Baking Soda and Activated Carbon Grinding and Spraying System

 Baking soda and activated carbon grinding and spraying system：

 * Metering Spraying System

  * Module

Baking Soda and Activated Carbon Grinding and Spraying System - 

Process Flow Description：

I. System Front End and Grinding Unit

  * Baking soda and activated carbon are conveyed from storage tanks or silos to the grinder, where the particles are 

     fined to increase specific surface area and reaction efficiency.

  * The ground reagents are then conveyed to the metering and spraying unit via a screw conveyor, rotary valve, or 

     pneumatic conveyor, with a blower providing the necessary airflow for transport and dispersion.

II. Dry Acid Removal Spraying and Reaction

  * High-temperature flue gas from incinerators or kilns is cooled by a quenching or heat recovery system before 

     entering a dry flue gas scrubbing (DSI) tower.

  * Grinded baking soda is meteredly sprayed into the flue or scrubbing tower at an appropriate temperature range 

     (Approximately 145–200℃), where it neutralizes acidic gases such as SOx, HCl, and HF in the flue gas, 

     generating solid salt particles.

III. Activated Carbon Injection and Dioxin/Heavy Metal Removal

  * Grinded powdered activated carbon (PAC) is injected between the dry scrubber outlet and the bag filter inlet.

  * Within this temperature range, the activated carbon adsorbs dioxins, volatile heavy metals, and gaseous mercury, 

     which are then intercepted and stabilized along with fly ash in the downstream dust collection system.

IV. Dust Collection, Emission, and Byproduct Treatment

  * The exhaust gas enters the bag filter, where the filter bags capture salt particles, activated carbon-laden particles, 

     and virgin fly ash generated during the reaction. The dust is then discharged to the fly ash or hazardous waste 

     treatment process.

  * The purified flue gas, after treatment by the bag filter, is emitted through a chimney by an induced draft fan. 

  * The concentration meets stringent dioxin and acid gas emission standards and can be integrated with SCR/SNCR 

     denitrification systems to form a complete flue gas treatment chain.