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Temperature-insensitive oxygen candle

A sensitive, oxygen candle technology, applied in the field of chemical oxygen source formulation, can solve the problems of large catalyst ratio, formula temperature sensitivity, reduction of effective oxygen content, etc., to achieve the effect of stable structure and reasonable formula

Active Publication Date: 2015-02-25
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The proportion of catalyst in this formula is relatively large, which not only increases the weight of the oxygen candle, reduces the effective oxygen content, but also makes the formula sensitive to temperature, affecting the ignition reliability of the oxygen candle and the stability of oxygen supply
Lithium peroxide is a relatively expensive reagent, and it cannot be produced domestically, so it can only rely on imports, resulting in high cost of oxygen candles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The combustible layer is 40g, the ratio (mass percentage) is 85.5% of sodium chlorate, 2.5% of potassium perchlorate, 2.5% of cobalt hydroxide, 2.5% of titanium powder, 2% of silicon powder, and 5% of sodium peroxide.

[0023] 80g transition layer, the ratio (mass percentage) is 87% sodium chlorate, 1.5% potassium perchlorate, 1.5% cobalt hydroxide, 1% titanium powder, 3% iron powder, 1% silica fume, 5% sodium peroxide, kaolin 0.

[0024] The main candle body is 265g, the proportion (mass percentage) is 78.5% of sodium chlorate, 0.5% of potassium perchlorate, 0.5% of cobalt hydroxide, 0 of titanium powder, 5.5% of iron powder, 2% of silicon powder, 5% of sodium peroxide, and 8 of kaolin %. Use a mortar or an automatic mixer to dry mix and mix well, and then add a certain amount of distilled water to wet mix and mix well.

[0025] The main candle body formula medicine is at the bottom, the transition medicine is in the middle, and the flammable medicine is on the top, which a...

Embodiment 2

[0027] The combustible layer is 50g, the proportion (mass percentage) is 85% sodium chlorate, 1.5% potassium perchlorate, 3% cobalt chloride, 2.5% titanium powder, 2% silicon powder, and 6% barium peroxide.

[0028] Transition drug layer 60g, the proportion (mass percentage) is 82% sodium chlorate, 1.5% potassium perchlorate, 0.5% cobalt chloride, 1% titanium powder, 2% magnesium powder, 2% silicon powder, 6% barium peroxide, silicon Algae earth 5%.

[0029] The main candle body is 380g, the proportion (mass percentage) is 75% sodium chlorate, 10% potassium perchlorate, 0.5% cobalt chloride, 0.5 titanium powder, 3% magnesium powder, 2% silicon powder, 6% barium peroxide, diatom Soil 3%. Use a mortar or an automatic mixer to dry mix and mix well, and then add a certain amount of distilled water to wet mix and mix well.

[0030] The main candle body formula medicine is at the bottom, the transition medicine is in the middle, and the flammable medicine is on the top, which are loaded ...

Embodiment 3

[0032] The combustible layer is 40g, the ratio is 86.5% of sodium chlorate, 2.5% of potassium perchlorate, 2.5% of cobalt oxide, 2.5% of magnesium powder, 2% of silicon powder, and 4% of sodium peroxide.

[0033] 80g transition layer, the ratio is sodium chlorate 81.5%, potassium perchlorate 2.5%, cobalt oxide 0.5%, magnesium powder 1%, iron powder 3.5%, silicon powder 2%, sodium peroxide 4%, kaolin 5%.

[0034] The main candle body is 265g, and the ratio is 77% sodium chlorate, 2.5% potassium perchlorate, 0.5% cobalt oxide, 0 magnesium powder, 6% iron powder, 2% silicon powder, 4% sodium peroxide, and 8% kaolin. Use a mortar or an automatic mixer to dry mix and mix well, and then add a certain amount of distilled water to wet mix and mix well.

[0035] The main candle body formula medicine is at the bottom, the transition medicine is in the middle, and the flammable medicine is on the top, which are loaded into the mold press to form an oxygen candle. Place it in an oven at 120°C f...

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PUM

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Abstract

A temperature-insensitive oxygen candle, comprising the a main candle body which is formed by pressing the following raw materials by weight: 72-85 parts of sodium chlorate, 1-10 parts of fuel, 1-15 parts of stabilizing agent, 0.5-1 parts of catalyst, 2-6 parts of chlorine suppressant, and 4-10 parts of binder. An inflammable drug layer is arranged on the main candle body, a transition drug layer is arranged between the inflammable drug layer and the main candle body, and the temperature-insensitive oxygen candle of the invention may be in one layer structure that is the main candle body. The temperature-insensitive oxygen candle may be in a two-layer structure, comprising the inflammable drug layer and the main candle body. The temperature-insensitive oxygen candle of the invention may be in a three-layer structure, from top to bottom, orderly comprising: the inflammable drug layer, the transition drug layer and the main candle body. From top to bottom, in the temperature-insensitive oxygen candle of the invention, catalyst content is gradually reduced, and binder contents are gradually increased. The oxygen candle can be reliably ignited under high, lower and normal temperatures; and the oxygen candle has advantages of stabile combustion and non-flowing combustion product, is suitable for various sizes of solid oxygen generators, and is applied in the fields of ship, vessel, aviation and spaceflight, mine, self rescue when various disasters occur.

Description

Technical field [0001] The invention relates to a chemical oxygen source formula, in particular to a sodium chlorate oxygen candle that is not sensitive to temperature. Background technique [0002] The solid chemical oxygen generator is a new generation of emergency oxygen supply equipment developed by the principle that oxygen-rich chlorate or perchlorate undergoes thermal decomposition reaction to release oxygen. The advantages of the solid chemical oxygen generator are: long life, no spare parts, more powerful guarantee; high oxygen production, under the same conditions of producing oxygen, the volume of the oxygen candle is only 1 / 3 of the volume of the high-pressure oxygen cylinder, which is solid chemical The oxygen generator is convenient for transportation, storage and arrangement; the solid chemical oxygen generator can supply oxygen according to the pre-designed oxygen supply mode, without adjustment, simple and reliable to use; the storage and use of oxygen candles ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/02
Inventor 周兴明胡晓毛胜华徐浩星张毅毛龙
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY