Spray Tower Scrubbers

Industrial Spray Tower Scrubber for Acid Mist, Odor and Exhaust Pretreatment

Model: ZL-ST Series
Specification: Wet scrubber spray tower for industrial exhaust purification
Size: 5000 to 60000 m3/h airflow options
Price: Contact us
Description: Industrial spray tower scrubber for wet exhaust gas treatment, acid mist removal, odor reduction, and pre-treatment before VOC equipment.
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Industrial Spray Tower Scrubber

An industrial spray tower scrubber uses circulating liquid, spray nozzles and gas-liquid contact to remove acid mist, alkaline gas, soluble pollutants, odor components and part of particulate matter from exhaust gas. It is widely used in chemical workshops, surface treatment, electroplating, laboratory exhaust, wastewater station odor and wet pre-treatment before deeper VOC control equipment.

What a Spray Tower Can and Cannot Do

Pollutant	Suitability	Engineering Note
Acid or alkaline gas	Good fit	Requires correct scrubbing liquid, pH control and corrosion-resistant material.
Water-soluble odor	Possible	Efficiency depends on solubility, chemical dosing and contact time.
Dust or mist	Partial removal	Works as wet pre-treatment, but sludge and wastewater handling must be planned.
Non-water-soluble VOC	Not a final solution	Usually needs activated carbon, RCO, RTO or another VOC stage after pretreatment.

Material Selection

PP is normally selected for strong acid and alkali resistance in corrosive exhaust. Stainless steel is used when the customer needs higher structural durability, better appearance or specific material standards such as 201, 304 or 316. Material should be chosen by gas composition, liquid chemistry, temperature, outdoor environment and budget, not by appearance alone.

Core Components

Tower body with inlet, outlet and access ports.
Spray nozzles and circulation pump for gas-liquid contact.
Packing or contact section when longer contact time is needed.
Demister to reduce liquid carryover.
Circulation tank, dosing system and blowdown arrangement when required.

Selection Parameters

Parameter	What to Confirm	Design Impact
Airflow	Total exhaust volume and collection points	Determines tower diameter, height and pressure drop.
Gas composition	Acidic, alkaline, soluble, oily, dusty or mixed	Determines liquid chemistry and material.
Removal target	Pretreatment or final compliance stage?	Decides whether downstream carbon/RCO/RTO is needed.
Maintenance	Nozzle access, pump inspection, packing cleaning	Affects long-term reliability.
Wastewater	Can the factory manage circulating liquid and blowdown?	Important for real operation cost and compliance.

Common Mistakes

Using a spray tower as the only VOC treatment stage for non-water-soluble solvent exhaust.
Ignoring pH control and chemical dosing when treating acid or alkaline gas.
Choosing undersized tower diameter, causing high velocity and liquid carryover.
Forgetting demister maintenance, which can send mist into downstream equipment.

Quotation Data to Prepare

Send airflow, pollutant names, concentration, temperature, humidity, pH tendency, required material, available space, wastewater handling condition, voltage and destination country. If the tower is used before activated carbon or RCO, also describe the downstream VOC treatment target.