Decarbonization filters, with their core function of efficiently removing carbon dioxide, have important applications in industrial gas purification, wastewater treatment, and energy fields. Its main characteristics and daily maintenance points are as follows:
Core characteristics of decarbonization filters
1. Efficient carbon removal capability
It can significantly reduce the CO ₂ content in gases or liquids, such as reducing the effluent CO ₂ concentration to<5mg/L, meeting strict industrial water quality standards.
2. Energy saving design
Low power centrifugal fans are used to replace traditional blowers, and some equipment is equipped with jacket insulation function to reduce energy consumption and adapt to high-temperature fluid treatment.
3. Anti pollution structure
Micro porous tubes can achieve physical regeneration and extend their service life through rapid backwashing with a "gas water mixed fluid"; Titanium rods and other materials (304/316L stainless steel, titanium alloy) have strong corrosion resistance.
4. Intelligent control
Configure automatic slag discharge, backwash system and online monitoring instruments to reduce manual intervention and improve operational stability.
Key points for daily maintenance of decarbonization filters
1、 Preprocessing system maintenance
Anti blocking measures:
The pre activated carbon filter needs to be replaced monthly to adsorb compounds such as siloxanes and avoid clogging subsequent fillers.
• Regularly check the mist eliminator, and wash the gas water separator with 60 ℃ hot water+alkaline detergent every week in the kitchen biogas scene to prevent the accumulation of grease and foam.
• Temperature control: Maintain an intake temperature of 35-45 ℃ (below 35 ℃ is prone to condensation, above 50 ℃ can damage equipment).
2、 Periodic cleaning and regeneration
1. Backwash operation
Adopting air-water mixed backwash technology: water speed of 15-20m/h, air flow rate of 10-15m ³/(㎡· h), efficient removal of pollutants.
After backwashing, it is necessary to perform forward washing until the effluent turbidity is ≤ 1NTU to avoid residual impurities affecting subsequent operation.
2. Membrane component maintenance (membrane decarbonization)
Clean the surface of the membrane with a 0.5% NaOH solution at 60 ℃ every month to remove grease (oil stains can accelerate the aging of the CO ₂ membrane).
Check the gas-liquid separator every 2 hours, promptly discharge condensed water, and prevent liquid water from entering the membrane components and causing a decrease in separation efficiency.
3、 Key parameter monitoring
Pressure drop management: Record the inlet and outlet pressure difference every 2 hours, and the normal value should be ≤ 0.05MPa; If it exceeds 0.1MPa, the filter material should be checked for clogging or blockage.
Gas concentration monitoring: Calibrate the online H ₂ S analyzer with standard gas every week (with an error of<± 2% FS), and switch to the backup desulfurization tower when the outlet H ₂ S>20ppm.
4、 Safety and emergency maintenance
1. Emergency response to leakage:
The operator carries a portable H ₂ S alarm (range 0-100ppm) with them, and starts the strong exhaust fan when the concentration is greater than 10ppm.
The backup Na ₂ CO ∝ solution spray system is used for emergency neutralization of H ₂ S leaks.
2. Microbial protection (biological decarbonization system):
Reserve 20% of spare bacterial strains (such as Thiobacillus liquid) and add them to prevent bacterial collapse when efficiency suddenly drops.