Desiccants refer to substances that can remove moisture from wet substances, and are often divided into two categories: chemical desiccants, such as calcium sulfate and calcium chloride, which are dried by combining with water to form hydrates; Physical desiccants, such as silica gel and activated alumina, are dried by physically adsorbing water.

The control of moisture is closely related to the yield of products. As far as food is concerned, under proper temperature and humidity, bacteria and molds in food will multiply at an alarming rate, which will make food rot and cause moisture and discoloration. Electronic products will also cause metal oxidation due to high humidity, resulting in defective products. The use of desiccant is to avoid the occurrence of defective products caused by excess water.

Desiccant, also called absorbent, is used to prevent moisture and mildew and plays a drying role. Desiccants for removing water vapor by adsorption include silica gel, alumina gel, molecular sieve, activated carbon, bone charcoal, charcoal, mineral desiccant, or activated clay. The commonly used adsorbents for removing water vapor by chemical absorption include calcium chloride, quicklime or phosphorus pentoxide, etc., which have great chemical affinity with water vapor. Absorbent is a kind of water-removing agent that absorbs moisture from the atmosphere. Its drying principle is to absorb water molecules in its own structure by physical means or to change its chemical structure by chemical means and become another substance.

Desiccant is a kind of water-removing agent that absorbs moisture from the atmosphere. Its drying principle is to absorb water molecules in its own structure by physical means or to change its chemical structure by chemical means and become another substance. Desiccant is also called dehumidifier. It is a solid material that can adsorb or chemically absorb water vapor.

Desiccant is suitable for preventing instruments, meters, electrical equipment, medicines, food, textiles and other various packaging items from getting wet. Desiccant is also widely used in sea transportation, because goods often get wet and deteriorate due to high temperature during transportation. Desiccant can effectively remove moisture and prevent moisture, so that the quality of goods can be guaranteed.

1. Desiccant is used for moistureproof of bottled medicines and foods. Ensure the dryness of the contents and prevent the growth of various miscellaneous molds.

2, desiccant can be used as a general packaging desiccant for moisture.

3. Desiccant can be conveniently placed in the packaging of various articles (such as instruments, electronic products, leather, shoes, clothing, food, medicines and household appliances, etc.) to prevent articles from being mildewed or rusted by moisture.

With the country's attention to environmental protection, the application of desiccant will bring both economic and social benefits, and it will be more widely used, and the development prospect of desiccant is very broad. China's desiccant sub-industry is also very mature. Among all desiccant types, silica gel is an environmentally friendly and safe desiccant. Li Ying Da silica gel desiccant is insoluble in water and all organic solvents, non-toxic, tasteless and stable in physical properties. The desiccant does not react with all chemicals except strong acid and hydrochloric acid. In addition, silica gel is the only desiccant that can directly contact drugs and food according to the British FDA certification.

According to reports, all desiccants will reach an adsorption balance with the external environment at a certain temperature. If the temperature changes, the desiccants will further release or absorb water, thus achieving a new adsorption balance. Usually, when the temperature increases, the desiccants will release water, and when the temperature decreases, the desiccants will absorb water. In insulating glass, when the temperature changes, the desiccant of insulating glass will also release and absorb water accordingly. For the desiccant with weak deep drying ability, the adsorption balance changes greatly with the temperature. For the desiccant with strong deep drying ability,

In the past, China's desiccant technology was relatively backward, and the production efficiency was low. The quality and output of desiccant products could not meet the requirements of users. In recent years, with the development of science and technology, the domestic desiccant technology has been significantly improved, which can meet the needs of some desiccant enterprises. However, compared with foreign desiccant equipment, the technical level of desiccant in China needs to be improved urgently.

The market scale of desiccant reached 21.523 billion yuan, up 15.26% year-on-year. Combined with the macroeconomic situation and the development trend of the industry, it is estimated that the annual growth rate of desiccant market will be 11%, and the market size of calcium hydroxide in China will reach 40.2 billion yuan.

The data of this article comes from: 2022-2026 desiccant market research report.