CN111252738A - Oxygen candle medicine - Google Patents

Oxygen candle medicine Download PDF

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Publication number
CN111252738A
CN111252738A CN202010069539.8A CN202010069539A CN111252738A CN 111252738 A CN111252738 A CN 111252738A CN 202010069539 A CN202010069539 A CN 202010069539A CN 111252738 A CN111252738 A CN 111252738A
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China
Prior art keywords
oxygen
percent
chlorate
layer
candle
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Pending
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CN202010069539.8A
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Chinese (zh)
Inventor
文新国
刘晓伟
马爱平
张龙
王大刚
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Shaanxi Asttar Explosion Proof Safety Technology Co ltd
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Shaanxi Asttar Explosion Proof Safety Technology Co ltd
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Priority to CN202010069539.8A priority Critical patent/CN111252738A/en
Publication of CN111252738A publication Critical patent/CN111252738A/en
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02Preparation of oxygen
    • C01B13/0296Generators releasing in a self-sustaining way pure oxygen from a solid charge, without interaction of it with a fluid nor external heating, e.g. chlorate candles or canisters containing them
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/02Preparation of oxygen
    • C01B13/0203Preparation of oxygen from inorganic compounds
    • C01B13/0218Chlorate

Abstract

The invention belongs to the technical field of solid chemical oxygen source formulas, and relates to an oxygen candle medicament, which comprises an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer; the oxygen generation layer comprises: 79 to 85 percent of chlorate, 0.5 to 8 percent of perchlorate, 1.5 to 5 percent of catalyst, 0 to 3 percent of fuel, 1 to 5 percent of retardant and 1 to 3 percent of binder; the heat generation layer includes: 60 to 70 percent of chlorate, 2 to 5 percent of perchlorate, 10 to 15 percent of catalyst, 5 to 15 percent of fuel and 10 to 15 percent of binder; the ignition layer includes: 1-3% of fuel, 90-95% of retardant, 2-5% of binder and 1-5% of chlorate; by adopting the high-efficiency catalyst, the decomposition temperature of the chlorate serving as the oxygen generating agent is reduced, and the side reaction is reduced; by adding the retardant, the decomposition rate of the oxygen candle is inhibited, the oxygen release rate is stable, the oxygen release time is prolonged, and the rated protection time is realized.

Description

Oxygen candle medicine
Technical Field
The invention belongs to the technical field of solid chemical oxygen source formulas, and relates to an oxygen candle medicament.
Background
In recent years, with the continuous improvement of solid chemical oxygen production technology, most of the oxygen sources of coal mine underground compressed oxygen are gradually replaced. The oxygen cylinder of compressed oxygen has heavy weight and high maintenance cost, belongs to a high-pressure container, and is not easy to store underground in a coal mine.
The solid chemical oxygen device is an emergency rescue device developed by the principle that oxygen-enriched chlorate or perchlorate generates oxygen through thermal decomposition under the action of a catalyst. The method is characterized in that: long storage time and small volume; the oxygen density is high and is 3-4 times of that of compressed oxygen with the same volume, and the large oxygen candle is stored and used under the normal pressure state without high pressure danger; in addition, the solid chemical oxygen device is maintenance-free, and the maintenance cost can be greatly reduced. Therefore, the solid chemical oxygen device is widely used as a lifesaving emergency oxygen source in the fields of refuge places, mines, aerospace, submarines, medical use, civilian use and the like.
However, in the current formula system of the solid chemical oxygen big oxygen candle at home and abroad, expensive dechlorinating agents are usually added, so that the formula is easy to absorb moisture, the oxygen release stability is poor, and the oxygen production speed of the big oxygen candle is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an oxygen candle medicament.
The purpose of the invention is realized by the following technical scheme:
the oxygen candle medicament comprises an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer;
the oxygen generation layer comprises the following raw materials in percentage by mass: 79 to 85 percent of chlorate, 0.5 to 8 percent of perchlorate, 1.5 to 5 percent of catalyst, 0 to 3 percent of fuel, 1 to 5 percent of retardant and 1.0 to 3 percent of binder;
the heating layer comprises the following raw materials in percentage by mass: 60 to 70 percent of chlorate, 2 to 5 percent of perchlorate, 10 to 15 percent of catalyst, 5 to 15 percent of fuel and 10 to 15 percent of binder;
the ignition layer comprises the following raw materials in percentage by mass: 1-3% of fuel, 90-95% of retardant, 2-5% of binder and 1-5% of chlorate.
Further, the catalyst is a composition of two or more of cobaltous oxide, cobaltosic oxide, manganese dioxide and ferric oxide.
Further, the fuel is composed of one or more of iron powder, titanium powder, magnesium powder, cobalt powder and manganese powder.
Further, the chlorate is sodium chlorate.
Further, the chlorate is potassium chlorate.
Furthermore, the binder is one or a composition of more than two of kaolin, ceramic fiber and diatomite, and the binder plays a role of a framework when the oxygen candle burns and absorbs heat to prevent heat loss.
Further, the perchlorate is one or a combination of two of potassium perchlorate and sodium perchlorate.
Furthermore, the retarder is chromate, and the chromate is one or a composition of more than two of sodium chromate, barium chromate and magnesium chromate, so that the oxygen release rate of the oxygen candle can be slowed, and the emergency rescue time can be prolonged.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: by adjusting the type and the proportion of the catalyst, the decomposition temperature of the chlorate serving as the oxygen generating agent is reduced, and side reactions are reduced, so that the content of halide is reduced, and the purity of the gas is improved; by adding a certain proportion of retardant, the decomposition and oxygen production rate of the big oxygen candle can be inhibited, the oxygen utilization rate is improved, and the emergency rescue time is prolonged; meanwhile, the added retardant is beneficial to the demoulding of the big oxygen candle tabletting; perchlorate in a certain proportion is added in the heating layer and the oxygen generating layer to be used as a stabilizer, so that the candle body is prevented from expanding when being heated and decomposed.
Detailed Description
The exemplary embodiments will be described herein in detail, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of formulations consistent with certain aspects of the present invention, as detailed in the appended claims.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention is further described in detail with reference to the following examples.
The dosage relation among the oxygen generating layer, the heating layer and the ignition layer can be determined according to the index requirements of oxygen production quantity, volume and the like of the oxygen candle product.
Example 1
The invention provides an oxygen candle medicament, which comprises an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer; the ignition layer comprises the following raw materials in percentage by mass: 3% of cobalt powder, 90% of barium chromate, 5% of kaolin and 2% of sodium chlorate; the heating layer comprises the following raw materials in percentage by mass: 65% sodium chlorate, 3% sodium perchlorate, 8% MnO23% CoO, 11% manganese powder and 10% kaolin; the oxygen generation layer comprises the following raw materials in percentage by mass: 79% sodium chlorate, 8% sodium perchlorate, 3% MnO2,1.5%Fe2O31.5% of manganese powder, 0.5% of cobalt powder, 5% of barium chromate and 1.5% of kaolin; the dosage and the proportion relation of the components of the oxygen candle medicament are shown in tables 1-3:
TABLE 1 ignition layer dosage and raw material proportioning relationship
Figure BDA0002376950480000041
TABLE 2 relationship between the amount of the heating layer and the ratio of the raw materials
Figure BDA0002376950480000042
TABLE 3 relationship between the amount of oxygen-generating layer and the ratio of each raw material
Figure BDA0002376950480000043
According to the materials and the proportion in tables 1-3, the oxygen generation layer, the heating layer and the ignition layer are sequentially added into a forming die, and the sheet is pressed under the pressure of 300T to prepare a large oxygen candle for testing, wherein the test results are shown in table 4:
Figure BDA0002376950480000044
tests prove that the big oxygen candle can completely react and start normally, and each technical index meets the AQ-1057 standard.
Example 2
The invention provides an oxygen candle medicament, which comprises an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer; the ignition layer comprises the following raw materials in percentage by mass: 3% of cobalt powder, 92% of barium chromate, 2% of kaolin and 3% of sodium chlorate; the heating layer comprises the following raw materials in percentage by mass: 65% sodium chlorate, 5% sodium perchlorate, 8% MnO27% CoO, 12% manganese powder and 3% kaolin; the oxygen generation layer comprises the following raw materials in percentage by mass: 82% sodium chlorate, 4.5% sodium perchlorate, 3% MnO2,2.0%Fe2O31.5% of manganese powder, 1.0% of cobalt powder, 3% of barium chromate and 3% of kaolin; the detailed relationship of the dosage and the proportion of the components of the oxygen candle medicament is shown in tables 5-7:
TABLE 5 amount of ignition layer and the ratio of each raw material
Figure BDA0002376950480000051
TABLE 6 relationship between the amount of the heating layer and the ratio of the raw materials
Figure BDA0002376950480000052
TABLE 7 dosage of oxygen-generating layer and the ratio relationship of each raw material
Figure BDA0002376950480000053
According to the materials and the proportion in tables 5 to 7, the oxygen generation layer, the heating layer and the ignition layer are sequentially added into a forming die, and the sheet is pressed under the pressure of 300T to prepare a large oxygen candle for testing, and the test results are shown in table 8:
Figure BDA0002376950480000061
tests prove that the big oxygen candle can completely react and start normally, and each technical index meets the AQ-1057 standard.
Example 3
The invention provides an oxygen candle medicament, which comprises an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer; the ignition layer comprises the following raw materials in percentage by mass: 3% of cobalt powder, 94% of barium chromate, 2% of kaolin and 1% of sodium chlorate; the heating layer comprises the following raw materials in percentage by mass: 70% sodium chlorate, 5% sodium perchlorate, 3% MnO27% CoO, 5% manganese powder and 10% kaolin; the oxygen generation layer comprises the following raw materials in percentage by mass: 85% sodium chlorate, 0.5% sodium perchlorate, 2% MnO2,2.0%Fe2O32.5% cobalt powder, 5% barium chromate and 3% kaolin; the detailed relationship of the dosage and the proportion of the components of the oxygen candle medicament is shown in tables 9-11:
TABLE 9 ignition layer dosage and raw material proportioning relationship
Figure BDA0002376950480000062
TABLE 10 relationship between the amount of heat-generating layer and the ratio of raw materials
Figure BDA0002376950480000063
Figure BDA0002376950480000071
TABLE 11 dosage of oxygen-generating layer and the ratio relationship of each raw material
Figure BDA0002376950480000072
According to the materials and the proportion in tables 9 to 11, the oxygen generation layer, the heating layer and the ignition layer are sequentially added into a forming die, and the sheet is pressed under the pressure of 300T to prepare a large oxygen candle for testing, and the test results are shown in table 12:
Figure BDA0002376950480000073
tests prove that the big oxygen candle can completely react and start normally, and each technical index meets the AQ-1057 standard.
Example 4
Based on the embodiments 1 to 3, the embodiment provides an oxygen candle medicament, and the ignition layer comprises the following raw materials in percentage by mass: 3% of cobalt powder, 92% of barium chromate, 2% of kaolin and 3% of sodium chlorate; the heating layer comprises the following raw materials in percentage by mass: 65% sodium chlorate, 5% sodium perchlorate, 8% MnO27% CoO, 12% manganese powder and 3% kaolin; the oxygen generation layer comprises the following raw materials in percentage by mass: 83% sodium chlorate, 5% sodium perchlorate, 3% MnO2,2.0%Fe2O31.5% cobalt powder, 1.5% manganese powder and 4% kaolin, barium chromate free and other forms of retardants; the dosage and the proportion relation of the components of the oxygen candle medicament are shown in tables 13-15:
TABLE 13 ignition layer dosage and raw material proportioning relationship
Figure BDA0002376950480000074
Figure BDA0002376950480000081
TABLE 14 relationship between the amount of heat-generating layer and the ratio of raw materials
Figure BDA0002376950480000082
TABLE 15 dosage of oxygen-generating layer and the ratio relationship of each raw material
Figure BDA0002376950480000083
According to the materials and the proportion in tables 13-15, the oxygen generation layer, the heating layer and the ignition layer are sequentially added into a forming die, and the sheet is pressed under the pressure of 300T to prepare a large oxygen candle for testing, and the test results are shown in table 16:
Figure BDA0002376950480000084
through experiments, the large oxygen candle provided by the embodiment can be completely reacted and normally started, the continuous oxygen supply time is shortened, the reaction temperature is higher, the side reactions are more, the content of harmful gases is correspondingly increased, and the purity of oxygen is reduced.
The above examples 1, 2, 3, 4 were prepared according to the following procedure: firstly, a certain amount of oxygen generating layer is added below a forming die cavity, secondly, the mixed heating layer is added, prepressing forming is carried out, and then, an ignition layer is added for forming and demoulding. Put the oxygen candle that the shaping is good at oven constant temperature for a certain time, equip into intact oxygen generating device, constant temperature for a certain time under the temperature of difference respectively, detect whether the oxygen candle can start smoothly.
In conclusion, the oxygen candle medicament provided by the invention adopts the high-efficiency catalyst, the decomposition temperature is lower than 200 ℃, the outlet temperature is lower than 50 ℃, no side reaction is caused, and the content of harmful gas is 0. The effective oxygen release is 38-41%; in addition, by adding a certain proportion of chromate as a retardant, the decomposition and oxygen production rate of the big oxygen candle can be inhibited, the oxygen release time is long, the oxygen is released stably, the oxygen utilization rate is improved, and the emergency rescue time is prolonged; the oxygen candle provided by the invention can efficiently generate oxygen, can be reliably started in any environment and has high oxygen density.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (9)

1. An oxygen candle medicament is characterized by comprising an ignition layer, a heating layer and an oxygen generation layer, wherein the heating layer is arranged between the ignition layer and the oxygen generation layer;
the oxygen generation layer comprises the following raw materials in percentage by mass: 79 to 85 percent of chlorate, 0.5 to 8 percent of perchlorate, 1.5 to 5 percent of catalyst, 0 to 3 percent of fuel, 1 to 5 percent of retardant and 1 to 3 percent of binder;
the heating layer comprises the following raw materials in percentage by mass: 60 to 70 percent of chlorate, 2 to 5 percent of perchlorate, 10 to 15 percent of catalyst, 5 to 15 percent of fuel and 10 to 15 percent of binder;
the ignition layer comprises the following raw materials in percentage by mass: 1-3% of fuel, 90-95% of retardant, 2-5% of binder and 1-5% of chlorate.
2. The oxygen candle drug according to claim 1, wherein the catalyst is a combination of two or more of cobaltous oxide, cobaltosic oxide, manganese dioxide and ferric oxide.
3. The oxygen candle drug according to claim 1, wherein the fuel is one or more of iron powder, titanium powder, magnesium powder, cobalt powder, and manganese powder.
4. Oxygen candle according to claim 1, characterized in that the chlorate is sodium chlorate.
5. Oxygen candle according to claim 1, characterized in that the chlorate is potassium chlorate.
6. The oxygen candle drug according to claim 1, wherein the binder is one or a combination of two or more of kaolin, ceramic fiber, and diatomaceous earth.
7. Oxygen candle drug according to claim 1, characterized in that the perchlorate is one or a combination of both potassium perchlorate and sodium perchlorate.
8. The oxygen candle drug of claim 1, wherein the retardant is chromate.
9. An oxygen candle drug according to claim 8, wherein the chromate is one or a combination of two or more of sodium chromate, barium chromate, magnesium chromate.
CN202010069539.8A 2020-01-21 2020-01-21 Oxygen candle medicine Pending CN111252738A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113800475A (en) * 2021-10-31 2021-12-17 中国船舶重工集团公司第七一八研究所 Oxygen production flux core of chemical oxygen generator for civil aviation and preparation method thereof
CN113860261A (en) * 2021-10-31 2021-12-31 中国船舶重工集团公司第七一八研究所 Chlorate oxygen production medicine core without adhesive and preparation method thereof

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US5298187A (en) * 1992-03-13 1994-03-29 Puritan-Bennett Corporation Non-toxic chemical oxygen generating compositions
CN103213948A (en) * 2012-12-12 2013-07-24 湖北航天化学技术研究所 Temperature-insensitive oxygen candle
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
CN108083234A (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 medicine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB795271A (en) * 1955-08-03 1958-05-21 Canadian Ind Delay compositions
US5298187A (en) * 1992-03-13 1994-03-29 Puritan-Bennett Corporation Non-toxic chemical oxygen generating compositions
CN1072390A (en) * 1992-12-18 1993-05-26 中国人民解放军军事医学科学院卫生装备研究所 Safe oxygen producing agent (solid oxygen)
CN103213948A (en) * 2012-12-12 2013-07-24 湖北航天化学技术研究所 Temperature-insensitive oxygen candle
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
CN108083234A (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 medicine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113800475A (en) * 2021-10-31 2021-12-17 中国船舶重工集团公司第七一八研究所 Oxygen production flux core of chemical oxygen generator for civil aviation and preparation method thereof
CN113860261A (en) * 2021-10-31 2021-12-31 中国船舶重工集团公司第七一八研究所 Chlorate oxygen production medicine core without adhesive and preparation method thereof
CN113860261B (en) * 2021-10-31 2023-08-11 中国船舶重工集团公司第七一八研究所 Adhesive-free chlorate oxygen production drug core and preparation method thereof
CN113800475B (en) * 2021-10-31 2024-01-23 中国船舶重工集团公司第七一八研究所 Oxygen production flux core of chemical oxygen generator for civil aviation and preparation method thereof

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Application publication date: 20200609