Aluminum-based self-heating agent self-heating device at extreme low temperature and its application

A self-heating, exothermic agent technology, applied in heating devices, heat exchange materials, chemical instruments and methods, etc., can solve problems such as difficult start, slow heat release, and inability to start exothermic agents, and achieve the effect of avoiding explosions

Active Publication Date: 2020-12-22
INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aluminum-based heating agents are difficult to start in low temperature environments (<10°C), and the heat release is slow; under extremely low temperature conditions, such as minus 30°C, water and food are frozen, the heating agent cannot be started, and the food cannot be heated through. Seriously affect the heating effect of aluminum-based self-heating agents in low-temperature environments such as winter and plateau
[0004] Existing aluminum-based exothermic agents are difficult to start in low temperature environments (<10°C), do not start at extreme low temperatures (-30°C), and have low heat release efficiency, which limits their application, and also poses a threat to outdoor travel or field work in alpine regions. Inconvenience

Method used

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  • Aluminum-based self-heating agent self-heating device at extreme low temperature and its application
  • Aluminum-based self-heating agent self-heating device at extreme low temperature and its application
  • Aluminum-based self-heating agent self-heating device at extreme low temperature and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A self-heating device for an aluminum-based self-heating agent at extremely low temperatures, including antifreeze lye, a low-temperature heating agent, and an aluminum-based heating agent;

[0045] In this embodiment, the antifreeze lye is 5 mL in total, containing the following solutes in mass percent: 15% sodium chloride, 5% magnesium chloride, and 10% sodium hydroxide.

[0046] The low-temperature heating agent is 5 g in total, containing the following components in mass proportion: 50% of aluminum powder, 10% of iron powder, 10% of magnesium powder, 10% of carbon powder, 10% of calcium oxide and 10% of sodium carbonate, the particle diameter of aluminum powder 200-300μm.

[0047] The aluminum-based heating agent is 40g in total, and the mass ratio of each component is: 40% of aluminum powder, 30% of quicklime, 20% of sodium carbonate, and 10% of zeolite, wherein the particle size of the aluminum powder is between 300-600 μm.

[0048] see figure 1 with figure 2 ...

Embodiment 2

[0055] A self-heating device for an aluminum-based self-heating agent at extremely low temperatures, including antifreeze lye, a low-temperature heating agent, and an aluminum-based heating agent;

[0056] In this embodiment, the antifreeze lye is 5 mL in total, containing the following solutes in mass percent: 10% sodium chloride, 5% magnesium chloride, and 5% potassium hydroxide.

[0057] The low-temperature heating agent is 5g in total, and contains the following components in mass proportion: 50% of aluminum powder, 10% of iron powder, 5% of magnesium powder, 5% of carbon powder, and 30% of calcium oxide. The particle size of the aluminum powder is 200-300 μm.

[0058] The aluminum-based heating agent is 40g in total, and its ingredients are: 40% of aluminum powder, 20% of quicklime, 10% of sodium carbonate, and 10% of zeolite, wherein the particle size of the aluminum powder is between 300-600 μm.

[0059] The structure of this device is basically the same as that of Emb...

Embodiment 3

[0061] A self-heating device for an aluminum-based self-heating agent at extremely low temperatures, including antifreeze lye, a low-temperature heating agent, and an aluminum-based heating agent;

[0062] In this embodiment, the antifreeze lye is 5 mL in total, containing the following solutes in mass percent: 10% sodium chloride, 5% magnesium chloride, and 10% sodium hydroxide.

[0063] The low-temperature heating agent is 5 g in total, and contains the following components in mass proportion: 50% of aluminum powder, 10% of iron powder, 5% of magnesium powder, 15% of carbon powder, and 20% of calcium oxide. The particle size of the aluminum powder is 200-300 μm.

[0064] The aluminum-based heating agent is 40g in total, and its ingredients are: 40% of aluminum powder, 30% of quicklime, 20% of sodium carbonate, and 10% of zeolite, wherein the particle size of the aluminum powder is between 300-600 μm.

[0065] The structure of this device is the same as embodiment 1.

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Abstract

The invention provides an extremely-low-temperature self-heating device of an aluminum-based self-heating agent. The extremely-low-temperature self-heating device comprises the aluminum-based heatingagent, anti-freezing lye which is packaged individually and a low-temperature heating agent which is packaged individually, wherein the low-temperature heating agent comprises aluminum powder, iron powder, magnesium powder, carbon powder, calcium oxide and sodium carbonate; the anti-freezing lye contains 5-15% of sodium chloride, 1-10% of magnesium chloride, 5-20% of sodium hydroxide, 0-20% of potassium hydroxide, 0-20% of magnesium chloride and 0-20% of sodium nitrite; the volume mass ratio of the anti-freezing lye to the low-temperature heating agent to the aluminum-based heating agent is (3-6 mL):5 g:(20-100 g). The invention further provides an application method of extremely-low-temperature self-heating device of the aluminum-based self-heating agent. The device can react at the low temperature of -10 DEG C, even at the extremely low temperature of -30 DEG C, a high-temperature hot spot is quickly generated, and the heating function of instantaneous high temperature is achieved; meanwhile, liquid is quickly vaporized and discharged, and the situation that the temperature is further raised to cause blast is avoided.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a heating device capable of automatically generating heat. Background technique [0002] Self-heating food heating agent is a new type of heating agent that uses metal, non-metal or chemical materials as raw materials to generate heat through physical or chemical principles, and can heat food or water through simple activation. It is widely used in military instant heating Food heating, mountaineering tourism and emergency protection for emergencies. my country began the development of self-heating food heating agents in the 1980s, and successively developed products based on quicklime, aluminum-water reaction system, and magnesium-water reaction system. Quicklime heating agent has been eliminated due to uncontrolled heat release and low calorific value. Aluminum water reaction system and magnesium water reaction system are the types of heat agents widely us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47J36/28C09K5/16
CPCA47J36/28C09K5/16
Inventor 张良张泓张春江黄峰胡宏海刘倩楠田芳张娜娜刘伟魏文松
Owner INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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