Description
Who Needs This Chemical Scrubber?
Many industrial facilities generate mixed exhaust streams containing multiple acidic and alkaline gases, making dedicated single-pollutant scrubbers uneconomical. According to the EPA mixed gas emission guidelines, modular chemical scrubbers are the most cost-effective solution for small to medium-sized enterprises with complex exhaust requirements.
Small Chemical Plants & Batch Processors: Ideal for facilities producing multiple products with varying exhaust compositions. Our system can handle HCl, H₂SO₄, NOₓ, and NH₃ in a single unit, eliminating the need for multiple dedicated scrubbers.
University & Industrial Laboratories: Treats mixed fumes from chemistry labs, analytical laboratories, and research facilities, where exhaust composition changes frequently based on experiments.
Food & Beverage Processing: Removes a combination of acidic gases, alkaline odors, and organic vapors from food processing operations, including fermentation, cooking, and packaging processes.
Metal Fabrication & Surface Treatment: Handles mixed exhaust from pickling, phosphating, and electroplating lines, which often contain HCl, H₂SO₄, and other acid mists.
Best For: Mixed gas streams with 2-5 different pollutants, individual concentrations ≤1500 mg/m³, and air volumes up to 40,000 m³/h. For single pollutants above 1500 mg/m³, we recommend a dedicated HCl scrubber or NOx scrubber for high concentrations.
Why Choose Our Modular Chemical Scrubber
1. One-Stop Treatment for 12+ Industrial Gases
Our chemical scrubber is designed to handle a wide range of acidic and alkaline gases, including HCl, H₂SO₄, HNO₃, NOₓ, NH₃, H₂S, Cl₂, HF, and more. This eliminates the need for multiple separate treatment systems, reducing both capital and operating costs.
The system uses a flexible absorption process that can be adjusted to target specific pollutants based on your exhaust composition.
2. Modular Design for Customized Performance
Our scrubber features a modular design that allows us to configure the system to your exact requirements. We can add or remove treatment stages, adjust packing type and height, and integrate optional components such as activated carbon deodorization modules.
This modular approach also simplifies future upgrades, allowing you to add additional treatment capacity or new pollutant removal capabilities as your facility grows.
3. 7-10 Day Fast Delivery
Unlike custom-built dedicated scrubbers that can take 4-6 weeks to deliver, our standard modular chemical scrubbers are pre-fabricated and ready for shipment within 7-10 days of order confirmation.
This fast delivery time minimizes project delays and allows you to quickly address air pollution compliance issues.
4. 30% Lower Initial Investment
For facilities with mixed exhaust streams, our modular chemical scrubber offers a 30% lower initial investment compared to installing multiple dedicated scrubbers. The system also has lower operating costs due to shared components and simplified maintenance.
Our total cost of ownership comparison shows that a modular chemical scrubber can save you over $50,000 over 10 years compared to multiple dedicated systems.
5. Easy Installation & Maintenance
Our chemical scrubbers are designed for easy installation and maintenance. The system arrives pre-assembled and ready for connection to your existing ductwork and electrical system. All maintenance access points are conveniently located, and replacement parts are readily available.
The system pairs seamlessly with our anti-corrosion centrifugal fan for optimal performance and reliability.
Technical Specifications
| Air Volume (m³/h) | Tower Diameter (mm) | Wall Thickness (mm) | Drain Outlet | Water Tank Size (mm) | Inlet/Outlet Size (mm) | Pump Power (kW) | Wind Resistance (Pa) | Standard Configuration | Optional Upgrades |
|---|---|---|---|---|---|---|---|---|---|
| 50-4,000 | 800 | 8 | DN63 | 700×550×600 | 315 | 0.75 | 500 | Single-stage absorption | pH control, carbon filter |
| 4,000-5,500 | 1,000 | 8 | DN63 | 750×600×600 | 400 | 1.5 | 500 | Single-stage absorption | pH control, carbon filter |
| 5,500-8,000 | 1,200 | 8 | DN63 | 750×600×600 | 500 | 1.5 | 500 | Single-stage absorption | pH+ORP control, carbon filter |
| 8,000-12,000 | 1,500 | 8 | DN63 | 750×600×600 | 600 | 2.2 | 500 | Two-stage absorption | pH+ORP control, carbon filter |
| 12,000-17,000 | 1,800 | 10 | DN63 | 850×600×700 | 650 | 3 | 500 | Two-stage absorption | pH+ORP control, carbon filter |
| 17,000-21,000 | 2,000 | 10 | DN63 | 850×600×700 | 700 | 4 | 500 | Two-stage absorption | pH+ORP control, carbon filter |
| 21,000-25,000 | 2,200 | 10 | DN63 | 950×600×700 | 750 | 4 | 600 | Two-stage absorption | pH+ORP control, carbon filter |
| 25,000-32,000 | 2,500 | 12 | DN63 | 950×600×700 | 800 | 5.5 | 600 | Three-stage absorption | Full automation, carbon filter |
| 32,000-40,000 | 2,800 | 12 | DN63 | 1,000×700×700 | 900 | 7.5 | 600 | Three-stage absorption | Full automation, carbon filter |
| 40,000+ | 3,000+ | 12+ | DN63 | Custom | Custom | Custom | 600 | Custom configuration | All upgrades available |
Note: All specifications based on design wind speed 1.8m/s. Custom configurations available for air volumes exceeding 215,000 m³/h. All systems are constructed from high-quality polypropylene (PP) for excellent corrosion resistance.
Frequently Asked Questions
Q1: When should I choose a general chemical scrubber vs a dedicated pollutant scrubber?
Choose a general chemical scrubber if you have a mixed exhaust stream with 2-5 different pollutants, each with concentrations below 1500 mg/m³. Choose a dedicated scrubber if you have a single pollutant with concentrations above 1500 mg/m³, or if you have strict emission limits for a specific toxic gas.
Our scrubber selection guide for mixed gases can help you determine the best solution for your specific application.
Q2: How do you configure a chemical scrubber for mixed gases?
We configure the scrubber based on your specific exhaust composition. For acidic gases, we use a sodium hydroxide solution. For alkaline gases like ammonia, we use a sulfuric acid solution. For mixed streams, we may use multiple stages with different absorbents.
Our engineers will perform a detailed analysis of your exhaust gas and recommend the optimal configuration for your facility.
Q3: Can I upgrade my chemical scrubber in the future?
Yes, our modular design allows for easy upgrades. You can add additional treatment stages, increase the packing height, or integrate new components such as activated carbon filters or advanced control systems as your needs change.
This means you can start with a basic system and expand it over time, rather than investing in a completely new system when your facility grows.
Q4: What absorbents are used in chemical scrubbers?
The most common absorbents are sodium hydroxide (NaOH) for acidic gases and sulfuric acid (H₂SO₄) for alkaline gases. We can also use specialized absorbents for specific pollutants such as NOₓ or H₂S.
Our automatic dosing systems maintain the correct absorbent concentration at all times, ensuring consistent removal efficiency and minimizing chemical waste.
Q5: How do I size a chemical scrubber for my facility?
Chemical scrubber sizing depends on three main factors: total exhaust air volume, the types and concentrations of pollutants, and the required outlet emission limits.
Our engineers can provide a detailed sizing calculation based on your specific operating conditions. You can also refer to our chemical scrubber sizing calculation guide for more information.
Q6: How do I handle the wastewater from a chemical scrubber?
The wastewater from a chemical scrubber contains dissolved salts from the neutralization reaction. The specific treatment requirements depend on the pollutants being removed and local discharge regulations.
Most facilities either send the wastewater to their existing industrial wastewater treatment plant or use a dedicated neutralization system. Our engineers will help you develop a wastewater management plan that meets your local regulations.
Q7: What maintenance does a chemical scrubber require?
With proper operation, our chemical scrubbers require minimal maintenance. We recommend daily checks of pH levels and liquid levels, weekly inspections of spray nozzles and packing, and quarterly calibration of sensors.
A complete annual service, including pump inspection and electrical system testing, is also recommended. Download our chemical scrubber maintenance checklist for a detailed schedule.
Q8: What are the most common chemical scrubber problems?
The most common issues are nozzle clogging, packing fouling, and pH control drift. Nozzle clogging can be prevented by regular maintenance and proper filtration of the scrubbing liquid.
Packing fouling is usually caused by salt crystallization from the absorption reaction. Regular backwashing and proper blowdown management can prevent this issue. For troubleshooting guidance, see this comprehensive guide on common chemical scrubber troubleshooting.
Q9: Are your chemical scrubbers compliant with global regulations?
Yes, our chemical scrubbers are designed to meet or exceed all relevant global regulations, including EPA 40 CFR Part 60, OSHA industrial chemical exposure limits, EU BREF, and India CPCB standards.
Our systems have been installed in over 30 countries and have a proven track record of compliance with all major environmental and safety standards.
Q10: What is the delivery time for a chemical scrubber?
Standard modular chemical scrubbers are delivered within 7-10 days of order confirmation. Custom configurations may take 2-3 weeks, depending on the complexity of the system.
We also offer expedited delivery options for urgent projects. Contact our sales team for more information about delivery times for your specific order.
About the Author & Our Expertise
Written by Corbin Deng, Process Engineer
12 years of experience in industrial air pollution control systems design
XICHENG EP LTD is a leading manufacturer of industrial environmental protection equipment based in Shenzhen, China. With 16 years of specialized experience in wet scrubber technology, we have delivered over 500 systems to customers in more than 30 countries worldwide.
Our team of experienced engineers provides complete turnkey solutions for both general and dedicated air pollution control systems. We are committed to delivering high-quality, reliable equipment that helps our customers meet their environmental compliance goals at an affordable price.
Recent Chemical Scrubber Installation References
- Guangdong Electronics Factory: 12,000 m³/h chemical scrubber for mixed acid fumes
- Malaysia Food Processing Plant: 8,000 m³/h system for odor and acid gas treatment
- Singapore University Lab: 5,000 m³/h modular scrubber for laboratory ventilation
Certifications
- ISO 9001:2015 Quality Management System
- CE Marking for European Union
- China Environmental Protection Product Certification
