PP/PPS Vertical Spray Tower

The PP/PPS vertical spray tower is a corrosion-resistant wet scrubber designed to remove acid and alkaline gases from industrial exhaust streams. Its vertical counter-current design provides efficient gas-liquid contact while keeping the equipment footprint compact. The tower can be customized to suit different airflow rates, contaminants, installation conditions, and process requirements.

Working Principle

Contaminated gas enters the lower section of the tower and flows upward through the packed bed. At the same time, a neutralizing solution is sprayed downward and recirculated through the packing. The large contact area allows soluble pollutants to be absorbed and chemically neutralized. The captured contaminants leave with the circulating liquid, while the treated gas passes through the mist-removal section and is discharged from the top of the tower.

Key Features

▪  PP or PPS construction for excellent resistance to corrosive gases and chemical solutions.

▪  Counter-current gas-liquid contact for stable absorption and neutralization performance.

▪  Compact vertical structure suitable for sites with limited floor space.

▪  Multiple standard sizes covering airflow capacities from 4,400 to 63,600 m³/h.

▪  Customizable dimensions, inlet and outlet configuration, pump selection, and treatment stages.

▪  Suitable for acid mist, alkaline gas, nitrogen oxides, and other water-soluble industrial pollutants.

Models and Technical Parameters

Vertical spray tower technical data (PP construction)

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Model	Airflow at 2.5 m/s (m³/h)	Outside Diameter Φ (mm)	Height, Type 211 (mm)	Height, Type 221 (mm)	Pump Power (kW)	Inlet / Outlet Size	Wall Thickness (mm)	Operating Weight, Type 211 (kg)	Operating Weight, Type 221 (kg)	Net Weight, Type 211 (kg)	Net Weight, Type 221 (kg)
WP80	≤ 4,400	800	2,550	3,300	0.37	Φ355	6	537	561	137	161
WP100	≤ 7,000	1,000	2,850	3,350	0.75	Φ400	6	733	759	233	259
WP120	≤ 10,200	1,200	2,950	3,450	1.5	Φ450	8	893	924	293	324
WP150	≤ 15,900	1,500	3,520	4,270	2.2	Φ600	8	1,334	1,399	434	499
WP180	≤ 23,000	1,800	3,620	4,370	3	Φ700	8	1,753	1,834	553	634
WP200	≤ 28,400	2,000	3,670	4,670	3.75	Φ800	8	2,132	2,248	632	748
WP220	≤ 34,000	2,200	3,770	4,770	5.5	Φ800	10	2,526	2,684	826	984
WP250	≤ 44,400	2,500	3,830	4,830	7.5	1,200×700 / Φ1,000	10	3,168	3,349	968	1,149
WP280	≤ 55,200	2,800	3,870	5,370	11	1,200×800 / Φ1,100	10	3,823	4,119	1,123	1,419
WP300	≤ 63,600	3,000	3,970	5,470	11	1,500×800 / Φ1,200	10	4,326	4,644	1,226	1,544

Technical Requirements

Inspection Item	Unit	Requirement	Result
Pressure loss	kPa	≤ 2	Compliant
Air tightness	—	Welds, pipe connections, and all joints of the purification unit must be airtight with no gas leakage.	Compliant
Operating noise	dB(A)	≤ 85	Compliant
Nitrogen oxides removal efficiency	%	≥ 80	Compliant
Nitrogen oxides outlet concentration	mg/m³	≤ 240	Compliant

Typical Applications

This vertical wet scrubber is suitable for chemical processing, electroplating, metal surface treatment, semiconductor and electronics production, laboratories, pharmaceutical plants, wastewater treatment facilities, and other processes that generate corrosive or water-soluble exhaust gases.

Technical data is based on the standard PP vertical spray tower configuration. Final dimensions, materials, treatment efficiency, and auxiliary equipment are determined according to the actual gas composition, concentration, temperature, airflow, and site conditions.