CN107527666B - A kind of quantization control method of one loop of nuclear power station purification system boric acid saturation - Google Patents

A kind of quantization control method of one loop of nuclear power station purification system boric acid saturation Download PDF

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CN107527666B
CN107527666B CN201610447695.7A CN201610447695A CN107527666B CN 107527666 B CN107527666 B CN 107527666B CN 201610447695 A CN201610447695 A CN 201610447695A CN 107527666 B CN107527666 B CN 107527666B
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primary ioops
purification system
boric acid
saturation
exchange capacity
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CN107527666A (en
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高昀
胡海
李锋
王旭初
苏凯
王宇宙
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Jiangsu Nuclear Power Corp
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Jiangsu Nuclear Power Corp
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/06—Devices or arrangements for monitoring or testing fuel or fuel elements outside the reactor core, e.g. for burn-up, for contamination
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

The invention belongs to one loop of nuclear power station purification system technique fields, specifically disclose a kind of quantization control method of one loop of nuclear power station purification system boric acid saturation: calculating exchange capacity C of the primary Ioops purification system KBE50AT001 and KBE10AT002 under the conditions of primary Ioops boric acid concentrationExchange capacity；According to exchange capacity C obtained aboveExchange capacity, calculate primary Ioops boric acid volume V required for KBE50AT001 and KBE10AT002 boric acid is saturated；Using the volume V of above-mentioned determination, open type quantization saturation is carried out to the negative resin in KBE50AT001；Using the volume V of above-mentioned determination, open type quantization saturation is carried out to the negative resin in primary Ioops purification system anion bed KBE10AT002.This method realizes the quantization boric acid saturation process of primary Ioops purification system, reduces the overhaul duration and enters the impurity level of primary Ioops, optimizes primary Ioops Water-quality control.

Description

A kind of quantization control method of one loop of nuclear power station purification system boric acid saturation
Technical field
The invention belongs to one loop of nuclear power station purification system technique fields, and in particular to a kind of one loop of nuclear power station purification system The quantization control method for boric acid saturation of uniting.
Background technique
The primary Ioops purification system KBE of pressurized-water reactor nuclear power plant unit is by three clean unit cation bed KBE10AT001, anion beds KBE10AT002, mixed bed KBE50AT001 composition, each clean unit load 1.3m3Nuclear grade resin, wherein clean unit KBE10AT001 filling is nuclear leve positive resin (Bayer s200KR), and clean unit KBE10AT002 filling is nuclear leve yin tree Rouge (Bayer M800KR), clean unit KBE50AT001 filling is yin-yang hybrid resin.Connection type is clean unit KBE10AT001, KBE10AT002 are series system, then clean unit KBE50AT001 in parallel.Two column clean-up beds be both needed into Row boric acid saturation.Original design primary Ioops purification system boric acid saturation is enclosed boric acid saturation process, i.e. unit is steady in the hot stage After fixed, reactor enter before minimum can monitor power, anion bed KBE10AT002 and mixed bed KBE50AT001 access primary Ioops system Boric acid in absorption coolant makes negative resin reach boric acid saturation.Discovery enclosed boric acid saturation process exists such as in actual operation Lower problem:
1, it needs individually to open up boric acid saturation time, occupies the overhaul duration；
2, original impurity can enter in primary Ioops coolant in primary Ioops purification system resin, be unfavorable for primary Ioops water Matter safety.
The mode for being all made of hot period enclosed saturation in the prior art carries out the boric acid saturation of primary Ioops purification system, and Referential experience is had no for the quantitative relationship of negative resin exchange capacity and boric acid concentration.
Summary of the invention
It is an object of the invention to a kind of quantization control method of one loop of nuclear power station purification system boric acid saturation, this method It realizes the quantization boric acid saturation process of primary Ioops purification system, reduce the overhaul duration and enters the impurity level of primary Ioops, optimization one Loop water quality control.
Realize the technical solution of the object of the invention: a kind of quantified controlling side of one loop of nuclear power station purification system boric acid saturation Method, method includes the following steps:
Step (1) calculates primary Ioops purification system mixed bed KBE50AT001 and primary Ioops purification system anion bed Exchange capacity C of KBE10AT002 under the conditions of primary Ioops boric acid concentrationExchange capacity, as shown in following formula (1):
CExchange capacity=1.306ln (CBoric acid concentration)+0.22 formula (1)；
Step (2) exchange capacity C according to obtained in above-mentioned steps (1)Exchange capacity, calculate primary Ioops purification system mixed bed Primary Ioops boric acid volume V such as following formula required for KBE50AT001 and primary Ioops purification system anion bed KBE10AT002 boric acid are saturated (2) shown in:
The primary Ioops boric acid volume V that step (3) uses above-mentioned steps (2) to determine, to primary Ioops purification system mixed bed Negative resin in KBE50AT001 carries out open type quantization saturation；
The primary Ioops boric acid volume V that step (4) uses above-mentioned steps (2) to determine, to primary Ioops purification system anion bed Negative resin in KBE10AT002 carries out open type quantization saturation, full so as to complete a kind of one loop of nuclear power station purification system boric acid The quantified controlling process of sum.
Specific step is as follows for the step (3): after the completion of primary Ioops pressure testing in pressure reduction, utilizing primary Ioops The boric acid of discharge, according to primary Ioops coolant system JAA → primary Ioops purification system mixed bed KBE50AT001 → reactor building Equipment drainage system KTA10BB001 → boron water storage system KBB11 (12) BB001 sequence is mixed to primary Ioops purification system Negative resin in bed KBE50AT001 carries out open type quantization saturation.
Specific step is as follows for the step (4): during primary Ioops increasing temperature and pressure, utilizing the boron of primary Ioops discharge Acid, according to primary Ioops coolant system JAA → primary Ioops purification system series cation bed KBE10AT001 → primary Ioops purification system Anion bed KBE10AT002 → reactor building equipment drainage system KTA10BB001 → boron water storage system KBB11 (12) The sequence of BB001 carries out open type quantization saturation to the negative resin in primary Ioops purification system anion bed KBE10AT002, to complete A kind of quantified controlling process of one loop of nuclear power station purification system boric acid saturation.
Advantageous effects of the invention: the present invention passes through quantifying between clear negative resin exchange capacity and boric acid concentration Relationship, the process of optimization primary Ioops purification system boric acid saturation.Each nuclear power station overhaul can save the overhaul duration 2 hours, And objectionable impurities amount into primary Ioops can be reduced.It does not need to increase additional system facility using method of the invention, no It needs to add additional chemical reagent and changes water quality, by adjusting the method for operation of purification system.In addition, the present invention is clear Resin exchange capacity and boric acid concentration quantitative relationship, may extend in the control of presurized water reactor primary Ioops water chemistry, while being also The nuclear power unit of other heap-type further increases water chemistry controlled level and provides good reference.
Detailed description of the invention
A kind of process of the quantization control method for one loop of nuclear power station purification system boric acid saturation that Fig. 1 is mentioned for the present invention Figure；
Fig. 2 is the quantitative relationship figure of negative resin exchange capacity provided by the present invention and boric acid concentration.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, 2, a kind of quantified controlling side for one loop of nuclear power station purification system boric acid saturation that the present invention is mentioned Method, method includes the following steps:
Step (1) calculates primary Ioops purification system mixed bed KBE50AT001 and primary Ioops purification system anion bed Exchange capacity C of KBE10AT002 under the conditions of primary Ioops boric acid concentrationExchange capacity, as shown in following formula (1):
CExchange capacity=1.306ln (CBoric acid concentration)+0.22 formula (1)
In formula:
CExchange capacity: exchange capacity of the negative resin to boric acid, mol/L；
CBoric acid concentration: primary Ioops boric acid concentration, g/L；
Step (2) exchange capacity C according to obtained in above-mentioned steps (1)Exchange capacity, calculate primary Ioops purification system mixed bed Primary Ioops boric acid volume V such as following formula required for KBE50AT001 and primary Ioops purification system anion bed KBE10AT002 boric acid are saturated (2) shown in:
In formula:
V: the volume of primary Ioops boric acid solution, L needed for resin boron is saturated；
VResin volume: the volume of negative resin, L；
CExchange capacity: exchange capacity of the negative resin to boric acid, mol/L；
CBoric acid concentration: primary Ioops boric acid concentration, g/L；
61.83: the molal weight of boric acid, g/mol.
The primary Ioops boric acid volume V that step (3) uses above-mentioned steps (2) to determine, to primary Ioops purification system mixed bed Negative resin in KBE50AT001 carries out open type quantization saturation, the specific steps are as follows:
After the completion of primary Ioops pressure testing in pressure reduction, the boric acid being discharged using primary Ioops is cooling according to primary Ioops Agent system JAA → primary Ioops purification system mixed bed KBE50AT001 → reactor building equipment drainage system KTA10BB001 → contains The sequence of boron water storage system KBB11 (12) BB001 carries out the negative resin in primary Ioops purification system mixed bed KBE50AT001 Open type quantization saturation.The primary Ioops boric acid volume V that step (4) uses above-mentioned steps (2) to determine, to primary Ioops purification system yin Negative resin in bed KBE10AT002 carries out open type quantization saturation, the specific steps are as follows:
During primary Ioops increasing temperature and pressure, the boric acid being discharged using primary Ioops, according to primary Ioops coolant system JAA → primary Ioops purification system series cation bed KBE10AT001 → primary Ioops purification system anion bed KBE10AT002 → reactor building Equipment drainage system KTA10BB001 → boron water storage system KBB11 (12) BB001 sequence is to primary Ioops purification system yin Negative resin in bed KBE10AT002 carries out open type quantization saturation.
So as to complete a kind of quantified controlling process of one loop of nuclear power station purification system boric acid saturation.
As shown in table 1 below, it when comparison unit is hot the case where the time consumed by enclosed saturation KBE10 and KBE50, uses After quantization saturation process of the invention, this part-time can be saved from the overhaul duration to be come, and each overhaul of every unit can Save the overhaul duration 2 hours.
The hot period enclosed of table 1 is saturated time statistical form consumed by KBE10 and KBE50
System Enclosed saturation volume (kg/s) Enclosed saturation time (hour) It saves overhaul time (hour)
KBE50 8 0.5 0.5
KBE10 8 1.5 1.5
Since one loop of nuclear power station purification system does not regenerate, new resin is needed to change after each overhaul, resin is in producer A certain amount of impurity can be remained in manufacturing process, these impurity are in boron saturation process, due to the boric acid generated after boric acid electrolysis Competition row's band effect of root, more boric acid, can be released.When hot period enclosed is saturated, these impurity all will go into one In circuit, it is unfavorable for the safety of equipment.As shown in table 2, after using quantization saturation process of the invention, these impurity are not returned again to Into primary Ioops, to reduce the impurity content of primary Ioops.
2 open type of table quantify saturation process reduction into the impurity level statistical form in primary Ioops
The present invention is explained in detail above in conjunction with drawings and examples, but the present invention is not limited to above-mentioned implementations Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention Various change out.The content being not described in detail in the present invention can use the prior art.

Claims (3)

1. a kind of quantization control method of one loop of nuclear power station purification system boric acid saturation, which is characterized in that this method include with Lower step:
Step (1) calculates primary Ioops purification system mixed bed KBE50AT001 and primary Ioops purification system anion bed KBE10AT002 exists Exchange capacity C under the conditions of primary Ioops boric acid concentrationExchange capacity, as shown in following formula (1):
CExchange capacity=1.306ln (CBoric acid concentration)+0.22 formula (1)；
Step (2) exchange capacity C according to obtained in above-mentioned steps (1)Exchange capacity, calculate primary Ioops purification system mixed bed Primary Ioops boric acid volume V such as following formula required for KBE50AT001 and primary Ioops purification system anion bed KBE10AT002 boric acid are saturated (2) shown in:
The primary Ioops boric acid volume V that step (3) uses above-mentioned steps (2) to determine, to primary Ioops purification system mixed bed Negative resin in KBE50AT001 carries out open type quantization saturation；
The primary Ioops boric acid volume V that step (4) uses above-mentioned steps (2) to determine, to primary Ioops purification system anion bed Negative resin in KBE10AT002 carries out open type quantization saturation, full so as to complete a kind of one loop of nuclear power station purification system boric acid The quantified controlling process of sum.
2. a kind of quantization control method of one loop of nuclear power station purification system boric acid saturation according to claim 1, special Sign is that specific step is as follows for the step (3): after the completion of primary Ioops pressure testing in pressure reduction, utilizing primary Ioops The boric acid of discharge, according to primary Ioops coolant system JAA → primary Ioops purification system mixed bed KBE50AT001 → reactor building Equipment drainage system KTA10BB001 → boron water storage system KBB11 (12) BB001 sequence is mixed to primary Ioops purification system Negative resin in bed KBE50AT001 carries out open type quantization saturation.
3. a kind of quantization control method of one loop of nuclear power station purification system boric acid saturation according to claim 2, special Sign is that specific step is as follows for the step (4): during primary Ioops increasing temperature and pressure, utilizing the boron of primary Ioops discharge Acid, according to primary Ioops coolant system JAA → primary Ioops purification system series cation bed KBE10AT001 → primary Ioops purification system Anion bed KBE10AT002 → reactor building equipment drainage system KTA10BB001 → boron water storage system KBB11 (12) The sequence of BB001 carries out open type quantization saturation to the negative resin in primary Ioops purification system anion bed KBE10AT002, to complete A kind of quantified controlling process of one loop of nuclear power station purification system boric acid saturation.
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CN109166636B (en) * 2018-08-06 2023-08-25 广东核电合营有限公司 System and method for uninterrupted purification of primary circuit of pressurized water reactor nuclear motor unit
CN109876871B (en) * 2019-03-28 2021-12-17 江苏核电有限公司 Efficient resin unloading method for high-pressure ion exchange purification system

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KR20090022449A (en) * 2007-08-30 2009-03-04 한국수력원자력 주식회사 Reduction method of spent resin generated from steam generator blowdown demineralizers of pwr nuclear power plants
CN101502738A (en) * 2009-02-06 2009-08-12 南京大学 Method and device for purifying light-concentration siloxane gas
CN103177781A (en) * 2011-12-23 2013-06-26 江苏核电有限公司 Method for controlling concentration of sulfate radical of pressurized water reactor nuclear power plant unit-loop
CN104916340A (en) * 2014-03-12 2015-09-16 江苏核电有限公司 Nuclear power plant end-of-life reactivity control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090022449A (en) * 2007-08-30 2009-03-04 한국수력원자력 주식회사 Reduction method of spent resin generated from steam generator blowdown demineralizers of pwr nuclear power plants
CN101502738A (en) * 2009-02-06 2009-08-12 南京大学 Method and device for purifying light-concentration siloxane gas
CN103177781A (en) * 2011-12-23 2013-06-26 江苏核电有限公司 Method for controlling concentration of sulfate radical of pressurized water reactor nuclear power plant unit-loop
CN104916340A (en) * 2014-03-12 2015-09-16 江苏核电有限公司 Nuclear power plant end-of-life reactivity control method

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