CN106745406B - Device and method for optimizing operation control of fine treatment of condensate water of power plant - Google Patents
Device and method for optimizing operation control of fine treatment of condensate water of power plant Download PDFInfo
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- CN106745406B CN106745406B CN201710020873.2A CN201710020873A CN106745406B CN 106745406 B CN106745406 B CN 106745406B CN 201710020873 A CN201710020873 A CN 201710020873A CN 106745406 B CN106745406 B CN 106745406B
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- meters
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- water quality
- fine treatment
- monitoring instrument
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000005498 polishing Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 7
- 238000003908 quality control method Methods 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 238000012544 monitoring process Methods 0.000 claims description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 238000005457 optimization Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 239000011734 sodium Substances 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/001—Upstream control, i.e. monitoring for predictive control
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/29—Chlorine compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Physical Water Treatments (AREA)
Abstract
A bypass regulating automatic control system is additionally arranged on a bypass of condensate polishing equipment, and according to condensate, polished effluent quality measurement results and set polished effluent quality control standards, the opening of a control valve is automatically regulated, so that a certain proportion of full-flow polished condensate flows through the bypass system, and the running burden of the condensate polishing equipment is reduced. Compared with the existing full-flow fine treatment operation control mode, the method and the device can greatly lighten the operation burden of condensate fine treatment equipment, prolong the fine treatment operation period, reduce the acid-base consumption, the desalted water consumption and the wastewater discharge amount when the fine treatment system is frequently regenerated, reduce the working intensity of operators, improve the water quality of a power plant and have remarkable energy-saving and consumption-reducing effects.
Description
Technical Field
The invention relates to a condensate polishing operation control optimization method and device, in particular to a condensate polishing operation control optimization device and method for a power plant.
Background
For a generator set provided with a condensate polishing device, in order to ensure that the water quality of condensate polishing effluent can reach the GB12145-2008 standard of thermal generator set and steam quality of steam power equipment, 100% full flow treatment of condensate is generally required. The processing mode has a series of problems: when the condensed water fine treatment mixed bed adopts a hydrogen type operation mode, ammonia added by the water vapor system needs to be completely consumed by the fine treatment mixed bed, so that the fine treatment system has heavy operation load and short operation period, acid and alkali consumption is increased due to frequent regeneration of mixed bed resin, the waste water yield is increased, the resin performance degradation is accelerated, the water quality of mixed bed effluent is influenced, and meanwhile, the working intensity of operators is increased.
In practice, when the unit is operating normally and stably, the system is free from invasion of foreign substances, the condensate polishing system removes ammonia which is beneficial to the corrosion protection of the water vapor system, and brings about a series of negative effects. At present, a power plant does not have a method and a device for optimizing condensate polishing operation control, so if an optimal condensate polishing mode and a treatment flow rate can be selected according to the water quality monitoring result of each monitoring water sample of a water vapor system of the power plant, the whole process is intelligentized, and the condensate polishing operation control method and the device are researched, so that the operation burden of a power plant polishing system is greatly reduced, and considerable energy saving and consumption reduction benefits are obtained.
Disclosure of Invention
In order to solve the problems in the condensate polishing operation process and prolong the operation period of condensate polishing equipment to the maximum extent, the invention aims to provide the condensate polishing operation control optimizing device and method for the power plant, and the operation economy of the condensate polishing equipment is greatly improved.
In order to achieve the purpose, the device for controlling and optimizing the condensate fine treatment operation of the power plant comprises a condensate water quality monitoring instrument and condensate fine treatment equipment which are connected with a main pipe of an outlet of a condensate pump of the power plant, wherein a bypass pipeline with a control valve is connected in parallel to the condensate fine treatment equipment, a main pipe of the condensate fine treatment equipment is provided with a water quality monitoring instrument of effluent of the fine treatment equipment, feedback signals of the condensate water quality monitoring instrument and the water quality monitoring instrument of effluent of the fine treatment equipment are sent to a bypass regulation automatic control system, and control output of the bypass regulation automatic control system is connected with the control valve.
The condensed water quality monitoring instrument is one or the combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatographs and atomic absorption meters.
The effluent quality monitoring instrument of the fine treatment equipment is one or a combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatographs and atomic absorption meters.
The control optimization method of the invention comprises the following steps:
firstly, respectively monitoring the water quality result after the condensate pump outlet main pipe of the power plant and the condensate fine treatment equipment by a condensate water quality monitoring instrument and a fine treatment equipment outlet water quality monitoring instrument;
then, feeding back the monitoring result of the condensed water quality monitoring instrument and the effluent quality monitoring instrument of the fine treatment equipment to the bypass regulation automatic control system;
finally, according to the water quality measurement result and the set water quality control standard of the refined treated water, the bypass regulating automatic control system regulates the opening of the control valve, and under the condition that the water quality of the refined treated water meets the set standard requirement, part of full-flow refined treated condensed water flows through the bypass system.
Compared with the prior art, the invention has the following advantages:
(1) Under the condition of ensuring that the water quality of the monitored water sample meets the standard requirement, the running period of the condensate polishing equipment is prolonged by several times or even tens times.
(2) The mixed bed resin of the fine treatment equipment is prevented from being frequently regenerated, the consumption of acid, alkali, desalted water and the like is greatly reduced, the wastewater discharge is greatly reduced, the working intensity of operators is greatly reduced, the degradation of the resin performance is favorably delayed, and the method has remarkable effects on energy conservation and consumption reduction of power plants.
(3) The impurities such as sodium ions and chloride ions are released in the process of using the condensate polishing equipment, the water quality is improved, and the occurrence of corrosion and salt accumulation of a water vapor system is prevented.
(4) The ammonia adding amount in the operation process of the water vapor system can be greatly reduced, and the operation cost is saved; meanwhile, impurities introduced into a water vapor system in the ammonia adding process are avoided, and the water quality of the power plant is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
The device comprises a condensate water quality monitoring instrument 1 and condensate water fine treatment equipment 6 which are connected with a main pipe of a condensate pump outlet of a power plant, wherein a bypass pipeline 2 with a control valve 3 is connected in parallel with the condensate water fine treatment equipment 6, a fine treatment equipment effluent water quality monitoring instrument 4 is arranged on a main pipe of the condensate water fine treatment equipment 6, feedback signals of the condensate water quality monitoring instrument 1 and the fine treatment equipment effluent water quality monitoring instrument 4 are sent to a bypass regulation automatic control system 5, and the control output of the bypass regulation automatic control system 5 is connected with the control valve 3.
The condensed water quality monitoring instrument 1 is one or a combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatographs and atomic absorption meters.
The effluent quality monitoring instrument 4 of the fine treatment equipment is one or a combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatographs and atomic absorption meters.
The working principle of the invention is as follows:
the condensate polishing equipment 6 is additionally provided with a bypass pipeline 2 in parallel, and the bypass pipeline 2 is additionally provided with a control valve 3 and a bypass adjusting automatic control system 5. The control system automatically collects measurement result signals of the condensate water quality monitoring instrument 1 and the effluent water quality monitoring instrument 4 of the fine treatment equipment, automatically adjusts the opening of the control valve 3 according to the water quality measurement result and a set fine treatment effluent water quality control standard, and enables a certain proportion of full-flow fine treatment condensate water to flow through the bypass system under the condition that the fine treatment effluent water quality meets the set standard requirement, thereby reducing the running burden of the condensate water fine treatment equipment and prolonging the optimization purpose of the fine treatment running period.
The specific implementation process of the invention is described as follows:
the condensate water enters the condensate water fine treatment device 6 and the bypass pipeline 2 from the outlet main pipe of the condensate water pump respectively. The condensation water quality monitoring instrument 1 and the fine treatment equipment outlet water quality monitoring instrument 4 respectively monitor the condensation water quality and the fine treatment equipment outlet water quality. The condensate water quality monitoring instrument 1 and the fine treatment equipment effluent water quality monitoring instrument 4 feed back the water quality measurement result to the bypass regulation automatic control system 5, and the bypass regulation automatic control system 5 sends a control signal to the control valve 3 according to the water quality measurement result and the fine treatment equipment effluent water quality control standard, and automatically adjusts the opening of the control valve 3 to enable a part of condensate water to bypass, so that the fine treatment effluent water quality is controlled in a qualified range. The invention finally aims to bypass a part of condensed water on the premise that the quality of the refined treated effluent is qualified, so as to achieve the optimization purposes of reducing the operation load of the refined treatment equipment and prolonging the operation period of the refined treatment.
Claims (2)
1. A control optimization method of a control optimization device for the fine treatment operation of the condensate water of a power plant is characterized by comprising the following steps:
firstly, a condensate water quality monitoring instrument (1) and a fine treatment equipment effluent water quality monitoring instrument (4) are used for respectively monitoring the water quality results after the condensate water outlet main pipe of a power plant condensate pump and the condensate water fine treatment equipment are used for treating;
then, monitoring results of the condensed water quality monitoring instrument (1) and the effluent quality monitoring instrument (4) of the fine treatment equipment are fed back to the bypass regulation automatic control system (5);
finally, according to the water quality measurement result and the set water quality control standard of the refined treated water, the bypass regulating automatic control system (5) regulates the opening of the control valve (3), and under the condition that the water quality of the refined treated water meets the set standard requirement, part of full-flow refined treated condensed water flows through the bypass system;
the method is realized by the following devices;
the utility model provides a power plant condensate polishing operation control optimizing apparatus, including condensate water quality monitoring instrument (1) and condensate polishing equipment (6) that link to each other with power plant condensate pump export mother pipe, connect in parallel on condensate polishing equipment (6) have control valve (3) bypass pipeline (2), install on condensate polishing equipment's the play mother pipe of equipment (6) fine treatment equipment play water quality monitoring instrument (4), condensate water quality monitoring instrument (1), fine treatment equipment play water quality monitoring instrument (4) feedback signal send into bypass regulation automatic control system (5), bypass regulation automatic control system (5) control output links to each other with control valve (3);
the condensed water quality monitoring instrument (1) is one or a combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatographs and atomic absorption meters.
2. The control optimization method of the power plant condensate polishing operation control optimization device according to claim 1, wherein the effluent quality monitoring instrument (4) of the polishing equipment is one or a combination of a plurality of conductivity meters, hydrogen conductivity meters, degassing hydrogen conductivity meters, pH meters, sodium meters, dissolved oxygen meters, silicon meters, chloride ion analysis meters, sulfate ion analysis meters, TOC analysis meters, ion chromatograph and atomic absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020873.2A CN106745406B (en) | 2017-01-11 | 2017-01-11 | Device and method for optimizing operation control of fine treatment of condensate water of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710020873.2A CN106745406B (en) | 2017-01-11 | 2017-01-11 | Device and method for optimizing operation control of fine treatment of condensate water of power plant |
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| Publication Number | Publication Date |
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| CN106745406A CN106745406A (en) | 2017-05-31 |
| CN106745406B true CN106745406B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710020873.2A Active CN106745406B (en) | 2017-01-11 | 2017-01-11 | Device and method for optimizing operation control of fine treatment of condensate water of power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN106745406B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045596A (en) * | 2019-05-13 | 2019-07-23 | 中冶南方都市环保工程技术股份有限公司 | Condensate polishing control system and method |
| CN110294548A (en) * | 2019-07-25 | 2019-10-01 | 西安热工研究院有限公司 | A kind of condensate polishing treatment desalting system running simulation device and method |
| CN112462700B (en) * | 2020-11-09 | 2021-09-14 | 西安热工研究院有限公司 | Intelligent chemical water working condition control system and method for power plant |
| CN115028283A (en) * | 2022-05-30 | 2022-09-09 | 西安热工研究院有限公司 | Nuclear power station condensate fine treatment system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002296389A (en) * | 2001-03-30 | 2002-10-09 | Japan Organo Co Ltd | Condensation processing system and its operation method |
| CN201648062U (en) * | 2010-02-05 | 2010-11-24 | 河南省日立信股份有限公司 | Generator inner cooling water optimizing adjusting system |
| CN102591374A (en) * | 2012-02-15 | 2012-07-18 | 中国石油天然气股份有限公司 | Automatic control device for pH value of distillation tower top condensate |
| CN103373745A (en) * | 2012-04-17 | 2013-10-30 | 南京中电环保股份有限公司 | Valve-free bypass method and device for nuclear power condensed water fine treatment system |
| CN203443954U (en) * | 2013-08-26 | 2014-02-19 | 重庆海润节能研究院 | Water quality safety monitoring system of tap water source heat pump |
| CN206447585U (en) * | 2017-01-11 | 2017-08-29 | 西安热工研究院有限公司 | A kind of power plant condensate polishing treatment operation control optimization device |
-
2017
- 2017-01-11 CN CN201710020873.2A patent/CN106745406B/en active Active
Patent Citations (6)
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| JP2002296389A (en) * | 2001-03-30 | 2002-10-09 | Japan Organo Co Ltd | Condensation processing system and its operation method |
| CN201648062U (en) * | 2010-02-05 | 2010-11-24 | 河南省日立信股份有限公司 | Generator inner cooling water optimizing adjusting system |
| CN102591374A (en) * | 2012-02-15 | 2012-07-18 | 中国石油天然气股份有限公司 | Automatic control device for pH value of distillation tower top condensate |
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