Sodium Bicarbonate Air Classifying Mill

To produce baking soda suitable for removing more than 95% of SO2 and 99% of HCl from exhaust gas

Sodium Bicarbonate Air Classifying Mill

Sodium Bicarbonate Air Classifying Mill

To produce baking soda suitable for removing more than 95% of SO2 and 99% of HCl from exhaust gas

The Sodium Bicarbonate Air Classifying Mill is capable of removing sulphur dioxide (SO2), hydrogen chloride (HCl) and other pollutants from municipal, hazardous, and sludge incineration processes, as well as cement plants, glass factories, steel mills and coke ovens.

Request a Quote
How it works

Sodium bicarbonate (baking soda) raw material is uniformly fed into the chamber through a quantitative feeder at the lower part of the silo, which grinds raw material into a particle size of D90:20μm, allowing to adjust particle size according to specific requirements. The high-pressure fan then conveys the powders into the pipeline and sprays it directly into the flue gas, quickly reacting with acid gases and decomposing them into sodium carbonate (Na2CO3), H2O, and CO2 at high temperatures. Newly generated sodium carbonate has an incredibly high reaction activity that efficiently reacts with acidic substances in the flue gas.

Chemical reaction of sodium bicarbonate
Chemical reaction of sodium bicarbonate

NaHCO3 + HCl → NaCl + H2O + CO2
2NaHCO3 + SO2 + ½ O2 → Na2SO4 + H2O + 2CO2
NaHCO3 + HF → NaF + H2O + CO2

Advantages
  • Dry process desulfurization Desulfurization by dry process can remove more than 95% of SO2 and 99% of HCl in the tail gas.
  • Easy to disassemble and wash Compact structure, easy to disassemble and wash. Cleaning In Place (CIP) optional, reducing downtime by removing stucked material.
  • Quick maintenance Quick maintenance with power-assisted flip device and manhole for fan
  • Low investment & operation cost Imple and reliable process, ensuring low investment, low operation cost and short construction period
  • Low failure rate and stable operation Stable operation and low failure rate, suitable for continuous running up to 8000 hours per year
  • Large air intake design Large air intake design reduces grinding temperature; cold air device available if needed
  • Clean and environmentally friendly Closed loop system produces less dust, low noise, supporting a clean and environment-friendly production process.
  • Non-irritating and non-toxic Non-irritating/non-toxic additive (sodium bicarbonate) & residue
  • Integrated design of grinding and classifying Grinding & classifier integrated design allows adjustable particle sizes by adjusting the rotating speed.
  • Intelligent control system Intelligent control system with one-key operation & in-place monitoring of sulfur dioxide concentration, system air volume, feeding volume, grinding temperature, etc.
  • Narrow particle size distribution The particle size adjustable between D90: 10-40 μm, with good particle shape and narrow distribution
  • Automatically adjusting the injection of the desulfurizing agent Automatically adjusts injection amount of desulfurizing agent according to flue gas concentration fluctuation
Technical parameter
TSM parameter
300
400
500
630
800
1000
1250
Grinding disc diameter (mm) 280 410 510 630 800 1000 1200
Grinding disc power (kW) 7.5 18.5 22 37 55 75 110
Classifier power (kW) 3 5.5 7.5 15 18 22 30
Production capacity for D90:20μm (kg/h) 10-80 50-150 100-200 200-400 300-600 500-1000 1200-2000

Note: The particle size, specific gravity, hardness, and moisture of raw materials are all closely associated to the production capacity. These parameters should only be used as a reference; for more detailed information please consult our engineers.

Product particle size distribution
Product particle size distribution
Classical models
  • Classic model TSM500 Classic model TSM500
    Used by a number of environmental protection companies in the desulfurization process
  • Giant mill TSM1250 Giant mill TSM1250
    Exported to Europe for desulfurization projects
  • Baking soda desulphurization mill Baking soda desulphurization mill
    High-precision mechanical mill, special model 710 for baking soda desulfurization
ALPA is a highly respected name in particle and powder processing, transforming the way the industry views traditional powder processing. Our research and development initiatives have focused on dry grinding, classification and separation, powder shape control and surface modification of particles and powders over the past two decades. As a result, we are proficient in providing tailored, CE-certified products, such as air jet mills, mechanical mills, air classifiers, ball mill with classifier, surface modification lines and more.
Related Products
Get in Touch
Other Products
    1. Dust Removal & Collection
    2. Dust Removal & CollectionThe powder, after being ground and classified, is collected by either a cyclone separator or a dust collector, or both if necessary. A filter bag, a filter cartridge, or a plastic burning plate type dust remover may be used.
    1. Powder Spheroidization
    2. Powder SpheroidizationSpherical powder, especially when it is highly dispersed, has good fluidity due to its form. Its dispersion, larger surface area per unit volume and its physical and chemical properties make it a key role in more applications.
    1. Drying & Dispersing
    2. Drying & Dispersing The usage of powder products used in food, medicine, fertilizer, pesticide and other industries is sometimes hindered by the caking during transportation and storage.