CR type glass fiber reinforced plastic acid mist purification tower is based on the advanced technology of foreign waste gas treatment equipment and on the basis of the acid mist purification tower manufactured by our company for many years, the new generation of acid mist purification treatment equipment is improved, the equipment has low resistance, energy consumption, low noise and high treatment efficiency. It can deal with hydrofluoric acid (HF), hydrochloric acid fog (HCl), sulfuric acid fog (H2SO4), chromic acid fog (CrO3), hydrocyanic acid (HCN), hydrogen sulfide (H2S), ammonia (NH3), alkali vapor (NaOH), formalin (HCHO), low concentration nitrogen oxides (NOx) and other acid and base mixed waste gases and water-soluble gases. After years of extensive use by users, its purification efficiency is more than 90%, and the purified waste gas fully meets the second-level emission standards stipulated in the national GB16279 "Comprehensive Emission Standards for Air Pollutants".
Acid fog exhaust gas purification tower working principle:
Under the action of the fan, the acid fog exhaust gas reaches the bottom packing bed, enters the pressure balancing room formed by the internal and external jacket at a low speed, and is transported by circulating pump and washed countercurrent. The exhaust gas is evenly distributed around the PP Terary barbed garland +PP multi-sided hollow ball alternating packing layer, each showing point contact, arranging "Z or W" irregular route walking, without bias phenomenon. Then with the spiral high flow, not blocking the nozzle, so that the gas-liquid two-phase mixing rate of more than 97%, so that the exhaust gas to get the gas-liquid two-phase full contact reaction, and then through the deliquid defogging, to meet the national GB16297-1996 "comprehensive emission standards for air pollutants" in the secondary emission requirements, and finally through the exhaust pipe into the atmosphere.
Acid mist exhaust gas purification tower treatment performance table
| Exhaust name |
Initial concentration mg/m3 |
Purification efficiency％ | Neutralizing and absorbing solution |
| HNO3 | ≤200 | ≥95 | 2-7% NaOH solution and 3-4% Na2S solution |
| NOX | ≤2000 | ≥95 | 7% NaOH solution and 3-4% Na2S solution |
| HF | ≤400 | ≥95 | 2～7％NaOH solution |
| HCl | ≤400 | ≥98 | 2～7％NaOH solution |
| H2SO4 | ≤400 | ≥95 | 2～7％NaOH solution |
| NH3 | ≤4000 | ≥99 | aqueous solution or 2 ~ 7% NaOH solution |
Acid mist exhaust gas purification Tat point:
The system has the characteristics of low resistance, strong corrosion resistance, long service life, low noise, high liquid-gas ratio, long contact reaction time, uniform and fast distribution, stable absorption and small footprint.
Operation and maintenance of acid mist exhaust gas purification tower
1, the purification tower must have a special person responsible for management, set inspection records, and regularly check whether the fan and water pump operate normally every day; Whether the liquid level in the liquid storage tank is within the normal scale; Whether the concentration of NaoH solution is within the prescribed range, if the problem is found, it should be solved in time.
2. Adjust the opening size of the outlet valve of the liquid pump to ensure that the nozzle in the purification tower is covered with water mist to ensure the exhaust gas treatment effect.
3, the concentration of NaoH solution in the liquid storage tank should be maintained in the range of 2-5%, when the concentration is less than 2%, it must be added NaoH solution, the concentration of salt generated by acid and alkali neutralization in the liquid storage tank is higher than 20%, or according to the actual use of regular replacement of the solution, generally completely replace the circulating liquid every month.
4, when replacing the solution, first turn off the pump, drain the saturated solution, and then put the water into the storage tank, and use the pump to cycle for 30 minutes to clean the nozzle and the packing layer.
5, fan, water pump and air valve switching procedures: when starting, first open the air valve, then open the fan, and then open the water pump. When shutting down, turn off the water pump first and then the fan.
6. The dual water pump or dual fan system should switch the water pump or fan every month.
7, according to the use of glass fiber reinforced plastic acid mist purification tower cleaning nozzle, PP filler twice a year, and then regularly replace the nozzle, PP filler, in order to ensure the exhaust gas treatment effect.
8, fiberglass acid mist purification tower air volume regulation is best to use the frequency converter and open air regulation valve.
9, if the weather is cold, if the shutdown, it is best to set PVC pipe insulation or PVC pipe water light, so as to avoid freezing.
