Hopper dryer for drying maleic anhydride

Abstract

The invention provides a hopper dryer for drying maleic anhydride. The hopper dryer is characterized by comprising a fan, an electric heating pipe, an electric control box, a temperature control gauge, a wind pipe, a chassis, a barrel and a hopper; the hopper is arranged below the barrel, is fixedly connected with the barrel through a hinge, and is connected with the wind pipe; the temperature control gauge is arranged on the wind pipe; the electric heating pipe is arranged between the wind pipe and the fan; the fan, the electric heating pipe and the temperature control gauge are controlled through the electric control box; and the hopper consists of an outer layer, an infrared radiation heating layer, an anti-electromagnetic shielding protection layer, a waterproof insulation layer and double electric leakage preventing protection layers in sequence from outside to inside. The hopper dryer is simple in structure and skillful in design, transfers hot wind to the dryer through an air blower, uses the infrared radiation heating layer for realizing uniform distribution of heat in whole space, can quickly dry maleic anhydride, and accelerates the industrial production speed.

Description

technical field [0001] The invention relates to a dryer, in particular to a hopper dryer for drying maleic anhydride. Background technique [0002] Maleic anhydride is also known as maleic anhydride and maleic anhydride, commonly known as maleic anhydride. It was first obtained from malic acid in 1834. Colorless crystalline powder. Has a strong pungent odor. Soluble in ethanol, ether and acetone, insoluble in petroleum ether and carbon tetrachloride. It reacts with hot water to form maleic acid, which is mainly used in the synthesis of dienes, the preparation of drugs, pesticides, dye intermediates and the production of organic acids such as polyester resins, alkyd resins, and maleic acid, and is also used as fat and oil preservatives etc. It has a wide range of uses and is a good intermediate for the synthesis of many types of substances. [0003] Maleic anhydride is a white flaky crystal with a strong pungent smell. It is also easy to sublime and deliquescence when it...

AI Technical Summary

Problems solved by technology

[0003] Maleic anhydride is a white flaky crystal with a strong pungent smell. It is also easy to sublime and deliquescence when it meets water to form maleic acid. Therefore, drying maleic anhydride is a very important production process, but the usual industrial production requires a large amount of production. , using a simple dryer, the supply of production volume is difficult to meet the market demand, using a traditional dryer, it is easy to cause the loss of the product during the drying process of the easily sublimated chemicals, which seriously affects the yield and benefit

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