dry desulfurization pulverizer for sodium bicarbonate

Dry Desulfurization Pulverizer Overview

The dry desulfurization pulverizer refines adsorbents such as sodium bicarbonate (NaHCO₃) and adjusts powder particle size via a built-in grading system. The resulting ultrafine sodium bicarbonate powder features uniform particle distribution and a laminar or porous structure, which greatly increases its contact area with harmful flue gases, thus enhancing desulfurization. The powder is sprayed directly into combustion furnaces or reaction towers through multiple nozzles, efficiently adsorbing sulfur dioxide (SO₂), hydrogen chloride (HCl), and other pollutants at high temperature. This process can remove more than 95% of SO₂ and up to 99% of HCl from exhaust gases.

Working Principle of Dry Desulfurization Pulverizer

Sodium bicarbonate particles are injected into the flue gas stream at high speed using compressed air or airflow. The internal grading system ensures particle uniformity and optimal desulfurization size. Once the crushed powder enters the furnace or reaction tower, it decomposes at high temperature into sodium carbonate (Na₂CO₃), water (H₂O), and carbon dioxide (CO₂). Sodium bicarbonate then reacts with SO₂ and HCl in the exhaust, forming harmless substances and purifying the flue gas. The process occurs within a closed-loop system, preventing dust leakage and environmental pollution.

Features of Dry Desulfurization Pulverizer

1. High-efficiency crushing and grading: The self-grading system ensures efficient particle size control and uniform fine powder, optimizing desulfurization effectiveness.
2. Environmentally-friendly design: Closed system operation minimizes dust emissions and noise, meeting modern environmental standards.
3. High temperature stability: Sodium bicarbonate powder remains stable at high temperatures, ensuring complete adsorption and chemical reaction during flue gas desulfurization.
4. Automatic control: Intelligent PLC and touchscreen control system enable real-time adjustment and monitoring of key parameters, allowing one-key and automated operation.

Advantages of Dry Desulfurization Pulverizer

1. Environmental protection and high efficiency: Effectively removes SO₂ and HCl from flue gas to meet strict environmental regulations, suitable for power plants, industrial boilers, and other major sources.
2. Reduced investment and operating costs: Compared to traditional desulfurization, dry technology lowers both equipment investment and operating costs, especially when using low-cost sodium bicarbonate as the desulfurizer.
3. Uniform particle distribution and significant effect: The fine powder’s laminar or porous structure enhances contact with pollutants, improving desulfurization efficiency.
4. Green and clean production: Fully enclosed system operation reduces dust pollution and environmental impact, aligning with green manufacturing concepts.

Application Areas of Dry Desulfurization Pulverizer

• Thermal power plants – Flue gas desulfurization for emission standards compliance
• Iron and steel smelting – Removal of SO₂ and HCl from high-temperature exhaust
• Petrochemical industry – Gas purification in various chemical processes
• Cement production and waste gas treatment – Efficient removal of harmful gases in high-temperature, high-pressure environments
• Other fields – Any application requiring efficient gas purification and environmental protection