CN113354053A - Ammonia-oxygen mixed feeding system and working method thereof - Google Patents
Ammonia-oxygen mixed feeding system and working method thereof Download PDFInfo
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- CN113354053A CN113354053A CN202110759666.5A CN202110759666A CN113354053A CN 113354053 A CN113354053 A CN 113354053A CN 202110759666 A CN202110759666 A CN 202110759666A CN 113354053 A CN113354053 A CN 113354053A
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- ammonia
- oxygen
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- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 212
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 101
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 72
- 239000001301 oxygen Substances 0.000 claims abstract description 72
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 72
- 239000003381 stabilizer Substances 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 239000000243 solution Substances 0.000 description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 description 7
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 238000006213 oxygenation reaction Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Accessories For Mixers (AREA)
Abstract
本发明公开了一种氨氧混加系统及其工作方法，氨源系统的出口经一级减压器、自动调压器及第二压力变送器与氨溶解器的入口相连通，工业纯氧或压缩空气管道及除盐水管道经自动控制系统与富氧水发生器的入口相连通，富氧水发生器的出口经输送泵与氨溶解器的入口相连通，氨溶解器的出口经第一压力变送器及自动稳压器与火电厂炉内给水、凝结水或高加疏水系统的加药点连通；自动控制系统与输送泵、自动调压器、第一压力变送器、第二压力变送器及自动稳压器相连接，该系统及其工作方法能够满足火电机组全工况、全自动运行的要求，且具有成本低、维护便利性强及空间利用率高的特点。
The invention discloses an ammonia-oxygen mixing system and a working method thereof. The outlet of the ammonia source system is communicated with the inlet of the ammonia dissolver through a first-stage pressure reducer, an automatic pressure regulator and a second pressure transmitter. The oxygen or compressed air pipeline and the demineralized water pipeline are connected with the inlet of the oxygen-enriched water generator through the automatic control system. The outlet of the oxygen-enriched water generator is connected with the inlet of the ammonia dissolver through the conveying pump. A pressure transmitter and automatic pressure regulator are connected with the feed water, condensate water or the dosing point of the high-pressure drainage system in the thermal power plant; the automatic control system is connected with the transfer pump, the automatic pressure regulator, the first pressure transmitter, the first pressure The two pressure transmitters are connected with an automatic voltage stabilizer. The system and its working method can meet the requirements of full-automatic operation of thermal power units, and have the characteristics of low cost, high maintenance convenience and high space utilization.
Description
Technical Field
The invention belongs to the technical field of feedwater treatment of a thermal power plant, and relates to an ammonia-oxygen mixed feeding system and a working method thereof.
Background
For large thermal power generating unit, water treatment system in furnace
It is usually designed to: at the initial stage of starting the unit, adding a certain amount of ammonia into a water vapor system by using ammonia adding equipment in a furnace, and adjusting the pH of feed water to 9.2-9.6 to perform in-furnace anti-corrosion treatment (AVT (O)); in the normal operation stage, while a certain amount of ammonia is added into a water vapor system by using ammonia adding equipment in a furnace, trace oxygen is added into the water vapor system by using oxygen adding equipment, the pH value of feed water is adjusted to 8.5-9.3, the oxygen content of the feed water is adjusted to 10-150ug/L, and the feed water are subjected to in-furnace corrosion prevention treatment (OT) together; when the hydrogen conductivity of the feed water exceeds a standard value under an OT operation working condition, stopping oxygenation in time, switching to an AVT (O) working condition for operation, and controlling the pH value of the feed water to be 9.2-9.6 by using an ammonia addition system; and stopping oxygen supply to the water 4 hours before the machine set stops, rapidly increasing the ammonia supply amount, and controlling the pH value of the water supply to be 9.6-10.5.
In order to meet the design requirements, ammonia adding devices and oxygen adding devices need to be arranged respectively, but the ammonia adding devices and the oxygen adding devices which are independently arranged in the actual operation of a plurality of power plants have the following common problems:
1. the existing ammonia and oxygen adding device can not meet the requirements of full-working-condition and full-automatic operation of a thermal power generating unit.
Under the full-working-condition operation condition of the unit, in order to keep the pH value of feed water and dissolved oxygen to meet the corrosion and scale prevention requirements of the unit, the ammonia adding device and the oxygen adding device need to be coordinately controlled, so that the ammonia adding amount and the oxygen adding amount are always kept in the optimal proportion.
However, when the existing ammonia adding device switches between working conditions such as starting, normal Operation (OT), abnormal water quality (avt (o)), shutdown and the like and performs deep peak regulation, the difference of the adding amount of ammonia water is more than 10 times, and the adding amount of ammonia water is far beyond the automatic regulation range of an ammonia adding system (the difference between the maximum value and the minimum value of variable frequency regulation flow is not more than 5 times). Therefore, when the existing ammonia adding system is switched among working conditions such as starting, normal Operation (OT), water quality abnormity (AVT (O)), shutdown and the like and is subjected to deep peak regulation, operating personnel are required to manually adjust operating parameters on site (such as changing the stroke of an ammonia adding metering pump, adjusting the concentration of ammonia water in an ammonia solution tank and the like) so as to meet the control requirement of the pH value of feed water.
Meanwhile, the traditional oxygenation device designed and produced according to DL 5000-.
Therefore, the prior ammonia and oxygen adding device can not realize the automatic control of the water supply pH and dissolved oxygen full working conditions and can not realize the coordination control.
2. The modification cost of the existing ammonia and oxygen adding system coordination control is higher.
The existing ammonia and oxygen adding device for the thermal power generating unit has the problems of simple hardware function, inappropriate type selection of key components such as an ammonia adding metering pump, an oxygen adding regulating valve, an oxygen adding flow meter and the like, low automation degree and the like. The modification of the ammonia adding device is generally performed only around automatic ammonia preparation and automatic ammonia addition, and the automatic ammonia preparation device, the improper ammonia adding metering pump for replacement and selection, the ammonia adding control cabinet, the automatic ammonia adding control program and pictures of an upper computer and the like need to be added, so that the water supply pH adjusting range of the modified ammonia adding device is not substantially improved, and full-working-condition and full-automatic operation cannot be realized. If full-working-condition and full-automatic operation needs to be met, the complexity and cost of transformation are greatly increased. The oxygen adding device is transformed to generally remove the traditional oxygen adding device integrally, and is replaced by a novel automatic oxygen adding device with high control precision, stability and reliability. On the premise of realizing automatic control of the ammonia adding device and the oxygen adding device respectively, corresponding upper computer coordination control software and hardware are required to be added so as to realize the coordination control of the water supply pH and the dissolved oxygen all-condition, and the total modification cost is higher.
3. The ammonia and oxygen adding devices have the advantages of high operation and maintenance cost, poor maintenance convenience, large occupied area and low space utilization rate.
The traditional ammonia adding device prepares ammonia from an ammonia source into ammonia water with a certain concentration, then utilizes a conveying device such as a metering pump and the like to inject a dosing point, wherein the adding medium is liquid ammonia water, and controls the adding amount of the ammonia water by adopting frequency conversion regulation; the traditional oxygenation device generally utilizes gas pressure to directly inject oxygen into an oxygenation point, and adopts a regulating valve to control the addition of the oxygen. The two sets of devices are various in manufacturers, good in equipment quality, different in function setting and complex in part variety, so that the operation and maintenance cost is high, and the maintenance convenience is poor. And the number of the devices and the pipelines is large, the occupied area is large, and the space utilization rate is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an ammonia-oxygen mixed feeding system and a working method thereof, the system and the working method thereof can meet the requirements of full-working-condition and full-automatic operation of a thermal power generating unit, and the system has the characteristics of low cost, strong maintenance convenience and high space utilization rate.
In order to achieve the purpose, the ammonia-oxygen mixed adding system comprises an oxygen-enriched water generator, a delivery pump, an ammonia dissolver, a first pressure transmitter, an automatic voltage stabilizer, a primary pressure reducer, an automatic voltage regulator, a second pressure transmitter and an automatic control system;
the outlet of the ammonia source system is communicated with the inlet of an ammonia dissolver through a first-stage pressure reducer, an automatic pressure regulator and a second pressure transmitter, an industrial pure oxygen or compressed air pipeline and a demineralized water pipeline are communicated with the inlet of an oxygen-enriched water generator through an automatic control system, the outlet of the oxygen-enriched water generator is communicated with the inlet of the ammonia dissolver through a delivery pump, and the outlet of the ammonia dissolver is communicated with the dosing point of a water supply, condensed water or high-pressure-plus-drainage system in a thermal power plant furnace through a first pressure transmitter and an automatic pressure stabilizer;
the automatic control system is connected with the delivery pump, the automatic pressure regulator, the first pressure transmitter, the second pressure transmitter and the automatic voltage stabilizer.
The second pressure transmitter is communicated with the inlet of the ammonia dissolver through a check valve.
The ammonia source system is an ammonia bottle or an ammonia area.
The outlet of the ammonia dissolver is communicated with the dosing point of the water supply, the condensed water or the high-pressure hydrophobic system in the thermal power plant through the first pressure transmitter, the automatic voltage stabilizer and the dosing pipeline.
The automatic control system automatically controls and adjusts the conveying speed of the conveying pump, the output pressure of the automatic pressure regulator and the constant pressure constant value of the automatic pressure stabilizer, so as to realize the pH value and the dissolved oxygen value in the water treatment system in the ammonia-oxygen mixed feeding control furnace.
The working method of the ammonia-oxygen mixed feeding system comprises the following steps:
demineralized water and industrial pure oxygen or compressed air enter an oxygen-enriched water generator, oxygen-enriched water solution with stable oxygen content concentration is generated in the oxygen-enriched water generator, the oxygen-enriched water solution is conveyed to an ammonia dissolver through a conveying pump, outlet backpressure of the ammonia dissolver is set through an automatic voltage stabilizer, the outlet backpressure of the ammonia dissolver is monitored through a first pressure transmitter, ammonia gas output by an ammonia source system is decompressed through a first-stage decompressor and then enters the ammonia dissolver after being adjusted to enter ammonia pressure through an automatic voltage regulator, wherein the ammonia inlet pressure of the ammonia dissolver is monitored through a second pressure transmitter, the ammonia gas is dissolved in the oxygen-enriched water solution in the ammonia dissolver to generate ammonia-oxygen water solution with set concentration, and then the ammonia-oxygen water solution is conveyed to a dosing point of a water supply, condensed water or a high-pressure hydrophobic system.
The automatic control system adjusts the oxygen adding amount of the flow control system of the delivery pump so as to adjust the dissolved oxygen value of the feed water in the furnace; and when the flow of the delivery pump is changed, adjusting the automatic pressure stabilizer in real time to keep the outlet back pressure of the ammonia dissolver constant.
The invention has the following beneficial effects:
the ammonia-oxygen mixed addition system and the working method thereof have the advantages that during specific operation, the ammonia gas is dissolved in the oxygen-enriched water with stable concentration by utilizing the characteristic of easy dissolution of the ammonia gas to form ammonia-oxygen aqueous solution, the ammonia concentration in the ammonia-oxygen aqueous solution is adjusted in real time by controlling different ammonia gas dissolution pressures, and meanwhile, the pH value and the oxygen value of a water vapor system in the furnace are subjected to full-working-condition coordination control by integrally and automatically adjusting the ammonia-oxygen water addition amount and the ammonia dissolution pressure, so that the requirements of full-working-condition and full-automatic operation of a thermal power generating unit are met. In addition, the invention integrates the traditional two sets of equipment for adding ammonia and oxygen into a set of independent and complete ammonia-oxygen mixed addition equipment, thereby not only realizing the accurate control of the pH value and dissolved oxygen in the furnace and the coordination control of the whole working condition, but also effectively simplifying the system, reducing the cost of respectively modifying and upgrading the two sets of independent devices for adding ammonia and oxygen, improving the maintenance convenience, saving the occupied area of field equipment and pipelines and improving the space utilization efficiency of a main factory building.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is the oxygen-enriched water generator, 2 is the delivery pump, 3 is the ammonia dissolver, 4 is first pressure transmitter, 5 is automatic voltage stabilizer, 6 is the first-stage pressure reducer, 7 is automatic voltage regulator, 8 is the second pressure transmitter, 9 is the check valve, 10 is automatic control system.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
There is shown in the drawings a schematic block diagram of a disclosed embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity of presentation. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, according to actual needs.
Referring to fig. 1, the ammonia-oxygen mixed feeding system of the present invention comprises an oxygen-enriched water generator 1, a delivery pump 2, an ammonia dissolver 3, a first pressure transmitter 4, an automatic pressure stabilizer 5, a first-stage pressure reducer 6, an automatic pressure regulator 7, a second pressure transmitter 8, a check valve 9 and an automatic control system 10;
the outlet of the ammonia source system is communicated with the inlet of the ammonia dissolver 3 through a first-stage pressure reducer 6, an automatic pressure regulator 7, a second pressure transmitter 8 and a check valve 9, an industrial pure oxygen or compressed air pipeline and a demineralized water pipeline are communicated with the inlet of the oxygen-enriched water generator 1 through an automatic control system 10, the outlet of the oxygen-enriched water generator 1 is communicated with the inlet of the ammonia dissolver 3 through a delivery pump 2, the outlet of the ammonia dissolver 3 is communicated with the dosing point of a water supply, condensed water or high-pressure hydrophobic system in the thermal power plant furnace through a first pressure transmitter 4 and an automatic voltage stabilizer 5, and the ammonia source system is an ammonia bottle or an ammonia area.
The automatic control system 10 is connected with the delivery pump 2, the automatic pressure regulator 7, the first pressure transmitter 4, the second pressure transmitter 8 and the automatic pressure stabilizer 5, and the automatic control system 10 automatically controls and regulates the delivery rate of the delivery pump 2, the output pressure of the automatic pressure regulator 7 and the pressure stabilization constant value of the automatic pressure stabilizer 5, so that the pH value and the dissolved oxygen value in the ammonia-oxygen mixed addition control furnace internal water treatment system are realized, and the coordinated control of the pH value and the dissolved oxygen value of the feed water in the thermal power plant is realized.
The working method of the ammonia-oxygen mixed addition system comprises the following steps:
demineralized water and industrial pure oxygen or compressed air enter an oxygen-enriched water generator 1, an oxygen-enriched water solution with stable oxygen content concentration is generated in the oxygen-enriched water generator 1, the oxygen-enriched water solution is conveyed to an ammonia dissolver 3 through a conveying pump 2, the outlet backpressure of the ammonia dissolver 3 is set through adjusting an automatic voltage stabilizer 5, the outlet backpressure of the ammonia dissolver 3 is monitored through a first pressure transmitter 4, ammonia gas output by an ammonia source system is decompressed through a first-stage decompressor 6 and then enters the ammonia dissolver 3 after being adjusted by an automatic voltage regulator 7, wherein the ammonia inlet pressure of the ammonia dissolver 3 is monitored through a second pressure transmitter 8, the ammonia gas is dissolved in the oxygen-enriched water solution in the ammonia dissolver 3 to generate an ammonia-oxygen water solution with set concentration, and then the ammonia-oxygen water solution is conveyed to a dosing point of a water supply, condensed water or a high-pressure drainage system through a dosing pipeline.
In the conveying process, the automatic control system 10 controls the oxygen adding amount of the system by adjusting the flow rate of the conveying pump 2, and then adjusts the water supply dissolved oxygen value in the furnace; when the flow of the delivery pump 2 changes, the automatic pressure stabilizer 5 is adjusted in real time to keep the outlet back pressure of the ammonia dissolver 3 constant.
According to the water supply flow in the furnace and the real-time flow of the delivery pump 2, the automatic pressure regulator 7 is adjusted to control the ammonia inlet pressure of the ammonia dissolver 3, further control the ammonia concentration in the ammonia-oxygen aqueous solution in the ammonia dissolver 3, and finally adjust the pH value of the water supply in the furnace, so that the pH value and the dissolved oxygen value of the water supply in the furnace realize the coordination control of all working conditions.
Claims (7)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759666.5A CN113354053A (en) | 2021-07-05 | 2021-07-05 | Ammonia-oxygen mixed feeding system and working method thereof |
| PCT/CN2021/115546 WO2023279502A1 (en) | 2021-07-05 | 2021-08-31 | Ammonia-oxygen mixing and adding system and working method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110759666.5A CN113354053A (en) | 2021-07-05 | 2021-07-05 | Ammonia-oxygen mixed feeding system and working method thereof |
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| CN113354053A true CN113354053A (en) | 2021-09-07 |
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| CN202110759666.5A Pending CN113354053A (en) | 2021-07-05 | 2021-07-05 | Ammonia-oxygen mixed feeding system and working method thereof |
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| WO (1) | WO2023279502A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217900A (en) * | 2019-04-18 | 2019-09-10 | 西安热工研究院有限公司 | A kind of automatic oxygenation of power plant water supply and the collaboration precise control device and method of ammonification |
| CN111377517A (en) * | 2020-05-01 | 2020-07-07 | 西安热工研究院有限公司 | System and method for treating water in thermal power plant furnace based on ammonia oxygen water |
| CN215403298U (en) * | 2021-07-05 | 2022-01-04 | 西安热工研究院有限公司 | Ammonia-oxygen mixed feeding system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101851020B (en) * | 2010-04-29 | 2012-02-01 | 浙江省电力试验研究院 | Directed Oxidation Feedwater Treatment Process for Once-through Boiler |
| CN103880230B (en) * | 2014-03-26 | 2015-04-08 | 西安热工研究院有限公司 | Segmental oxidation treatment system and treatment method of thermodynamic system of novel coal-fired power plant |
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2021
- 2021-07-05 CN CN202110759666.5A patent/CN113354053A/en active Pending
- 2021-08-31 WO PCT/CN2021/115546 patent/WO2023279502A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217900A (en) * | 2019-04-18 | 2019-09-10 | 西安热工研究院有限公司 | A kind of automatic oxygenation of power plant water supply and the collaboration precise control device and method of ammonification |
| CN111377517A (en) * | 2020-05-01 | 2020-07-07 | 西安热工研究院有限公司 | System and method for treating water in thermal power plant furnace based on ammonia oxygen water |
| CN215403298U (en) * | 2021-07-05 | 2022-01-04 | 西安热工研究院有限公司 | Ammonia-oxygen mixed feeding system |
Non-Patent Citations (1)
| Title |
|---|
| 王宁飞 等: ""氨氧混加联动控制技术的可行性分析"", 《中国环境科学学会2019年科学技术年会——环境工程技术创新与应用分论坛文集（四）》, pages 693 * |
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| WO2023279502A1 (en) | 2023-01-12 |
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Application publication date: 20210907 |