Salty wastewater refers to wastewater with a total salt content of at least 1%, mainly from chemical plants and the collection and processing of oil and gas. With the acceleration of industrial production, salty wastewater is produced in a wide range of ways and the amount of water is increasing year by year. Removing the impact of organic pollutants in salty wastewater on the environment is crucial and has become a focus of research at home and abroad. Under this environmental trend, a special spray dryer for salty wastewater came into being, showing advantages in removing salt and organic matter from wastewater.
Equipment principle:
Salty wastewater treatment is to remove impurities from the mother liquor. In the centrifugal spray dryer, the liquid material is transported to the high-speed centrifugal atomizer at the top of the tower through the liquid pump. Under the action of centrifugal force, it is sprayed into extremely fine mist droplets, which are in contact with hot air in parallel and dried into crystals in a very short time, separating the crystals from the mother liquor.
Equipment advantages:
1. High thermal efficiency. The inlet temperature can be automatically controlled at 140-350℃, and the inlet air temperature is high, which improves the drying intensity.
2. High reliability. The process is simple, the equipment is few, the main machine is mature equipment, and the mechanical properties are stable.
3. Good energy saving. The system has a small pressure loss, and the power of the booster fan is small. At the same time, the fan and the main machine motor adopt variable frequency speed regulation to save operating power consumption.
4. Fast drying speed. 95% to 98% of the water can be evaporated instantly, and the drying time only takes a few seconds.
5. Good operating performance. Taking into account the unstable moisture content of the feed, the appropriate design margin should be considered for the system drying capacity, so that normal continuous production can be guaranteed even when the moisture content of the feed is slightly high. At the same time, considering the influence of human factors, the system has the characteristics of high equipment reliability, simple operation and control, high thermal efficiency, and stable use.
6. The production process is simplified and easy to operate. When treating salt-containing wastewater, powder crystals can be dried out at one time, and the crystals are completely separated from the mother liquor, reducing the production process.
7. Due to the great variety of salt-containing wastewater, the treatment requirements for different salt-containing wastewater are also different. Within a certain range, the equipment can be adjusted by changing the operating conditions, and it is very convenient to control and operate the drying crystals.
Application range:
Centrifugal spray dryers are widely used in industry and are widely used in organic catalysts, washing powder, dyes, waste liquid and other chemicals, vitamins, amino acids, condiments and other foods, clay, porcelain clay, magnesium oxide, and other ceramics. According to the different characteristics of the materials, the equipment structure, operating conditions and production process arrangement of the centrifugal spray dryer are different.
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