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Wet Air Scrubber Gas Absorption Column for Chemical Industry
The Gas Absorption Column is mainly composed of Water tank, Circulating water, Packing layer, Spraying system, Demister etc.
The Gas Absorption Column is designed to capture dust particles, VOCs, chemical fumes, and other water / chemically soluble fumes and Vapors generated in industrial process.


The working principle of Gas Absorption Column is:
Desulphurization spray layer is based on the upper part of the tower, the absorption tower slurry circulating pump corresponding to each spray layer. The nozzle configuration of spray layer is simulated designed by professional software in order to ensure good contact with alkali and acid reverse gasreaction; and finally reach purification effects.
Demister installs in the upper of desulphurization tower, a total of two levels.The net is used to separate the entrainment of flue gas cloud droplets, and droplet concentration in flue gas export from mist eliminator is less than 75 mg/Nm3 (dry basis).
At the same time, the equipment also has spray washing device to the tiny dust particles adhesion and desulphurization of flue gas crystallization on the demister system resistance increases.
Chemical absorbents commonly used in Gas Absorption Column include the following:
Alkaline solution:
Alkaline absorption liquid normally contains 1%-10% sodium hydroxide solution, which has great effect in eliminating hydrogen sulfide gas and other stink which produced in waste water processing station.
Acid solution:
Acid solution normally contains 0.5% -5% H2SO4 as washing liquid.
It is mainly used to eliminated the odor resulted from ammonia, trimethylamine gas alkaline.
Sodium hypochlorite solution:
Sodium hypochlorite solution is usually used together with alkaline absorption.
It is widely used for high concentration and low concentration stink.
The name of gas | Molecular formula | The kind of cleaning mixture | Removal rate |
Hydrochloric acid | HCl | H2O NaOH | 90~95% 95~99% |
Hydrofluoric acid | HF | H20 NaOH | 90~95% 95~99% |
Annonia gas | NH3 | H2O H2SO4 | 90~95% >99% |
Cyanic acid | HCN | NaOH | 90~98% |
Sulfur dioxide | SO2 | NaOH | >95~99% |
Chlorine | Cl2 | NaOH | >95~99% |
Hydrogen sulfide | H2S | NaOH | 95~99% |
Sulfuric acid | H2SO4 | H2O | >95~99% |
Chromic acid | CrO3 | H2O | 95~99% |
Sodium hydroxide | NaOH | H2O | 95~99% |
Nitric acid | HNO3 | H2O | 70~90% |
Chemical industries
Pulp and paper industries
Petrochemical industries
Steel making
Corn Processing Facilities,
Food Manufacturing,
Pharmaceutical industries
Fertilizer production and processing industries
Machining and Grinding exhaust,
Fiberglass & Composite Industries,
Utility Boilers,
Foundries and Metal Finishing Operations.

1. Q: How long is your Gas Absorption Column delivery time?
A: About 20 working days.
2. Q. How long is the warranty of your Wet Air Scrubber tower?
A: One year warranty, in the meanwhile, quality inspection before delivery; during the warranty period, we can replace the damaged consumables for free, after the warranty period, we have a good price for consumables for our customers.
3. Q: Do you have technical support?
A: Our Company is responsible for installation and debugging of equipment, meanwhile, responsible for the technology and operation training for user operator.
4. Q: Is overseas after-sales service available?
A: Yes, and we will teach you basic operation and maintenance method after the installation.
5. Q: Could I customize my own equipment?
A: Yes, please inform us your needs in details and we will design the facility according to your requirement.
6. Q: What information should I offer if I would like to request for your quotation?
A: Please inform us as following,
1) Exhaust gas component: VOCs/dust/fumes/odor/particles
2) Exhaust gas airflow
3) Exhaust gas concentration and emission standard.

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