CN114804987A - Acid-base intervention solid ignition powder for oxygen candle and preparation method thereof - Google Patents
Acid-base intervention solid ignition powder for oxygen candle and preparation method thereof Download PDFInfo
- Publication number
- CN114804987A CN114804987A CN202210614933.4A CN202210614933A CN114804987A CN 114804987 A CN114804987 A CN 114804987A CN 202210614933 A CN202210614933 A CN 202210614933A CN 114804987 A CN114804987 A CN 114804987A
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- CN
- China
- Prior art keywords
- oxygen
- powder
- ignition
- candle
- oxygen candle
- Prior art date
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- Granted
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 304
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 304
- 239000001301 oxygen Substances 0.000 title claims abstract description 304
- 239000000843 powder Substances 0.000 title claims abstract description 70
- 239000007787 solid Substances 0.000 title abstract description 95
- 238000002360 preparation method Methods 0.000 title abstract description 29
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229940083898 barium chromate Drugs 0.000 claims abstract description 40
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 94
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 239000011230 binding agent Substances 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 18
- 229940079593 drug Drugs 0.000 claims description 18
- 239000005995 Aluminium silicate Substances 0.000 claims description 14
- 235000012211 aluminium silicate Nutrition 0.000 claims description 14
- 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 14
- 238000002156 mixing Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000012546 transfer Methods 0.000 abstract description 6
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 42
- 238000010438 heat treatment Methods 0.000 description 29
- 239000002994 raw material Substances 0.000 description 28
- 239000002245 particle Substances 0.000 description 27
- 239000000446 fuel Substances 0.000 description 22
- 238000012360 testing method Methods 0.000 description 21
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 description 20
- 239000002360 explosive Substances 0.000 description 19
- 238000002485 combustion reaction Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- 230000008014 freezing Effects 0.000 description 15
- 238000007710 freezing Methods 0.000 description 15
- 239000011943 nanocatalyst Substances 0.000 description 15
- 239000000126 substance Substances 0.000 description 13
- 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 description 12
- 238000004200 deflagration Methods 0.000 description 12
- 150000002978 peroxides Chemical class 0.000 description 12
- 238000004880 explosion Methods 0.000 description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 10
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- 229910052801 chlorine Inorganic materials 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 10
- 238000003825 pressing Methods 0.000 description 10
- 229910044991 metal oxide Inorganic materials 0.000 description 9
- 150000004706 metal oxides Chemical class 0.000 description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 8
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 8
- 235000013350 formula milk Nutrition 0.000 description 8
- 239000011810 insulating material Substances 0.000 description 8
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 7
- 239000004927 clay Substances 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 7
- 238000011160 research Methods 0.000 description 7
- 239000003381 stabilizer Substances 0.000 description 7
- 239000012774 insulation material Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 description 5
- 238000007580 dry-mixing Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910001487 potassium perchlorate Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000011863 silicon-based powder Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- HPGPEWYJWRWDTP-UHFFFAOYSA-N lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 description 3
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- IUYLTEAJCNAMJK-UHFFFAOYSA-N cobalt(2+);oxygen(2-) Chemical compound [O-2].[Co+2] IUYLTEAJCNAMJK-UHFFFAOYSA-N 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 description 2
- 229910001488 sodium perchlorate Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 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
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012395 formulation development Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 235000020610 powder formula Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0008—Compounding the ingredient
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
- C06B23/001—Fillers, gelling and thickening agents (e.g. fibres), absorbents for nitroglycerine
Abstract
The invention relates to an acid-base intervention ignition powder for a solid oxygen candle and a preparation method thereof. The ignition powder for the oxygen candle comprises barium chromate and boron powder; the weight ratio of the barium chromate to the boron powder is (90-96) to (4-10). The oxygen candle ignition powder and the preparation method thereof provided by the invention have the advantages that the ignition powder prepared by the method is accurate in proportioning, simple and safe in production process, good in ignition and fire transfer effects, strong in stability and less in pollution.
Description
Technical Field
The invention relates to an acid-base intervention ignition powder for a solid oxygen candle and a preparation method thereof.
Background
Oxygen candles are a solid source of oxygen that is easy to store and convenient to use. It has a high oxygen storage capacity, similar to the density of liquid oxygen, which is about 3 times that of compressed oxygen of the same volume. The oxygen candle is relatively stable, does not produce the leakage phenomenon, and have the advantages of producing oxygen rapidly, produce oxygen amount greatly, the apparatus is small, light in weight, storage period long etc., the oxygen candle mainly comprises ignition system, produces oxygen system, thermal-insulated system and filtration system, want to make the oxygen candle produce the chemical reaction and release oxygen, initiate and ignite through the ignition system, this involves the formulation development and mature preparation technology of the ignition powder, the ignition powder for oxygen candle has already had more in-depth research at present stage, can realize the goal of transmitting fire basically. Zirconium powder is generally used as a main raw material in China, barium nitrate or barium peroxide is used as an oxidant, and the barium nitrate or barium peroxide is limited by components of the barium nitrate or barium peroxide, so that the ignition performance of the barium nitrate or barium peroxide is unstable, and meanwhile, the barium nitrate or barium peroxide is easy to absorb moisture and deteriorate, and the barium peroxide is easy to decompose, so that the product cannot be stored for a long time. The ignition charge disclosed in CN108083235A provides an improvement to this disadvantage.
At present, most of the domestic oxygen candle ignition powder is immature in process, mostly has insufficient heat productivity, relatively difficult in initiation of heat release, low in oxygen release speed, non-ignitable at the low temperature of-40 ℃, and often cannot be ignited or cannot be ignited continuously at normal temperature, metal fuel in CN108083235A adopts magnesium powder, titanium powder and aluminum powder, the heat value of the metal fuel is weaker than that of non-metal fuel, the process adopts a mechanical mixing mode, the method causes uneven mixing of ignition powder formula, the performance of the ignition powder can also generate influences of different degrees, and meanwhile, the safety is not easy to guarantee.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
The invention provides an oxygen candle ignition powder and a preparation process thereof, so that the ignition powder prepared by the method has the advantages of accurate proportioning, simple and safe production process, good ignition and fire transfer effects, strong stability and less pollution.
An ignition powder for oxygen candle comprises barium chromate and boron powder; wherein the weight ratio of the barium chromate to the boron powder is (90-96) to (4-10).
According to the embodiment of the invention, in the ignition powder for the oxygen candle, the weight ratio of barium chromate to boron powder is (90-92) to (5-6), such as 91:6, 92:6 or 90: 5. Researches find that the barium chromate and the boron powder can ensure that the phenomena of overhigh heat, explosion and the like can not occur in the solid oxygen candle within the proportion range, the combustion stability can be ensured, and the heat release is balanced. If the content of barium chromate is too high and the content of boron powder is too low, the ignition powder cannot be continuously combusted; on the contrary, the ignition powder is burnt violently and burns at an over-high speed, so that dangerous conditions are easily caused when the ignition powder is used in the oxygen candle.
According to an embodiment of the present invention, the content of barium chromate is 90 wt% to 96 wt%, such as 90 wt% to 92 wt%, specifically such as 90 wt%, 91 wt%, 92 wt%, 93 wt%, 94 wt%, 95 wt%, 96 wt%, based on the total mass of the ignition powder for an oxygen candle.
According to the embodiment of the invention, the ignition powder for the oxygen candle also comprises a binding agent. The binder is used in an amount such that the ignition charge can be sufficiently encapsulated. Specifically, the binder is present in an amount of 1 wt% to 10 wt%, or 2 wt% to 5 wt%, for example, 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, 6 wt%, 7 wt%, 8 wt%, 9 wt%, 10 wt%, based on the total mass of the ignition charge for oxygen candle.
In some embodiments of the present invention, the ignition powder for an oxygen candle comprises, by mass: 50-90 parts of barium chromate, 10-30 parts of boron powder and 1-10 parts of binder.
In some embodiments of the present invention, the ignition powder for an oxygen candle comprises, by mass: 90-96 parts of barium chromate, 4-10 parts of boron powder and 1-10 parts of binder.
In some embodiments of the present invention, the ignition powder for an oxygen candle comprises, by mass: 90-92 parts of barium chromate, 5-6 parts of boron powder and 2-5 parts of binder.
According to the embodiment of the invention, the ignition powder for the oxygen candle is prepared or prepared by taking barium chromate, boron powder and a binder as raw materials.
In some embodiments of the present invention, the total mass of the ignition powder for an oxygen candle is 100 parts.
According to the embodiment of the invention, the caking agent is one or a mixture of more than two of kaolin, diatomite and silicon dioxide.
The invention also provides a preparation method of the ignition powder for the oxygen candle, which comprises the following steps:
1) dissolving barium chromate in acid until the barium chromate is completely dissolved; then adding boron powder;
2) neutralizing the material obtained in the step 1) with alkali liquor until the pH value is 7; filtering and drying;
3) mixing the material obtained in the step 2) and the binder in water, and drying.
In particular, the acid may be selected from hydrochloric acid, sulfuric acid, nitric acid, preferably hydrochloric acid.
In particular, the base may be selected from sodium hydroxide, potassium hydroxide, magnesium hydroxide, preferably sodium hydroxide.
In some embodiments, the method for preparing the ignition powder for oxygen candle includes: taking barium chromate, boron powder and a binder according to the proportion; dissolving barium chromate in acid (hydrochloric acid) until the barium chromate is completely dissolved; adding boron powder, stirring on a magnetic stirrer, slowly dripping the prepared sodium hydroxide solution into a barium chromate/hydrochloric acid solution, measuring the pH by using a pH test paper until the solution is completely neutralized, continuing stirring, uniformly mixing, filtering, drying the ignition powder obtained by filtering, adding a binder into a flask after drying, adding a certain amount of water, continuing mixing, and drying after mixing to obtain the ignition powder for the oxygen candle.
The invention also discloses the ignition powder for the oxygen candle prepared by the method.
The invention also comprises the application of the ignition powder for the oxygen candle in the preparation of the oxygen candle.
An oxygen candle comprises the ignition powder for the oxygen candle. In some embodiments, the heat generating agent and/or the oxygen generating drug column are further included.
In some embodiments, a heat generating agent is used as described below.
In some embodiments, oxygen producing cartridges as described below are used.
The non-metal fuel adopted by the invention has higher heat value, the using amount of the ignition powder in the oxygen candle is less under the condition of producing the same effect, the property that the barium chromate is dissolved in acid (hydrochloric acid) is utilized, the particle size of the barium chromate precipitated by neutralization after the barium chromate is dissolved in the acid (hydrochloric acid) is finer, and the barium chromate is mixed with the reducing agent and the binder in the water medium, so that the ignition powder is mixed more uniformly, the mechanical mixing mode is avoided, and the preparation process is safer.
Experiments prove that 2g of the oxygen candle ignition powder can be used for continuously burning 150-250g (such as 200g) of oxygen generating explosive columns, and the explosive columns are completely burnt.
The barium chromate used in the invention is a fire retardant, is beneficial to the stable combustion of the propellant without explosion, and the obtained oxygen candle ignition powder has better ignition effect from the aspect of ignition performance, and is slow, uniform and stable in combustion. The particles after the ignition powder is combusted have uniform size and even distribution. Meanwhile, the preparation process is safe and reliable and has little pollution.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The examples do not specify particular techniques or conditions, and are to be construed in accordance with the description of the art in the literature or with the specification of the product. The reagents or instruments used are conventional products available from regular distributors, not indicated by the manufacturer.
Example 1
This example provides an ignition powder for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of |
| Barium chromate | 1.82g |
| Boron powder | 0.12g |
| Kaolin clay | 0.06g |
The preparation method comprises the following steps: 1.82g of barium chromate was added to hydrochloric acid, followed by stirring until completely dissolved, and poured into a flask, and 0.12g of boron powder was further poured into the flask. The sodium hydroxide required to neutralize the hydrochloric acid was also calculated, and the calculation resulted in 4.8g of sodium hydroxide that should be weighed and then dissolved in 80ml of water. The flask containing the diluted hydrochloric acid was placed on a magnetic stirrer and stirred at 800r/min, at which time a sodium hydroxide solution was added dropwise at a rate of 1ml/min, the pH was measured while adding sodium hydroxide dropwise, at which time a yellow precipitate was precipitated in the flask and the solution changed from orange to yellow, and sodium hydroxide was continuously added dropwise until the pH became 7, and the solution was completely neutralized. Mixing was continued until uniform. The mixture in the flask was repeatedly filtered. And drying the filtered ignition powder for 3 hours, taking out the ignition powder, grinding the ignition powder into powder by using a mortar, mixing the powder with 0.06g of kaolin in a water medium at the rotating speed of 800r/min, taking out the powder and drying the powder.
The post-ignition results were as follows: from the ignition performance, the ignition powder is uniform and slow in combustion, particles after combustion are uniform in size, the ignition powder is a better ignition powder (or delay powder), and meanwhile, effective ignition and fire transfer can be carried out in a low-temperature environment (-40 ℃).
Example 2
This example provides an ignition powder for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of |
| Barium chromate | 1.84g |
| Boron powder | 0.12g |
| Kaolin clay | 0.04g |
The preparation method is the same as that of example 1.
The post-ignition results were as follows: from the ignition performance, the ignition powder is uniform and slow in combustion, particles after combustion are uniform in size, the ignition powder is a better ignition powder (delay powder), and meanwhile, effective ignition and fire transfer can be carried out in a low-temperature environment (-40 ℃).
Example 3
This example provides an ignition powder for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of |
| Barium chromate | 1.8g |
| Boron powder | 0.1g |
| Kaolin clay | 0.1g |
The preparation method is the same as in example 1.
The post-ignition results were as follows: from the ignition performance, the ignition powder is uniform and slow in combustion, particles after combustion are uniform in size, the ignition powder is a better ignition powder (delay powder), and meanwhile, effective ignition and fire transfer can be carried out in a low-temperature environment (-40 ℃).
Example 4
The ignition powder for the oxygen candle is suitable for the following oxygen producing powder columns (the mass is 200g), and the ignition powder comprises the following raw materials:
| composition (I) | Quality of | Particle size |
| Sodium chlorate | 188g | 80 mesh |
| Nano cobaltosic oxide | 4g | 10nm |
| Barium peroxide | 2g | 200 mesh |
| Kaolin clay | 2g | 200 mesh |
| Potassium perchlorate | 4g | 500 mesh |
The preparation method comprises the following steps: weighing the components according to the formula, and placing the components in a mixer for dryingMixing until uniformly mixed. And pouring the mixed raw materials into a custom mold. At 10T/cm on a tablet press 2 The oxygen generating agent is pressed to a density of 2.0g/cm 3 The oxygen producing explosive column.
Example 5
The ignition powder for the oxygen candle can be matched with the following solid heating agent (5g) for the oxygen candle and the oxygen generating column in example 4 to prepare the oxygen candle.
The solid heating agent for the oxygen candle (5g) comprises the following raw materials:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 2.45g | 200 |
| Magnesium powder | 0.4g | 800 |
| Barium peroxide | 2.15g | 200 |
The preparation method comprises the following steps: pouring the components into a micro mixer to be fully mixed for 1 hour at 0.2T/cm 2 Was press-molded under a pressure of (5 g). The solid oxygen candle formed by pressing is placed in a groove at the top of an oxygen generating drug column (200g) by using a heating agent. Then wrapping with heat insulating material, and freezing in ultralow temperature freezing test chamber for 48 hrAnd finally, igniting. As a result: 200g of oxygen-producing explosive column can be completely combusted at the low temperature of minus 40 ℃, meanwhile, the exothermic compound has no phenomena of explosion, deflagration and the like, and the heat-insulating material is intact.
Comparative example 1
The formulation is identical to that of example 1, except that the preparation process is as follows: weighing barium chromate, boron powder and kaolin according to the formula, pouring the barium chromate, the boron powder and the kaolin into a mortar, and mechanically mixing.
And (3) testing results: from the ignition effect, the combustion is not uniform, the combustion speed is high and low, and the particle size is not uniform after the combustion; from the viewpoint of safety, if mass production is carried out by mechanical mixing, there is a certain risk that no solution is used as a medium.
Comparative example 2
The only difference from example 1 is:
| chemical name | Quality of |
| Barium chromate | 1.9g |
| Boron powder | 0.04g |
| Kaolin clay | 0.06g |
And (3) testing results: the ignition charge cannot be continuously burned.
Comparative example 3
The only difference from example 1 is:
| chemical name | Quality of |
| Barium chromate | 1.72g |
| Boron powder | 0.22g |
| Kaolin clay | 0.06g |
And (3) testing results: the ignition powder burns violently and burns at an over-high speed, and is easy to cause dangerous conditions when used in the oxygen candle.
Ultralow temperature nano solid oxygen candle oxygen generating agent
The CN107619021A and the CN107867675A both add fuel into the oxygen generating drug column, the addition of the fuel usually causes the increase of heat generation quantity and directly causes the rise of the wall temperature of the oxygen candle, and the excessive heat in the oxygen candle also causes the side reaction of the chlorate oxygen candle to generate chlorine. At present, most of oxygen candle products can not realize continuous combustion at the low temperature of-40 ℃, which becomes a problem to be solved at present.
In order to solve at least one of the technical problems, the invention also provides an ultralow temperature nano solid oxygen candle oxygen generating agent, 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 production quantity, stable oxygen release and no chlorine in released gas.
A solid oxygen candle generator comprising: chlorate and a 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 more 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-50 nm.
The inventor researches and discovers that under the condition of achieving the same oxygen release rate, the dosage of the used nano catalyst is obviously reduced compared with the dosage of the common catalyst, so that the proportion of sodium chlorate can be obviously improved, and the oxygen release amount can be increased. In addition, the nano catalyst can obviously improve the chlorate content in the solid oxygen candle oxygen production agent. Therefore, under the condition of the same weight of the solid oxygen candle oxygen generating agent (oxygen generating explosive column), the oxygen release amount is more, the generated heat is less, and the oxygen candle is safer.
According to the embodiment of the invention, in the solid oxygen candle oxygen generating agent, the mass ratio of the nano catalyst to the chlorate is (1-2): (94-96).
According to the embodiment of the invention, the chlorate is contained in 90 wt% -99 wt% based on the total mass of the solid oxygen candle oxygen generating agent.
According to the embodiment of the invention, the chlorate is contained in the range of 97 wt% to 99 wt% based on the total mass of the solid oxygen candle oxygen generating agent.
According to an embodiment of the invention, the chlorate is present in an amount of 94 wt% to 96 wt%, e.g. 94 wt%, 95 wt%, 96 wt%, based on the total mass of the solid oxygen candle oxygen generating agent.
According to the embodiment of the invention, the content of the nano-catalyst is 1 wt% -3 wt% based on the total mass of the solid oxygen candle oxygen generating agent.
According to an embodiment of the present invention, the nano catalyst is contained in an amount of 1 wt% to 2 wt%, for example, 1 wt%, 1.5 wt%, 2 wt%, based on the total mass of the solid oxygen candle oxygen generating agent.
According to an embodiment of the present invention, the solid oxygen candle oxygen generator is free of metal fuel.
According to the embodiment of the invention, the solid oxygen candle oxygen generating agent is composed of or prepared by taking chlorate and a nano catalyst as raw materials (such as an oxygen generating cartridge).
In some embodiments of the invention, the solid oxygen candle oxygen generating agent has the same meaning as the oxygen generating cartridge.
According to the embodiment of the invention, the solid oxygen candle oxygen generating agent 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 5 wt%, such as 0, 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, based on the total mass of the solid oxygen candle oxygen generating agent.
According to an embodiment of the present invention, the content of the binder is 0 to 5 wt%, such as 0, 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, based on the total mass of the solid oxygen candle oxygen generating agent.
According to an embodiment of the present invention, the content of the stabilizer is 0 to 5 wt%, such as 0, 1 wt%, 2 wt%, 3 wt%, 4 wt%, 5 wt%, based on the total mass of the solid oxygen candle oxygen generating agent.
In some embodiments of the present invention, the solid oxygen candle oxygen generating agent comprises, in parts by mass: 90-100 parts of chlorate, 0.5-5 parts of the nano catalyst, 0-5 parts of a chlorine inhibitor, 0-5 parts of a binder and 0-5 parts of a stabilizer.
In some embodiments of the present invention, the solid oxygen candle oxygen generating agent comprises, in parts by mass: 94-96 parts of chlorate, 1-2 parts of the nano catalyst, 1-2 parts of a chlorine inhibitor, 1-2 parts of a binder and 1-2 parts of a stabilizer.
In some embodiments of the present invention, the solid oxygen generating agent is composed of or made of (e.g. oxygen generating cartridge) chlorate, the nano-catalyst, a chlorine inhibitor, a binder and a stabilizer.
In some embodiments of the invention, the total amount of the solid oxygen candle oxygen generating agent is 100 parts.
According to the embodiment of the invention, the chlorate is one or a combination of potassium chlorate and sodium chlorate.
According to the embodiment of the invention, the chlorine inhibitor is one or a combination of barium peroxide, sodium peroxide and lithium peroxide.
According to the embodiment of the invention, the binder is one or a combination of kaolin and diatomite.
According to the embodiment of the invention, the stabilizer is one or a combination of potassium perchlorate and sodium perchlorate.
According to the embodiment of the invention, the chlorate has the particle size of 40-80 meshes. Researches find that the grain diameter of the chlorate 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 the complex process of wet pressing can be avoided; if the wet pressing does not completely dry the grains, certain chlorine gas can be generated.
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 producing agent does not contain metal fuel, greatly reduces the heat production quantity of the oxygen candle, and simultaneously can ensure that a drug column is completely combusted at the low temperature of minus 40 ℃. The use of 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 generating agent (oxygen generating drug column), 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 (ii) a Or preferably pressed into a density of 2.0-2.3g/cm 3 The oxygen producing explosive column.
In some embodiments, the solid oxygen candle oxygen generating agent (oxygen generating cartridge) is prepared by a method comprising:
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 10T-15T/cm on a tablet press 2 The oxygen generating agent is pressed into the oxygen generating agent with the density of 2.0-2.3g/cm 3 The oxygen producing explosive column.
The invention also comprises the solid oxygen candle oxygen generating agent (oxygen generating drug column) prepared by the method.
The invention also comprises the application of the solid oxygen candle oxygen generating agent (oxygen generating drug column) in the preparation of the oxygen candle.
The oxygen generating agent (oxygen generating drug column) of the solid oxygen candle is packaged into a solid oxygen generator to prepare the oxygen candle.
An oxygen candle comprises the solid oxygen candle oxygen generating agent (oxygen generating drug column). In some embodiments, the composition further comprises a heat generating agent and/or an ignition charge.
Experiments prove that the solid oxygen candle oxygen generating agent (oxygen generating drug column) is frozen to be more than 24-48h at the temperature of minus 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 generating agent (oxygen generating drug column) has good chlorine gas removing effect and low cost.
2) The solid oxygen candle oxygen generating agent (oxygen generating grain) of the invention can continuously burn the grain without metal fuel, continuously supply oxygen until the burning is complete, and improve the safety and the reliability.
3) The solid oxygen candle oxygen generating agent (oxygen generating drug column) uses the nano catalyst, can greatly reduce the chlorate decomposition temperature, and can adjust the oxygen releasing rate and the oxygen releasing stability of the oxygen candle by adjusting the formula content of each component.
4) The solid oxygen candle oxygen generating agent (oxygen generating grain) can continuously supply oxygen in a low-temperature environment of minus 40 ℃ until the grain is completely combusted.
Example A1
A solid oxygen candle oxygen generating agent (oxygen generating column) has a mass of 100 g. The raw materials are as follows:
| composition (I) | Quality of | Particle size |
| Sodium chlorate | 94g | 80 mesh |
| Nano 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 dry-mixing in a mixer until the components are uniformly mixed. And pouring the mixed raw materials into a custom mold. At 10T/cm on a tablet press 2 The oxygen generating agent is pressed to a density of 2.0g/cm 3 The oxygen producing explosive column.
Packaging the oxygen generating columns into a solid oxygen generator, freezing the solid oxygen generator in an ultralow temperature freezing experiment box at the low temperature of-40 ℃ for 48 hours, and testing the solid oxygen generator in the ultralow temperature freezing experiment box at the temperature of-40 ℃ after 48 hours.
The solid oxygen candle oxygen generating agent (oxygen generating cartridge) test result of this example: the oxygen candle releases oxygen stably, 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 A2
A solid oxygen candle oxygen generating agent (oxygen generating column) has a mass of 100 g. The raw materials are as follows:
| composition (I) | Quality of | Particle size |
| Sodium chlorate | 90g | 40 mesh |
| Potassium chlorate | 4g | 40 mesh |
| Nano cobaltous 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, mixingAnd (4) dry-mixing in a material machine until the mixture is uniform. And pouring the mixed raw materials into a custom mold. At 12T/cm on a tablet press 2 The oxygen generating agent is pressed to a density of 2.1g/cm 3 The oxygen producing explosive column.
Packaging the oxygen generating columns into a solid oxygen generator, freezing the solid oxygen generator in an ultralow temperature freezing experiment box at the low temperature of-40 ℃ for 48 hours, and testing the solid oxygen generator in the ultralow temperature freezing experiment box at the temperature of-40 ℃ after 48 hours.
The solid oxygen candle oxygen generating agent (oxygen generating cartridge) test result of this example: the oxygen candle releases oxygen stably, 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 A3
A solid oxygen candle oxygen generating agent (oxygen generating column) has a mass of 100 g. The raw materials are as follows:
| composition (I) | Parts by mass | Particle size |
| Sodium chlorate | 92％ | 60 mesh |
| Potassium chlorate | 4％ | 60 mesh |
| Nano cobaltosic oxide | 1％ | 50nm |
| Peroxy compoundDissolving sodium | 1％ | 150 mesh |
| Diatomite | 1％ | 150 mesh |
| Potassium perchlorate | 1％ | 450 mesh |
The preparation method comprises the following steps: weighing chlorate and other raw material components, and dry-mixing in a mixer until the components are uniformly mixed. And pouring the mixed raw materials into a custom mold. At 15T/cm on a tablet press 2 The oxygen generating agent is pressed to a density of 2.3g/cm 3 The oxygen producing explosive column.
Packaging the oxygen generating columns into a solid oxygen generator, freezing the solid oxygen generator in an ultralow temperature freezing experiment box at the low temperature of-40 ℃ for 48 hours, and testing the solid oxygen generator in the ultralow temperature freezing experiment box at the temperature of-40 ℃ after 48 hours.
The solid oxygen candle oxygen generating agent (oxygen generating cartridge) test result of this example: the oxygen candle releases oxygen stably, 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 A1
The only difference from example a1 is: the nano cobaltosic oxide is replaced by 400-mesh cobaltosic oxide.
Test results of this comparative example solid oxygen candle oxygen generator (oxygen generating cartridge): the grains are not completely combusted.
Comparative example A2
The only difference from example A1 is that the following formulation was used: 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 fragments.
Test results of the solid oxygen candle oxygen generating agent (oxygen generating column) of this comparative example: the temperature of the wall surface of the solid oxygen generator is too high, and the fire transfer is unstable in the environment of-40 ℃.
Heating agent for solid oxygen candle
When the oxygen candle is required to generate chemical reaction to release oxygen, ignition is initiated by the ignition system, and the heat supply system continuously supplies heat for the oxygen production system until the oxygen production system is completely combusted. CN1035248A and CN108083234B refer to the heat supply system as a 'heating element' or a 'heating element layer', and the formula is mostly formed by combining chlorate, a large amount of fuel and catalyst, so that the oxygen candle can play a role in continuously supplying heat to an oxygen production system, and the combustion reliability of the oxygen candle is improved.
At present, most oxygen candle heating body layers mostly adopt a formula of combining chlorate, a large amount of catalyst and fuel, and the formula has the problems of insufficient heating quantity, poor ignition reliability and no ignition at the low temperature of-40 ℃. The heat generating body layer in the chinese patent CN108083234B mainly comprises chlorate, catalyst, fuel and binder, and is heavy and difficult to ignite at low temperature.
In order to solve at least one of the technical problems, the invention provides a heating agent for a solid oxygen candle, which has strong safety, high heat production, small dosage and strong reliability of ignition at-40 ℃ low temperature.
A solid exothermic agent for oxygen candle comprises metal oxide, fuel, and peroxide; the content of the peroxide is 40-60 wt% based on the total mass of the solid heat generating agent for the oxygen candle.
The heating agent containing fuel and metal oxide has the advantages of fast heating, large heating value, easy deflagration and explosion, and the risk of fire accident caused by burning through the shell of the oxygen supply device when being assembled in the solid oxygen generator. The invention has surprisingly found that the heat release of the heat generating agent can be controlled after the peroxide is added, and the activity of the heat generating agent is reduced, thereby avoiding the phenomena of explosion and deflagration. Therefore, the performance of the high-energy heating agent can be adjusted, and chlorine possibly generated can be absorbed at the initial stage of oxygen release of the explosive column, so that the ignition safety and reliability are improved.
Further research shows that if the content of the peroxide in the solid heat generating agent for the oxygen candle is lower than 40 wt%, the deflagration phenomenon is easy to occur; if the content of the peroxide is more than 60 wt%, the heat generating agent fails and normal heat generation is not possible.
According to the embodiment of the present invention, the content of the peroxide is 43 to 52 wt%, specifically, for example, 40 wt%, 41 wt%, 42 wt%, 43 wt%, 44 wt%, 45 wt%, 48 wt%, 50 wt%, 51 wt%, 52 wt%, 53 wt%, 54 wt%, 55 wt%, 56 wt%, 57 wt%, 58 wt%, 59 wt%, 60 wt% based on the total mass of the heat generating agent for solid oxygen candle.
According to the embodiment of the invention, in the solid heat generating agent for the oxygen candle, the mass ratio of the metal oxide to the fuel is (32-52): 4-8, or (42-49): 4-8, or (44-49): 6-8, specifically, 49:8, 44:6, 52:8, 32: 8.
Research shows that the explosion, deflagration and other phenomena can be ensured not to occur in the range. Particularly, if the fuel ratio is too high, explosion and knocking are likely to occur.
According to the embodiment of the invention, the solid heat generating agent for the oxygen candle comprises, by mass, 40-80 parts of metal oxide, 40-80 parts of peroxide and 1-10 parts of fuel.
According to the embodiment of the invention, the solid heat generating agent for the oxygen candle comprises 32-52 parts of metal oxide, 40-60 parts of peroxide and 6-8 parts of fuel by mass.
According to the embodiment of the invention, the total amount of the solid exothermic agent for the oxygen candle is 100 parts.
In addition, the solid oxygen candle heating agent has another remarkable advantage of continuous heat release at the low temperature of minus 40 ℃ and strong ignition reliability.
According to the embodiment of the invention, the solid oxygen candle heating agent is composed of or made of metal oxide, peroxide and fuel.
According to the embodiment of the invention, the particle size of the metal oxide is 120-200 meshes.
The particle size of the peroxide is 120-200 meshes.
The particle size of the fuel is 400-800 meshes.
Researches show that the performance of the heat generating agent can be ensured by adopting the metal oxide, the peroxide and the fuel with the particle size range, and the heat release amount is not too high or too low.
According to the embodiment of the invention, the metal oxide is one or a mixture of iron sesquioxide, ferroferric oxide, manganese dioxide and copper oxide.
According to the embodiment of the invention, one or two mixtures of barium peroxide and lithium peroxide are adopted as the peroxide.
According to the embodiment of the invention, the fuel is one or a mixture of several of iron powder, magnesium powder, cobalt powder, carbon powder and silicon powder.
According to the embodiment of the invention, the solid heat generating agent for the oxygen candle does not comprise aluminum or aluminum powder.
The invention also provides a preparation method of the heating agent for the solid oxygen candle, which comprises the following steps: mixing the above components. In some embodiments, compression molding is also included. The mixture can be placed in a groove at the top of the oxygen grain after being pressed and formed.
In some embodiments, the pressure of the press forming is 0.1-0.2T/cm 2 。
The invention also comprises the application of the high-energy heating agent for the solid oxygen candle in the preparation of the oxygen candle.
An oxygen candle comprises the solid oxygen candle heating agent; in some embodiments, the oxygen generating agent and/or the ignition charge are further included.
In some embodiments, the solid oxygen candle of the present invention is prepared by placing (e.g., pressing) the exothermic composition into a recess in the top of the column of oxygen generating drug, and wrapping with an insulating material.
Experiments prove that the solid heating agent for the oxygen candle can be frozen at the temperature of minus 40 ℃ for more than 24-48h, and can still be normally ignited in the low-temperature environment or the normal-temperature environment.
Experiments prove that 5g of the exothermic agent for the solid oxygen candle can be used for continuously burning 150-250g (for example 200g) of oxygen generating cartridges, and the cartridges are completely burnt.
The solid oxygen candle adopted by the invention uses the high-energy heating agent, can use a small amount of heating agent to release a large amount of heat, and the oxygen generating system in the oxygen supply candle can continuously release oxygen and can continuously release heat at the low temperature of minus 40 ℃, and the ignition reliability is strong. Aluminum powder is not used in the exothermic agent, and the production is relatively safe.
The mass of the oxygen producing grain used is 200g, and the raw materials are as follows:
the preparation method comprises the following steps: weighing the components according to the formula, and putting the components into a mixer for dry mixing until the components are uniformly mixed. And pouring the mixed raw materials into a custom mold. At 10T/cm on a tablet press 2 The oxygen generating agent is pressed to a density of 2.0g/cm 3 The oxygen producing explosive column.
Example B1
A solid heating agent for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 2.45g | 200 |
| Magnesium powder | 0.4g | 800 |
| Barium peroxide | 2.15g | 200 |
The preparation method comprises the following steps: pouring the components into a micro mixer to be fully mixed for 1 hour at 0.2T/cm 2 Was press-molded under a pressure of (5 g).
The test method comprises the following steps: the solid oxygen candle formed by pressing is placed in a groove at the top of an oxygen generating drug column (200g) by using a heating agent. Then, after wrapping the heat insulating material, the mixture is frozen in an ultralow temperature freezing test box for 48 hours and finally ignited.
The experimental results are as follows: 200g of oxygen-producing explosive column can be completely combusted at the low temperature of minus 40 ℃, meanwhile, the exothermic compound has no phenomena of explosion, deflagration and the like, and the heat-insulating material is intact.
Example B2
A solid heating agent for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 1g | 120 |
| Ferric oxide | 1.1g | 120 |
| Iron powder | 0.2g | 120 |
| Magnesium powder | 0.05g | 400 |
| Cobalt powder | 0.05g | 400 |
| Barium peroxide | 2.6g | 120 |
The preparation method comprises the following steps: pouring the components into a micro mixer to be fully mixed for 1 hour at 0.15T/cm 2 Was press-molded under a pressure of (5 g).
The test method comprises the following steps: the solid oxygen candle formed by pressing is placed in a groove at the top of an oxygen generating drug column (200g) by using a heating agent. Then, after wrapping the heat insulation material, the mixture is frozen in an ultralow temperature freezing test box for 48 hours, and finally, ignition is carried out.
The experimental results are as follows: 200g of oxygen-producing explosive column can be completely combusted at the low temperature of minus 40 ℃, meanwhile, the exothermic compound has no phenomena of explosion, deflagration and the like, and the heat-insulating material is intact.
Example B3
A solid heating agent for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of | Particle size/mesh |
| Ferric oxide | 2.6g | 200 |
| Silicon powder | 0.4g | 800 |
| Barium peroxide | 2g | 200 |
The preparation method comprises the following steps: pouring the components into a micro mixer to be fully mixed for 1 hour at 0.15T/cm 2 Was press-molded under a pressure of (5 g).
The test method comprises the following steps: the solid oxygen candle formed by pressing is placed in a groove at the top of an oxygen generating drug column (200g) by using a heating agent. Then, after wrapping the heat insulation material, the mixture is frozen in an ultralow temperature freezing test box for 48 hours, and finally, ignition is carried out.
The experimental results are as follows: 200g of oxygen-producing explosive column can be completely combusted at the low temperature of minus 40 ℃, meanwhile, the exothermic compound has no phenomena of explosion, deflagration and the like, and the heat-insulating material is intact.
Example B4
A solid heating agent for oxygen candle, which comprises the following raw materials:
| chemical name | Quality of | Particle size/mesh |
| Ferric oxide | 1.6g | 200 |
| Silicon powder | 0.4g | 800 |
| Barium peroxide | 3g | 200 |
The preparation method comprises the following steps: pouring the components into a micro mixer to be fully mixed for 1 hour at 0.15T/cm 2 Was press-molded under a pressure of (5 g).
The test method comprises the following steps: the solid oxygen candle formed by pressing is placed in a groove at the top of an oxygen generating drug column (200g) by using a heating agent. Then, after wrapping the heat insulation material, the mixture is frozen in an ultralow temperature freezing test box for 48 hours, and finally, ignition is carried out.
The experimental results are as follows: 200g of oxygen-producing explosive column can be completely combusted at the low temperature of minus 40 ℃, meanwhile, the exothermic compound has no phenomena of explosion, deflagration and the like, and the heat-insulating material is intact.
Comparative example B1
The solid exothermic composition for oxygen candle of this comparative example differs from example B1 only in that: barium peroxide is not included.
And (3) testing results: the insulation material is burned through with a severe deflagration phenomenon.
Comparative example B2
The solid exothermic agent for oxygen candle of this comparative example is different from example B1 only in that the raw materials are as follows:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 2.45g | 200 |
| Magnesium powder | 1.05g | 800 |
| Barium peroxide | 1.5g | 200 |
And (3) testing results: the insulation material is burned through with a severe deflagration phenomenon.
Comparative example B3
The solid exothermic agent for oxygen candle of this comparative example is different from example B1 only in that the raw materials are as follows:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 2.65g | 200 |
| Magnesium powder | 0.4g | 800 |
| Barium peroxide | 1.95g | 200 |
And (3) testing results: the insulation material is burned through with a severe deflagration phenomenon.
Comparative example B4
The solid exothermic agent for oxygen candle of this comparative example is different from example B1 only in that the raw materials are as follows:
| chemical name | Quality of | Particle size/mesh |
| Ferroferric oxide | 1.55g | 200 |
| Magnesium powder | 0.4g | 800 |
| Barium peroxide | 3.05g | 200 |
And (3) testing results: the exothermic agent fails to generate heat normally.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. An ignition powder for an oxygen candle is characterized by comprising barium chromate and boron powder; wherein the weight ratio of the barium chromate to the boron powder is (90-96) to (4-10).
2. The ignition powder for oxygen candle as claimed in claim 1, wherein the weight ratio of barium chromate and boron powder in the ignition powder for oxygen candle is (90-92): (5-6), optionally 91:6, 92:6 or 90: 5.
3. An ignition charge for oxygen candles as defined in claim 1 or 2, wherein the content of barium chromate is 90 wt% to 96 wt%, optionally 90 wt% to 92 wt%, based on the total mass of the ignition charge for oxygen candles.
4. An ignition charge for oxygen candles as defined in any one of claims 1-3, further comprising a binder; optionally, the content of the binder is 1 wt% to 10 wt%, optionally 2 wt% to 5 wt%, based on the total mass of the ignition powder for the oxygen candle;
optionally, the binder is one or a mixture of more than two of kaolin, diatomite and silicon dioxide.
5. An ignition charge for an oxygen candle as in any one of claims 1-4, comprising in parts by mass: 50-90 parts of barium chromate, 10-30 parts of boron powder and 1-10 parts of binder;
optionally, the composition comprises the following components in parts by mass: 90-96 parts of barium chromate, 4-10 parts of boron powder and 1-10 parts of binder;
optionally, the composition comprises, in parts by mass: 90-92 parts of barium chromate, 5-6 parts of boron powder and 2-5 parts of binder;
optionally, the total mass of the ignition powder for the oxygen candle is 100 parts.
6. A method of making an ignition charge for an oxygen candle as in any one of claims 1-5, comprising:
1) dissolving barium chromate in acid until the barium chromate is completely dissolved; then adding boron powder;
2) neutralizing the material obtained in the step 1) with alkali liquor until the pH value is 7; filtering and drying;
3) mixing the material obtained in the step 2) and the binder in water, and drying.
7. The method of claim 6, wherein the acid is selected from the group consisting of hydrochloric acid, sulfuric acid, nitric acid; and/or the presence of a gas in the gas,
the alkali is selected from sodium hydroxide, potassium hydroxide and magnesium hydroxide.
8. An ignition charge for oxygen candles, characterized by being prepared by the process of claim 6 or 7.
9. Use of an ignition charge for an oxygen candle as in any one of claims 1-5, 8 in the manufacture of an oxygen candle.
10. An oxygen candle which comprises an ignition powder for an oxygen candle as defined in any one of claims 1 to 5 and 8; or further comprises a heat generating agent and/or an oxygen generating drug column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614933.4A CN114804987B (en) | 2022-05-31 | 2022-05-31 | Ignition powder for acid-base interposed solid oxygen candle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210614933.4A CN114804987B (en) | 2022-05-31 | 2022-05-31 | Ignition powder for acid-base interposed solid oxygen candle and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114804987A true CN114804987A (en) | 2022-07-29 |
| CN114804987B CN114804987B (en) | 2023-04-28 |
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| CN202210614933.4A Active CN114804987B (en) | 2022-05-31 | 2022-05-31 | Ignition powder for acid-base interposed solid oxygen candle and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123303A (en) * | 1969-09-19 | 1978-10-31 | Ministry of Technology in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland | Ignitable compositions |
| JPH10325699A (en) * | 1997-05-23 | 1998-12-08 | Nichiyu Giken Kogyo Kk | Igniter |
| CN108083235A (en) * | 2017-12-29 | 2018-05-29 | 陕西斯达防爆安全科技股份有限公司 | A kind of oxygen candle starting mix and preparation method thereof |
-
2022
- 2022-05-31 CN CN202210614933.4A patent/CN114804987B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4123303A (en) * | 1969-09-19 | 1978-10-31 | Ministry of Technology in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland | Ignitable compositions |
| JPH10325699A (en) * | 1997-05-23 | 1998-12-08 | Nichiyu Giken Kogyo Kk | Igniter |
| CN108083235A (en) * | 2017-12-29 | 2018-05-29 | 陕西斯达防爆安全科技股份有限公司 | A kind of oxygen candle starting mix and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王志朋: "钨系共沉淀延期药结晶机理探讨", 《火工品》 * |
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| CN114804987B (en) | 2023-04-28 |
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