CN114906815B - Ultralow-temperature nano solid oxygen candle oxygen generator - Google Patents
Ultralow-temperature nano solid oxygen candle oxygen generator Download PDFInfo
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- CN114906815B CN114906815B CN202210612693.4A CN202210612693A CN114906815B CN 114906815 B CN114906815 B CN 114906815B CN 202210612693 A CN202210612693 A CN 202210612693A CN 114906815 B CN114906815 B CN 114906815B
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 214
- 239000001301 oxygen Substances 0.000 title claims abstract description 214
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 214
- 239000007787 solid Substances 0.000 title claims abstract description 80
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims abstract description 72
- 239000011943 nanocatalyst Substances 0.000 claims abstract description 26
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000460 chlorine Substances 0.000 claims abstract description 18
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000003112 inhibitor Substances 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(2+);cobalt(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 6
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 claims description 4
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 4
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 4
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 3
- HPGPEWYJWRWDTP-UHFFFAOYSA-N lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 claims description 3
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 3
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 abstract description 5
- 230000020169 heat generation Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002360 explosive Substances 0.000 description 18
- 239000002994 raw material Substances 0.000 description 16
- 230000008014 freezing Effects 0.000 description 9
- 238000007710 freezing Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 238000002474 experimental method Methods 0.000 description 7
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000007580 dry-mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- HAIYHBSYMMFPJZ-UHFFFAOYSA-N O.Cl(=O)(=O)O.Cl(=O)(=O)O Chemical compound O.Cl(=O)(=O)O.Cl(=O)(=O)O HAIYHBSYMMFPJZ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- IUYLTEAJCNAMJK-UHFFFAOYSA-N cobalt(2+);oxygen(2-) Chemical compound [O-2].[Co+2] IUYLTEAJCNAMJK-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 230000002269 spontaneous effect 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/75—Cobalt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The invention relates to a solid chemical oxygen source, in particular to an ultralow-temperature nano solid oxygen candle oxygen generator. The solid oxygen candle oxygen generator comprises: chlorate and nanocatalyst; wherein the mass ratio of the nano catalyst to the chlorate is (1-3): (97-99). The solid oxygen candle oxygen generator provided by the invention adopts a fuel-free formula, can realize continuous combustion in an environment of minus 40 ℃ until oxygen release is finished, and has the advantages of high safety, strong reliability, low heat generation, stable oxygen release and no chlorine in released gas.
Description
Technical Field
The invention relates to a solid chemical oxygen source, in particular to an ultralow-temperature nano solid oxygen candle oxygen generator.
Background
Oxygen candles are a solid source of oxygen that is easy to store and convenient to use. It has high oxygen storage, similar to the density of liquid oxygen, about 3 times that of compressed oxygen with the same volume. The oxygen candle is stable, can not produce leakage phenomenon, and has the advantages of rapid oxygen production, large oxygen production amount, small equipment volume, light weight, long storage period and the like. The oxygen candle mainly comprises an ignition system, an oxygen generating system, a heat insulation system and a filtering system, wherein the ignition system triggers an oxygen generating explosive column in the oxygen generating system to work and enable the oxygen generating explosive column to burn layer by layer like a candle, and the oxygen generating explosive column principle is a spontaneous continuous oxygen supply product consisting of chlorate or perchlorate, a catalyst, fuel and the like. Most oxygen-generating explosive formulations are usually added with fuel to maintain continuous combustion of the oxygen-generating explosive, and wet pressing is usually adopted to press the explosive in the preparation process.
In CN107619021A, CN107867675a, fuel is added into oxygen-generating grain, and the addition of fuel generally results in increase of heat generation amount, which directly results in rise of temperature of wall surface of oxygen candle, and excessive heat in oxygen candle, which also results in generation of chlorate oxygen candle side reaction, and generates chlorine. At present, most oxygen candle products cannot realize continuous combustion of the grain at the low temperature of minus 40 ℃, which is a problem to be solved at present.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems.
The invention provides an ultralow-temperature nano solid oxygen candle oxygen generator, which adopts a fuel-free formula, can realize continuous combustion in an environment of-40 ℃ until oxygen release is finished, and has the advantages of high safety, strong reliability, low heat generation, stable oxygen release and no chlorine in released gas.
A solid oxygen candle oxygen generator comprising: chlorate and nanocatalyst; wherein the mass ratio of the nano catalyst to the chlorate is (1-3): (97-99).
According to the embodiment of the invention, the nano catalyst is selected from one or a combination of a plurality of nano cobaltosic oxide, nano ferroferric oxide and nano cobalt oxide.
According to the embodiment of the invention, the particle size of the nano catalyst is 10nm-50nm.
The inventor researches and discovers that under the condition of reaching the same oxygen release rate, the dosage of the used nano catalyst is obviously reduced compared with that of a common catalyst, so that the proportion of sodium chlorate can be obviously improved, and the oxygen release amount can be increased. In addition, the adoption of the nano catalyst can obviously improve the chlorate content in the solid oxygen candle oxygen generator. Under the condition of the solid oxygen candle oxygen generator (oxygen generating grain) with the same weight, the oxygen release amount is more, the generated heat is less, and the solid oxygen candle oxygen generator is safer.
According to the embodiment of the invention, in the solid oxygen candle oxygen generator, the mass ratio of the nano catalyst to chlorate is (1-2): (94-96).
According to the embodiment of the invention, the chlorate content is 90-99 wt% based on the total mass of the solid oxygen candle oxygen generator.
According to the embodiment of the invention, the chlorate content is 97-99 wt% based on the total mass of the solid oxygen candle oxygen generator.
According to an embodiment of the invention, the chlorate content is 94wt% to 96wt%, such as 94wt%, 95wt%, 96wt%, based on the total mass of the solid oxygen candle oxygen generator.
According to the embodiment of the invention, the content of the nano catalyst is 1-3 wt% based on the total mass of the solid oxygen candle oxygen generator.
According to an embodiment of the present invention, the nano-catalyst is contained in an amount of 1wt% to 2wt%, for example, 1wt%, 1.5wt%, 2wt%, based on the total mass of the solid oxygen candle oxygen generator.
According to the embodiment of the invention, the solid oxygen candle oxygen generator does not contain metal fuel.
According to the embodiment of the invention, the solid oxygen candle oxygen generator is composed of or prepared from chlorate and a nano catalyst (such as oxygen-generating explosive column).
In some embodiments of the invention, the solid oxygen candle oxygen generator is the same meaning as the oxygen generating cartridge.
According to the embodiment of the invention, the solid oxygen candle oxygen generator further comprises one or more of a chlorine inhibitor, a binder and a stabilizer.
According to an embodiment of the present invention, the chlorine inhibitor is contained in an amount of 0 to 5wt%, such as 0, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, based on the total mass of the solid oxygen candle oxygen generator.
According to an embodiment of the invention, the binder content is 0-5wt%, such as 0, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, based on the total mass of the solid oxygen candle oxygen generator.
According to an embodiment of the present invention, the stabilizer is contained in an amount of 0 to 5wt%, for example, 0, 1wt%, 2wt%, 3wt%, 4wt%, 5wt%, based on the total mass of the solid oxygen candle oxygen generator.
In some embodiments of the present invention, the solid oxygen candle oxygen generator comprises, in parts by mass: 90-100 parts of chlorate, 0.5-5 parts of nano catalyst, 0-5 parts of chlorine inhibitor, 0-5 parts of binder and 0-5 parts of stabilizer.
In some embodiments of the present invention, the solid oxygen candle oxygen generator comprises, in parts by mass: 94-96 parts of chlorate, 1-2 parts of nano catalyst, 1-2 parts of chlorine inhibitor, 1-2 parts of binder and 1-2 parts of stabilizer.
In some embodiments of the invention, the solid oxygen candle oxygen generator is formed or manufactured (e.g., oxygen generating cartridge) from chlorate, the nanocatalyst, the chlorine inhibitor, the binder and the stabilizer.
In some embodiments of the invention, the total amount of the solid oxygen candle oxygen generator is 100 parts.
According to the embodiment of the invention, the chlorate is one or a combination of a plurality of potassium chlorate and sodium chlorate.
According to the embodiment of the invention, the chlorine inhibitor is one or a combination of a plurality of barium peroxide, sodium peroxide and lithium peroxide.
According to the embodiment of the invention, the binder is one or a combination of a plurality of kaolin and diatomite.
According to the embodiment of the invention, the stabilizer is one or a combination of a plurality of potassium perchlorate and sodium perchlorate.
According to the embodiment of the invention, the chlorate has the particle size of 40-80 meshes. The research shows that the chlorate grain diameter is controlled to be 40-80 meshes, and the oxygen-generating grain can be prepared by adopting a dry pressing method, so that the process is simple and safe, and meanwhile, the complex wet pressing process can be avoided; if the wet pressure does not completely dry the grain, a certain amount of chlorine is also produced.
According to the embodiment of the invention, the particle size of the chlorine inhibitor is 120-200 meshes.
According to the embodiment of the invention, the particle size of the binder is 120-200 meshes.
According to the embodiment of the invention, the particle size of the stabilizer is 400-500 meshes.
The solid oxygen candle oxygen generator does not contain metal fuel, greatly reduces the heat generation capacity of the oxygen candle, and can completely burn the grain at the low temperature of minus 40 ℃. The nano catalyst can greatly reduce the decomposition temperature of the oxygen candle.
The invention also provides a preparation method of the solid oxygen candle oxygen generator (oxygen generating grain), which comprises the following steps: mixing the components uniformly; and (5) pressing and forming.
According to the embodiment of the invention, the pressure of the compression molding is 10T-15T/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the Or preferably pressed to a density of 2.0-2.3g/cm 3 Is provided.
In some embodiments, the method of preparing the solid oxygen candle oxygen generator (oxygen generating cartridge) comprises:
1) Putting the components into a mixer for dry mixing until the components are uniformly mixed;
2) Pouring the mixed raw materials into a custom mold;
3) At a rate of 10T-15T/cm on a tablet press 2 Is pressed into a density of 2.0-2.3g/cm 3 Is provided.
The invention also comprises the solid oxygen candle oxygen generator (oxygen-generating grain) prepared by the method.
The invention also comprises the application of the solid oxygen candle oxygen generator (oxygen-generating grain) in preparing an oxygen candle.
The solid oxygen candle of the invention (oxygen-generating explosive column) is packaged into a solid oxygen generator to prepare the oxygen candle.
An oxygen candle comprises the solid oxygen candle oxygen generator (oxygen generating grain). In some embodiments, the heat generating agent and/or the ignition charge is further included.
Experiments prove that the solid oxygen candle oxygen generator (oxygen-generating grain) can be frozen to more than 24-48 hours at the temperature of-40 ℃ and can still stably and completely release oxygen in the low-temperature environment.
The invention has at least one of the following technical effects:
1) The solid oxygen candle oxygen generator (oxygen-generating grain) has good chlorine removal effect and low cost.
2) The solid oxygen candle oxygen generator (oxygen-generating explosive column) can continuously burn the explosive column until the combustion is complete while metal fuel is not contained, and the safety and the reliability are improved.
3) The solid oxygen candle oxygen generator (oxygen production grain) can greatly reduce the decomposition temperature of chlorate by using the nano catalyst, and can adjust the oxygen discharging rate and the oxygen discharging stability of the oxygen candle by adjusting the content of each component formula.
4) The solid oxygen candle oxygen generator (oxygen-generating explosive column) can continuously supply oxygen in a low-temperature environment at the temperature of minus 40 ℃ until the explosive column is completely combusted.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention. The specific techniques or conditions are not identified in the examples and are described in the literature in this field or are carried out in accordance with the product specifications. The reagents or equipment used were conventional products available for purchase by regular vendors without the manufacturer's attention.
Example 1
The embodiment provides a solid oxygen candle oxygen generator (oxygen generating grain), and the mass of the oxygen generating grain is 100g. The raw materials are as follows:
| composition of the components | Quality of | Particle size |
| Sodium chlorate | 94g | 80 mesh |
| Nanometer cobaltosic oxide | 2g | 10nm |
| Barium peroxide | 1g | 200 mesh |
| Kaolin clay | 1g | 200 mesh |
| Potassium perchlorate | 2g | 500 mesh |
The preparation method comprises the following steps: weighing chlorate and other raw material components, and placing the chlorate and the other raw material components in a mixer for dry mixing until the chlorate and the other raw material components are uniformly mixed. Pouring the mixed raw materials into a custom mold. At 10T/cm on a tablet press 2 Is pressed into a density of 2.0g/cm 3 Is provided.
Packaging the oxygen-generating explosive column into a solid oxygen generator, freezing at-40 ℃ for 48 hours in an ultralow temperature freezing experiment box, and testing in the ultralow temperature freezing experiment box (-40 ℃).
Results of the solid oxygen candle oxygen generator (oxygen generating cartridge) test of this example: the oxygen candle releases oxygen steadily, the explosive column is completely burnt, the wall surface temperature of the oxygen generator is low, and the generated gas meets the requirements of medical and aviation breathing oxygen (GB 8982-2009).
Example 2
The embodiment provides a solid oxygen candle oxygen generator (oxygen generating grain), and the mass of the oxygen generating grain is 100g. The raw materials are as follows:
| composition of the components | Quality of | Particle size |
| Sodium chlorate | 90g | 40 mesh |
| Potassium chlorate | 4g | 40 mesh |
| Nanometer cobalt oxide | 2g | 20nm |
| Lithium peroxide | 1g | 120 mesh |
| Diatomite | 1g | 120 mesh |
| Sodium perchlorate | 2g | 400 mesh |
The preparation method comprises the following steps: weighing chlorate and other raw material components, and placing the chlorate and the other raw material components in a mixer for dry mixing until the chlorate and the other raw material components are uniformly mixed. Pouring the mixed raw materials into a custom mold. At 12T/cm on a tablet press 2 Is pressed into a density of 2.1g/cm 3 Is provided.
Packaging the oxygen-generating explosive column into a solid oxygen generator, freezing at-40 ℃ for 48 hours in an ultralow temperature freezing experiment box, and testing in the ultralow temperature freezing experiment box (-40 ℃).
Results of the solid oxygen candle oxygen generator (oxygen generating cartridge) test of this example: the oxygen candle releases oxygen steadily, the explosive column is completely burnt, the wall surface temperature of the oxygen generator is low, and the generated gas meets the requirements of medical and aviation breathing oxygen (GB 8982-2009).
Example 3
The embodiment provides a solid oxygen candle oxygen generator (oxygen generating grain), and the mass of the oxygen generating grain is 100g. The raw materials are as follows:
the preparation method comprises the following steps: weighing chlorate and other raw material components, and placing the chlorate and the other raw material components in a mixer for dry mixing until the chlorate and the other raw material components are uniformly mixed. Pouring the mixed raw materials into a custom mold. At 15T/cm on a tablet press 2 Is pressed into a density of 2.3g/cm 3 Is provided.
Packaging the oxygen-generating explosive column into a solid oxygen generator, freezing at-40 ℃ for 48 hours in an ultralow temperature freezing experiment box, and testing in the ultralow temperature freezing experiment box (-40 ℃).
Results of the solid oxygen candle oxygen generator (oxygen generating cartridge) test of this example: the oxygen candle releases oxygen steadily, the explosive column is completely burnt, the wall surface temperature of the oxygen generator is low, and the generated gas meets the requirements of medical and aviation breathing oxygen (GB 8982-2009).
Comparative example 1
The only difference from example 1 is that: the nano cobaltosic oxide is replaced by 400 mesh cobaltosic oxide.
Test results of the comparative solid oxygen candle oxygen generator (oxygen production grain): the grain cannot burn completely.
Comparative example 2
The only difference from example 1 is the following formulation: 88% of sodium chlorate, 1% of potassium perchlorate, 0.5% of cobaltous oxide (400 meshes), 1% of iron powder, 1% of silicon powder, 3% of barium peroxide, 3% of kaolin and 2.5% of iron scrap.
Test results of the comparative solid oxygen candle oxygen generator (oxygen production grain): the wall surface of the solid oxygen generator has too high temperature, and meanwhile, the fire transmission is unstable in the environment of minus 40 ℃.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (14)
1. A solid oxygen candle oxygen generator, comprising: chlorate and nanocatalyst; wherein the mass ratio of the nano catalyst to the chlorate is (1-3): (97-99); the nano catalyst is selected from one or a combination of a plurality of nano cobaltosic oxide, nano ferroferric oxide and nano cobalt oxide; the particle size of the nano catalyst is 10nm-50nm.
2. The solid oxygen candle oxygen generator according to claim 1, wherein the mass ratio of the nano catalyst to chlorate is (1-2): (94-96).
3. The solid oxygen candle oxygen generator of claim 1 or 2, wherein the chlorate content is 90-99 wt% based on the total mass of the solid oxygen candle oxygen generator; and/or the number of the groups of groups,
the content of the nano catalyst is 1wt% to 3wt%.
4. The solid oxygen candle oxygen generator of claim 1 or 2, wherein the chlorate content is 97-99 wt% based on the total mass of the solid oxygen candle oxygen generator; and/or the number of the groups of groups,
the content of the nano catalyst is 1wt% to 2wt%.
5. The solid oxygen candle oxygen generator of claim 4, wherein the chlorate content is 94wt% to 96wt%, based on the total mass of the solid oxygen candle oxygen generator.
6. The solid oxygen candle oxygen generator of claim 1 or 2, wherein the solid oxygen candle oxygen generator is free of metal fuel.
7. The solid oxygen candle oxygen generator according to claim 1 or 2, wherein the solid oxygen candle oxygen generator further comprises one or more of a chlorine inhibitor, a binder and a stabilizer.
8. The solid oxygen candle oxygen generator according to claim 7, wherein,
the content of the chlorine inhibitor is 0-5wt% based on the total mass of the solid oxygen candle oxygen generator;
the content of the binder is 0-5wt% based on the total mass of the solid oxygen candle oxygen generator;
the content of the stabilizer is 0-5wt% based on the total mass of the solid oxygen candle oxygen generator.
9. The solid oxygen candle oxygen generator according to claim 1 or 2, wherein the solid oxygen candle oxygen generator comprises, in parts by mass: 90-100 parts of chlorate, 0.5-5 parts of nano catalyst, 0-5 parts of chlorine inhibitor, 0-5 parts of binder and 0-5 parts of stabilizer.
10. The solid oxygen candle oxygen generator according to claim 1 or 2, wherein the solid oxygen candle oxygen generator comprises, in parts by mass: 94-96 parts of chlorate, 1-2 parts of nano catalyst, 1-2 parts of chlorine inhibitor, 1-2 parts of binder and 1-2 parts of stabilizer.
11. The solid oxygen candle oxygen generator according to claim 7, wherein the chlorine inhibitor is one or a combination of a plurality of barium peroxide, sodium peroxide and lithium peroxide; and/or the number of the groups of groups,
the binder is one or a combination of a plurality of kaolin and diatomite; and/or the number of the groups of groups,
the stabilizer is one or a combination of more of potassium perchlorate and sodium perchlorate; and/or the number of the groups of groups,
the chlorate has the particle size of 40-80 meshes; and/or the number of the groups of groups,
the particle size of the chlorine inhibitor is 120-200 meshes; and/or the number of the groups of groups,
the particle size of the binder is 120-200 meshes; and/or the number of the groups of groups,
the grain diameter of the stabilizer is 400-500 meshes.
12. The method for preparing the solid oxygen candle oxygen generator according to any one of claims 1 to 11, wherein the components are uniformly mixed; and (5) pressing and forming.
13. The method for preparing the solid oxygen candle oxygen generator according to claim 12, wherein,
the pressure of the compression molding is 10T-15T/cm 2 The method comprises the steps of carrying out a first treatment on the surface of the Or pressing to density of 2.0-2.3g/cm 3 Is provided.
14. An oxygen candle comprising the solid oxygen candle oxygen generator of any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612693.4A CN114906815B (en) | 2022-05-31 | 2022-05-31 | Ultralow-temperature nano solid oxygen candle oxygen generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210612693.4A CN114906815B (en) | 2022-05-31 | 2022-05-31 | Ultralow-temperature nano solid oxygen candle oxygen generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114906815A CN114906815A (en) | 2022-08-16 |
| CN114906815B true CN114906815B (en) | 2024-03-12 |
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| CN202210612693.4A Active CN114906815B (en) | 2022-05-31 | 2022-05-31 | Ultralow-temperature nano solid oxygen candle oxygen generator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073741A (en) * | 1976-03-05 | 1978-02-14 | A-T-O Inc. | Cobalt oxide chlorate candle |
| CN103213948A (en) * | 2012-12-12 | 2013-07-24 | 湖北航天化学技术研究所 | Temperature-insensitive oxygen candle |
| CN107619021A (en) * | 2016-09-09 | 2018-01-23 | 湖北航天化学技术研究所 | A kind of chlorate oxygen candle of stable burning oxygen supply and preparation method thereof |
| CN113912017A (en) * | 2021-10-31 | 2022-01-11 | 中国船舶重工集团公司第七一八研究所 | Oxygen candle oxygen production medicine core and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4073741A (en) * | 1976-03-05 | 1978-02-14 | A-T-O Inc. | Cobalt oxide chlorate candle |
| CN103213948A (en) * | 2012-12-12 | 2013-07-24 | 湖北航天化学技术研究所 | Temperature-insensitive oxygen candle |
| CN107619021A (en) * | 2016-09-09 | 2018-01-23 | 湖北航天化学技术研究所 | A kind of chlorate oxygen candle of stable burning oxygen supply and preparation method thereof |
| CN113912017A (en) * | 2021-10-31 | 2022-01-11 | 中国船舶重工集团公司第七一八研究所 | Oxygen candle oxygen production medicine core and preparation method thereof |
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