CN113460966B - Ozone separation system and method for generating high-concentration ozone mixed gas by utilizing liquid oxygen - Google Patents
Ozone separation system and method for generating high-concentration ozone mixed gas by utilizing liquid oxygen Download PDFInfo
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- CN113460966B CN113460966B CN202110749063.7A CN202110749063A CN113460966B CN 113460966 B CN113460966 B CN 113460966B CN 202110749063 A CN202110749063 A CN 202110749063A CN 113460966 B CN113460966 B CN 113460966B
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 238
- 239000007789 gas Substances 0.000 title claims abstract description 105
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000000926 separation method Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000001301 oxygen Substances 0.000 claims abstract description 127
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 127
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 238000002156 mixing Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 8
- 229910001882 dioxygen Inorganic materials 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The application discloses an ozone separation system and method for generating high-concentration ozone mixed gas by utilizing liquid oxygen, and belongs to the technical field of ozone preparation. The device comprises a first heat exchange tube, a heating device, an ozone generator, a second heat exchange tube, a third heat exchange tube, a fourth heat exchange tube and an air outlet in turn in the flow direction of oxygen; the third heat exchange tube can exchange heat with the first heat exchange tube; the first heat exchange tube comprises a first input end and a first output end, liquid oxygen can be input into the first input end, and the liquid oxygen can be output from the first output end through heat exchange; the third heat exchange tube comprises an oxygen output end and an ozone output end, and the ozone and oxygen mixed gas generated by the ozone generator can be respectively output by the ozone output end and the oxygen output end through heat exchange; the fourth heat exchange tube can exchange heat with the second heat exchange tube. The application can effectively utilize the cold energy of liquid oxygen and the oxygen generated by the liquid oxygen, thereby generating ozone-oxygen mixed gas with high ozone concentration for direct use by users.
Description
Technical Field
The application belongs to the technical field of ozone preparation, and particularly relates to an ozone separation system and an ozone separation method for generating high-concentration ozone mixed gas by utilizing liquid oxygen.
Background
Ozone is widely applied to a plurality of fields such as sewage treatment, drinking water treatment disinfection, food processing sterilization purification, perishable food storage, mildew prevention and fresh-keeping, medical treatment and health, household disinfection purification, chemical industry and the like. In the preparation of ozone, ozone is mainly prepared by high-voltage corona discharge, but the concentration of the prepared ozone is very low due to the limitation of technical conditions. The content of ozone is only about 10vol% by using oxygen as a raw material, and is lower when air is used as a raw material gas. In order to ensure the concentration and the use efficiency of ozone, most of the industrial application at present uses liquid oxygen as raw material gas to generate ozone after temperature and pressure rise. Only 10% of the oxygen in the raw material gas in the product is utilized to generate ozone, and the rest of the oxygen is discharged without recycling, so that a large amount of oxygen is wasted, and the operation cost is high.
Along with the gradual increase of the application of the advanced ozone oxidation technology, the advanced ozone oxidation technology and the use of an ozone generator are gradually accepted by markets and owners, and the problems of low concentration of ozone produced by the ozone generator and low oxygen utilization rate lead to obvious increase of the cost of the advanced ozone oxidation technology and limited application range. In order to increase the ozone concentration at the ozone utilization end, researchers have been looking for ways to separate ozone from oxygen. If ozone and oxygen can be separated, the concentration of the ozone can be increased, the oxygen can be recovered, the popularization and the use of the advanced ozone oxidation technology are facilitated, the ozone utilization efficiency is improved, the oxygen can be saved, and the running cost is reduced.
Through searching, chinese patent No. 103663384A discloses a method for separating mixed gas of oxygen and ozone and an ozone generating system using the same, wherein the temperature of the mixed gas of ozone and oxygen is reduced to be between the boiling point temperature of ozone and the boiling point temperature of oxygen by utilizing a heat exchanger and refrigerant so that the ozone is converted into liquid state, and the oxygen is still in gas state, thereby separating the mixed gas of oxygen and ozone; the application also discloses an ozone generating system utilizing the separation method, which comprises an ozone generator, an air source of the ozone generator, an air source supply device of the ozone generator, a cold medium and refrigerant supply device, a heat exchanger and the like. Although the patent can effectively separate ozone and oxygen, the system inevitably uses a refrigerant medium and a refrigerant substance supply device, and the liquid ozone is gasified by a carburetor after being separated, and meanwhile, a cold source and a heat source required by separation are wasted; in addition, in the art, since the ozone with high purity is easy to explode and cannot be directly used, even if pure ozone is prepared, the ozone needs to be mixed with a mixed gas such as oxygen and air, and in the patent, extra air is just added as the mixed gas, so that a part of raw materials and processes are wasted.
As disclosed in chinese patent No. CN112408334a, an ozone production system for increasing ozone yield and a method for producing ozone thereof specifically disclose an air pretreatment device, an oxygen supply device and an ozone generator; the air pretreatment device is sequentially provided with an air compressor, an oil-water separator, a cold dryer, a dryer, an air filter and a pressure reducing valve; the oxygen supply device comprises a liquid oxygen vaporizer, wherein the vaporized oxygen is merged into a gas pipeline after a pressure reducing valve and enters an ozone generator after being mixed with air; the ozone generator comprises a plurality of reaction chambers, a high-voltage electrode plate, a low-voltage electrode plate and a cooling water pipe are arranged in each reaction chamber, and mixed gas of oxygen and air is introduced into each reaction chamber in a parallel mode. The patent mainly improves the ozone generator, has advantages in the aspects of full reaction and heat dissipation of raw materials, so that the yield of ozone is improved, but the patent directly adopts a liquid oxygen gasifier to gasify liquid oxygen on the premise of using liquid oxygen, and the chilling capacity of the liquid oxygen is lost; in addition, the patent directly vents the finally separated ozone, and does not describe the subsequent operation thereof, so that additional gas may be added to be mixed therewith.
In summary, although the concentration of ozone produced by the ozone generator in the prior art is low, the separation technology of ozone and oxygen is basically mature; however, in the case of using liquid oxygen as a raw material, it is a current problem to effectively utilize the cold energy of the liquid oxygen to separate ozone from oxygen and to utilize oxygen which is generated during gasification itself, thereby minimizing energy loss.
Therefore, there is a need to design a device or method for effectively utilizing liquid oxygen to generate high-concentration ozone mixed gas, which can recycle oxygen and improve the concentration of ozone, thereby reducing the operation and investment costs so as to meet the use demands of people.
Disclosure of Invention
1. Problems to be solved
Aiming at the problems that an additional refrigerant medium and an additional gas are needed when an ozone mixed gas is prepared by an ozone separation device or method based on low-temperature separation in the prior art and the ozone concentration is low, the application provides an ozone separation system and a method for generating high-concentration ozone mixed gas by utilizing liquid oxygen; by reasonably arranging the heat exchange tube, the heating device and the ozone generator and the connection relation among the heat exchange tube, the heating device and the ozone generator, the problems that extra refrigerant medium and extra gas are needed and the ozone concentration is low when the ozone mixed gas is prepared by the low-temperature separation-based ozone separation device or method are effectively solved.
2. Technical proposal
In order to solve the problems, the technical scheme adopted by the application is as follows:
the application relates to an ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen, which sequentially comprises a first heat exchange tube, a heating device, an ozone generator, a second heat exchange tube, a third heat exchange tube, a fourth heat exchange tube and an air outlet in the flow direction of oxygen; the third heat exchange tube can exchange heat with the first heat exchange tube; the first heat exchange tube comprises a first input end and a first output end, liquid oxygen can be input into the first input end, and the liquid oxygen can be output from the first output end through heat exchange; the third heat exchange tube comprises an oxygen output end and an ozone output end, and the ozone and oxygen mixed gas generated by the ozone generator can be respectively output by the ozone output end and the oxygen output end through heat exchange; the fourth heat exchange tube can exchange heat with the second heat exchange tube; the fourth heat exchange tube comprises a fourth input end and a fourth output end, the fourth input end is connected with the oxygen output end of the third heat exchange tube, and the fourth output end and the ozone output end of the third heat exchange tube are connected with the air outlet.
Preferably, the heat exchange device further comprises a first heat exchanger, wherein the third heat exchange tube and the first heat exchange tube are arranged in the first heat exchanger; the third heat exchange tube further includes a third input.
Preferably, the heat exchange device further comprises a second heat exchanger, wherein the fourth heat exchange tube and the second heat exchange tube are arranged in the second heat exchanger; the second heat exchange tube further comprises a second input end and a second output end; the second output terminal is connected to the third input terminal.
Preferably, the heating device comprises a heating device input and a heating device output; the input end of the heating device is connected with the first output end, and the output end of the heating device is connected with the ozone generator.
Preferably, the heating device is an oxygen purifier; the oxygen purifier sequentially comprises a heat exchange tube I, a heater and a heat exchange tube II in the oxygen flow direction, wherein the heat exchange tube I can exchange heat with the heat exchange tube II.
Preferably, the ozone generator comprises a generator input and a generator output; a fan is arranged between the generator input end and the heating device output end, the fan comprises a fan input end and a fan output end, the fan input end is connected with the heating device output end, and the fan output end is connected with the generator input end.
Preferably, the device further comprises an exhaust ozone destructor, the exhaust ozone destructor comprising a destructor input and a destructor output; the breaker input links to each other with the fourth output, the breaker output links to each other with the fan input.
Preferably, the gas mixing device further comprises a gas mixing tank, wherein the gas mixing tank comprises a mixing tank input end I and a mixing tank input end II, and the gas outlet is arranged on the gas mixing tank; the mixing tank input end I is connected with the fourth output end, and the mixing tank input end II is connected with the ozone output end.
Preferably, a first regulating valve is arranged on a pipeline connected between the mixing tank input end I and the fourth output end, and a second regulating valve is arranged on a pipeline connected between the mixing tank input end II and the ozone output end.
Preferably, the device also comprises a liquid oxygen tank, wherein a liquid oxygen output end is arranged on the liquid oxygen tank; the liquid oxygen output end is connected with the first input end.
The application relates to an ozone separation method for generating high-concentration ozone mixed gas by utilizing liquid oxygen, which is based on an ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen; and treating the liquid oxygen by the ozone separation system to generate mixed gas containing ozone and oxygen.
Preferably, the specific operation steps are:
(1) Liquid oxygen is input into the first heat exchange tube through the first input end to exchange heat with the third heat exchange tube to generate oxygen;
(2) Heating the oxygen generated in the step (1) to-10-20 ℃, and then introducing an ozone generator to generate a mixed gas A of ozone and oxygen;
(3) Introducing the mixed gas A into the second heat exchange tube to exchange heat with the fourth heat exchange tube, and then introducing the mixed gas A into the third heat exchange tube to exchange heat with the first heat exchange tube to generate oxygen and liquid ozone N;
(4) Introducing the oxygen generated in the step into a fourth heat exchange tube to exchange heat with the second heat exchange tube, and outputting to obtain oxygen M;
(5) And mixing the oxygen M with the liquid ozone N, and outputting the mixed gas B of ozone and oxygen through an air outlet.
Preferably, the fourth output end of the fourth heat exchange tube is connected with the generator input end of the ozone generator through a pipeline, and an exhaust ozone destructor is arranged on the pipeline, and the oxygen M output by the fourth output end is processed by the exhaust ozone destructor and then is input into the ozone generator.
Preferably, the first pipeline is passed through liquid oxygen, the temperature of which is about-180 ℃, the pressure is 0.8MPa, and the flow rate is 3.5kg/h; the heat exchange power of the first heat exchanger is 0.24kW; the second pipeline is through oxygen, its temperature is-120 deg.C, the pressure is 0.14MPa, the flow rate is 3.5kg/h; the third pipeline is passed through oxygen gas whose temperature is-10deg.C, pressure is 0.14MPa and flow rate is 3.5kg/h, and the pressure of said oxygen gas is raised by about 0.2MPa and flow rate is 5m after the pressure of said oxygen gas is raised by means of 0.25kW fan on the fourth pipeline 3 /h; the fifth pipeline is used for passing through a mixed gas A of ozone and oxygen, the temperature of the mixed gas A is 20 ℃, the pressure is 0.2MPa, the flow rate of the oxygen is 9kg/h, and the flow rate of the ozone is 1kg/h; the heat exchange power of the second heat exchanger is 0.4kW; the sixth pipeline is through the mixture of ozone and oxygen gas and liquid, its temperature is-110 deg.C, the pressure is 0.2MPa, the flow is 10kg/h; the seventh pipeline is through oxygen, its temperature is-170 deg.C, the pressure is 0.2MPa, the flow is 9kg/h; eighth pipeThe liquid ozone passes through the pipeline, the temperature is-170 ℃, the pressure is 0.2MPa, and the flow is 1kg/h; the ninth pipeline is through oxygen, its temperature is 0 ℃, the pressure is 0.2MPa, the flow is 9kg/h; the tenth pipeline is used for passing oxygen with the temperature of 0 ℃, the pressure of 0.14MPa and the flow rate of 2.5 kg/h; the eleventh pipeline is passed through by oxygen with the temperature of 0 ℃, the pressure of 0.14MPa and the flow rate of 6.5 kg/h.
3. Advantageous effects
Compared with the prior art, the application has the beneficial effects that:
(1) The application relates to an ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen, which sequentially comprises a first heat exchange tube, a heating device, an ozone generator, a second heat exchange tube, a third heat exchange tube, a fourth heat exchange tube and an air outlet in the flow direction of oxygen; the third heat exchange tube can exchange heat with the first heat exchange tube; the first heat exchange tube comprises a first input end and a first output end, liquid oxygen can be input into the first input end, and the liquid oxygen can be output from the first output end through heat exchange; the third heat exchange tube comprises an oxygen output end and an ozone output end, and the ozone and oxygen mixed gas generated by the ozone generator can be respectively output by the ozone output end and the oxygen output end through heat exchange; the fourth heat exchange tube can exchange heat with the second heat exchange tube; the fourth heat exchange tube comprises a fourth input end and a fourth output end, the fourth input end is connected with the oxygen output end of the third heat exchange tube, and the fourth output end and the ozone output end of the third heat exchange tube are both connected with the air outlet; through the arrangement, firstly, the third heat exchange tube and the first heat exchange tube exchange heat, so that ozone-oxygen mixed gas A generated by the ozone generator can be separated by utilizing the cold energy of liquid oxygen, extra refrigerant media are saved, and secondly, the heating device provides heat for heat exchange among the heat exchange tubes for the whole system, so that on one hand, a cooling separation basis is provided for the ozone-oxygen mixed gas generated by the ozone generator, and on the other hand, output oxygen with higher temperature is obtained under the heat exchange effect of the fourth heat exchange tube and the second heat exchange tube, and at the moment, the output oxygen is mixed with the separated liquid ozone to obtain mixed gas B, so that the additional mixed gas is not needed to be added, and the liquid ozone is not needed to be further gasified for use, thereby effectively saving energy sources; in short, under the treatment effect of the ozone separation system, the liquid oxygen can also serve as a refrigerant medium and a mixed gas source, and the cold energy and the generated oxygen can be effectively utilized, so that the ozone-oxygen mixed gas with high ozone concentration is generated for direct use by users.
(2) According to the ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen, for the existing ozone advanced oxidation project, the original device is not required to be removed, and only part of heat exchange pipelines and connecting pipelines between the heat exchange pipelines are required to be additionally arranged, so that the cold quantity of the liquid oxygen and the oxygen generated by the liquid oxygen can be effectively utilized, and the running cost is reduced.
(3) The application relates to an ozone separation method for generating high-concentration ozone mixed gas by utilizing liquid oxygen, which is based on an ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen; liquid oxygen is treated by the ozone separation system to generate mixed gas containing ozone and oxygen; according to the method, liquid oxygen can be used as a reactant for generating ozone and can also be used as a refrigerant medium and a mixed gas source, on the basis, the ozone ratio of the finally prepared ozone-oxygen mixed gas for rear-end sewage treatment can be regulated and controlled within the range of 0-28.57 wt%, so that the ozone concentration in the ozone-oxygen mixed gas can be regulated and controlled within a large range for different occasions and different personnel to meet the use requirements, and the maximum ozone concentration can reach 28.57wt%, which is far higher than that of a conventional ozone generator for generating ozone with the concentration of about 10wt%, and the problem of low ozone concentration generated by the conventional ozone generator is solved.
Drawings
FIG. 1 is a schematic diagram I of an ozone separation system for generating a high-concentration ozone mixed gas by utilizing liquid oxygen;
FIG. 2 is a schematic diagram II of an ozone separation system for generating a high concentration ozone gas mixture using liquid oxygen according to the present application.
In the figure:
100. a liquid oxygen tank; 101. a liquid oxygen output;
200. a first heat exchanger; 210. a first heat exchange tube; 211. a first input; 212. a first output terminal; 220. a third heat exchange tube; 221. a third input; 222. an ozone output end; 223. an oxygen output; 280. a second regulating valve;
300. a heating device; 310. a heat exchange tube I; 311. an input of the heating device; 320. a heater; 330. a heat exchange tube II; 331. an output end of the heating device;
400. a blower; 401. the fan input end; 402. the output end of the fan;
500. an ozone generator; 501. an input of the generator; 502. the output end of the generator;
600. a second heat exchanger; 610. a second heat exchange tube; 611. a second output terminal; 612. a second input terminal; 620. a fourth heat exchange tube; 621. a fourth input; 622. a fourth output terminal;
700. a tail gas ozone destructor; 701. a breaker input; 702. the output end of the breaker; 780. a first regulating valve;
800. a gas mixing tank; 801. mixing tank input I; 802. mixing tank input II; 803. an air outlet;
901. a first pipeline; 902. a second pipeline; 903. a third pipeline; 904. a fourth pipeline; 905. a fifth pipeline; 906. a sixth pipeline; 907. a seventh pipeline; 908. an eighth pipeline; 909. a ninth pipeline; 910. a tenth pipeline; 911. and an eleventh pipeline.
Detailed Description
The following more detailed description of the embodiments of the application is not intended to limit the scope of the application, as claimed, but is merely illustrative and not limiting of the application's features and characteristics in order to set forth the best mode of carrying out the application and to sufficiently enable those skilled in the art to practice the application. It will be understood that various modifications and changes may be made without departing from the scope of the application as defined by the appended claims. The detailed description and drawings are to be regarded in an illustrative rather than a restrictive sense, and if any such modifications and variations are desired to be included within the scope of the application described herein. Furthermore, the background art is intended to illustrate the state of the art and the meaning of the development and is not intended to limit the application or the field of application of the application.
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and therefore should not be construed as limiting the application, but rather as limiting the scope of the application, so that any structural modifications, proportional changes, or dimensional adjustments should fall within the scope of the application without affecting the efficacy or achievement thereof. Also, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The application is further described below in connection with specific embodiments.
Example 1
The present embodiment provides an ozone separation system for generating a high concentration ozone mixed gas using liquid oxygen, which sequentially includes a liquid oxygen tank 100, a first heat exchange tube 210, a heating device 300, an ozone generator 500, a second heat exchange tube 610, a third heat exchange tube 220, a fourth heat exchange tube 620, and an air outlet 803 in the flow direction of oxygen; the liquid oxygen tank 100 is provided with a liquid oxygen output end 101, and the liquid oxygen output end 101 is connected with a first input end 211; the third heat exchange tube 220 can exchange heat with the first heat exchange tube 210; the first heat exchange tube 210 includes a first input end 211 and a first output end 212, wherein the first input end 211 can input liquid oxygen, and the liquid oxygen can be subjected to heat exchange to output oxygen through the first output end 212; the third heat exchange tube 220 includes an oxygen output end 223 and an ozone output end 222, and the mixed gas of ozone and oxygen generated by the ozone generator 500 can be respectively output by the ozone output end 222 and the oxygen output end 223 through heat exchange; the fourth heat exchange tube 620 exchanges heat with the second heat exchange tube 610; the fourth heat exchange tube 620 includes a fourth input end 621 and a fourth output end 622, the fourth input end 621 is connected to the oxygen output end 223 of the third heat exchange tube 220, and the fourth output end 622 and the ozone output end 222 of the third heat exchange tube 220 are both connected to the air outlet 803.
In the present embodiment, the first heat exchanger 200 and the second heat exchanger 600 are further included; the third heat exchange tube 220 and the first heat exchange tube 210 are both disposed in the first heat exchanger 200; the third heat exchange tube 220 further includes a third input 221; the fourth heat exchange tube 620 and the second heat exchange tube 610 are both disposed in the second heat exchanger 600; the second heat exchange tube 610 further includes a second input end 612 and a second output end 611; the second output 611 is connected to the third input 221; therefore, in this embodiment, only two third heat exchange tubes 220 and first heat exchange tubes 210 that exchange heat with each other are disposed in the first heat exchanger 200, and two input ends and three output ends are disposed on the first heat exchanger 200, so as to complete the heat exchange and separation operation of ozone, and meanwhile, effectively improve the heat exchange efficiency between the heat exchange tubes, and avoid energy loss; the principle of the second heat exchanger 600 is the same, two fourth heat exchange tubes 620 and second heat exchange tubes 610 exchanging heat with each other are arranged in the second heat exchanger 600, and two input ends and two output ends are arranged on the second heat exchanger 600, so that the heat exchange operation can be completed.
In addition, the heating device 300 is an oxygen purifier, and the oxygen purifier sequentially comprises a heat exchange tube i 310, a heater 320 and a heat exchange tube ii 330 in the oxygen flow direction, wherein the heat exchange tube i 310 can exchange heat with the heat exchange tube ii 330; the heat exchange tube I310 is provided with a heating device input end 311, and the heat exchange tube II 330 is provided with a heating device output end 331; the heating device input end 311 is connected with the first output end 212, and the heating device output end 331 is connected with the ozone generator 500; therefore, when oxygen with the temperature of about-120 ℃ is treated by the oxygen purifier, the temperature of the oxygen can be raised to about 700 ℃ to remove the combustible impurities, then the temperature of the oxygen is reduced to about 0 ℃ by heat exchange between the heat exchange tube I310 and the heat exchange tube II 330, and the combustible impurities are removed while the temperature of the oxygen is moderately raised. The ozone generator 500 comprises a generator input 501 and a generator output 502; a fan 400 is arranged between the generator input end 501 and the heating device output end 331, the fan 400 comprises a fan input end 401 and a fan output end 402, the fan input end 401 is connected with the heating device output end 331, and the fan output end 402 is connected with the generator input end 501; also included is an exhaust ozone destructor 700, the exhaust ozone destructor 700 including a destructor input 701 and a destructor output 702; the disrupter input 701 is connected to a fourth output 622 and the disrupter output 702 is connected to the fan input 401; therefore, not only the above-described oxygen gas at about 0 ℃ treated by the oxygen purifier is reacted in the ozone generator 500, but also the oxygen gas outputted from the fourth output 622 is reacted in the ozone generator 500, thereby further utilizing the oxygen gas vaporized from the liquid oxygen in the liquid oxygen tank 100.
The ozone separation system in the embodiment further comprises a gas mixing tank 800, wherein the gas mixing tank 800 comprises a mixing tank input end I801 and a mixing tank input end II 802, and the gas outlet 803 is arranged on the gas mixing tank 800; the mixing tank input end I801 is connected with the fourth output end 622, and the mixing tank input end II 802 is connected with the ozone output end 222; a first regulating valve 780 is arranged on a pipeline connected between the input end I801 and the fourth output end 622 of the mixing tank, and a second regulating valve 280 is arranged on a pipeline connected between the input end II 802 of the mixing tank and the ozone output end 222; the liquid ozone and the oxygen are mixed by the gas mixing tank 800, and the two can be fully subjected to heat exchange so as to gasify the liquid ozone, and in addition, the ozone-oxygen mixed gas with the required proportion can be obtained under the adjustment action of the first adjusting valve 780 and the second adjusting valve 280 so as to be directly used by users.
The present embodiment also provides an ozone generating method for generating a high-concentration ozone mixed gas using liquid oxygen, which is based on an ozone separating system for generating a high-concentration ozone mixed gas using liquid oxygen described in the present embodiment; the liquid oxygen is treated by the ozone separation system to generate mixed gas containing ozone and oxygen, and the specific operation steps are as follows:
(1) Liquid oxygen with the temperature of-180 ℃ and the pressure of 0.8MPa and the flow rate of 3.5kg/h in the liquid oxygen tank 100 is input into the first heat exchanger 200 with the heat exchange power of 0.24kW through the first pipeline 901, and the liquid oxygen exchanges heat with the third heat exchange tube 220 in the first heat exchange tube 210 of the first heat exchanger 200 to generate oxygen with the temperature of-120 ℃ and the pressure of 0.14MPa and the flow rate of 3.5kg/h;
(2) Heating the oxygen generated in the step (1) to-10 ℃ through an oxygen purifier, introducing the oxygen into a blower 400 for boosting at a pressure of 0.14MPa and a flow rate of 3.5kg/h, and pressurizing the oxygen by the blower 400 at a pressure of 0.2MPa and a flow rate of 5m 3 Introducing an ozone generator 500 to react to generate a mixed gas A of ozone and oxygen, wherein the temperature of the oxygen in the mixed gas A is 20 ℃, the pressure is 0.2MPa, the flow rate is 9kg/h, the temperature of the ozone is 20 ℃, the pressure is 0.2MPa, and the flow rate is 1kg/h;
(3) Introducing the mixed gas A into a second heat exchange tube 610 and a fourth heat exchange tube 620 in a second heat exchanger 600 with heat exchange power of 0.4kW to exchange heat to obtain a gas-liquid mixture of ozone and oxygen, wherein the temperature is-110 ℃, the pressure is 0.2MPa, and the flow is 10kg/h; then the gas-liquid mixture is introduced into a third heat exchange tube 220 to exchange heat with the first heat exchange tube 210 to generate oxygen and liquid ozone N, wherein the temperature of the oxygen is 170 ℃ below zero, the pressure is 0.2MPa, the flow is 9kg/h, and the temperature of the liquid ozone N is 170 ℃ below zero, the pressure is 0.2MPa, and the flow is 1kg/h;
(4) Introducing the oxygen generated in the step (3) into a fourth heat exchange tube 620 to exchange heat with the second heat exchange tube 610, and outputting to obtain oxygen M, wherein the temperature of the oxygen M is 0 ℃, the pressure is 0.2MPa, and the flow is 9kg/h; the oxygen M splits into two branches: one path of oxygen with the temperature of 0 ℃ and the pressure of 0.14MPa and the flow rate of 2.5kg/h is introduced into the gas mixing tank 800 through a tenth pipeline 910; the other way of oxygen with the temperature of 0 ℃ and the pressure of 0.14MPa and the flow of 6.5kg/h is introduced into the tail gas ozone destructor 700 through the eleventh pipeline 911 to remove ozone possibly remained, and then the oxygen as a supplementary raw material enters the ozone generator 500 through the fan 400 to be recycled;
(5) Introducing the oxygen M in the step (4) and the liquid ozone N in the step (3) into a gas mixing tank 800 for mixing, and outputting mixed gas B of ozone and oxygen through a gas outlet 803 after mixing; at this time, the temperature of the mixed gas B and the ozone concentration thereof can be adjusted by controlling the first adjusting valve 780 and the second adjusting valve 280 so as to adapt to different requirements.
More specifically, although exemplary embodiments of the present application have been described herein, the present application is not limited to these embodiments, but includes any and all embodiments that have been modified, omitted, e.g., combined, adapted, and/or substituted between the various embodiments, as would be recognized by those skilled in the art in light of the foregoing detailed description. The limitations in the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the foregoing detailed description or during the prosecution of the application, which examples are to be construed as non-exclusive. Any steps recited in any method or process claims may be executed in any order and are not limited to the order presented in the claims. The scope of the application should, therefore, be determined only by the appended claims and their legal equivalents, rather than by the descriptions and examples given above.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In case of conflict, the present specification, definitions, will control. "flow, pressure, temperature, concentration, or other value or parameter is given as either a range, preferred range, or a range bounded by a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, a range of 1-50 should be understood to include any number, combination of numbers, or subranges of numbers selected from 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, or 50, as well as all fractional values between the integers described above, such as 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, and 1.9. Regarding sub-ranges, specifically considered are "nested sub-ranges" that extend from any end point within the range. For example, the nested subranges of exemplary ranges 1-50 can include 1-10, 1-20, 1-30, and 1-40 in one direction, or 50-40, 50-30, 50-20, and 50-10 in another direction. "
Claims (10)
1. An ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen is characterized by sequentially comprising a first heat exchange tube (210), a heating device (300), an ozone generator (500), a second heat exchange tube (610), a third heat exchange tube (220), a fourth heat exchange tube (620) and an air outlet (803) in the flow direction of oxygen;
the third heat exchange tube (220) can exchange heat with the first heat exchange tube (210); the first heat exchange tube (210) comprises a first input end (211) and a first output end (212), wherein the first input end (211) can input liquid oxygen, and the liquid oxygen can be subjected to heat exchange to output oxygen through the first output end (212); the third heat exchange tube (220) comprises an oxygen output end (223) and an ozone output end (222), and the ozone and oxygen mixed gas generated by the ozone generator (500) can be respectively output by the ozone output end (222) and the oxygen output end (223) through heat exchange;
the fourth heat exchange tube (620) can exchange heat with the second heat exchange tube (610); the fourth heat exchange tube (620) comprises a fourth input end (621) and a fourth output end (622), the fourth input end (621) is connected with the oxygen output end (223) of the third heat exchange tube (220), and the fourth output end (622) and the ozone output end (222) of the third heat exchange tube (220) are both connected with the air outlet (803);
the ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen further comprises a gas mixing tank (800), wherein the gas mixing tank (800) comprises a mixing tank input end I (801) and a mixing tank input end II (802), and the gas outlet (803) is arranged on the gas mixing tank (800); the mixing tank input end I (801) is connected with the fourth output end (622), and the mixing tank input end II (802) is connected with the ozone output end (222);
the ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen further comprises a first heat exchanger (200), wherein the third heat exchange tube (220) and the first heat exchange tube (210) are arranged in the first heat exchanger (200); the third heat exchange tube (220) further comprises a third input (221).
2. The ozone separation system for generating a high concentration ozone mixed gas using liquid oxygen according to claim 1, further comprising a second heat exchanger (600), wherein the fourth heat exchange tube (620) and the second heat exchange tube (610) are both disposed in the second heat exchanger (600); the second heat exchange tube (610) further comprises a second input (612) and a second output (611); the second output (611) is connected to the third input (221).
3. An ozone separation system for generating a high concentration ozone gas mixture using liquid oxygen as claimed in claim 1, wherein the heating means (300) comprises a heating means input (311) and a heating means output (331); the heating device input end (311) is connected with the first output end (212), and the heating device output end (331) is connected with the ozone generator (500).
4. An ozone separation system for generating a high concentration ozone gas mixture using liquid oxygen as claimed in claim 3, wherein said heating means (300) is an oxygen purifier; the oxygen purifier sequentially comprises a heat exchange tube I (310), a heater (320) and a heat exchange tube II (330) in the oxygen flow direction, wherein the heat exchange tube I (310) can exchange heat with the heat exchange tube II (330).
5. An ozone separation system for generating a high concentration ozone gas mixture using liquid oxygen as claimed in claim 3, characterized in that the ozone generator (500) comprises a generator input (501) and a generator output (502); a fan (400) is arranged between the generator input end (501) and the heating device output end (331), the fan (400) comprises a fan input end (401) and a fan output end (402), the fan input end (401) is connected with the heating device output end (331), and the fan output end (402) is connected with the generator input end (501).
6. An ozone separation system for generating a high concentration ozone gas mixture using liquid oxygen as claimed in claim 5, further comprising an exhaust ozone destructor (700), said exhaust ozone destructor (700) comprising a destructor input (701) and a destructor output (702); the disrupter input (701) is connected to a fourth output (622) and the disrupter output (702) is connected to the fan input (401).
7. The ozone separation system for generating a high concentration ozone mixed gas using liquid oxygen according to claim 6, wherein a first regulating valve (780) is arranged on a pipeline connected between the input end I (801) and the fourth output end (622) of the mixing tank, and a second regulating valve (280) is arranged on a pipeline connected between the input end II (802) and the ozone output end (222) of the mixing tank.
8. The ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen according to any one of claims 1 to 7, further comprising a liquid oxygen tank (100), wherein a liquid oxygen output end (101) is arranged on the liquid oxygen tank (100); the liquid oxygen output (101) is connected to the first input (211).
9. An ozone separation method for generating high-concentration ozone mixed gas by utilizing liquid oxygen, which is characterized in that the ozone separation system for generating high-concentration ozone mixed gas by utilizing liquid oxygen is based on any one of claims 1 to 8; liquid oxygen is treated by the ozone separation system to generate mixed gas containing ozone and oxygen; the method for separating ozone by utilizing liquid oxygen to generate high-concentration ozone mixed gas comprises the following specific operation steps:
(1) Liquid oxygen is input into the first heat exchange tube (210) through the first input end (211) to exchange heat with the third heat exchange tube (220) to generate oxygen;
(2) Heating the oxygen generated in the step (1) to the temperature of-10 ℃ to 20 ℃, and then introducing an ozone generator (500) to generate a mixed gas A of ozone and oxygen;
(3) Introducing the mixed gas A into the second heat exchange tube (610) to exchange heat with the fourth heat exchange tube (620), and then introducing the mixed gas A into the third heat exchange tube (220) to exchange heat with the first heat exchange tube (210) to generate oxygen and liquid ozone N;
(4) Introducing the oxygen generated in the step (3) into a fourth heat exchange tube (620) to exchange heat with the second heat exchange tube (610), and outputting to obtain oxygen M;
(5) The mixed gas B of ozone and oxygen is obtained by mixing the oxygen M with the liquid ozone N and outputting the mixed gas through the gas outlet (803).
10. The method for separating ozone from liquid oxygen to generate high-concentration ozone mixed gas according to claim 9, wherein a fourth output end (622) of the fourth heat exchange tube (620) is connected with a generator input end (501) of the ozone generator (500) through a pipeline, an exhaust ozone destructor (700) is arranged on the pipeline, and oxygen M output by the fourth output end (622) is processed by the exhaust ozone destructor (700) and then is input into the ozone generator (500).
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