Method of improving heating efficiency of calcium oxide heat source in self-heating food

A technology of heating efficiency and calcium oxide, which is applied in food heating containers, packaged foods, and types of packaged items. It can solve problems such as high initial reaction temperature, potential safety hazards, and fast attenuation, and achieve improved heat production rate, safe and convenient use, and The effect of storage stability

Inactive Publication Date: 2020-03-24
安徽省三车节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has abundant sources and low price, and once became the most popular heat source. However, with the exposure of its disadvantages, including low heat production per unit dose, large dosage, high initial reaction temperature, fast decay, and potential safety hazards during use And other problems, gradually replaced by other heat source materials

Method used

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  • Method of improving heating efficiency of calcium oxide heat source in self-heating food

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for improving the heating efficiency of calcium oxide heat sources in self-heating food, the preferred solution is to use the prepared nano-scale coating agent to coat calcium oxide powder, changing the physical and chemical properties of calcium oxide, reducing Heat loss, optimize the heat transfer rate, and calcinate the prepared coated calcium oxide to further form a modified calcium oxide heat source;

[0018] Specifically, the following steps are included:

[0019] S1: Preparation of coating agent: Weigh 16.5 grams of silicon dioxide and 11.0 grams of graphite oxide and place them in a mortar, grind and mix evenly, and put the mixed grinding materials in a beaker, and add 100-110 ml of ultrapure water into the beaker , ultrasonically disperse for 10 minutes, add 9 ml of hydrochloric acid with a molar concentration of 6.0 mol / liter dropwise under stirring, then place it in a water bath at 60°C, and add 4.50 ml of aqueous hydrogen peroxide solution with a ma...

Embodiment 2

[0022] A method for improving the heating efficiency of calcium oxide heat sources in self-heating food, the preferred solution is to use the prepared nano-scale coating agent to coat calcium oxide powder, changing the physical and chemical properties of calcium oxide, reducing Heat loss, optimize the heat transfer rate, and calcinate the prepared coated calcium oxide to further form a modified calcium oxide heat source;

[0023] Specifically, the following steps are included:

[0024] S1: Preparation of coating agent: Weigh 16.8 grams of silicon dioxide and 11.5 grams of graphite oxide and place them in a mortar, grind and mix them evenly, and put the mixed grinding materials in a beaker, add 105 milliliters of ultrapure water into the beaker, and ultrasonically Disperse for 12 minutes, add 10 ml of hydrochloric acid with a molar concentration of 6.2 mol / liter drop by drop under stirring, then place it in a water bath at 65°C, add 4.8 ml of aqueous hydrogen peroxide solution ...

Embodiment 3

[0027] A method for improving the heating efficiency of calcium oxide heat sources in self-heating food, the preferred solution is to use the prepared nano-scale coating agent to coat calcium oxide powder, changing the physical and chemical properties of calcium oxide, reducing Heat loss, optimize the heat transfer rate, and calcinate the prepared coated calcium oxide to further form a modified calcium oxide heat source;

[0028] Specifically, the following steps are included:

[0029] S1: Preparation of coating agent: Weigh 17.0 grams of silicon dioxide and 13.0 grams of graphite oxide, place them in a mortar, grind and mix them evenly, and put the mixed grinding materials in a beaker, add 110 milliliters of ultrapure water into the beaker, and ultrasonically Disperse for 15 minutes, add 12 ml of hydrochloric acid with a molar concentration of 6.5 mol / liter drop by drop under stirring, then place it in a 70°C water bath, add 5.0 ml of a 30% aqueous hydrogen peroxide solution ...

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Abstract

The invention relates to the technical field of novel material processing and discloses a method of improving heating efficiency of a calcium oxide heat source in self-heating food. By coating calciumoxide powder with a nanoscale coating agent prepared, the physical and chemical characteristics of calcium oxide are changed, the heat loss is reduced and the heat transfer rate is optimized. The prepared coated calcium oxide is calcined to further form the modified calcium oxide heat source, so that the heat generating rate and the heat generating efficiency of calcium oxide are improved obviously, the heat loss in a heating process of a reaction can be reduced, and the safety and heating efficiency of calcium oxide are improved. The method can improve the heating efficiency of the calcium oxide heat source obviously, heat is generated stably, and the quantity of released heat of a heat source material in unit mass is increased by 2-3 times. The heat source material is unlikely to be affected with damp to deteriorate, is uniform to heat, and needs not to be overturned in a using process, so that the problem that an existing calcium oxide heat source is large in use level, small in produced heat in unit dosage and non-uniform in heating degree.

Description

technical field [0001] The invention belongs to the technical field of new material processing, and in particular relates to a method for improving the heating efficiency of a calcium oxide heat source in self-heating food. Background technique [0002] The reason why convenience food is popular with consumers is that it is convenient to eat, tastes good, and saves time. Traditional convenience food is cold food. To obtain a better taste, it needs to be heated , therefore, there are still many inconveniences. With the advancement of science and technology, more and more conveniences have been brought to people's life. The food processing industry is also quietly changing. Wherein self-heating food is subject to liking of people because of its rapid heating and convenient advantage. [0003] The many advantages of self-heating food have expanded its sales space and become the first choice for people in all walks of life. Generally, self-heating technology mainly includes ...

Claims

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Application Information

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IPC IPC(8): B65D81/34
CPCB65D81/3484
Inventor 张艳秋
Owner 安徽省三车节能科技有限公司
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