenation decarbonization method are as follows successively:
Interior water coolant is introduced into independently RNa type cation exchange tower, RH type cation exchange tower, the cupric ion in exchange in water coolant.The interior water coolant of processing through RNa type cation exchange tower, by after flow monitoring and adjusting device regulating pondage, enters a ROH type anion exchange tower; The interior water coolant of processing through RH type cation exchange tower, by after flow monitoring and adjusting device regulating pondage, enters the 2nd ROH type anion exchange tower; The water outlet of two groups of ROH type anion exchange towers is confluxed, and making the content of copper ion in interior water coolant is≤15 μ g/L, specific conductivity≤0.8 μ S/cm (25 ℃); Adopt inorganic ceramic separating film module to carry out the deoxygenation carbonization treatment of interior water coolant the interior water coolant after regulating again; Interior water coolant is under the effect of pressure, flow out in outside through film, oxygen in interior water coolant and carbon dioxide are delivered to the inner side of film under the effect of compressed air stream, discharge with compressed nitrogen, thereby in water coolant, remove when oxygen and carbon dioxide in realizing, make the be reduced to≤10 μ g/L of dissolved oxygen in interior water coolant, carbon dioxide gas body burden in simultaneously lowering in water coolant, in realizing, the pH value of water coolant is >=8.3 (25 ℃), slows down the corrosion of interior water coolant to copper conductor.
In sum, apparatus and method provided by the invention can be carried out from master regulation generator internal cooling water pH value, specific conductivity, dissolved oxygen, carbonic acid gas indices, thereby avoided because a certain water-quality guideline is when defective, the situation that needs not timing that device is logged off, and avoided carrying out loaded down with trivial details reproduction operation or directly changed resin producing extra financial loss, and avoided waste and old resin can not deal carefully with the situation that causes environmental pollution, and can effectively prevent the corrosion of copper wires in generator.In addition, apparatus and method of the present invention realized in Generator Set in effective reuse of water coolant, reduced water loss, and guaranteed the safe operation of generator and meet the technical requirements of industry standard.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement, and these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. generator internal cooling water purifies and a deoxygenation decarbonization device, it is characterized in that, described device comprises generator internal cooling water clean unit and secondary film deoxygenation decarburization unit.
2. generator internal cooling water according to claim 1 purifies and deoxygenation decarbonization device, it is characterized in that, described interior cooling water purification unit is comprised of RNa type cation exchange tower, RH type cation exchange tower, a ROH type anion exchange tower, the 2nd ROH type anion exchange tower, accurate resin grabber, flow control system, water quality monitoring system; The water outlet of described RNa type cation exchange tower is connected with the water-in of a described ROH type anion exchange tower; The water outlet of described RH type cation exchange tower is connected with the water-in of described the 2nd ROH type anion exchange tower; The water outlet of a described ROH type anion exchange tower and the 2nd ROH type anion exchange tower is connected with accurate resin grabber water-in, and described accurate resin grabber water outlet is connected with the water-in of described secondary film deoxygenation decarburization unit.
3. generator internal cooling water according to claim 2 purifies and deoxygenation decarbonization device, it is characterized in that, RNa type cation exchange tower, RH type cation exchange tower, a ROH type anion exchange tower, the 2nd ROH type anion exchange tower, adopt the structure of " two tower four Room " or " four tower four Room " to form.
4. generator internal cooling water according to claim 2 purifies and deoxygenation decarbonization device, it is characterized in that, described flow control system is comprised of valve and under meter; Described water quality monitoring system is comprised of online pH meter, online conductivity meter, online cupric ion instrument.
5. generator internal cooling water according to claim 1 purifies and deoxygenation decarbonization device, it is characterized in that, described secondary film deoxygenation decarburization unit is comprised of intermediate water tank, water circulating pump, compressed inert system, gas-liquid film the second-order separation system, gas monitoring system, product water tank and booster water pump.
6. according to generator internal cooling water according to claim 6, purify and deoxygenation decarbonization device, it is characterized in that, described gas monitoring system is comprised of online dissolved oxygen meter, online carbonic acid gas instrument.
7. generator internal cooling water according to claim 6 purifies and deoxygenation decarbonization device, it is characterized in that, described gas-liquid film the second-order separation system adopts microfiltration membrane and ultra-filtration membrane the second-order separation technique.
8. generator internal cooling water according to claim 9 purifies and deoxygenation decarbonization device, it is characterized in that, described microfiltration membrane and ultra-filtration membrane adopt pottery, poly-the third ethene of hydrophobicity or polyethylene material.
9. generator internal cooling water according to claim 9 purifies and deoxygenation decarbonization device, it is characterized in that, described microfiltration membrane adopts hollow fiber microfiltration membrane, rolling microfiltration membrane or plate and frame microfiltration membrane; Described ultra-filtration membrane adopts hollow fiber ultrafiltration membrane, rolling ultrafiltration membrane or plate and frame ultra-filtration membrane.
10. generator internal cooling water purifies and a deoxygenation decarbonization method, it is characterized in that, described method comprises the steps:
Step 1, interior water coolant is injected respectively to RNa type cation exchange tower, RH type cation exchange tower with displacement positively charged ion;
Step 2, will inject a ROH type anion exchange tower with displacement negatively charged ion from RNa type cation exchange tower interior water coolant out; To inject the 2nd ROH type anion exchange tower with displacement negatively charged ion from RH type cation exchange tower interior water coolant out;
Step 3, by from a ROH type anion exchange tower and the 2nd ROH type anion exchange tower interior water coolant out conflux, by flow control system, water quality monitoring system regulating water quality;
Step 4, the interior water coolant after above-mentioned adjusting is injected to accurate resin grabber;
Step 5, the water outlet of described accurate resin grabber is sent into intermediate water tank, and utilize water circulating pump that the interior water coolant of intermediate water tank is delivered to one-level gas-liquid film separating system, and isolated dissolved oxygen and carbon dioxide and compressed inert are discharged;
Step 6, described one-level gas-liquid film separating system isolated to interior water coolant send into secondary gas-liquid film separating system, further separated in dissolving oxygen and carbon dioxide in water coolant;
Step 7, will send into airtight product water tank through the interior water coolant of described secondary gas-liquid film separating system, then by topping-up pump, the interior water coolant in airtight product water tank is delivered to interior cooling water tank.
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Cited By (5)
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| CN104477996A (en) * | 2014-12-17 | 2015-04-01 | 金堆城钼业股份有限公司 | Rapid cooling process for high-solubility molybdenum oxide required in production of ammonium molybdate |
| CN109650580A (en) * | 2017-09-27 | 2019-04-19 | 株式会社雷肯 | Water treatment facilities, water treatment system and cooling system |
| CN111573897A (en) * | 2020-05-27 | 2020-08-25 | 新奥科技发展有限公司 | Water purification method of circulating water system |
| CN112466486A (en) * | 2020-12-03 | 2021-03-09 | 中广核工程有限公司 | Deoxygenation method for connecting waste heat discharge system to reactor coolant system |
| CN115124161A (en) * | 2022-05-13 | 2022-09-30 | 华能山东发电有限公司烟台发电厂 | Method for prolonging resin service cycle of generator rotor cooling water treatment device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104477996A (en) * | 2014-12-17 | 2015-04-01 | 金堆城钼业股份有限公司 | Rapid cooling process for high-solubility molybdenum oxide required in production of ammonium molybdate |
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| CN109650580A (en) * | 2017-09-27 | 2019-04-19 | 株式会社雷肯 | Water treatment facilities, water treatment system and cooling system |
| CN111573897A (en) * | 2020-05-27 | 2020-08-25 | 新奥科技发展有限公司 | Water purification method of circulating water system |
| CN112466486A (en) * | 2020-12-03 | 2021-03-09 | 中广核工程有限公司 | Deoxygenation method for connecting waste heat discharge system to reactor coolant system |
| CN112466486B (en) * | 2020-12-03 | 2022-09-06 | 中广核工程有限公司 | Deoxygenation method for connecting waste heat discharge system to reactor coolant system |
| CN115124161A (en) * | 2022-05-13 | 2022-09-30 | 华能山东发电有限公司烟台发电厂 | Method for prolonging resin service cycle of generator rotor cooling water treatment device |
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