What is the role of microwave drying equipment in the chemical industry

Microwave chemical drying equipment microwave heating is very different from traditional heating methods. The traditional heating method relies on a heat source to first heat the surface of the object through radiation, conduction, and convection, and then heat conduction to increase the internal temperature. Gradually increase from the outside to the inside. The heat transfer speed in most objects is very slow, such as rubber materials, so it takes a long time to heat the entire object.

1. Dry. It is an area where microwave energy is widely used. For example, it is mainly used for drying chemical products such as nickel hydroxide, zirconium oxide, lithium cobalt oxide, cobalt oxide, bismuth oxide, nickel oxide, silicon oxide, antimony oxide, manganese carbonate, etc. The drying speed is much faster than traditional methods More energy saving.

2. Reduction and sintering (combustion synthesis). Compared with traditional sintering methods, microwave reduction and sintering have the advantages of faster speed, higher efficiency and better uniformity.

3. Microwave is used in synthetic chemistry. Under microwave irradiation, the reaction time of products such as esterification, hydrolysis, oxidation, nucleophilic substitution reaction can be greatly shortened and the yield can be improved. For example, diphenyl glycolate compounds are important intermediates in the synthesis of drugs. The traditional method requires 4H reflux of p-diphenyl glycolic acid and low-carbon fatty alcohol to obtain esters with a certain yield. By microwave irradiation, the reaction is completed in only 10 minutes.

Easy to operate and suitable for control. Microwave heating can instantly achieve the purpose of lifting, start and stop, and the thermal inertia is very small. The application of PLC and touch control screen is particularly suitable for heating process and heating process specification and automatic control.