CN106391147A - Resin regeneration and post-flushing method of steam generator drainage sewage purification system in nuclear power station - Google Patents
Resin regeneration and post-flushing method of steam generator drainage sewage purification system in nuclear power station Download PDFInfo
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- CN106391147A CN106391147A CN201610170064.5A CN201610170064A CN106391147A CN 106391147 A CN106391147 A CN 106391147A CN 201610170064 A CN201610170064 A CN 201610170064A CN 106391147 A CN106391147 A CN 106391147A
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Abstract
The invention belongs to the technical field of nuclear power station sewage purification, in particular relates to a resin regeneration and post-flushing method of a steam generator drainage sewage purification system in a nuclear power station. The defects in the prior art are overcome, the regeneration and post-flushing time of resin in the steam generator drainage sewage purification system is shortened, and the residual amount of regeneration liquid after a resin bed is flushed is reduced, and it is ensured that the residual regeneration liquid is not introduced into system after the resin regeneration process. The method comprises the following steps: step 1, regenerating cation resin; step 2, performing flushing after the cation resin is regenerated; step 3, regenerating anion resin; step 4, performing combined flushing.
Description
Technical field
The invention belongs to nuclear power station technical field of sewage purification is and in particular to purging method after a kind of nuclear power station steam generator blowdown water purification circuit resin regeneration.
Background technology
Every unit of nuclear power station is provided with a set of steam generator cleaning system, this system is used for mechanical admixture and the soluble-salt penetrating due to condenser poor sealing in purifying steam generator sewer, keeps nuclear power station secondary loop water-chemical regime by the purification of the system.
Steam generator blowdown water purification system is provided with two series plastics beds (being both provided with mechanical bed, cation bed and anion bed in each series), unit during normal operation, and a series is run, and a series is standby.
This system, when resin bed outlet operational factor exceedes definite value, will move out operation and regenerated.Resin, after the operation of desalination after a while, loses the ability of exchange ion, and at this moment usable acid, alkali make it recover exchange capacity as regenerated liquid, and this process making resin recover exchange capacity claims the regeneration of resin.Resin needs to be rinsed after regeneration, to guarantee that regenerated liquid rinses well, does not remain.
Purging method after the original design regeneration of said system suffers from the drawback that：
(1) after regenerating, washing time is long, and water consumption is big, leads to system reserve series unavailable during regeneration.
(2) rinse after regenerating after reaching setting definite value, still be able to monitor that regenerated liquid remains in resin bed outlet, there is regenerated liquid and enter the risk that secondary circuit leads to power station steam generator blowdown water water quality to deviate.
Content of the invention
The purpose of the present invention, the technical problem to be solved in the present invention is, not enough for prior art, washing time after a kind of shortening steam generator blowdown water purification system resin regeneration is provided, reduce regenerated liquid residual volume after resin bed rinses it is ensured that residual regeneration liquid will not be introduced the purging method of system after resin regeneration.
The technical scheme is that：
Purging method after a kind of nuclear power station steam generator blowdown water purification circuit resin regeneration, comprises the following steps：
Step one, positive resin regenerates；
Demineralized water and salpeter solution diluent are injected positive resin bed in the lump, salpeter solution injection 0.7m after dilution3After terminate reproduction operation, stop the salpeter solution after injection dilution；
Step 2, rinses after positive resin regeneration；
After stopping the salpeter solution after injection dilution, continue the desalination aqueous solution of resin bed injection on the sunny side and rinse, be flushed to positive resin bed outlet solution pH and be more than 6, rinse after positive resin regeneration and terminate；
Step 3, negative resin regenerates；
Demineralized water and dilute NaOH solution are injected negative resin bed in the lump, sodium hydroxide solution injection 0.7m after dilution3After terminate reproduction operation, stop the sodium hydroxide solution after injection dilution；
Step 4, combines flushing；
Using demineralized water, positive resin bed and negative resin bed are carried out with series connection to rinse, rinse and be less than 0.5us/cm to outlet electrical conductivity, terminate joint flushing.
In described step one, nitric acid dilute solution is that the salpeter solution of 60% concentration is diluted to 50～55g/L；In described step one, desalination discharge is 1.8～2.0kg/s.
In described step 2, desalination discharge is 1.8～2.0kg/s.
In described step 3, desalination discharge is 1.7～2.5kg/s, and described sodium hydroxide dilute solution is that the sodium hydroxide solution of 30% concentration is diluted to 50～55g/L.
In described step 4, desalination discharge is 4.5～6.0kg/s.
The invention has the beneficial effects as follows：
(1) substantially shorten regeneration washing time after step 4 optimization, regeneration water consumption is greatly reduced.After implementing steam generator blowdown water purification system resin bed regeneration operation optimization, regeneration every time is saved 1036.8 cubic metres of demineralized water, is saved 48 hours recovery times.Carry out four LCQ resin bed regeneration every year according to two units it is contemplated that about 4147.2 cubic metres of desalination water consumption will be saved, save about 192 hours recovery times.
(2) reduce regenerated liquid residual effect after step 2 optimization notable.Before operation optimization, resin bed outlet regenerated liquid nitrate ion concentration is 809ug/L, and after optimization, resin bed outlet regenerated liquid nitrate ion concentration is less than 10ug/L.
Specific embodiment
With reference to embodiment, purging method after a kind of nuclear power station steam generator blowdown water purification circuit resin regeneration proposed by the present invention is further introduced：
Purging method after a kind of nuclear power station steam generator blowdown water purification circuit resin regeneration, comprises the following steps：
Step one, positive resin regenerates；
Demineralized water and salpeter solution diluent are injected positive resin bed in the lump, salpeter solution injection 0.7m after dilution3After terminate reproduction operation, stop the salpeter solution after injection dilution；
Step 2, rinses after positive resin regeneration；
After stopping the salpeter solution after injection dilution, continue the desalination aqueous solution of resin bed injection on the sunny side and rinse, be flushed to positive resin bed outlet solution pH and be more than 6, rinse after positive resin regeneration and terminate；
Step 3, negative resin regenerates；
Demineralized water and dilute NaOH solution are injected negative resin bed in the lump, sodium hydroxide solution injection 0.7m after dilution3After terminate reproduction operation, stop the sodium hydroxide solution after injection dilution；
Step 4, combines flushing；
Using demineralized water, positive resin bed and negative resin bed are carried out with series connection to rinse, rinse and be less than 0.5us/cm to outlet electrical conductivity, terminate joint flushing.
In described step one, nitric acid dilute solution is that the salpeter solution of 60% concentration is diluted to 50～55g/L；In described step one, desalination discharge is 1.8～2.0kg/s.
In described step 2, desalination discharge is 1.8～2.0kg/s.
In described step 3, desalination discharge is 1.7～2.5kg/s, and described sodium hydroxide dilute solution is that the sodium hydroxide solution of 30% concentration is diluted to 50～55g/L.
In described step 4, desalination discharge is 4.5～6.0kg/s.
Original design carry out positive resin regeneration first, after regeneration ending, positive resin is rinsed, rinse Zhiyang resin bed exit pH qualified more than 4, then negative resin is rinsed, it is flushed to negative resin bed exit pH qualified less than 10, finally joint flushing is carried out to positive resin and negative resin series connection, be flushed to outlet electrical conductivity and be less than 0.5us/cm.But former purging method is to there is washing time long, and rinse qualified after monitor that regenerated liquid residual quantity is higher in resin bed outlet.
In new solution, following optimization is carried out to the purging method after steam generator blowdown water purification system resin regeneration：
(1) cancel the independent flushing after negative resin regeneration in step 4.Directly joint flushing is carried out to positive resin and negative resin series connection after negative resin regeneration.
(2) rinse qualified pH definite value after in step 2 positive resin being regenerated and bring up to 6 by 4.
Embodiment
Step 1, positive resin regeneration：Enter positive resin bed with the demineralized water of 1.8～2.0kg/s flow, the nitric acid of 60% concentration is diluted to 50～55g/L simultaneously and enters positive resin bed in the lump with demineralized water, by the hydrion of positive resin regenerated liquid, the foreign ion that positive resin adsorbs in running is exchanged.Nitric acid about 0.7m in supply 60% concentration3Afterwards, reproduction operation terminates.
Rinse after step 2, positive resin regeneration：The demineralized water entrance positive resin bed stopping continuing the flow with 1.8～2.0kg/s into after regenerated liquid is rinsed to the foreign ion being swapped out, and is flushed to positive resin bed outlet pH and is more than 6, rinses and terminate after positive resin regeneration.
Step 3, negative resin regeneration：Enter negative resin bed with the demineralized water of the flow of 1.7～2.5kg/s, the sodium hydroxide of 30% concentration is diluted to 50～55g/L simultaneously and enters negative resin bed in the lump with demineralized water, by the hydroxide ion of negative resin regenerated liquid, the foreign ion that negative resin adsorbs in running is exchanged.Sodium hydroxide about 0.7m in supply 30% concentration3Afterwards, reproduction operation terminates.
Step 4, combine flushing：With the demineralized water of the flow of 4.5～6.0kg/s, joint flushing is carried out to positive resin bed and the series connection of negative resin bed, be flushed to outlet electrical conductivity and be less than 0.5us/cm, combine flushing and terminate.
Claims (5)
1. flushing side after a kind of nuclear power station steam generator blowdown water purification circuit resin regeneration
Method it is characterised in that：Comprise the following steps：
Step one, positive resin regenerates；
Demineralized water and salpeter solution diluent are injected positive resin bed in the lump, nitric acid after dilution
Solution injects 0.7m3After terminate reproduction operation, stop the salpeter solution after injection dilution；
Step 2, rinses after positive resin regeneration；
After stopping the salpeter solution after injection dilution, continue the resin bed injection desalination aqueous solution that faces south
Rinse, be flushed to positive resin bed outlet solution pH and be more than 6, rinse after positive resin regeneration and terminate；
Step 3, negative resin regenerates；
Demineralized water and dilute NaOH solution are injected negative resin bed in the lump, hydrogen-oxygen after dilution
Change sodium solution injection 0.7m3After terminate reproduction operation, the sodium hydroxide stopping after injection dilution is molten
Liquid；
Step 4, combines flushing；
Using demineralized water, positive resin bed and negative resin bed are carried out with series connection to rinse, rinse to outlet electricity
Conductance is less than 0.5us/cm, terminates joint flushing.
2. a kind of nuclear power station steam generator blowdown water purification circuit tree as claimed in claim 1
Fat regeneration after purging method it is characterised in that：In described step one, nitric acid dilute solution is
The salpeter solution of 60% concentration is diluted to 50～55g/L；In described step one, desalination discharge is
1.8～2.0kg/s.
3. a kind of nuclear power station steam generator blowdown water purification circuit tree as claimed in claim 1
Fat regeneration after purging method it is characterised in that：In described step 2, desalination discharge be 1.8～
2.0kg/s.
4. a kind of nuclear power station steam generator blowdown water purification circuit tree as claimed in claim 1
Fat regeneration after purging method it is characterised in that：In described step 3, desalination discharge be 1.7～
2.5kg/s, described sodium hydroxide dilute solution is that the sodium hydroxide solution of 30% concentration is diluted to
50～55g/L.
5. a kind of nuclear power station steam generator blowdown water purification circuit tree as claimed in claim 1
Fat regeneration after purging method it is characterised in that：In described step 4, desalination discharge be 4.5～
6.0kg/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610170064.5A CN106391147A (en) | 2016-03-23 | 2016-03-23 | Resin regeneration and post-flushing method of steam generator drainage sewage purification system in nuclear power station |
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| CN201610170064.5A CN106391147A (en) | 2016-03-23 | 2016-03-23 | Resin regeneration and post-flushing method of steam generator drainage sewage purification system in nuclear power station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876871A (en) * | 2019-03-28 | 2019-06-14 | 江苏核电有限公司 | A kind of high efficiency resin discharging method for high-pressure ion exchange purification system |
| CN109979635A (en) * | 2017-12-28 | 2019-07-05 | 中核核电运行管理有限公司 | Novel presurized water reactor Steam Generators in NPP blowdown water treatment system |
| CN110957056A (en) * | 2019-11-21 | 2020-04-03 | 阳江核电有限公司 | Treatment method of APG waste resin of nuclear power plant |
| CN111261308A (en) * | 2020-01-20 | 2020-06-09 | 岭东核电有限公司 | Chemical cleaning method for pressurized water reactor nuclear power station radioactive waste liquid treatment system |
| CN114163685A (en) * | 2020-09-10 | 2022-03-11 | 阳江核电有限公司 | Waste resin regeneration treatment method |
| CN114314753A (en) * | 2021-12-27 | 2022-04-12 | 湖南金牛化工有限公司 | Alkali-saving type anion bed regeneration treatment method |
| RU2794726C1 (en) * | 2021-11-04 | 2023-04-24 | Цзянсуская корпорация по ядерной энергетике | Method for regeneration of the resin of the cation exchanger of the system for fine purification of condensate at npp |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159428A (en) * | 1997-02-05 | 1997-09-17 | 张行赫 | Condensate refining treatment ion exchange resin regeneration system and equipment |
| CN2411849Y (en) * | 2000-02-17 | 2000-12-27 | 蒋如丰 | Yin-Yang resin separation regenerating unit for condensate fine desalting |
| CN104355452A (en) * | 2014-11-14 | 2015-02-18 | 天津大学 | Continuous multistage ion-exchange treatment device for recovering heavy metal ions |
-
2016
- 2016-03-23 CN CN201610170064.5A patent/CN106391147A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159428A (en) * | 1997-02-05 | 1997-09-17 | 张行赫 | Condensate refining treatment ion exchange resin regeneration system and equipment |
| CN2411849Y (en) * | 2000-02-17 | 2000-12-27 | 蒋如丰 | Yin-Yang resin separation regenerating unit for condensate fine desalting |
| CN104355452A (en) * | 2014-11-14 | 2015-02-18 | 天津大学 | Continuous multistage ion-exchange treatment device for recovering heavy metal ions |
Non-Patent Citations (1)
| Title |
|---|
| 蒋国元: "《WWER-1000核电站设备与系统》", 31 December 2009, 原子能出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109979635A (en) * | 2017-12-28 | 2019-07-05 | 中核核电运行管理有限公司 | Novel presurized water reactor Steam Generators in NPP blowdown water treatment system |
| CN109979635B (en) * | 2017-12-28 | 2024-03-19 | 中核核电运行管理有限公司 | Pressurized water reactor nuclear power plant steam generator sewage treatment system |
| CN109876871A (en) * | 2019-03-28 | 2019-06-14 | 江苏核电有限公司 | A kind of high efficiency resin discharging method for high-pressure ion exchange purification system |
| CN110957056A (en) * | 2019-11-21 | 2020-04-03 | 阳江核电有限公司 | Treatment method of APG waste resin of nuclear power plant |
| CN111261308A (en) * | 2020-01-20 | 2020-06-09 | 岭东核电有限公司 | Chemical cleaning method for pressurized water reactor nuclear power station radioactive waste liquid treatment system |
| CN111261308B (en) * | 2020-01-20 | 2023-08-25 | 岭东核电有限公司 | Chemical cleaning method for radioactive waste liquid treatment system of pressurized water reactor nuclear power station |
| CN114163685A (en) * | 2020-09-10 | 2022-03-11 | 阳江核电有限公司 | Waste resin regeneration treatment method |
| RU2794726C1 (en) * | 2021-11-04 | 2023-04-24 | Цзянсуская корпорация по ядерной энергетике | Method for regeneration of the resin of the cation exchanger of the system for fine purification of condensate at npp |
| CN114314753A (en) * | 2021-12-27 | 2022-04-12 | 湖南金牛化工有限公司 | Alkali-saving type anion bed regeneration treatment method |
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