At present, the environmental protection requirements of various industrial processes are constantly increasing. Waste gas treatment has become an issue that cannot be ignored. Especially in the pyrolysis process of plastics, oil sludge, tyres and biomass, exhaust gas contains a variety of harmful substances. The high-end exhaust gas treatment system is an advanced technical configuration designed to meet strict environmental protection standards. The system achieves efficient exhaust gas treatment by combining a variety of equipment.
Limitations of Standard Exhaust Gas Treatment Solutions
In many pyrolysis equipment, the standard exhaust gas treatment solution usually includes a flue condenser and a spray tower.
- The flue condenser mainly reduces the exhaust gas temperature by cooling water.
- The spray tower removes most of the particulate matter in the exhaust gas by spraying.
However, the processing capacity of these standard equipment is limited. In particular, it is not ideal in treating harmful components in the gas. Pollutants such as sulfur dioxide and nitrogen oxides may still exceed the emission standards, posing a potential threat to the environment. Moreover, if the exhaust gas emission standards of the project location are not met, the project may encounter difficulties in environmental impact assessment.
Composition of High-end Exhaust Gas Treatment System
The high-end exhaust gas treatment system has significantly improved the treatment effect by introducing a variety of advanced equipment. It mainly includes the following equipment:
Desulfurization Tower
The desulfurization tower is a device specifically used to remove sulfides from tail gas. Sulfide is a major air pollutant, and its high concentration emission may cause acid rain and deterioration of air quality. The desulfurization tower usually uses alkaline liquid to react with sulfide to produce a treatable byproduct.
Denitrification Tower
The denitrification tower is used to reduce nitrogen oxides (NOx) in tail gas. The system uses SCR technology for denitrification. Its working principle is to reduce nitrogen oxides with ammonia or urea under the action of a catalyst. Nitrogen oxides are converted into harmless nitrogen.
Electrostatic Precipitator
Its working principle is to use electrostatic force to separate dust from the airflow. This equipment has a high efficiency in dust removal and can handle dust and particulate matter in various industrial gases. Compared with other dust removal equipment, it can handle finer particles and is relatively easy to maintain.
Activated Carbon Dust Collector
The activated carbon dust collector uses the high specific surface area and strong adsorption capacity of activated carbon to remove volatile organic compounds (VOCs) and odors from exhaust gas. Activated carbon can effectively capture organic pollutants and odor molecules in the gas, so that they no longer cause harm to the environment.
Emission Standards for High-end Exhaust Treatment System
This system is an excellent choice for areas with high exhaust emission standards. The exhaust gas from pyrolysis process treated by this system can meet EU emission standards.
| Pollutant | Emission Standard |
|---|---|
| Sulfur Dioxide (SO₂) | ≤ 50 mg/m³ |
| Nitrogen Oxides (NOx) | ≤ 200 mg/m³ |
| Particulate Matter | ≤ 10 mg/m³ |
| Hydrochloric Acid (HCl) | ≤ 10 mg/m³ |
| Hydrofluoric Acid (HF) | ≤ 1 mg/m³ |
Conclusion
High-end exhaust gas treatment system significantly improves the efficiency of gas treatment. In addition, it effectively reduces harmful emissions generated during pyrolysis. The system not only helps pyrolysis equipment meet strict environmental standards, but also enhances the overall reliability of the equipment. If you also want to get an environmentally friendly waste management solution, please contact us.
