CN109336057B - Chemical oxygen candle oxygen generator and manufacturing method and oxygen generating method thereof - Google Patents
Chemical oxygen candle oxygen generator and manufacturing method and oxygen generating method thereof Download PDFInfo
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- CN109336057B CN109336057B CN201811472700.5A CN201811472700A CN109336057B CN 109336057 B CN109336057 B CN 109336057B CN 201811472700 A CN201811472700 A CN 201811472700A CN 109336057 B CN109336057 B CN 109336057B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000001301 oxygen Substances 0.000 title claims abstract description 112
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 112
- 239000000126 substance Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 124
- 239000000460 chlorine Substances 0.000 claims abstract description 124
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 124
- 238000009413 insulation Methods 0.000 claims abstract description 34
- 150000002926 oxygen Chemical class 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims abstract description 18
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003999 initiator Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 96
- 239000003112 inhibitor Substances 0.000 claims description 88
- 239000004965 Silica aerogel Substances 0.000 claims description 46
- 239000004744 fabric Substances 0.000 claims description 32
- 239000003365 glass fiber Substances 0.000 claims description 31
- 239000004964 aerogel Substances 0.000 claims description 25
- 239000000377 silicon dioxide Substances 0.000 claims description 25
- 235000012239 silicon dioxide Nutrition 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 21
- 238000011049 filling Methods 0.000 claims description 19
- XXQBEVHPUKOQEO-UHFFFAOYSA-N potassium superoxide Chemical compound [K+].[K+].[O-][O-] XXQBEVHPUKOQEO-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 10
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- HPGPEWYJWRWDTP-UHFFFAOYSA-N lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 claims description 5
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003125 aqueous solvent Substances 0.000 claims description 2
- 238000006298 dechlorination reaction Methods 0.000 claims description 2
- 239000011152 fibreglass Substances 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 11
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 description 13
- 238000011056 performance test Methods 0.000 description 11
- 239000000843 powder Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 6
- 150000004972 metal peroxides Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002978 peroxides Chemical group 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- 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
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
- C01B13/0218—Chlorate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a chemical oxygen candle oxygen generator, a manufacturing method thereof and an oxygen generating method, which comprises a pressed sodium chlorate-containing oxygen salt column body and a shell wrapping the outside of the oxygen salt column body, wherein a heat insulation filter layer for heat insulation and chlorine removal is arranged between the outer surface of the oxygen salt column body and the shell; one end of the shell is provided with an initiator, and the other end of the shell is provided with a gas outlet. The chemical oxygen candle oxygen generator fully isolates the overflow of heat generated during the combustion of the oxygen candle, ensures the continuous and full combustion of the oxygen candle, filters harmful chlorine more efficiently, improves the purity of oxygen, and simultaneously improves the preparation efficiency of the oxygen candle.
Description
Technical Field
The invention relates to the technical field of solid oxygen source generators, in particular to a chemical oxygen candle oxygen generator, a manufacturing method thereof and an oxygen generating method using the chemical oxygen candle oxygen generator.
Background
The common solid oxygen source generator is a chemical oxygen candle oxygen generator, and the working principle is as follows: chlorate decomposes at high temperatures to produce oxygen. However, during the pyrolysis of sodium chlorate, small amounts of harmful gases such as chlorine, carbon monoxide, carbon dioxide, etc. are generated. Among these harmful gases, chlorine is the most harmful, and the trace amount of chlorine mixed in the produced oxygen can lead to the failure of the oxygen to be used as medical oxygen.
In order to eliminate chlorine, the traditional solid oxygen source generator needs to add a chlorine inhibitor into the grain of the generator, namely, in the process of preparing the grain, chlorate and the chlorine inhibitor are mixed and pressed into the grain; the chlorine inhibitor can be selected from metal peroxides such as lithium peroxide, sodium peroxide, potassium peroxide, barium peroxide, etc. to inhibit or eliminate chlorine. However, the use of chlorine inhibitors greatly reduces the activity of the catalyst, so that the chlorate decomposition can be carried out at a higher temperature, and the temperature rise can generate more chlorine, so that a heating device is additionally arranged to heat the grain, thereby leading to complex and malignant circulation of the device.
In addition, when the grain is pressed, the sodium chlorate is mostly pressed by adopting a wet method, namely, a small amount of water is added into the sodium chlorate, and as the chlorine inhibitor is peroxide with higher activity, the chlorine inhibitor contacts with the water added into the sodium chlorate when being mixed with the sodium chlorate, and then a severe chemical reaction occurs until the water is completely reacted by the chlorine inhibitor, and the residual chlorine inhibitor can play a role in chlorine removal. On one hand, the generator consumes a large amount of chlorine inhibitor in the process of manufacturing the grain, so that the service life of the generator is greatly shortened; on the other hand, the chlorine inhibitor reacts with water more violently, is very dangerous in the pressing process, and has potential safety hazard.
Disclosure of Invention
Aiming at the technical defects in the prior art, the invention provides a chemical oxygen candle oxygen generator capable of effectively inhibiting and eliminating harmful gases such as chlorine, carbon monoxide, carbon dioxide and the like, which comprises a pressed and formed oxygen salt column containing sodium chlorate and a shell wrapped outside the oxygen salt column, wherein a heat insulation filter layer for heat insulation and chlorine removal is arranged between the outer surface of the oxygen salt column and the shell; one end of the shell is provided with an initiator, and the other end of the shell is provided with a gas outlet; preferably the initiator is provided at the top of the housing and the gas outlet is provided at the bottom of the housing.
The heat insulation filter layer comprises N silicon dioxide aerogel felt layers and N glass fiber cloth layers; n is a positive integer, preferably 2-6.
The silica aerogel felt layers and the glass fiber cloth layers are alternately arranged at intervals.
Part or all of the silica aerogel felt layers are filled with chlorine inhibitors; at least the silica aerogel blanket closest to the oxy-salt column is filled with a chlorine inhibitor.
The chlorine inhibitor is one or more selected from metal peroxides such as lithium peroxide, sodium peroxide, potassium peroxide, barium peroxide and the like; and/or the filling amount of the metal peroxide is preferably 1 to 6wt% of the mass of the oxysalt column.
The particle diameter of the metal peroxide is preferably 2 μm to 20. Mu.m.
In a second aspect, the invention provides a method for manufacturing the chemical oxygen candle oxygen generator, which comprises the steps of filling a silicon dioxide aerogel felt layer with a chlorine inhibitor, wrapping a heat insulation filter layer, installing other parts and the like;
preferably, the treatment and filling chlorine inhibitor specifically comprises:
directly mixing the chlorine inhibitor after ball milling treatment with the silicon dioxide aerogel felt so as to fill the chlorine inhibitor into the pores of the silicon dioxide aerogel felt; or (b)
Dispersing the chlorine inhibitor after ball milling treatment in a solvent to form a chlorine inhibitor suspension, then using a silicon dioxide aerogel felt as a filter membrane, filtering the chlorine inhibitor suspension to fill the chlorine inhibitor into pores of the silicon dioxide aerogel felt, and drying the solvent in the silicon dioxide aerogel felt; the solvent is preferably volatile solvents such as ethanol, acetone, etc.;
the ball milling treatment preferably treats the chlorine inhibitor to a particle size of between 2 and 20 μm.
The wrapping heat insulation filter layer comprises the following components:
sequentially and alternately wrapping a silicon dioxide aerogel felt and a glass fiber cloth on the outer surface of the oxygen salt column, and forming a heat insulation filter layer by a plurality of silicon dioxide aerogel felt layers and glass fiber cloth layers which are alternately arranged at intervals;
preferably, the number of the silica aerogel felt layers and the glass fiber cloth layers is 2-6 respectively, and at least one silica aerogel felt layer is filled with the chlorine inhibitor.
The mounting of other components is specifically as follows:
and a shell is arranged outside the heat-insulating filter layer, an initiator is arranged on the shell at the top of the oxygen salt column, and a gas outlet is arranged at the bottom of the shell, so that the chemical oxygen candle oxygen generator is obtained.
In a third aspect, the present invention provides a method for producing oxygen by using a chemical oxygen candle, wherein the chemical oxygen candle oxygen producer is used to decompose an oxygen salt column at a high temperature to produce gas, and the gas is led to be dechlorinated by a heat insulation filter layer and then discharged through an air outlet to obtain pure oxygen. Because the chemical oxygen candle oxygen generator has only one outlet (namely an air outlet), the gas generated by decomposing the oxygen salt column body can be subjected to dechlorination through the heat insulation filter layer, and finally is guided by the air outlet to be discharged out of the oxygen generator, and pure oxygen can be obtained only by collecting the gas at the air outlet.
The chemical oxygen candle oxygen generator provided by the invention is characterized in that the heat insulation filter layer is arranged between the oxygen candle main body and the shell, the heat insulation filter layer has heat insulation and chlorine removal functions, and all the gas generated by the oxygen candle flows out after being filtered by the heat insulation filter layer, so that the overflow of the heat generated by burning the oxygen candle is fully isolated, the continuous and full decomposition of the oxygen candle can be ensured, harmful chlorine can be effectively filtered, the purity of the oxygen is improved, and the preparation efficiency of the oxygen candle is improved. The chemical oxygen candle oxygen generator can decompose sodium chlorate at about 250 ℃ without additional heating devices. In the manufacturing method provided by the invention, the active chlorine inhibitor is filled into the heat insulation layer to form the heat insulation filter layer, so that the chlorine inhibitor is prevented from being directly mixed with sodium chlorate and then contacting with water. In the preparation method of the method, the dry powder chlorine inhibitor is directly filled or the non-aqueous solvent is used for dispersing the chlorine inhibitor, so that the chlorine inhibitor is not additionally lost, and the preparation process is safer.
Drawings
FIG. 1 is a cross-sectional view of a chemical oxygen candle generator of the present invention;
fig. 2 is an enlarged view of the portion a in fig. 1.
Detailed Description
The invention provides a chemical oxygen candle oxygen generator, which comprises a pressed oxygen salt column 4 only containing sodium chlorate, wherein the outer surface of the oxygen salt column 4 is wrapped with a heat insulation filter layer 3, a shell 2 is arranged outside the heat insulation filter layer 3, an initiator 1 is arranged at the top of the shell 2, and a gas outlet 5 is arranged at the bottom of the shell 2. The heat insulation filter layer 3 has heat insulation and chlorine removal functions and is formed by alternately arranging a plurality of silica aerogel felt layers 6 and glass fiber cloth layers 7, namely the heat insulation filter layer 3 sequentially comprises the silica aerogel felt layers 6, the glass fiber cloth layers 7, … … and the glass fiber cloth layers 7 from inside to outside; the innermost layer, i.e. in contact with the body of oxysalt 4, is a silica aerogel blanket 6; the outermost layer, i.e. in contact with the outer shell 2, is a glass cloth layer 7. The number of layers of silica aerogel blanket 6 and fiberglass cloth 7 is determined by the inside diameter of the tank, and is generally no less than 2 and no more than 6. The silicon dioxide aerogel felt layer 6 is provided with tiny pores (the pore diameter is 20nm-2 mu m), the pores are filled with chlorine inhibitor, the chlorine inhibitor can be selected from metal peroxides such as lithium peroxide, sodium peroxide, potassium peroxide, barium peroxide and the like, the particle size is 2-20 mu m, and the filling amount of the chlorine inhibitor in the silicon dioxide aerogel felt layer 6 is 1-6wt% of the weight of the oxygen salt column 4.
The silica aerogel felt is purchased from Shenzhen Xinyuan heat preservation material factory with the brand number of QN-07; glass fiber cloth was purchased from glass fiber products limited, inc. in Tazhou, trade name: YZ-BWT100.
The invention also provides a manufacturing method of the chemical oxygen candle oxygen generator, which comprises the following steps:
(1) Ball milling the powdery chlorine inhibitor to enable the particle size of the chlorine inhibitor powder to be between 2 and 20 mu m, and filling the chlorine inhibitor into the silicon dioxide aerogel felt by using a dry method or a wet method; wherein,
the dry method is as follows: uniformly spreading chlorine inhibitor powder on the silicon dioxide aerogel felt to enable the chlorine inhibitor to be filled into pores of the silicon dioxide aerogel felt, wherein the filling amount of the chlorine inhibitor is 1-6wt% of the weight of the oxygen salt column body; the chlorine inhibitor can be one or more selected from metal peroxides such as barium peroxide, lithium peroxide, sodium peroxide, potassium peroxide, etc.
The wet method is as follows: dissolving chlorine inhibitor powder after ball milling treatment in a solvent to obtain chlorine inhibitor suspension, taking a silicon dioxide aerogel felt as a filtering layer, filtering the chlorine inhibitor solution to enable the chlorine inhibitor to be filled in pores of the silicon dioxide aerogel felt, and finally drying the solvent to obtain the silicon dioxide aerogel felt filled with the chlorine inhibitor; the solvent can be selected from volatile solvents such as absolute ethanol, acetone, etc.
According to the components of the oxygen salt column, the chlorine inhibitor is preferentially filled in the innermost layer, namely the silicon dioxide aerogel felt layer close to the oxygen candle main body. Some oxygen salt columns do not require too much chlorine inhibitor, so the second and third layers of silica aerogel blanket do not need to be refilled with chlorine inhibitor.
(2) Wrapping the silica aerogel felt filled with the chlorine inhibitor in the step (1) on the outer surface of the oxygen salt column 4 to form a silica aerogel felt layer 6, wrapping a layer of glass fiber cloth on the outer surface to form a glass fiber cloth layer 7, and sequentially wrapping the silica aerogel felt and the glass fiber cloth to form a heat insulation filter layer 3 in which the silica aerogel felt layer 6 and the glass fiber cloth layer 7 are alternately arranged at intervals; the number of layers of the silica aerogel blanket layer 6 is 2 to 6, and the glass fiber cloth layer 7 is used for fixing the silica aerogel blanket, so that the number of layers of the silica aerogel blanket layer 6 is the same. The number of layers of the heat insulation filter layer 3 is determined by the diameter of the oxygen salt column and the diameter of the tank body, so that the oxygen salt column can be tightly wrapped and arranged in the tank body by the heat insulation filter layer 3.
(3) And (3) plugging the oxygen salt column 4 wrapped with the heat insulation filter layer 3 in the step (2) into the metal shell 2, installing the gas outlet 5 at the bottom, installing the initiator 1, and sealing by using a sealing machine to obtain the chemical oxygen candle oxygen generator.
The present invention will be described more specifically with reference to the following examples, which are not intended to limit the present invention in any way.
Example 1:
in the chemical oxygen candle oxygen generator provided in this embodiment, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, the chlorine inhibitor is selected from barium peroxide, the average particle size is 10 μm, the filling amount is 2wt%, the chlorine inhibitor is filled in the silica aerogel felt layer 6 which is only nearest to the oxygen candle main body 4 by a dry method, and the other silica aerogel felt layers 6 have no chlorine inhibitor.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 2:
in the chemical oxygen candle oxygen generator provided in this embodiment, 3 layers of silica aerogel felt layers 6 are provided, 3 layers of glass fiber cloth layers 7 are provided, the chlorine inhibitor is selected from barium peroxide, the average particle size is 10 μm, the filling amount is 2wt%, the chlorine inhibitor is filled in the two layers of silica aerogel felt layers 6 which are only nearest to the oxygen candle main body 4 by a dry method, and the chlorine inhibitor is not contained in the other silica aerogel felt layers 6.
The performance test data are as follows:
shell temperature: 55 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 3:
in the chemical oxygen candle oxygen generator provided in this embodiment, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, the chlorine inhibitor is selected from barium peroxide, the average particle size is 10 μm, the filling amount is 4wt%, the chlorine inhibitor is filled in the three layers of silica aerogel felt layers 6 which are nearest to the oxygen candle main body 4 only by a dry method, and the other silica aerogel felt layers 6 have no chlorine inhibitor.
The performance test data are as follows:
shell temperature: 55 ℃, chlorine concentration: less than or equal to 0.1ppm, meets the requirement of the standard of the solid chemical oxygen generator for life saving of flying personnel of GJB 7019-2010 on the concentration of chlorine.
Example 4:
in the chemical oxygen candle oxygen generator provided in this embodiment, 3 layers of silica aerogel felt layers 6 are provided, 3 layers of glass fiber cloth layers 7 are provided, the chlorine inhibitor is selected from barium peroxide, the average particle size is 10 μm, the filling amount is 2wt%, the chlorine inhibitor is filled in the two layers of silica aerogel felt layers 6 closest to the oxygen candle main body 4 by a wet method, and the chlorine inhibitor is not contained in the other silica aerogel felt layers 6.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 5:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, compared with example 2, except that the process parameters are basically the same, the particle size of the chlorine inhibitor powder is changed, the average particle size of the chlorine inhibitor is 20 μm, and the filling amount is 2wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 6:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, but the process parameters are basically the same as those in example 2, the particle size of the chlorine inhibitor powder is changed, the particle size of the chlorine inhibitor is 2 μm on average, and the filling amount is 2wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 7:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, but the process parameters are basically the same as those in example 2, the particle size of the chlorine inhibitor powder is changed, the particle size of the chlorine inhibitor is 5 μm on average, and the filling amount is 2wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 8:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, but the process parameters are basically the same as those in example 2, the particle size of the chlorine inhibitor powder is changed, the particle size of the chlorine inhibitor is 15 μm on average, and the filling amount is 2wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 9:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, but the process parameters are basically the same as those in example 2, the particle size of the chlorine inhibitor powder is changed, the particle size of the chlorine inhibitor is 20 μm on average, and the filling amount is 6wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Example 10:
in the chemical oxygen candle oxygen generator provided in this example, the silica aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the preparation process in this example is basically the same as that in example 2, but the process parameters are basically the same as those in example 2, the particle size of the chlorine inhibitor powder is changed, the particle size of the chlorine inhibitor is 20 μm on average, and the filling amount is 1wt%.
The performance test data are as follows:
shell temperature: 60 ℃, chlorine concentration: <0.1ppm, meets the requirement of the standard of the life-saving solid chemical oxygen generator of the flight personnel of GJB 7019-2010 on the concentration of chlorine.
Comparative example 1:
the existing chemical oxygen candle oxygen generator (see Wang Yajuan, jiang Shinan, ma Lie, etc. the design of oxygen candle heat insulation structure [ J ]. Ship science and technology, 2010,32 (12): disclosed in 95-98) can react at more than 400 ℃, an additional heating device is additionally required, and the temperature of the outer wall reaches up to 250 ℃ when the oxygen candle is decomposed.
Comparative example 2:
in the chemical oxygen candle oxygen generator provided by the embodiment, the silicon dioxide aerogel felt layer 6 is provided with 3 layers, the glass fiber cloth layer 7 is provided with 3 layers, and the silicon dioxide aerogel felt layer 6 is free of chlorine inhibitors.
The performance test data are as follows:
shell temperature: 80 ℃, chlorine concentration: >1000ppm.
Comparative example 3:
in the chemical oxygen candle oxygen generator provided in this embodiment, the silica aerogel felt layer 6 is provided with 3 layers, and the glass fiber cloth layer 7 is not provided, and the preparation process in this embodiment refers to embodiment 2. The obtained chemical oxygen candle oxygen generator can generate chlorine inhibitor migration and uneven dispersion when being stored at ordinary times, the chlorine inhibitor can not play a role when being used, and the heat insulation effect of the heat insulation layer is also greatly reduced.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended by the present invention.
Claims (9)
1. A method for manufacturing a chemical oxygen candle oxygen generator is characterized in that,
the chemical oxygen candle oxygen generator comprises a compression-molded oxygen salt cylinder containing sodium chlorate and a shell wrapped outside the oxygen salt cylinder, wherein a heat insulation filter layer for heat insulation and chlorine removal is wrapped between the outer surface of the oxygen salt cylinder and the shell, the heat insulation filter layer comprises N layers of silica aerogel felt layers and N layers of glass fiber cloth layers, N is a positive integer, part or all of the silica aerogel felt layers are filled with chlorine inhibitors, and at least the silica aerogel felt layer closest to the oxygen salt cylinder is filled with the chlorine inhibitors; one end of the shell is provided with an initiator, and the other end of the shell is provided with a gas outlet;
the manufacturing method comprises the steps of filling a chlorine inhibitor into a silicon dioxide aerogel felt layer, wrapping a heat insulation filter layer and installing other parts; wherein, the filling chlorine inhibitor specifically comprises:
directly mixing the chlorine inhibitor after ball milling treatment with the silicon dioxide aerogel felt so as to fill the chlorine inhibitor into the pores of the silicon dioxide aerogel felt; or (b)
Dispersing the chlorine inhibitor after ball milling treatment in a non-aqueous solvent to form a chlorine inhibitor suspension, then using a silica aerogel felt as a filter membrane, filtering the chlorine inhibitor suspension to fill the chlorine inhibitor into pores of the silica aerogel felt, and drying the solvent in the silica aerogel felt;
the chlorine inhibitor is one or more selected from lithium peroxide, sodium peroxide, potassium peroxide and barium peroxide; the filling quantity of the chlorine inhibitor is 1 wt-6 wt% of the mass of the oxysalt column.
2. The method of claim 1, wherein the initiator is disposed at the top of the housing and the gas outlet is disposed at the bottom of the housing.
3. The method of claim 1, wherein N is 2-6.
4. The method of claim 1, wherein the silica aerogel blanket and fiberglass blanket are alternately spaced apart.
5. The method according to any one of claim 1 to 4, wherein,
the ball milling treatment is to treat the chlorine inhibitor to the particle size of 2-20 mu m.
6. The method according to claim 5, wherein the solvent is selected from ethanol and acetone.
7. The method according to claim 5, wherein the wrapping heat-insulating filter layer is specifically:
the outer surface of the oxygen salt column body is sequentially and alternately wrapped with a silicon dioxide aerogel felt and a glass fiber cloth, and a plurality of silicon dioxide aerogel felt layers and glass fiber cloth layers which are alternately arranged at intervals form a heat insulation filter layer.
8. The method according to claim 7, wherein the number of the silica aerogel blanket layers and the glass fiber cloth layers is 2 to 6, respectively, and the chlorine inhibitor is filled into at least one of the silica aerogel blanket layers.
9. The chemical oxygen candle oxygen generator is characterized in that the chemical oxygen candle oxygen generator manufactured by the manufacturing method of any one of claims 1-8 is used for decomposing an oxygen salt column body at high temperature to generate gas, and the gas is led to be subjected to dechlorination by a heat insulation filter layer and then discharged through an air outlet to obtain pure oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472700.5A CN109336057B (en) | 2018-12-04 | 2018-12-04 | Chemical oxygen candle oxygen generator and manufacturing method and oxygen generating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811472700.5A CN109336057B (en) | 2018-12-04 | 2018-12-04 | Chemical oxygen candle oxygen generator and manufacturing method and oxygen generating method thereof |
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| CN103362544A (en) * | 2013-07-15 | 2013-10-23 | 北京科技大学 | Oxygen candle oxygen supply system in emergency disaster prevention space |
| CN209583631U (en) * | 2018-12-04 | 2019-11-05 | 军事科学院系统工程研究院卫勤保障技术研究所 | A kind of chemical oxygen candle oxygen producer |
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| CN209583631U (en) * | 2018-12-04 | 2019-11-05 | 军事科学院系统工程研究院卫勤保障技术研究所 | A kind of chemical oxygen candle oxygen producer |
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