Cyclone Tower

▍ Working principle

Its working principle is an organic combination of centrifugal dust removal and wet scrubbing absorption, divided into three main stages:

1. Primary Treatment: Centrifugal Pre-dust Removal (Swirl Chamber Action)

● Waste gas enters each swirl chamber at the bottom of the tower at a high velocity along the tangential direction.

● Inside the swirl chamber, the waste gas forms a high-speed rotating vortex along the chamber wall, generating strong centrifugal force.

● Under the action of centrifugal force, most of the large and medium-sized particles in the waste gas (such as metal shavings, dust, fibers, and large droplets in water vapor) are thrown towards the chamber wall, lose kinetic energy after colliding with the wall, and settle down to the collection area at the bottom of the tower under the action of gravity.

● This process completes the primary purification of the waste gas, removing most of the larger particles that would cause blockage to the downstream spray system.

2. Secondary Treatment: Wet Spray Scrubbing (Water Pump Spray Action)

● The gas, after preliminary purification by the swirl chamber, flows upward and enters the spray scrubbing zone.

● A circulating water pump delivers the washing liquid (water or specific chemical agents) from the bottom tank to the spiral nozzles at the top of the tower.

● The nozzles thoroughly atomize the washing liquid, forming a dense curtain of fine droplets.

● As the gas rises, it comes into counter-current contact with the downward-spraying droplets. Through inertial collision, interception, diffusion, and absorption, fine particulate matter (PM2.5-PM10) is further removed, and some gaseous pollutants (such as acid mist and alkaline mist) are absorbed.

3. Tertiary Treatment: Demisting and Dehydration

● The washed, humid gas carries a small amount of fine droplets as it rises to the demister layer at the top of the tower.

● The demister captures and separates these droplets through changes in airflow direction, collision, and centrifugal action, ensuring that clean, dry gas exits from the outlet, effectively preventing droplet-borne contaminants from affecting downstream fans and pipelines.

4. Liquid Discharge and Liquid Circulation

● The separated pollutants and washing liquid fall to the bottom of the tower.

● Larger and heavier particles settle as sludge and can be periodically discharged through the sludge discharge valve at the bottom of the tower.

● The washing liquid, after settling, is pumped back for spraying by a circulating water pump, achieving recycling and saving water resources.

▍ Structural features

1. Square PP Panel Housing:

● High Corrosion Resistance: PP material resists corrosion from various acids, alkalis, and organic solvents, resulting in a long service life.

● Stable Structure: The square design facilitates modular layout and installation, maximizing space utilization and providing excellent structural strength.

● Easy Maintenance: The spray layer typically features inspection ports, making internal components easy to check and replace.

2. Core Component - Cyclone Tank (Power Wave Assembly):

● The cyclone tank, made of PP material, is the core component generating high-speed centrifugal force.

● Each cyclone tank is an independent centrifugal separation unit, highly efficient and with low resistance.

3. Water Pump Spray System:

● Equipped with a corrosion-resistant water pump to ensure stable spray pressure and flow rate.

● Utilizes large-diameter spiral nozzles, preventing clogging, providing a large spray coverage area, and excellent atomization.

4. Multi-Stage Integrated Design:

● Integrates the cyclone separation zone → spray washing zone → demister zone into a single tower body, resulting in a compact process and high purification efficiency.

5. Automated Control:

● Can be equipped with an automatic water supply valve, level controller, automatic pH monitoring and dosing system to achieve automated operation.

▍ Core advantages

● High-efficiency pretreatment, effective anti-clogging: The cyclone separator removes most large particles and fibers, greatly reducing the risk of clogging in the spray system and nozzles, making it particularly suitable for treating challenging waste gases.

● High dust removal efficiency: Combining the advantages of centrifugal dust removal (highly efficient for large particles) and wet scrubbing (highly efficient for fine particles), the overall dust removal efficiency far exceeds that of single-technology equipment.

● Strong adaptability: Effectively handles complex waste gas conditions with high humidity, high dust concentration, and sticky substances.

● Water and energy saving: The scrubbing liquid is recycled, resulting in low water consumption; the system design optimizes resistance, leading to relatively low fan energy consumption.

● Easy maintenance: The square structure facilitates internal maintenance; the cyclone separator and nozzles are modularly designed and can be replaced individually; the sludge discharge valve at the bottom of the tower facilitates sludge cleaning.

● Long service life: Constructed entirely of PP material, eliminating concerns about metal corrosion, ensuring durable equipment.

▍ Scope of application

This equipment is ideally suited as a high-efficiency pretreatment unit for industries generating complex waste gases, including:

● Coating and Spraying Industry: Treats paint mist, overspray mist, and thinner volatiles, making it the preferred pretreatment equipment for spray booths and baking booths.

● Metal Processing and Smelting: Handles high-concentration metal dust and fumes generated during grinding, polishing, cutting, welding, sintering, and casting processes.

● Biomass and Boiler Industry: Treats complex fumes containing moisture and ash from biomass boilers and wood pellet mills.

● Rubber and Plastics Industry: Treats oily and adhesive-containing fumes and dust generated during plastic granulation, rubber vulcanization, and mixing processes.

● Pharmaceutical and Chemical Industry: Treats mixed dust and waste gases generated during the crushing, drying, and mixing of pharmaceutical raw materials, as well as chemical feeding and packaging processes.

● Wood Processing Industry: Treats wood dust generated from sanding, sawing, and planing, and is particularly suitable for treating MDF (medium-density fiberboard) dust containing adhesives.

● Waste treatment plants: Waste gas containing dust, moisture, and odors generated during waste compression and transfer.

● Ceramics and building materials industry: Mineral dust generated during raw material crushing, screening, and conveying.