Activated Carbon for Waste Incineration
Activated carbon for waste incineration is an environmentally friendly material used for waste incineration waste gas treatment. It is mainly used to adsorb harmful gases and pollutants generated during the incineration process, such as dioxins, heavy metals (mercury, lead, etc.), acidic gases (SO₂, HCl) and volatile organic compounds (VOCs). Due to its high adsorption performance and wide applicability, it is one of the core materials for waste incineration flue gas purification.
Characteristics of activated carbon for waste incineration
1. Super strong adsorption capacity
Activated carbon has rich micropores, mesopores and macropores, which can efficiently capture small molecules and complex macromolecular pollutants.
2. Specific chemical treatment
Activated carbon for waste incineration is usually chemically modified (such as impregnation with iodine, bromine or sulfide), and has a stronger adsorption capacity for dioxins, heavy metal ions and acidic gases.
3. High thermal stability
It can maintain structural stability in the high temperature environment of waste incineration waste gas (usually in the range of 100-200°C), without decomposition or release of harmful substances.
4. Strong anti-toxicity
It has selective adsorption for a variety of gaseous pollutants, and it is not easy to affect the removal effect of other pollutants due to the adsorption of one pollutant.
The role of activated carbon in garbage incineration
1. Removal of dioxins
- Dioxins produced during garbage incineration are highly toxic persistent organic pollutants. Activated carbon can effectively adsorb and solidify their molecular structure to reduce emission risks.
2. Adsorption of heavy metals
- It has strong adsorption for heavy metal ions such as mercury, lead, and cadmium. In particular, modified activated carbon has a significant adsorption effect on gaseous mercury, which can meet strict emission standards.
3. Neutralization of acidic gases
- In combination with alkaline adsorbents sprayed into the incinerator, activated carbon can help remove acidic components in exhaust gas (such as sulfur dioxide and hydrogen chloride) and reduce the corrosiveness of flue gas.
4. Reduce VOCs emissions
- Adsorb volatile organic compounds (such as benzene, toluene, etc.) produced during incineration to reduce the organic pollution load in exhaust gas.
Use process
1. Dry spray adsorption
- Activated carbon is directly sprayed into the waste incineration flue gas pipeline in powder form, fully mixed with the exhaust gas, and the adsorbed pollutant particles are captured by an adsorption device (such as a bag filter).
2. Fixed bed adsorption
- Adsorption is carried out through a fixed bed (or honeycomb activated carbon) during the flow of flue gas, which is suitable for treating flue gas with low flow rate and high concentration of pollutants.
3. Moving bed adsorption
- Activated carbon slowly moves downward and fully contacts with the countercurrent flue gas to improve the adsorption efficiency, which is suitable for processes that require deep purification.
4. Combined process
- Activated carbon spray adsorption is usually combined with dry/semi-dry deacidification process to remove acidic gases, adsorb dioxins and heavy metals, and synergistically improve purification efficiency.
Summary
Garbage incineration activated carbon is a key material in garbage incineration flue gas purification. It has the ability to efficiently remove dioxins, heavy metals and acidic gases, and is an important guarantee for achieving environmental protection standards. Selecting suitable activated carbon materials and processes according to different incineration scenarios and pollutant characteristics can not only improve purification efficiency, but also reduce operating costs and environmental impact.
If you need help selecting or designing a garbage incineration activated carbon solution, feel free to contact me!
