Hydrazine-based material tray dryer

Hydrazine, also known as 4-methyl-2-hydrazinebenzothiazole, is an important intermediate of tricyclazole, a fungicide, with a melting point of 168℃~169℃. Tricyclazole is a highly efficient systemic fungicide with high biological activity and a unique mechanism of action. It is particularly effective in preventing and controlling rice blast. Field experiments in many countries have shown that the drug has a prevention effect of 80%-90%, making it an ideal agent for preventing and controlling rice blast. The mechanism of action of tricyclazole is to inhibit the formation of spores, and to prevent the expansion and spore production of lesions, thereby inhibiting reinfection. As domestic and foreign users continue to improve the quality requirements of tricyclazole fungicide original drugs, high-quality hydrazine must be obtained in industrial production.

The hydrazine-based disc continuous dryer is a highly efficient conductive continuous drying equipment. Its unique structure and working principle determine that it has the characteristics of high thermal efficiency, low energy consumption, small footprint, simple configuration, convenient operation and control, and good operating environment.

During the drying of hydrazine-based materials, the wet hydrazine-based materials are continuously added from the feeder to the drying plate on the upper layer of the dryer, and the rake arm with rakes rotates to make the rakes continuously turn over the wet hydrazine-based materials. The hydrazine-based materials flow over the surface of the drying plate along the exponential spiral line. The hydrazine-based materials on the small drying plate are moved to the outer edge and fall from the outer edge to the outer edge of the large drying plate below. The materials on the large drying plate move inward and fall from the middle drop port into the small drying plate of the next layer. The large and small drying plates are arranged alternately up and down, and the hydrazine-based materials can flow continuously through the entire dryer.

The heating medium is introduced into the hollow drying plate. The heating medium is in the form of saturated steam, hot water, heat transfer oil and high-temperature molten salt. The heating medium enters from one end of the drying plate and is discharged from the other end. The dried hydrazine base falls from the drying plate of the next layer to the collecting plate and is moved to the discharge port by the rakes for discharge. The moisture overflows from the hydrazine base and is discharged from the moisture discharge port set on the top cover. The dry materials discharged from the bottom layer can be directly packaged.