Sodium bicarbonate (baking soda desulfurization) pulverizer dry desulfurization grinding system

The use of sodium bicarbonate (sodium bicarbonate) dry desulfurization can not only meet the stringent requirements of environmental protection, but also effectively reduce investment and operating costs compared with other flue gas purification methods

Now we will introduce in detail how the sodium bicarbonate (baking soda) grinding system can work effectively and easily meet the environmental requirements.

The raw material of sodium bicarbonate is usually coarse particles (d50 value is about 150-200 μ m). To achieve high reactivity, the adsorbent must have a large specific surface area and be ground to a certain fineness (d90:20um or the appropriate particle size adjusted as required). For example, to remove SO2, the fineness of sodium bicarbonate must reach d90<20 µ m. For HCl removal, d90<35 µ m.

In order to obtain the required fineness of sodium bicarbonate in long-term operation, the pulverizer with its own classification system and the conveying fan are usually used as a complete set of grinding and powder spraying device. The crushed sodium bicarbonate fine powder has a layered or porous structure, uniform particle size, and good dispersion. Then, the solid ultrafine powder is directly sprayed into the furnace or reaction tower through multiple nozzles. It can effectively remove more than 95% of SO2 and HCI in the tail gas, and the removal rate can even reach 99%.

This dry desulfurization technology can not only be used in coal power plants, garbage or alternative fuel incineration plants, but also widely used in industrial furnaces in glass, cement, metallurgy and other industries. Dry flue gas purification can economically meet the flue gas emission standards (such as GB 13223 in China).