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Horizontal Wet Scrubber – Horizontal Gas-Flow Scrubbing

Horizontal Wet Scrubber is an industrial exhaust gas treatment device that uses a horizontal gas-flow configuration. Pollutant-laden exhaust gas enters from one side of the equipment and passes sequentially through the Spray Section, Packing or other gas–liquid contact zones, and the mist elimination section inside the Scrubber Body, transferring pollutants from the gas phase to the liquid phase through dissolution, absorption, or chemical reaction.

Compared with conventional vertical scrubbers, the horizontal configuration has a lower overall height and can be arranged horizontally along the plant floor or equipment platform, making it particularly suitable for projects with limited installation height, existing horizontally routed ductwork, or a need for a low-profile equipment layout.

A horizontal wet scrubber placed on a flat surface
Features
  • Low-profile structural design. The horizontal layout can significantly reduce the overall equipment height.
  • Large gas–liquid contact area. The Packing Layer provides the absorbent liquid with a large wetted surface area.
  • Suitable for a wide range of absorbable gases. Different types of pollutants can be treated by selecting different scrubbing liquids.
  • Multiple system configurations available. Automatic chemical dosing, pH control, mist elimination, and other systems can be configured.
  • Multiple corrosion-resistant materials available. PP, FRP, and other materials are available.
Annotated diagram of horizontal wet scrubber structure
Structure

The horizontal wet scrubber mainly consists of the following components:

  • Scrubber Body: Houses the Packing, Spray System, and Mist Eliminator, and provides space for gas–liquid contact.
  • Packing Layer: The core gas–liquid mass-transfer zone of the Scrubber.
  • Spray System: Consists of spray piping and nozzles, distributing the recirculating liquid evenly over the top of the Packing Layer.
  • Mist Eliminator: Removes liquid droplets entrained in the treated gas.
  • Recirculation Tank: Stores and collects the Scrubbing Liquid.
  • Recirculation Pump: Returns the Scrubbing Liquid from the Recirculation Tank to the Spray System.
  • Chemical Dosing System: Different absorbents are added according to the type of gas being treated.
Operating Principle
  1. Exhaust gas enters horizontally. Pollutant-laden exhaust gas enters from one end of the equipment and flows horizontally along the Scrubber Body.
  2. Scrubbing Liquid Spray. The Recirculation Pump delivers the Scrubbing Liquid to the Spray System, where it is sprayed from the top or multiple directions.
  3. Gas–Liquid Contact. Exhaust gas passes through the Spray Section and Packing Layer, continuously contacting the Scrubbing Liquid and the liquid film on the Packing surface, where pollutants are absorbed or neutralized.
  4. Droplet separation. The treated gas passes through a mist eliminator to remove entrained droplets.
  5. The scrubbing liquid is collected and recirculated. The liquid that has absorbed pollutants flows into the recirculation tank at the bottom of the equipment and is recirculated after makeup water addition, chemical dosing, or blowdown.
  6. Clean gas discharge. The treated exhaust gas is discharged.
Horizontal wet scrubber operating principle diagram
Specifications
Horizontal wet scrubber dimensioned drawing
Table 1: Horizontal Wet Scrubber Specifications
Model Airflow Capacity
(m/min)
A
(mm)
B
(mm)
C
(mm)
D
(mm)
E
(mm)
F
(mm)
JHS-66 60 3100 600 1800 350 350 180
JHS-86 80 3110 700 1850 400 400 180
JHS-106 100 3180 800 1950 450 450 180
JHS-186 180 3380 1100 2250 600 600 360
JHS-236 230 3570 1200 2450 650 650 360
JHS-336 330 3690 1500 2650 700 700 360
JHS-476 470 3930 1800 2950 950 950 540
JHS-646 640 4190 2100 3250 1100 1100 540
JHS-756 750 4330 2300 3450 1200 1200 720
JHS-956 950 4590 2600 3750 1300 1300 720
JHS-1056 1050 4610 2700 3850 1400 1400 900
JHS-1156 1150 4730 2850 3950 1400 1400 900
JHS-1256 1250 4740 3100 4000 1500 1500 1100
JHS-1606 1600 5250 3600 4400 1700 1700 1100
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