Equipment Description:
I. Core Structure and Working Principle
Tower Structure
Made of polypropylene (PP), it offers a temperature resistance
range of -10°C to 100°C and can withstand corrosion from strong
acids and alkalis up to a concentration of 70%, with a service life
of 10-15 years.
The main structure comprises a spray system (spiral nozzles), a
packing layer (ball rings/polygonal hollow spheres), a demisting
layer (baffles/wire mesh), and a circulating water tank.
Purification Process
Exhaust Gas Intake: Acidic/dust-laden exhaust gas is conveyed to
the bottom of the tower by a fan, forming a swirling upward flow.
Neutralization Reaction: The spray liquid (e.g., NaOH solution) is
atomized and countercurrently contacts the exhaust gas, removing
pollutants through chemical neutralization (e.g., HCl + NaOH → NaCl
+ H₂O) or physical adsorption.
Multi-stage Purification: The packing layer increases the
gas-liquid contact area, improving mass transfer efficiency; the
demisting layer intercepts liquid droplets, ensuring that the gas
meets emission standards.
II. Technical Advantages and Performance Parameters
High-Efficiency Purification Capacity
Acid mist (HCl, H₂SO₄, etc.) removal rate: 95%-99%, VOCs
comprehensive purification efficiency: 70%-85%.
PM2.5+ particle interception rate: ≥90%, paint mist and dust
treatment simultaneously.
Economic Operation
The modular design reduces installation and maintenance costs by
30%. Reusable circulating fluid reduces chemical consumption by 30%
compared to traditional equipment.
Low energy consumption (wind resistance ≤ 800 Pa), suitable for air
volumes ranging from 200 to 50,000 m³/h.
Safety and Environmental Protection
Equipped with an explosion-proof blower and flame-retardant PP
material, it complies with GB16297-1996 emission standards.
The closed design, combined with the paint mist treatment system,
maintains a stable VOC emission concentration of <20 mg/m³.
III. Typical Application Scenarios
Chemical/Electroplating Industry: Treats highly corrosive acid
mists such as HCl and H₂SO₄. Case studies show annual maintenance
costs of less than 20,000 yuan.
Painting/Spray Painting Shops: Purifies paint mist (such as benzene
and xylene) and organic waste gases, achieving a VOC degradation
efficiency of 70%-85%.
Laboratory/Electronics Industry: Treats welding fumes, metal dust,
and mixed waste gases from physical and chemical laboratories.
IV. Selection and Operation and Maintenance Key Points
Selection Parameters
Air Volume Matching: Choose a vertical (compact) or horizontal
(high-concentration waste gas) configuration based on space
requirements.
Pretreatment Configuration: Exhaust gases containing oil mist or
high dust content require a cyclone separator or dry filter.
Operation and Maintenance Management
Regularly monitor the pH of the circulating fluid (a pH of 6-8 or
8-10 is recommended for acidic and alkaline waste gases).
Clean/replace the packing layer every 3-6 months. High-temperature
exhaust gas (>80°C) requires a pre-cooling device to prevent
softening and deformation of the PP material.
V. Optimization Suggestions
Multi-stage cascade: For complex exhaust gases (such as acid mist
and VOCs), an activated carbon adsorption tower or UV photolysis
equipment can be combined to increase the overall purification
efficiency to over 95%.
Intelligent Control: An integrated automatic pH adjustment system
and remote monitoring module reduce the frequency of manual
intervention.
Main structures and components:
1. Tower Body
The core structure is made of polypropylene (PP), which is highly
corrosion-resistant and resistant to acidic and alkaline media
(concentration ≤ 70%). It is typically a vertical cylindrical or
square design.
The interior contains multiple functional areas, with a circulating
water tank/sump at the bottom, an air outlet at the top, and an air
inlet at the bottom to ensure even distribution of exhaust gas.
2. Spray System
Comprising spray pipes, spiral nozzles, and a circulation pump, it
atomizes and sprays the absorption liquid (such as water or
chemicals) using high pressure, creating countercurrent gas-liquid
contact.
Nozzles are typically made of corrosion-resistant PP or ceramic,
and the atomization effect directly affects pollutant removal
efficiency.
3. Packing Layer
Located in the center of the tower, it is filled with
high-efficiency packing such as Pall rings, Raschig rings, or
porous hollow spheres to increase the gas-liquid contact area and
enhance mass transfer reactions.
The packing layer height is typically 0.5-2 meters, adjusted based
on exhaust gas concentration and treatment air volume.
4. Demisting Layer
This layer is located above the packing layer and utilizes baffles,
mesh, or a cyclone structure to separate liquid droplets and
residual particulate matter from the purified gas, preventing
secondary contamination.
The demisting efficiency can reach over 95%, ensuring that the
exhaust gas meets dryness standards.
5. Circulating Water System
Includes a circulating pump, water tank, and piping, ensuring
continuous circulation of the spray liquid, reducing operating
costs.
Some units are equipped with a dosing system for automatic
replenishment of acid and alkali reagents (such as NaOH/H₂SO₄) to
maintain the activity of the absorbent liquid.
6. Auxiliary Control Components
Electrical Control System: Integrates a PLC control cabinet, liquid
level sensor, and pH monitor for automated operation.
Inspection Window/Inspection Port: Conveniently monitors packing
status, clears blockages, and performs maintenance.
Features:
1.High cost performance: Based on the customer's product
positioning and development strategy, and with economic
affordability as the foundation, we achieve the best cost
performance.
2.The advanced and meticulous design concept of the equipment,
along with the highly automated industrial equipment, showcases the
image of a modern and advanced enterprise.
3. It has high adaptability, meeting the current production
requirements and reserving room for development, taking into
account the needs of increased production and improved quality in
the future.
4.Quality compliance strictly adheres to the ISO900 quality
management system, with every minute detail of the entire equipment
installation being strictly controlled.
