Classification of the project: choose products: chemical engineering industry ZLG series vibrating fluidized bed drier Description of project: Pesticide water dispersible granule (WDG) is a new dosage form developed in the 1980 s. Because of its good security, the environmental pollution-free, possesses the advantages of traditional pesticide formulations, is considered to be an important direction of the development of the pesticide formulations. Water dispersible granule in domestic and overseas research progress on the auxiliaries, preparation methods, the development of granulation method has carried on the preliminary discussion. WDG will surely become a new generation of pesticide formulations in one of the most promising product. Water dispersible granule is the beginning of 1980 s in Europe and the United States developed a kind of new pesticide formulations, also known as dry suspension, the international federation of pesticide industry association (GIFAR) defines it as: use of granules after disintegration and dispersed in water. Water dispersible granule is mainly composed of pesticide active ingredients, dispersant, wetting agent, binder, disintegrating agent and the filler composition, particle size of 200 microns - 5 mm, into the water quickly after the disintegration, scattered, forming high suspended system.

Advantage:

Compared with EC, WDG can produce high concentration, without dissolve pesticide formulation.

, compared with those of WP WDG rarely even basic will not generate dust (use), thereby reducing the toxicity in the process of operation. The product will not flow, makes the measurement more convenient.

• compared with SC, WDG pack easily, this kind of treatment is more easy. Moreover, the product won't sink in.

Disadvantage:

The high cost of production

Higher cost, operation skills

1, pesticide WDG water dispersible granule production line adopts integration of crushing, mixing, granulating, drying, cooling, screening, packing section, in the form of function is clear, and the organic combination, plan as a whole. To process flow operation.

2, the core parts of the production line, drying system. With the method of segmented heating, predrying section make use of high pressure low fan, the relatively wet WDG particles can fully fluidization; Drying section adopts low-voltage high air volume of fan, per unit time away moisture, dry evenly; Use high air volume fan cooling period, can quickly take away heat, decrease the temperature of products, both reached the requirements of water control, and convenient follow-up packaging process.

3, drying medium circulation system: fan, heater, ventilation pipe made of stainless steel to avoid products contaminated by unclean wind.

4, dry host between upper and lower bed body adopts quick open structure, changed the traditional structure in the form of bolted connections, greatly convenient system thoroughly clean.

5, the spread of bed board material groove adopts modular structure, recently adopted tongue hole, can make the material flow of moving forward and do not produce material leakage phenomenon; In the back-end USES the straight hole, hot air penetration rate higher, drying process of heat exchange more fully.

6, the bed body is made of stainless steel seamless steel pipe support, bed body structure, long service life.

7, the bed body made of full stainless steel welding inside cleared the sewage into the insulation layer, avoid to affect the product quality, and also has a clean mouth, convenient cleaning equipment.

8, the system also equipped with the aspiration of the crushing machine, high-speed mixer, material conveying unit, packaging equipment units, etc. This production line efficiently combination, general appearance, stable performance and recognized by the industry veteran.