Alkali Spray Tower Acidic Waste Gas Absorption Tower Dongting

NegotiableUpdate on 01/08

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Nature of the Manufacturer: Producers

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Place of Origin

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Overview

The acid waste gas absorption tower Dongting of the alkali spray tower uses gas-liquid countercurrent contact to neutralize acidic pollutants (such as HCl, H ₂ SO ₄, NO ₓ, HF, etc.) using alkaline absorption solution, which has the advantages of high treatment efficiency, stable operation, and easy operation

Product Details

Alkali Spray Tower Acidic Waste Gas Absorption Tower DongtingThrough gas-liquid countercurrent contact, alkaline absorption solution is used to neutralize acidic pollutants (such as HCl, H ₂ SO ₄, NO ₓ, HF, etc.), which has the advantages of high treatment efficiency, stable operation, and easy operation. It is widely used in the treatment of acidic waste gas in industries such as chemical, electroplating, metallurgy, pharmaceuticals, and photovoltaics.

Process flow of acid waste gas absorption tower:

Acidic waste gas → pretreatment (dehazing/dust removal) → fan pressurization → alkali spray tower (gas-liquid contact reaction) → dehazing device (treating droplets) → standard emission

Absorption liquid circulation path: circulating water tank → circulating pump → spray layer → packing layer (gas-liquid contact) → tower bottom collection tank → circulating water tank (replenishing alkali solution/regular drainage)

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Alkali Spray Tower Acidic Waste Gas Absorption Tower DongtingStructure and Main Component Design

structural unit	Design Key Points	Selection and Parameters
Inlet section	Adopt tangential or downward intake method, set up airflow distribution plate to avoid exhaust gas from directly rushing into the packing layer	The air inlet speed should be controlled between 8-12 m/s
Packing section	In the gas-liquid contact area, it is necessary to increase the contact area and extend the contact time	1. Packing type: Polypropylene Ball Ring/Step Ring (corrosion-resistant, high flux), diameter 25-50mm;
		3. Empty tower gas velocity: 1.0~2.5m/s (adjusted according to packing type)
Spray section	Evenly spray absorption solution to cover all filling layers	1. Spray layer number: 2-3 layers (ensuring liquid to gas ratio);
		2. Nozzle selection: Spiral nozzle/hollow cone nozzle, particle size 100-200 μ m, spray angle 90 °~120 °;
		3. Liquid gas ratio: Conventional acidic waste gas is taken 3~8L/m³
Mist removal section	Remove liquid droplets carried in the exhaust gas to avoid white smoke/secondary pollution	1. Type of defogger: baffle defogger (low resistance) or wire mesh defogger (high efficiency);
		2. The droplet content at the air outlet is less than 50mg/m ³;
		3. Flushing device: Regularly flush the defogger to prevent blockage
circulatory system	Ensure absorption liquid circulation and pH stability	1. Circulating pump: corrosion-resistant centrifugal pump (made of FRP/PP material), flow rate calculated based on the liquid to gas ratio;
		2. Circulating water tank: with a capacity of ≥ 10 minutes, the circulating pump flow rate is equipped with an online pH monitoring device, an automatic dosing device, and a sewage outlet

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