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The reason why calcium chloride desiccant produces heat energy when absorbing moisture

Release time:

2022-04-19

Desiccant is used more and more frequently in our life, basically everywhere in our life. So do different types of desiccant have some chemical changes when they are used? The following we explain why calcium chloride desiccant in the use of the process of heating.

The reason why calcium chloride desiccant heat up in the process of moisture absorption is that it has a chemical reaction with the moisture in the air. As long as the desiccant is in the process of water absorption, it will have a chemical reaction to release a certain heat source, so the calcium chloride desiccant will have some heat when it is contacted in this process. And there are two kinds of chemical reactions in our nature, is an endothermic reaction (cannot spontaneously, needs to have a heating device), one kind is exothermic desiccant bibulous, when chemical reaction happened will release heat, such a phenomenon is a slow reaction process, the heat will be gradually released, So when the calcium chloride desiccant is working to absorb moisture, it is always hot. As long as the desiccant is still in the period of validity, calcium chloride desiccant is due to long-term hygroscopicity, when the desiccant work so the heat will gradually be carried out.

In the effective period of calcium chloride desiccant or other types of desiccant when the adsorption of wet gas itself will appear a certain chemical reaction, produce a certain amount of heat energy. General calcium chloride desiccant stability is better even if it produce heat that is in the safe range, so we can use it