High efficiency heating agent for heating food and its preparation method

A heat-generating agent and high-efficiency technology, applied in the field of food heating, can solve the problems of short reaction time and heat preservation duration, insufficient heating of food, decrease in heating efficiency, etc., to prolong market circulation time, long reaction duration, and improve competition force effect

Inactive Publication Date: 2008-05-14
牛凤娟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of heat-generating bag mainly composed of quicklime (CaO) has short reaction time and heat preservation duration. When heating, the temperature drops sharply, which cannot fully heat the food. Moreover, quicklime (CaO) easily absorbs the moisture in the air. moisture
In the state of absorbing more than 80% of the moisture in the air, long-term storage will easily cause oxidation reaction, thereby greatly reducing the heat generated by the hydration reaction, and the extension of the start time of the hydration reaction will also bring about a decline in heating efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 20g of the exothermic agent of the present invention (among them: 8.4 grams of aluminum powder, 5.6 grams of calcium carbonate, 3 grams of calcium hydroxide, 2.4 grams of sodium bicarbonate, and 0.6 grams of sodium hydroxide, stir the above-mentioned components evenly, and put them into the non-woven fabric Just seal the bag. Put 300g of retort pouch liquid food into a plastic bag, pour 40g of water into the plastic bag, and measure the heating agent combination in units of one minute within 25 minutes. external temperature of the food, and after 25 minutes, check the temperature of the liquid food.

[0030] Test results, such as the data in the following test result table, the temperature of the exothermic agent gradually increased in the first 13 minutes, and in the next 12 minutes, the temperature remained at a high temperature of 90 degrees. Finally, the temperature of the liquid food was detected and reached 82 degrees. The liquid food is fully heated, which ...

Embodiment 2

[0035] 6 grams of quicklime (CaO), 10 grams of aluminum powder (AI), 1 gram of sodium hydroxide (NaOH), 2 grams of inorganic salt (sodium chloride or silicon dioxide), and 1 gram of diatomaceous earth are used to circulate on the market. Put 20g of the heating agent composition as the main ingredient and liquid food packaged in a retort pouch weighing 300g together in a plastic bag, and pour 40g of water into the plastic bag, and measure the heating agent in units of one minute within 25 minutes The external temperature of the composition, and after 25 minutes, check the temperature of the liquid food.

[0036] The experimental results show that the temperature gradually increased in the first 6 minutes, and the temperature remained at 90 degrees from the 6th minute to the 12th minute for about 7 minutes, and the temperature gradually decreased from the 13th minute to the 25th minute. The final detection temperature of liquid food is 76 degrees. It shows that the heating agen...

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PUM

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Abstract

The present invention relates to one kind of heat generating agent capable of producing heat by means of chemical reaction to heat packed food and its preparation process. The heat generating agent consists of powdered aluminum, calcium carbonate, calcium hydroxide, sodium bicarbonate or sodium carbonate and sodium hydroxide. The present invention has the advantages of long reaction duration, capability of heating food to 90 deg.c, environment friendship, etc.

Description

technical field [0001] The present invention relates to a way of heating food, in particular to a heating agent for heating retort pouch by utilizing chemical reaction to generate heat and a preparation method thereof. Background technique [0002] There is a kind of food on the market that is vacuum-packed through high-pressure cooking, such as retortpouch food, military food, and convenient food for carrying. Although this food has been cooked, it still needs to be eaten after being heated with gas or microwave oven. It is very inconvenient to heat this kind of food when we are in the wild. In order to heat this kind of food easily, a kind of heating food heating bag has appeared on the market now. The heating material of this heating bag is mainly composed of quicklime (CaO), aluminum powder (Al), sodium hydroxide (NaOH), inorganic salts (NaCl, SiO 2 ) as the main component. A small amount of water is added to this kind of heating bag, and then, the heat generated by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/18
Inventor 牛凤娟
Owner 牛凤娟
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