Table of Contents

1. Introduction to Wet Scrubbers
2. Principles of Operation
3. Design Considerations
4. Types of Wet Scrubbers
5. Performance Metrics and Analysis
6. GETC Company Solutions
7. References

Introduction to Wet Scrubbers

Wet scrubbers are air pollution control devices used to remove particulates and gases from industrial exhaust streams. These systems leverage liquid, typically water, to capture pollutants, making them essential in industries requiring strict emission standards.

Principles of Operation

Wet scrubbers operate on the premise of mass transfer between gas and liquid phases. Polluted gas streams contact the scrubbing liquid, resulting in the absorption or chemical reaction with the liquid. This interaction enables the removal of soluble gases and particulates from the exhaust.

Design Considerations

Key parameters influencing wet scrubber design include:

• Liquid-to-gas ratio (L/G): Typically ranges from 0.5 to 3.0 gallons per 1000 cubic feet of gas processed.
• Pressure drop: Typically ranges from 2 to 10 inches of water gauge, ensuring efficient pollutant capture without excessive energy expenditure.
• Inlet gas temperature: Commonly between 120°F to 200°F, as higher temperatures can affect scrubbing liquid performance.

Types of Wet Scrubbers

Different configurations exist to cater to specific industrial needs, including:

• Spray Towers: Use fine droplets to increase contact area with gases.
• Venturi Scrubbers: Utilize high-speed gas flow to atomize the liquid, achieving high removal efficiency for fine particulates.
• Packed Bed Scrubbers: Incorporate packing materials to increase surface area, enhancing gas and liquid contact.
• Orifice Scrubbers: Employ a fixed or dynamic orifice to intensify droplet impact and mixing.

Performance Metrics and Analysis

Key performance metrics include:

• Collection Efficiency: Usually exceeds 95% for particulates larger than 1 micron.
• Pollutant Removal Rate: Can achieve greater than 90% for soluble gases like sulfur dioxide and hydrogen chloride.
• Energy Consumption: Power requirements are often in the range of 0.2 to 5.0 kW for every 1000 cubic meters of gas treated, depending on design and operating conditions.

GETC Company Solutions

GETC specializes in customizable wet scrubber systems to meet diverse industrial requirements. Their solutions emphasize:

• Modular Design: Allowing scalable solutions based on emission profiles and plant size.
• Advanced Materials: Using corrosion-resistant materials to improve longevity and reduce maintenance.
• Energy Efficiency: Design optimizations that reduce pressure drop and lower operational costs.

References

[1] Perry, R. H., & Green, D. W. (1997). Perry's Chemical Engineers' Handbook (7th ed.).
[2] Seinfeld, J. H., & Pandis, S. N. (2016). Atmospheric Chemistry and Physics: From Air Pollution to Climate Change (3rd ed.).
[3] Buekens, A. (1998). Air Pollution Control Technology. Springer.
[4] GETC Company Brochure (2023). Wet Scrubber Solutions. Retrieved from GETC official website.