CN115092893A - High-purity oxygen preparation device - Google Patents

High-purity oxygen preparation device Download PDF

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Publication number
CN115092893A
CN115092893A CN202210789309.8A CN202210789309A CN115092893A CN 115092893 A CN115092893 A CN 115092893A CN 202210789309 A CN202210789309 A CN 202210789309A CN 115092893 A CN115092893 A CN 115092893A
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branch pipeline
oxygen
valve
branch
gas
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彭孔阳
李海兰
王朝晖
任昊利
赵海燕
苑改红
虞明根
王治亚
杨金星
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Pla Strategic Support Force Aerospace Engineering University Sergeant School
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02Preparation of oxygen
    • C01B13/0229Purification or separation processes

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Abstract

The invention relates to the technical field of oxygen preparation, and discloses a high-purity oxygen preparation device, which comprises: a first storage device for storing liquid oxygen; the vaporizing device is communicated with the first storage device and is used for vaporizing the liquid oxygen into oxygen; the purification device is communicated with the vaporization device and is used for purifying oxygen; and the second storage device is communicated with the purifying device and is used for storing the purified oxygen. The high-purity oxygen preparation device is suitable for an aerospace launching field, and can prepare high-purity oxygen by using liquid oxygen stored in the aerospace launching field.

Description

High-purity oxygen preparation device
Technical Field
The invention relates to the technical field of oxygen preparation, in particular to a high-purity oxygen preparation device.
Background
The high-purity oxygen refers to oxygen with the purity of more than or equal to 99.999%, and the high-purity oxygen and the high-purity nitrogen in the space launching field are prepared and mixed according to different proportions according to the gas use requirement to obtain the life support gas for astronauts. A large amount of high-purity oxygen is needed in the space launching field, but a high-purity oxygen preparation device capable of preparing the high-purity oxygen is absent in the space launching field at present.
Therefore, how to provide a high-purity oxygen preparation device suitable for an aerospace launching field becomes a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a high-purity oxygen preparation device suitable for an aerospace launching field.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a high-purity oxygen preparation device, which comprises: a first storage device for storing liquid oxygen; vaporization means in communication with said first reservoir means for vaporizing said liquid oxygen into oxygen; a purification device in communication with the vaporization device, the purification device for purifying the oxygen; a second storage device in communication with the purification device, the second storage device for storing the purified oxygen.
Preferably, the purification device comprises a catalytic oxidation reactor, a cooler, a drying adsorption tower, a precision filter and an online detection device which are sequentially communicated, wherein the catalytic oxidation reactor is communicated with the vaporizing device.
Preferably, the purification device further comprises a heat exchanger, a refrigerant inlet of the heat exchanger is communicated with the gas outlet end of the vaporization device, a refrigerant outlet of the heat exchanger is communicated with the gas inlet end of the catalytic oxidation reactor, a heat medium inlet of the heat exchanger is communicated with the gas outlet end of the catalytic oxidation reactor, and a heat medium outlet of the heat exchanger is communicated with the gas inlet end of the cooler.
Preferably, the gas outlet end of the precision filter is communicated with the regeneration gas inlet of the drying adsorption tower.
Preferably, the number of the drying adsorption towers is two, the air outlet end of the cooler is respectively connected with the two air inlet ends of the drying adsorption towers through a first branch pipeline and a second branch pipeline, the first branch pipeline and the second branch pipeline are respectively provided with a first branch valve and a second branch valve, the air inlet end of the precision filter is respectively connected with the two air outlet ends of the drying adsorption towers through a third branch pipeline and a fourth branch pipeline, the third branch pipeline and the fourth branch pipeline are respectively provided with a third branch valve and a fourth branch valve, the air outlet end of the precision filter is respectively communicated with the two regeneration gas inlets of the drying adsorption towers through a fifth branch pipeline and a sixth branch pipeline, the fifth branch pipeline and the sixth branch pipeline are respectively provided with a fifth branch valve and a sixth branch valve, and the exhaust gas evacuation device is respectively communicated with the two exhaust gas outlets of the drying adsorption towers through a seventh branch pipeline and an eighth branch pipeline And a seventh branch valve and an eighth branch valve are arranged on the seventh branch pipeline and the third branch pipeline.
Preferably, the purification device further comprises a cooling water circulation water supply device, the cooler is a water-cooling cooler, and a water inlet and a water outlet of the water-cooling cooler are respectively communicated with a water inlet and a water outlet of the cooling water circulation water supply device.
Preferably, the catalyst of the catalytic oxidation reactor is a molecular sieve.
Preferably, the high-purity oxygen production device further comprises a pressurization device and a gas bus bar, and the purification device, the pressurization device, the gas bus bar and the second storage device are communicated in sequence.
Preferably, the high-purity oxygen preparation device further comprises a pressure regulating device, and the vaporizing device is communicated with the purifying device through the pressure regulating device.
Compared with the prior art, the invention has the following technical effects:
the high-purity oxygen preparation device provided by the invention comprises: a first storage device for storing liquid oxygen; the vaporizing device is communicated with the first storage device and is used for vaporizing the liquid oxygen into oxygen; the purification device is communicated with the vaporization device and is used for purifying oxygen; and the second storage device is communicated with the purifying device and is used for storing the purified oxygen.
In the field of aerospace, liquid oxygen is an important oxidant, and is usually matched with liquid hydrogen or kerosene and the like to be used as a propellant of rockets and missiles, a space launch site generally stores a large amount of liquid oxygen, and is provided with a storage device for storing the liquid oxygen and a vaporization device for vaporizing the liquid oxygen.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a high purity oxygen producing apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a purification apparatus of a high purity oxygen production apparatus provided in an embodiment of the present invention.
Description of reference numerals: 100. a high purity oxygen preparation device; 1. a first storage device; 2. a vaporization device; 3. a purification device; 301. a catalytic oxidation reactor; 302. a cooler; 303. drying the adsorption tower; 304. a precision filter; 305. an online detection device; 306. a heat exchanger; 307. a first branch valve; 308. a second branch valve; 309. a third valve; 310. a fourth valve; 311. a fifth valve; 312. a sixth valve; 313. a seventh valve; 314. an eighth valve; 315. a first main valve; 316. a second main valve; 317. a third main valve; 318. a fourth main valve; 319. a fifth main valve; 320. a sixth main valve; 321. an exhaust gas evacuation device; 322. a sampling valve; 4. a second storage device; 5. a cooling water circulation water supply device; 6. a pressure boosting device; 7. a gas bus.
Detailed Description
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, and not all of the embodiments. 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.
The invention aims to provide a high-purity oxygen preparation device suitable for an aerospace launching site.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 2, the present embodiment provides a high purity oxygen producing apparatus 100 including: a first storage device 1, the first storage device 1 being for storing liquid oxygen; the vaporizing device 2 is communicated with the first storage device 1, and the vaporizing device 2 is used for vaporizing the liquid oxygen into oxygen; the purification device 3 is communicated with the vaporization device 2, and the purification device 3 is used for purifying oxygen; and a second storage device 4, wherein the second storage device 4 is communicated with the purifying device 3, and the second storage device 4 is used for storing the purified oxygen.
The high-purity oxygen preparation device 100 provided by the embodiment has the advantages of reasonable resource utilization, cost saving and simple and feasible process flow, and can prepare high-purity oxygen meeting the technical index requirements by introducing the purification device 3 by utilizing the existing liquid oxygen propellant fuel, the pressurization device 6, the liquid oxygen and oxygen storage device, the gas busbar 7 and other devices of the space launching field, thereby meeting the requirement of the space launching field for high-purity oxygen gas.
In the present embodiment, as shown in fig. 2, the purification apparatus 3 includes a catalytic oxidation reactor 301, a cooler 302, a drying adsorption tower 303, a precision filter 304 and an on-line detection apparatus 305, which are sequentially connected, wherein the catalytic oxidation reactor 301 is connected to the vaporization apparatus 2. Specifically, the catalyst of the catalytic oxidation reactor 301 provided in this embodiment is a molecular sieve, and the catalytic oxidation reaction occurs in the catalytic oxidation reactor 301 to remove H in the oxygen gas generated by vaporization of the liquid oxygen 2 、CO、CH 4 H formation from impurities such as Total Hydrocarbons (THC) 2 O and CO 2 The reaction formula is as follows:
Figure BDA0003729602890000041
Figure BDA0003729602890000042
Figure BDA0003729602890000043
Figure BDA0003729602890000044
in the present embodiment, the first storage device 1 and the second storage device 4 are both steel cylinders, but are not limited to steel cylinders, and are only exemplified here. The specific structures of the vaporizing device 2, the dry adsorption tower 303, the precision filter 304, the cooler 302 and the on-line detection device 305 are all in the prior art, and are not described herein again.
In this embodiment, as shown in fig. 2, the purifying device 3 further includes a heat exchanger 306, a cooling medium inlet of the heat exchanger 306 is communicated with the gas outlet end of the vaporizing device 2, a cooling medium outlet of the heat exchanger 306 is communicated with the gas inlet end of the catalytic oxidation reactor 301, a heating medium inlet of the heat exchanger 306 is communicated with the gas outlet end of the catalytic oxidation reactor 301, and a heating medium outlet of the heat exchanger 306 is communicated with the gas inlet end of the cooler 302. In the specific use process, the temperature of the oxygen after the catalytic oxidation reaction is higher, the oxygen before the catalytic oxidation can be heated up by carrying out heat exchange on the oxygen after the catalytic oxidation and the oxygen before the catalytic oxidation, and meanwhile, the temperature of the oxygen after the catalytic oxidation can be reduced.
In the present embodiment, as shown in fig. 2, the outlet end of the ultrafilter 304 is connected to the regeneration gas inlet of the dry adsorption tower 303. In this manner, the purified high-purity oxygen can be utilized as the regeneration gas of the dry adsorption tower 303.
In this embodiment, as shown in fig. 2, the number of the drying adsorption towers 303 is two, the two drying adsorption towers 303 are arranged in parallel, the air outlet end of the cooler 302 is connected to the air inlet ends of the two drying adsorption towers 303 through a first branch pipeline and a second branch pipeline, the first branch pipeline and the second branch pipeline are respectively provided with a first branch valve 307 and a second branch valve 308, the air inlet end of the precision filter 304 is connected to the air outlet ends of the two drying adsorption towers 303 through a third branch pipeline and a fourth branch pipeline, the third branch pipeline and the fourth branch pipeline are respectively provided with a third branch valve 309 and a fourth branch valve 310, the air outlet end of the precision filter 304 is respectively communicated to the regeneration air inlets of the two drying adsorption towers 303 through a fifth branch pipeline and a sixth branch pipeline, and the fifth branch pipeline and the sixth branch pipeline are respectively provided with a fifth branch valve 311 and a sixth branch valve 312, the exhaust gas emptying device 321 is respectively communicated with the exhaust gas outlets of the two drying and adsorption towers 303 through a seventh branch pipeline and an eighth branch pipeline, and a seventh valve 313 and an eighth valve 314 are arranged on the seventh branch pipeline and the third branch pipeline. The valves are used for controlling the opening or closing of the corresponding branch pipelines, and in a specific use process, the two drying and adsorption towers 303 can work alternately by controlling the opening and closing of the corresponding valves.
Further, as shown in fig. 2, the vaporizing device 2 is connected to the refrigerant inlet of the heat exchanger 306 through a first main pipeline, a first main valve 315 is disposed on the first main pipeline, the first branch pipeline and the second branch pipeline are both connected to the air outlet of the cooler 302 through a second main pipeline, a second main valve 316 is disposed on the second main pipeline, a fifth branch pipeline and a sixth branch pipeline are both connected to the air outlet of the fine filter 304 through a third main pipeline, a third main valve 317 is disposed on the third main pipeline, the air outlet of the fine filter 304 is connected to the on-line main pipeline 305 through a fourth main pipeline, a fourth main valve 318 is disposed on the fourth main pipeline, the air outlet of the fine filter 304 is connected to the second storage device 4 through a fifth main pipeline, a fifth main valve 319 is disposed on the fifth main pipeline, the air outlet of the fine filter 304 is connected to a sampling valve 322 through a sixth main pipeline, the sample obtained from the sampling valve 322 can be detected by a detection device other than the line detection device 305, and a sixth main valve 320 is provided on the sixth main pipe.
Further, the first branch valve 307, the second branch valve 308, the third branch valve 309, the fourth branch valve 310, the fifth branch valve 311, the sixth branch valve 312, the seventh branch valve 313, the eighth branch valve 314, the first main valve 315, and the fourth main valve 318 are all solenoid valves, and the second main valve 316, the third main valve 317, the fourth main valve 318, and the sixth main valve 320 are all stop valves.
In this embodiment, the exhaust gas emptying device 321 is an emptying pipe, and a first end of the emptying pipe is respectively communicated with the exhaust gas outlets of the two drying and adsorbing towers 303 through a seventh branch pipe and an eighth branch pipe, and a second end of the emptying pipe bends downward and is communicated with the outside atmosphere.
It should be noted that the number of the drying towers is not limited to two, and may be any number, and preferably, the number of the drying towers is at least two, and all the drying towers are arranged in parallel.
In this embodiment, as shown in fig. 2, the purifying device 3 further includes a cooling water circulation water supply device 5, the cooler 302 is a water-cooled cooler 302, and a water inlet and a water outlet of the water-cooled cooler 302 are respectively communicated with a water inlet and a water outlet of the cooling water circulation water supply device 5. The cooling water circulation water supply device 5 is used for circularly introducing constant-temperature cooling water into the water-cooled cooler 302, and performing heat exchange between the constant-temperature cooling water and the oxygen treated by the catalytic oxidation reactor 301 to further reduce the temperature of the oxygen. The specific structure of the cooling water circulation water supply device 5 belongs to the prior art, and is not described in detail herein.
In this embodiment, as shown in fig. 1, the high purity oxygen production apparatus 100 further includes a pressurizing device 6 and a gas bus bar 7, and the purification device 3, the pressurizing device 6, the gas bus bar 7 and the second storage device 4 are connected in series. In the present embodiment, the pressure increasing device 6 is specifically a diaphragm compressor, but is not limited to the diaphragm compressor, and is only exemplified here.
In this embodiment, the high purity oxygen producing apparatus 100 further includes a pressure regulating device, and the vaporizing device 2 is communicated with the purifying device 3 through the pressure regulating device. In a specific use process, in order to fully react, the pressure regulating device is utilized to reduce the air inlet pressure of the purifying device 3. The specific structure of the pressure regulating device belongs to the prior art, and is not described herein again.
It should be noted that the high-purity oxygen preparation device 100 of the present invention is not only suitable for aerospace launching sites, but also suitable for other occasions, and when the device 100 is applied to aerospace related fields, the device can prepare high-purity oxygen by using liquid oxygen (low-temperature propellant) to serve as gas utilization guarantee in the aspects of astronauts' life support systems, etc.
The method for preparing high purity oxygen by using the high purity oxygen preparation apparatus 100 provided in this embodiment comprises the following steps:
the liquid oxygen stored in the first storage device 1 is vaporized into oxygen through a vaporization device 2;
the method comprises the steps that oxygen is decompressed to 0.4-1.0 MPa by a pressure regulating device and enters a purifying device 3, the oxygen is preheated by a heat exchanger 306 to be heated to 280-350 ℃, part of heat used is from the oxygen after catalytic oxidation, the heated oxygen enters a catalytic oxidation reactor 301, the reaction temperature of the catalytic oxidation reactor 301 is 400-450 ℃, the pressure is less than or equal to 1.0MPa, the catalyst is a molecular sieve, and the catalytic oxidation reaction is carried out in the catalytic oxidation reactor 301 to remove H mixed in the oxygen 2 、CO、CH 4 H formation from impurities such as Total Hydrocarbons (THC) 2 O and CO 2
The oxygen after the preliminary impurity removal is discharged from the catalytic oxidation reactor 301, subjected to preliminary temperature reduction by a heat exchanger, and then enters a cooler 302 for further temperature reduction;
the oxygen after impurity removal and temperature reduction is deeply dehydrated and CO is treated by a drying adsorption tower 303 2 Further purifying, namely adsorbing by a drying adsorption tower 303 at normal temperature, desorbing by high temperature after adsorption saturation, setting the desorption temperature to be 250-300 ℃, adopting purified high-purity oxygen as regeneration gas of the drying adsorption tower 303, regenerating for 6-8 h, and then blowing for cooling for 0.8-1.2 h to complete the regeneration work of the drying adsorption tower 303;
finally, removing dust particles through a precision filter 304, wherein the filtering precision is 0.01 mu m;
the oxygen filtered by the precision filter 304 enters the on-line detection device 305 for detection, when the high purity oxygen is reached, the gas is pressed into the second storage device 4 through the supercharging device 6, the air inlet pressure of the supercharging device 6 is 0.4-0.8 MPa, the high purity oxygen pressure after supercharging is 15MPa, and when the high purity oxygen is not reached, the oxygen treated by the purification device 3 enters the purification device 3 again for purification treatment until the high purity oxygen is reached.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (9)

1. A high purity oxygen producing apparatus, comprising:
a first storage device for storing liquid oxygen;
a vaporization device in communication with the first reservoir device, the vaporization device for vaporizing the liquid oxygen into oxygen;
a purification device in communication with the vaporization device, the purification device for purifying the oxygen;
a second storage device in communication with the purification device, the second storage device for storing the purified oxygen.
2. The apparatus for producing high purity oxygen according to claim 1, wherein the purification apparatus comprises a catalytic oxidation reactor, a cooler, a dry adsorption tower, a precision filter and an on-line detection apparatus, which are connected in series, wherein the catalytic oxidation reactor is connected to the vaporization apparatus.
3. The apparatus for producing high purity oxygen according to claim 2, wherein the purification apparatus further comprises a heat exchanger, wherein a refrigerant inlet of the heat exchanger is connected to the gas outlet of the vaporization apparatus, a refrigerant outlet of the heat exchanger is connected to the gas inlet of the catalytic oxidation reactor, a heat medium inlet of the heat exchanger is connected to the gas outlet of the catalytic oxidation reactor, and a heat medium outlet of the heat exchanger is connected to the gas inlet of the cooler.
4. The apparatus according to claim 2, wherein the outlet end of the fine filter is connected to the regeneration gas inlet of the dry adsorption tower.
5. The apparatus according to claim 4, wherein the number of the dry adsorption towers is two, the outlet end of the cooler is connected to the inlet ends of the two dry adsorption towers through a first branch pipeline and a second branch pipeline, the first branch pipeline and the second branch pipeline are respectively provided with a first valve and a second valve, the inlet end of the fine filter is connected to the outlet ends of the two dry adsorption towers through a third branch pipeline and a fourth branch pipeline, the third branch pipeline and the fourth branch pipeline are respectively provided with a third valve and a fourth valve, the outlet end of the fine filter is respectively communicated with the regeneration gas inlets of the two dry adsorption towers through a fifth branch pipeline and a sixth branch pipeline, and the fifth branch pipeline and the sixth branch pipeline are respectively provided with a fifth valve and a sixth valve, the waste gas emptying device is respectively communicated with the waste gas outlets of the two drying adsorption towers through a seventh branch pipeline and an eighth branch pipeline, and a seventh branch valve and an eighth branch valve are arranged on the seventh branch pipeline and the third branch pipeline.
6. The apparatus for producing high purity oxygen according to claim 2, wherein the purification apparatus further comprises a cooling water circulation water supply apparatus, the cooler is a water-cooled cooler, and a water inlet and a water outlet of the water-cooled cooler are respectively communicated with a water inlet and a water outlet of the cooling water circulation water supply apparatus.
7. The apparatus of claim 2, wherein the catalyst of the catalytic oxidation reactor is a molecular sieve.
8. The apparatus for producing high purity oxygen according to claim 1, further comprising a pressure increasing means and a gas bus, wherein the purifying means, the pressure increasing means, the gas bus and the second storage means are in communication in this order.
9. The apparatus according to claim 1, further comprising a pressure regulating device, wherein the vaporizing device is in communication with the purifying device via the pressure regulating device.
CN202210789309.8A 2022-07-05 2022-07-05 High-purity oxygen preparation device Pending CN115092893A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108408701A (en) * 2018-04-18 2018-08-17 衢州杭氧特种气体有限公司 A kind of krypton, the xenon technological process of production and its production line
CN210214801U (en) * 2019-03-18 2020-03-31 大连华邦化学有限公司 Oxygen purification device
CN111412695A (en) * 2020-03-25 2020-07-14 西安交通大学 Super supercooled liquid oxygen acquisition system based on liquid oxygen and liquid nitrogen mixing and vacuumizing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108408701A (en) * 2018-04-18 2018-08-17 衢州杭氧特种气体有限公司 A kind of krypton, the xenon technological process of production and its production line
CN210214801U (en) * 2019-03-18 2020-03-31 大连华邦化学有限公司 Oxygen purification device
CN111412695A (en) * 2020-03-25 2020-07-14 西安交通大学 Super supercooled liquid oxygen acquisition system based on liquid oxygen and liquid nitrogen mixing and vacuumizing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
格里兹曼耶科: "《航天工程概论》", 北京理工大学出版社, pages: 119 *

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