+86 15853145085
This comparison table provides universal industry reference dimensions for carbon steel and stainless steel spray towers, applicable to conventional normal-temperature waste gas (wind speed: 2.0~2.5 m/s, empty tower gas velocity: 1.2~1.8 m/s). For corrosive, high-temperature and high-concentration waste gas, the tower diameter and height shall be enlarged according to actual working conditions. Tower diameter is the core design parameter, and it is positively proportional to the square of air volume.
Core Design Formula (Quick Calculation)
Tower Diameter Calculation Formula:
$$D=sqrt{ rac{4Q}{3600pi v}}$$
Q = Treatment air volume (m³/h); v = Empty tower gas velocity (m/s), recommended range: 1.2~1.8 m/s
Effective Height: Conventionally 2.5~3.5 times the tower diameter, including spray layers (2~3 layers), packing layer (1.0~1.5 m), and gas-liquid separation layer.
Air Volume - Tower Diameter - Standard Dimension Comparison Table
Treatment Air Volume (m³/h) | Recommended Tower Diameter (mm) | Total Height (mm) | Number of Spray Layers | Matching Fan Power (kW, Reference) | Application Scenarios |
|---|---|---|---|---|---|
500 | 600 | 2000~2500 | 2 | 0.75~1.5 | Laboratory / Station Exhaust Gas |
1000 | 800 | 2500~3000 | 2 | 1.5~2.2 | Small Equipment Supporting Exhaust |
2000 | 1000 | 3000~3500 | 2 | 2.2~3.0 | Local Ventilation of Small Workshops |
3000 | 1200 | 3500~4000 | 2~3 | 3.0~4.0 | Medium Equipment / Small Production Line |
5000 | 1500 | 4000~4500 | 3 | 5.5~7.5 | Overall Ventilation of Medium Production Line |
8000 | 1800 | 4500~5000 | 3 | 7.5~11 | Overall Ventilation of Medium Workshop |
10000 | 2000 | 5000~5500 | 3 | 11~15 | Large Production Line / Multi-equipment Exhaust |
15000 | 2400 | 5500~6000 | 3 | 15~18.5 | Large Workshop / Small Factory Exhaust |
20000 | 2800 | 6000~6500 | 3~4 | 18.5~22 | Standard Factory Overall Ventilation |
30000 | 3200 | 6500~7500 | 3~4 | 30~37 | Large Factory / Industrial Park Exhaust |
40000 | 3600 | 7000~8000 | 4 | 37~45 | Medium-sized Factory Comprehensive Exhaust |
50000 | 4000 | 7500~8500 | 4 | 45~55 | Large Factory Comprehensive Exhaust |
80000 | 4800 | 8500~9500 | 4 | 75~90 | Industrial Park / Chemical Workshop |
100000 | 5200 | 9000~10000 | 4~5 | 90~110 | Large Chemical / Metallurgical Workshop |
Key Supplementary Instructions
1. Adjustment Principles for Non-standard Working Conditions
High humidity / High dust waste gas: Enlarge the tower diameter by 10%~20% to prevent blockage and increase the number of spray layers.
High-temperature waste gas (＞60℃): Adopt carbon steel with anti-corrosion coating. Enlarge the tower diameter by 15% and increase the height of the gas-liquid separation layer.
Strongly corrosive waste gas (acid-base mist): Select PP/FRP materials. Enlarge the tower diameter by 5%~10% and increase the wall thickness by 2~3 mm.
2. Material Influence on Dimensions
PP Material: Restricted by processing technology, the maximum single-tower diameter is approximately 4000 mm. Multiple towers in parallel are recommended for ultra-large air volume.
Carbon Steel / FRP Material: Customizable large-diameter tower (above 5000 mm). For air volume exceeding 100,000 m³/h, customized single tower or parallel connection is preferred.
3. Installation and Matching Requirements
The tower body shall be reserved with maintenance openings (500~600 mm diameter), liquid level gauge ports and inlet/outlet flanges (one specification larger than the air duct).
Soft connectors shall be installed between the spray tower and the fan. Silencers are equipped at the fan outlet. A circulating water tank with 1/3~1/2 of the tower effective volume is arranged at the tower bottom.
4. Air Volume Deviation Handling
If the actual air volume deviation is ≤20%, it is unnecessary to replace the tower diameter; only adjust the empty tower gas velocity. If the deviation exceeds 20%, the tower diameter must be recalculated to avoid flooding caused by excessive gas velocity or low purification efficiency caused by insufficient gas velocity.
5. Selection Suggestions
Calculate the tower diameter according to actual air volume (with 10%~20% design margin) instead of directly applying standard table data.
For ultra-large air volume (＞100,000 m³/h) and complex working conditions (multi-component waste gas, high-concentration VOCs), entrust professional manufacturers to conduct fluid dynamics simulation and process design.
Packed towers have 30%~50% higher purification efficiency than empty spray towers, while bringing higher system resistance. High-power supporting fans are required, and packing configuration shall be clarified during model selection.
