CN108249406B - Cooling water system cold source recycling device of large-scale ozone generator - Google Patents
Cooling water system cold source recycling device of large-scale ozone generator Download PDFInfo
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- CN108249406B CN108249406B CN201611246476.9A CN201611246476A CN108249406B CN 108249406 B CN108249406 B CN 108249406B CN 201611246476 A CN201611246476 A CN 201611246476A CN 108249406 B CN108249406 B CN 108249406B
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- cooling water
- vaporizer
- ozone generator
- stainless steel
- water system
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
The invention discloses a cold source recycling device of a large-scale ozone generator cooling water system, which consists of a DCS intelligent measurement and control system, an inner circulating cooling water system, an outer circulating cooling water system and a liquid oxygen system for industrial air separation oxygen production, wherein the inner circulating cooling water system and the outer circulating cooling water system are connected through a vaporizer, a 316L stainless steel plate type heat exchanger and an ozone generator discharge chamber, the vaporizer is immersed in a stainless steel water tank filled with water, when the device works, liquid oxygen is converted into gaseous oxygen through the vaporizer to absorb a large amount of heat, so that water in the stainless steel water tank is rapidly cooled to form cooling water to be directly used as a cold source of an ozone generator discharge chamber, and then the cooling water is cooled by the 316L stainless steel plate type heat exchanger and returned to the stainless steel water tank immersed in the vaporizer for cooling, thereby realizing cold source recycling. The invention has the advantages of energy saving and electricity saving, extremely low failure rate, and far better comprehensive cooling effect and operation index than the traditional cooling method.
Description
Technical Field
The invention relates to the technical field of cooling water or cooling of a large-sized ozone generator, in particular to a cold source recycling device of the cooling water system of the large-sized ozone generator.
Background
When the large or giant ozone generator system works, the ozone output is usually ten to hundreds of kilograms per hour, because the industrial application of the large ozone generator mostly adopts a DBD dielectric insulation blocking corona discharge mode to produce synthetic ozone, the efficiency is lower than ten percent, the ozone generator mostly consumes energy in the forms of heat, light, sound and the like, particularly, when the ozone is generated by discharging, most of electric energy in the form of heat appears in the discharging energy, a large amount of cold source energy or cooling water source is needed to cool a discharge chamber of the ozone generator, otherwise, the generated ozone is thermally decomposed into oxygen by the discharged heat. At present, two cooling methods for cooling a discharge chamber during the working of a large-scale ozone generating device exist in the world: firstly, purified water or deionized water is used as an internal circulating cooling water system of the ozone generator, but the temperature of external cooling water often reaches 30 ℃ or more in summer on the industrial or user site, the cooling effect is poor, the ozone generator and the working efficiency are directly influenced, the power consumption is increased, the energy waste is extremely high, even the ozone generator equipment is damaged, and the shutdown and the production stop are caused; secondly, the industrial water chiller is used for cooling the discharge chamber when the large-sized ozone generator works, the cooling effect of the industrial water chiller is good, but the running energy consumption is huge, and the industrial water chiller can meet the requirements only by being configured with high-power running, so that the ozone production cost is huge, the running cost is too high, and the ozone is difficult to bear by users.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a cooling source recycling device of a cooling water system of a large-sized ozone generator, which has the advantages of stable and reliable operation effect, little energy consumption, low failure rate, comprehensive cooling effect and operation index which are far superior to the two cooling methods of the large-sized ozone generator currently used in the world.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the cold source recycling device of the cooling water system of the large-scale ozone generator comprises a DCS intelligent measurement and control system, an inner circulating cooling water system, an outer circulating cooling water system and a liquid oxygen system for producing oxygen by industrial air separation, wherein the liquid oxygen system for producing oxygen by industrial air separation consists of a liquid oxygen storage tank, a vaporizer and a pressure reducing valve group, and is connected with the inner circulating cooling water system and the outer circulating cooling water system through the vaporizer; the inner circulating cooling water system and the outer circulating cooling water system are connected through a vaporizer, a 316L stainless steel plate type heat exchanger and an ozone generator discharge chamber; the vaporizer is immersed in a stainless steel water tank filled with water.
Further, the internal circulation cooling water system consists of a variable-frequency water pump, an on-site thermometer, a pressure gauge, a temperature transmitter, a flowmeter, a pure water tank and a 316L stainless steel plate type heat exchanger.
Further, the external circulation cooling water system consists of a vaporizer, a pressure reducing valve group, a glass fiber reinforced plastic air shower tower, a variable-frequency water pump, an on-site thermometer, a temperature transmitter, an oxygen dew point analyzer, a quick pneumatic valve and an audible and visual alarm device.
Further, the stainless steel water tank in which the vaporizer Cheng Manshui is immersed is made of 304L or 316L stainless steel, and the vaporizer is made of an aluminum alloy material.
Further, the liquid oxygen system for industrial air separation oxygen production can use a liquid nitrogen vaporizer as a cold source.
Further, the water temperature of the stainless steel water tank can be controlled to be 10-15 ℃.
Further, the number of the 316L stainless steel plate type heat exchangers is at least 1.
Further, the DCS intelligent monitoring system can automatically control the oxygen supply of the ozone generator and monitor the leakage of the vaporizer, once the vaporizer leaks, the DCS intelligent monitoring system automatically and rapidly closes the pneumatic valve, cuts off the oxygen supply to the ozone generator and protects the equipment from operation faults when the equipment is shut down, and the computer display screen gives an audible and visual alarm on site.
When the cooling device is used, the water tank made of 316L stainless steel is filled with water, the aluminum alloy vaporizer is immersed in the water, the water temperature is regulated, the water temperature is kept at low-temperature cold water of 10-15 ℃, liquid oxygen is converted into gaseous oxygen through the vaporizer to absorb a large amount of heat, so that the water in the stainless steel water tank is cooled to form cooling water, the cooling water is directly used as a cooling water source of the ozone generator discharge chamber through an internal circulation refrigerating water system, heat generated by the ozone generator discharge chamber during working is conducted through the internal circulation cooling water, and then the cooling water is cooled through the 316L stainless steel plate type heat exchanger and returned to the stainless steel water tank immersed in the vaporizer for cooling.
Compared with the prior art, the invention has the beneficial effects that:
the invention can effectively realize the effect of directly absorbing and recycling cold source water wasted in air when liquid oxygen passes through the vaporizer, adopts a cold source circulating chilled water recycling mode to avoid the phenomenon that the cold source is wasted in the air to cause the vaporizer to snow, has huge oxygen consumption and corresponding cold yield, completely meets the use of a large-scale ozone generator, is a natural water chiller changing waste into valuables, has performance which is not inferior to that of an industrial water chiller, has the characteristics of energy conservation, consumption reduction, environmental protection, waste material changing and circular economy development mode, has great social benefit, economic benefit and environmental protection benefit, and belongs to a sustainable development environment-friendly circular economy development mode advocated by China.
Drawings
FIG. 1 is a schematic diagram of a cooling source recycling device of a cooling water system of a large-sized ozone generator.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and based on the embodiments in this application, those skilled in the art may obtain other similar embodiments without making any inventive effort, and any structural modification belongs to the technical variation as long as a vaporizer of a liquid oxygen system is used as a cold source of a discharge chamber of an ozone generator, or a vaporizer of liquid nitrogen is used as a cold source for other systems, which are all within the scope of the present technology.
Examples:
as shown in FIG. 1, the cold source recycling device of the cooling water system of the large-scale ozone generator comprises a DCS intelligent measurement and control system, an inner circulating cooling water system, an outer circulating cooling water system and a liquid oxygen system for producing oxygen by industrial air separation, wherein the liquid oxygen system for producing oxygen by industrial air separation consists of a liquid oxygen storage tank, a vaporizer and a pressure reducing valve group, and is connected with the inner and outer circulating cooling water systems through the vaporizer; the internal circulation cooling water system and the external circulation cooling water system are connected with each other through a vaporizer, a 316L stainless steel plate type heat exchanger and a discharge chamber of a large-sized (giant) ozone generator;
the internal circulation cooling water system consists of a variable-frequency water pump 1 and an in-situ thermometer T 1 Pressure gauge P 1 Flow switch LK 1 316L stainless steel plate type heat exchanger, variable-frequency water pump 3 and in-situ thermometer T 2 Pressure gauge P 2 Flow switch LK 2 The discharge chamber of the large-sized (giant) ozone generator consists of a purified water or deionized water tank 1.
The external circulation cooling water system consists of a pressure reducing valve group, a vaporizer and an on-site thermometer T 3 TL temperature transmitter 3 Variable-frequency water pump 2, glass fiber reinforced plastic air shower tower and in-situ thermometer T 4 TL temperature transmitter 4 Pressure transmitter PL 3 The device comprises pure water or deionized water tank 2, an oxygen dew point analyzer, a quick pneumatic valve and an audible and visual alarm device.
When the cooling water tank is used, the water tank made of 304L or 316L stainless steel is filled with water, the aluminum alloy vaporizer is immersed in the water, the water temperature is regulated, the water temperature is kept at low-temperature cold water of 10-15 ℃, liquid oxygen is converted into gaseous oxygen through the vaporizer to absorb a large amount of heat, so that the water in the stainless steel water tank is cooled to form cooling water, the cooling water is directly used as a cooling water source of an ozone generator discharge chamber through an internal circulation refrigerating water system, the heat generated by the ozone generator discharge chamber during working is conducted by the internal circulation cooling water to conduct heat, then the cooling water is cooled through the 316L stainless steel plate type heat exchanger, and is returned to the stainless steel water tank immersed in the vaporizer through an external circulation refrigerating water system to be cooled again, so that the temperature balance of the internal and external circulation water system is achieved, and the temperature balance value is controllable and adjustable.
In order to prevent the aluminum alloy vaporizer from leaking along with the prolonging of the service life, the invention is specially provided with a safety precaution and protection measure, and for a DCS intelligent monitoring system, no pressure is generated when the vaporizer does not work in a liquid oxygen system, water leaks into an oxygen pipeline system.
Engineering operation practice: taking a 100kg/h ozone generator system for operation in a certain project as an example: the cooling water system only saves 200KWH per hour, the electricity per degree is 0.80 yuan, the electricity saving cost is 200 multiplied by 24 multiplied by 0.8= 0.3840 ten thousand yuan per day, and the electricity saving cost is 365 multiplied by 3840.00 = 140.16 ten thousand yuan per year.
The engineering operation effect is that the internal circulation temperature is higher than the external circulation temperature by 3-5 ℃, the internal circulation water temperature is 10-15 ℃ in winter and 18-22 ℃ in summer, the cooling water temperature requirement of the large-scale (giant) ozone generator in operation is met, the cooling effect is stable and reliable, the failure rate is extremely low, the water, electricity and labor are saved, the parts and components are saved, the energy saving and consumption reducing effects are obvious, and the comprehensive benefit is greatly improved.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The cold source recycling device of the cooling water system of the large-scale ozone generator is characterized by comprising a DCS intelligent monitoring system, an inner circulating cooling water system, an outer circulating cooling water system and a liquid oxygen system for producing oxygen by industrial air separation, wherein the liquid oxygen system for producing oxygen by industrial air separation comprises a liquid oxygen storage tank, a vaporizer and a pressure reducing valve group, and is connected with the inner circulating cooling water system and the outer circulating cooling water system through the vaporizer; the inner circulating cooling water system and the outer circulating cooling water system are connected through a vaporizer, a 316L stainless steel plate type heat exchanger and an ozone generator discharge chamber; the vaporizer is immersed in a stainless steel water tank filled with water; the DCS intelligent monitoring system automatically controls oxygen supply of the ozone generator and monitors leakage of the vaporizer by controlling the pneumatic valve and the audible and visual alarm; when the cooling device is used, liquid oxygen is converted into gaseous oxygen through the vaporizer to absorb heat, so that water in the stainless steel water tank is cooled to form cooling water which is directly used as a cooling water source of the ozone generator discharge chamber, heat generated during the operation of the ozone generator discharge chamber is conducted through internal circulating cooling water, and then the cooling water is cooled through the 316L stainless steel plate type heat exchanger and returned to the stainless steel water tank immersed in the vaporizer for recooling.
2. The cold source recycling device for the cooling water system of the large-scale ozone generator according to claim 1, wherein the internal circulating cooling water system consists of a variable-frequency water pump, an on-site thermometer, a pressure gauge, a temperature transmitter, a flowmeter, a pure water tank and a 316L stainless steel plate type heat exchanger.
3. The cold source recycling device for the cooling water system of the large-scale ozone generator according to claim 1, wherein the external circulating cooling water system consists of a vaporizer, a pressure reducing valve group, a glass fiber reinforced plastic air shower tower, a variable-frequency water pump, an on-site thermometer, a temperature transmitter, an oxygen dew point analyzer, a rapid pneumatic valve and an audible-visual alarm device.
4. A large-scale ozone generator cooling water system cold source recycling device as set forth in any one of claims 1-3, wherein the stainless steel water tank immersed with the vaporizer Cheng Manshui is made of 304L or 316L stainless steel, and the vaporizer is made of aluminum alloy material.
5. The cold source recycling device for a cooling water system of a large-scale ozone generator according to any one of claims 1-3, wherein the liquid oxygen system for producing oxygen by industrial air separation adopts a liquid nitrogen vaporizer as a cold source.
6. A large-scale ozone generator cooling water system cold source recycling device according to any one of claims 1-3, wherein the number of the 316L stainless steel plate type heat exchangers is at least 1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611246476.9A CN108249406B (en) | 2016-12-29 | 2016-12-29 | Cooling water system cold source recycling device of large-scale ozone generator |
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| CN201611246476.9A CN108249406B (en) | 2016-12-29 | 2016-12-29 | Cooling water system cold source recycling device of large-scale ozone generator |
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| CN108249406A CN108249406A (en) | 2018-07-06 |
| CN108249406B true CN108249406B (en) | 2023-06-30 |
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| CN111072226A (en) * | 2019-12-25 | 2020-04-28 | 宁波鑫领纳米科技有限公司 | Integrated water treatment equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2034032A1 (en) * | 1991-01-11 | 1992-07-12 | Eskil Karlson | Ozone generation by corona discharge at elevated pressures |
| CN103162491A (en) * | 2011-12-18 | 2013-06-19 | 江苏康尔臭氧有限公司 | Ozone generator circulation cooling device |
| CN105174223A (en) * | 2015-08-13 | 2015-12-23 | 徐金飞 | Self-cooling ozone generator |
| CN206437871U (en) * | 2016-12-29 | 2017-08-25 | 青岛中通臭氧科技有限公司 | A kind of large-scale ozone generator cooling water system low-temperature receiver recycle and reuse device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819947B2 (en) * | 2008-02-12 | 2010-10-26 | Air Products And Chemical, Inc. | Ozone production by pressure swing adsorption using a protective adsorbed component |
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2016
- 2016-12-29 CN CN201611246476.9A patent/CN108249406B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2034032A1 (en) * | 1991-01-11 | 1992-07-12 | Eskil Karlson | Ozone generation by corona discharge at elevated pressures |
| CN103162491A (en) * | 2011-12-18 | 2013-06-19 | 江苏康尔臭氧有限公司 | Ozone generator circulation cooling device |
| CN105174223A (en) * | 2015-08-13 | 2015-12-23 | 徐金飞 | Self-cooling ozone generator |
| CN206437871U (en) * | 2016-12-29 | 2017-08-25 | 青岛中通臭氧科技有限公司 | A kind of large-scale ozone generator cooling water system low-temperature receiver recycle and reuse device |
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