What Is the Principle of Dehumidification of Calcium Chloride?

Calcium chloride dehumidifier bag principle

1. At present, the commonly used material of moisture-proof dehumidifier, its chemical composition is currently calcium chloride and silica gel as the main raw material. Calcium chloride is a white crystal that will be deliquescent, with granular, blocky or flaky structure; it is highly hygroscopic, adsorbing moisture in liquid form. This kind of hygroscopic box is covered with a layer of film, the middle layer is hygroscopic agent, and the bottom layer is water storage layer.

2. When the hygroscopic agent absorbs the moisture in the cabinet air, it will turn into liquid flow to the bottom layer, at first when the hygroscopic agent is still high concentration, hygroscopicity fast, once the humidity of the space down to a certain degree, the rate of hygroscopicity will be slowed down, if the environment of the humidity has not been increased, hygroscopicity life will be elongated. Unit volume of water molecular weight and the movement of collision rate, for example, if the moisture in the cabinet from 90% down to 60%, the hygroscopic agent may have been consumed by about half, but then the water molecules in the air in the cabinet is also less than 30% of the water molecules, water molecules flow and collision, through the film and the hygroscopic agent reaction rate becomes less.

  Calcium chloride is used as the principle of dehumidification: relying on the strong hygroscopicity of calcium chloride, adsorption of water molecules in the air, reduce the humidity in the air.

Uses: Calcium chloride has a wide range of uses, industrial grade calcium chloride can be used for oil drilling, desiccant, snow melting agent, refrigerant, coagulant and so on. Food grade calcium chloride is mostly used as food additives, which can play a role in solidification, freshness, thickening, nutrition and other effects.

  Calcium chloride aqueous solution is an important cooling agent for freezers and ice making, it can accelerate the hardening of concrete and increase the cold resistance of construction mortar, it is an excellent antifreeze agent for construction. It is used as anti-fogging agent for harbor and dust collecting agent for road surface, and fireproofing agent for fabric.

  Calcium chloride is porous block solid particles. By adsorption of active static damping and odor to remove moisture and odor and other effects. The adsorption process is a physical reaction. Calcium chloride physical properties are utilized.

  The main raw material of calcium chloride desiccant is calcium chloride, which is refined by reaction synthesis, filtration, evaporation and concentration, drying and other processes using calcium carbonate and hydrochloric acid as raw materials.

  Calcium chloride is mostly white porous block, granular or honeycomb solid. Slightly bitter taste, odorless. Aqueous solution is colorless. Mainly used as raw material for inorganic chemical production of other calcium salts; also used as a gas drier, used as calcium fortifier, curing agent, chelating agent, desiccant, etc. in the food industry. Calcium chloride desiccant has the efficacy of adsorption active static damping and odor removal. Not only fast adsorption speed, high adsorption capacity, odorless, no contact corrosiveness, no environmental pollution, widely used in oil seals, optical medical, health food.

From http://www.jiuchongchem.com/.

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