Description

The LineSig LNS-SC-WET is a vertical packed-bed wet scrubber engineered for the removal of corrosive gases, chemical vapours, industrial odours and water-soluble contaminants from process exhaust streams. The system combines high-efficiency gas-liquid mass transfer with controlled chemical absorption, neutralisation or oxidation.

Scrubbing liquid is continuously recirculated through internal spray headers and packed media while the required chemical condition is maintained automatically via pH, ORP or conductivity control.

LineSig LNS-SC-WET wet packed-bed scrubber system

Typical contaminants

Hydrogen chloride (HCl), hydrogen fluoride (HF), sulfur dioxide (SO₂), hydrogen sulfide (H₂S), ammonia (NH₃), chlorine (Cl₂), mercaptans, amines, acid fumes, alkaline vapours, water-soluble VOCs, industrial odours and selected acid mists and soluble aerosols.

Process

How it works

Contaminated air enters the lower scrubber section and is distributed across the column
Gas travels upward through wetted packing (packed-bed absorption)
Contaminants dissolve into the circulating liquor and react with the selected reagent
Internal full-cone nozzles continuously wet the packed section

Entrained droplets are removed by the mist eliminator before discharge
Treated gas exits to the stack
Sump liquid is pumped continuously back to the internal spray system
pH, ORP or conductivity signals regulate chemical dosing and blowdown

Typical chemical operations

HCl / HF / SO₂	NaOH or alkaline solution
NH₃	Dilute acid scrubbing
H₂S	NaOH + oxidizing agent
Mercaptans	Alkaline / oxidation chemistry
Chlorine	Alkaline or reducing treatment
Acid mist	Water / alkaline solution
Soluble VOCs	Water or application-specific liquor
Mixed odour gases	Selected neutralisation / oxidation chemistry

Final reagent selection should always be based on actual gas composition, inlet concentration and discharge requirement.

Design

Key benefits

High gas-removal efficiency, compact vertical packed-bed design
Suitable for corrosive industrial gases
Multiple chemical-treatment modes, low pressure-drop packing
Uniform internal spray distribution

Automatic fresh-water make-up, pH / ORP / conductivity control
Automatic chemical dosing, controlled blowdown
High-efficiency mist elimination, corrosion-resistant construction
PLC/HMI automation, single-stage or multi-stage configuration

Available configurations

Water scrubber — for highly water-soluble contaminants
Alkaline scrubber — for acidic gases
Acid scrubber — for ammonia and alkaline vapours

Oxidizing scrubber — for H₂S, mercaptans and selected odours
Two-stage scrubber — when different contaminants require separate chemical reactions
Venturi + packed bed — where particulate or aerosol removal is required before absorption

Technical specification

Typical construction options

Scrubber shell	FRP/Vinyl Ester, PP, PVC, PVDF, SS316L
Packing	PP / PVDF
Spray piping	PP / PVC / PVDF
Spray nozzles	PP / PVDF / SS
Mist eliminator	PP / PVDF
Pumps	PP / PVDF / SS / FRP-lined
Piping	PP / PVC / PVDF / FRP / SS
Skid	Coated CS / SS
Control panel	Painted steel / SS304 / SS316

Control & automation: PLC/HMI control, automatic sump-level control, fresh-water solenoid/control valve, recirculation flow monitoring, pH/ORP/conductivity-TDS monitoring, automatic chemical dosing and blowdown, packed-bed differential pressure, blower VFD control, pump duty/standby changeover, local/remote operation, alarm history and SCADA/DCS communication.

Where it's used

Industries & applications

Chemical & petrochemical — reactor vents, process tanks, storage vents, chemical handling
Fertilizer & ammonia plants — NH₃ and alkaline gas treatment
Metal pickling & galvanizing — HCl, H₂SO₄ and acid-fume removal
Wastewater treatment — H₂S, ammonia and odour control

Pulp & paper — sulfur compounds and chemical vapours
Textile & dyeing — acid and alkaline process fumes
Food & rendering — odours, amines and soluble process vapours
Battery/recycling & bulk chemical storage — acid mist, tank breathing and transfer vapour treatment

Downloads

Documents

LNS-SC-WET datasheet PDF

Wet packed-bed scrubber LNS-SC-WET