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The reaction synthesis section in the chemical production process generates a large amount of high-temperature powder materials, which poses great difficulties in storage, packaging, and transportation. Therefore, it is necessary to cool them to room temperature or a lower safe temperature. For example, cooling emulsion explosives, NaOH, Na₂CO₃, NaHCO₃, etc.
The spiral heat exchanger has a double flow channel composed of two concentric spiral lines. The double flow channels do not interfere with each other, and the medium is in a completely counter-flow state in the flow channel. Thermal fluid generally enters from the central axis, flows from the inside to the outside, and flows out from the sides. The cold fluid enters from the outside of the side and flows inward toward the central axis to achieve counterflow. This method can achieve higher heat transfer coefficients than other types of heat exchangers. Easier to achieve temperature exchange.
The introduction of the US Plexi Tungsten Carbide Supersonic Spraying Device for spraying the outer surface of the dryer blade and the inner surface of the shell. Firstly, melt the surface of the metal using high-pressure liquid oxygen, aviation kerosene, propylene oxide and other high-temperature media. Then, nitrogen subsonic spraying of tungsten carbide onto the molten metal surface is used to achieve secondary fusion of the metal surface. This technology not only improves the wear resistance of the metal surface, but also extends the service life of the dryer by more than 15 years.
The buried scraper conveyor device is divided into two types: Z-type scraper conveyor and horizontal scraper conveyor. Designed and manufactured based on the complete mapping of the scraper imported by the Japanese company Tsubaki, it uses two guide chains installed inside a closed shell to transport objects horizontally or vertically. It can transport not only ordinary powders, sludge and granular bodies, but also objects that are not easy to transport and objects with strong adhesion. Materials used: SUS304 stainless steel shell and scraper, 2Cr13 high-strength chain, HRC=45±5.
Experts and Pioneers of Sludge Drying And Pyrolysis Field in China.
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