Ministry of Higher and Secondary Special Education of the Republic of Uzbekistan Almalyk branch of Tashkent State Technical University named after Islam Karimov Faculty of Energy and Mechanical Engineering Department of Chemical Technology

We physically and chemically divide industrial waste treatment into four stages.

• We physically and chemically divide industrial waste treatment into four stages.
• 1. Absorption method - purification of liquid mixtures by washing.
• 2. Adsorption - washing of gas and dust wastes.
• 3. Chemisorption - washing of waste with chemically bound reagents.
• 4. Kabolitin method is the neutralization of the mixture from the gases by heat.

Conclusions

• Technical zinc sulfate is produced by evaporating a solution of zinc sulfate in a fluidized bed furnace (BL).
• The solution after cementitious purifications from cadmium in the cadmium production is fed to the filter press for filtering. The filtered solution is sent to a filler with a capacity of 70 m3. From the collection container, the gravity solution is periodically poured periodically as necessary into a 20 m3 supply tank. The tank is equipped with a level gauge for measuring the amount of solution. From the supply tank, the olution is pumped to the nozzles and sprayed into the furnace.
• The jet of sprayed solution from the nozzles is directed into a fluidized bed consisting of granular zinc sulfate. The temperature in the fluidized bed is maintained within 240-2900 C due to the heat of the gases generated from the combustion of natural gas in the furnace.
• The temperature under the hearth of the furnace 780-8600 C is regulated by the amount of natural gas supplied. To remove gases and water vapor, a vacuum of 5-10 mm water is maintained in the furnace. the column, which is created by a smoke exhauster installed at the end of the gas duct..