SO2, SOx, HF, HCl and other acidic components

Sulfur dioxide (SO2) is a gaseous air pollutant composed of sulfur and oxygen. It combines with water vapor to form secondary particulate matter (PM2.5) during the oxidation to sulfuric acid. It will also react with ammonia to produce ammonium sulfate. SOx is a general term for sulfur oxides (such as SO2, SO3). Sulfur dioxide is converted into sulfate in the atmosphere and is the main source of fine particulate matter pollution.
The main sources of SO2 are public utilities and industrial combustion of fossil fuels; The secondary sources of SO2 emissions include metal extraction and processing, as well as non road diesel equipment.


ZTW SOx scrubber

Dry adsorbent spraying technology based on lime powder combined with ceramic fiber filter tube for reactor equipment.
Purification performance: removal efficiency ≥ 99% (typical emission concentration<50mg/Nm3, minimum<2mg/Nm3).
Simultaneously remove: HCl, HF
Applicable temperature range: 200-1000 ℃.

Learn More

Dry adsorbent injection is carried out in the pipeline upstream of the filter, and the additional particles generated by the adsorbent can be easily captured along with other pollutants. The removal reaction of SO2 occurs in the pipeline before the filter and in the accumulated filter cake on the surface of the filter. The solid particles generated by the reaction between adsorbent and acid gas, along with unreacted adsorbent and process particles, will also be captured by the filter.


Using dry adsorbent spraying technology, the capture rate of SO2 is usually 95% or higher, and the highest removal efficiency can reach 99%. The removal rate of HCl is usually 95%, sometimes even up to 99%. The effective temperature range for removal is 200 to 1000 degrees.


The development of dry adsorbent spraying technology and ceramic integration has completely changed the dry removal methods of SO2, SO3, HCl, and HF. Due to the extremely small leaching amount, calcium hydroxide adsorbent can be easily disposed of in landfills. High SO2 removal rates can be achieved without the high cost and complexity of spray drying or wet waste treatment.


The SO2 scrubber that removes acidic gases such as SOx and HCl can also efficiently remove particulate matter during the removal process. If ceramic integrated technology is used, the system can also simultaneously remove NOx, dioxins, O-HAPs, and mercury.

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2025-08-31 22:45:01
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