Preparation method of self-heating food heating agent

A heating agent and food technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of affecting heating efficiency, long production cycle, and low heat output per unit, so as to simplify the production process, shorten the processing time, and unit The effect of high calorific value

Active Publication Date: 2014-01-01
NO 8511 RES INST OF CASIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of heat agent has been widely used due to the low cost of raw materials, but due to its low unit calorific value, uncontrollable heat generation rate, and easy damp failure, it has gradually withdrawn from the market
[0004] 2. Aluminum water system: At present, this type of heating agent is mainly used in the domestic market. The principle is basically the same, but the processing technology of each company is different, resulting in uneven heating effects.
The shortcomings of the current production process are: most of them are processed by ball milling process, the production cycle is long and the production process is complicated; the material is seriously deformed, which affects the heating efficiency, and the output is low and the cost is high
It has the characteristics of magnesium water system heat agent, but it has many components, low unit heat production, complex production process, high output and low cost, and cannot meet the needs of large-scale production

Method used

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  • Preparation method of self-heating food heating agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The components and weight percentages of a self-heating food heating agent: 65% magnesium powder, 25% iron powder, and 10% surfactant.

[0021] Weigh the materials according to the proportion and pour them into the surface modification equipment. The equipment speed is set to 100 rpm and the processing time is 2 minutes to make the materials evenly mixed and dispersed. Inert gas is introduced into the surface modification equipment, the material heating device is turned on, the material temperature is raised to 60°C, the equipment speed is adjusted to 500 rpm, and the surface modification treatment is performed. The processing time is 5 minutes. Liquid nitrogen is introduced into the surface modification equipment for rapid cooling, and the material can be discharged after the temperature drops to room temperature.

[0022] Take 10 g of the food heating agent to conduct a heating test on 250 g of rice dumplings. The time required from adding the reaction water to heating of...

Embodiment 2

[0024] The components and weight percentages of a self-heating food heating agent: 75% magnesium powder, 20% iron powder, and 5% surfactant.

[0025] Weigh the materials according to the proportion and pour them into the surface modification equipment. The equipment speed is set to 100 rpm and the processing time is 2 minutes to make the materials evenly mixed and dispersed. Inert gas is introduced into the surface modification equipment, the material heating device is turned on, the material temperature is raised to 60-80°C, the equipment speed is adjusted to 500 rpm, and the surface modification treatment is performed. The processing time is 5 minutes. Liquid nitrogen is introduced into the surface modification equipment for rapid cooling, and the material can be discharged after the temperature drops to room temperature.

[0026] Take 10 g of the food heating agent to conduct a heating test on 250 g of rice dumplings. The time required from adding the reaction water to heating ...

Embodiment 3

[0028] The components and weight percentages of a self-heating food heating agent: 78% magnesium powder, 17% iron powder, and 5% surfactant.

[0029] Weigh the materials according to the proportion and pour them into the surface modification equipment. The equipment speed is set to 150 rpm and the processing time is 2 minutes to make the materials evenly mixed and dispersed. Inert gas is introduced into the surface modification equipment, the material heating device is turned on, the material temperature is increased to 60-80°C, the equipment speed is adjusted to 400 rpm, and the surface modification treatment is performed. The processing time is 5 minutes. Liquid nitrogen is introduced into the surface modification equipment for rapid cooling, and the material can be discharged after the temperature drops to room temperature.

[0030] Take 10 g of the food heating agent to conduct a heating test on 250 g of rice dumplings. The time required from adding the reaction water to heati...

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Abstract

The invention relates to a self-heating food heating agent and a preparation method of the self-heating food heating agent; the self-heating food heating agent comprises main components of magnesium powder, iron powder and surface active agent; the preparation method comprises the step of utilizing an effective surface modification technology, leading the magnesium powder and the iron powder to form stable Mg-Fe alloy under the condition that the shapes of magnesium powder particles are not changed so as to form the heating agent. The heating agent not only has the characteristics of high heat efficiency and less dosage of a Mg-Fe system, and is mainly simple in processing technology, high in yield, low in production cost and suitable for the demand of large-scale batch production; and the heating agent is light to carry, and can be used for heating various foods under the condition of no heat source and combustion source.

Description

Technical field [0001] The invention belongs to the field of chemical heating materials, in particular to a preparation method of a self-heating food heating agent. Background technique [0002] Food self-heating agents require fast start-up speed, high heating efficiency, simple use, small size, light weight, and safety and environmental protection. At present, there are various self-heating technologies at home and abroad that can meet the above requirements and achieve large-scale production, which can be roughly divided into the following categories: [0003] 1. Quicklime: US Patent 6.289.889 discloses a self-heating agent using quicklime as the main raw material. Calcium hydroxide Ca(OH) 2 is generated by the reaction of quicklime CaO with water and a large amount of heat is released. Such thermal agents are used in large quantities due to low raw materials, but due to their low unit heat generation, the heat generation speed cannot be controlled, and they are prone to damp ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/18B22F1/00C22C23/00
Inventor 肖蓉李子繁孙红旗王璐
Owner NO 8511 RES INST OF CASIC
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