Frequently Asked Questions (FAQ)

1. What VOC Components Can CADAIR VOC Treatment Equipment Handle?
CADAIR VOC treatment systems are designed to handle a wide range of industrial volatile organic compounds (VOCs), widely used in coating, printing, chemical, electronics, pharmaceutical, and manufacturing industries.

Applicable VOC Types
Suitable for organic solvents with boiling points between 40°C–200°C, including:

Aromatic Hydrocarbons
Benzene
Toluene
Xylene
Ethylbenzene
Styrene (requires special design considerations)

Esters
Ethyl acetate
Butyl acetate
N-propyl acetate

Ketones
Acetone
MEK (Methyl Ethyl Ketone)
MIBK (Methyl Isobutyl Ketone)
Cyclohexanone

Alcohols
IPA (Isopropyl Alcohol)
Ethanol
Butanol

Other VOCs
N-hexane
Propylene glycol methyl ether
Ether-based organic exhaust gases

Substances Requiring Special Attention
Limited Treatment Efficiency
Formaldehyde
Certain mercaptans and sulfides

Not Recommended
Hydrogen sulfide
Carbon disulfide
Inorganic acid gases

Require Special Engineering Design
Easily polymerized olefins and alkynes
Styrene
PMMA and similar compounds in UV coatings

For complex exhaust compositions, we recommend providing a gas analysis report for professional engineering evaluation.

2. Which Industries Are Suitable for CADAIR VOC Treatment Systems?
CADAIR VOC solutions are widely applied across various industries, including:

Aerospace & Aircraft Manufacturing
Shipbuilding
Automotive Manufacturing
Container Manufacturing
Semiconductor / Electronics / 3C Industry
Chemical & Petrochemical Industry
Pharmaceutical Industry
Printing & Packaging
Paints, Inks & Adhesives
Furniture Coating
Rubber & Tire Industry
Carbon Fiber Manufacturing
Coking Industry
Coal Chemical Industry
Hazardous Waste Treatment

We provide customized VOC treatment solutions tailored to different production lines and industrial processes.

3. What VOC Emission Standards Can CADAIR Systems Achieve?
CADAIR provides customized solutions designed to meet national regulations, local standards, and industry-specific environmental requirements.

Typical Compliance Performance
Aerospace Manufacturing Projects
Emission concentration ≤ 20 mg/m³

Chemical Industry / RTO Projects
Emission concentration < 60 mg/m³

Shipbuilding Industry
Benzene < 1 mg/m³
Toluene < 3 mg/m³
Xylene < 25 mg/m³
NMHC (Non-Methane Hydrocarbons) < 50 mg/m³

Special Pollutants
Dichloromethane < 15 mg/m³
Methanol < 50 mg/m³

System design is based on:

Local environmental regulations
VOC composition
Airflow volume
VOC concentration
Emission limits

We support Chinese national standards, local regulations, and international environmental compliance requirements.

4. What Is the VOC Treatment Efficiency?
Different technologies provide different purification efficiencies:

Technology
Treatment Efficiency
RTO (Regenerative Thermal Oxidizer)
≥99%
RCO (Regenerative Catalytic Oxidizer)
≥98%
Zeolite Rotor Concentrator
90%–99%
K-Filter Solvent Recovery System
≥95%
Overall System Efficiency
Up to 99.5%
Actual efficiency depends on VOC concentration, temperature, humidity, and overall system design.

5. How to Choose the Right VOC Treatment Technology?
Technology selection depends on:

VOC concentration
Airflow volume
Gas composition
Temperature and humidity
Safety requirements
Energy consumption and operating cost

Recommended Selection Logic
High Concentration + Low Airflow
Suitable technologies:

RTO
TO
CO
RCO

Low Concentration + High Airflow
Suitable technologies:

Zeolite rotor concentration + RTO
Adsorption concentration combustion systems

Solvent Recovery Applications
Recommended:

K-Filter solvent recovery systems

Polymerizable VOCs
Require special engineering design. Zeolite rotors should be carefully evaluated.

Information Required for Quotation
Please provide:

Airflow volume (m³/h or Nm³/h)
VOC composition and ratio
Concentration range
Temperature and humidity
Emission standards

The more complete the information, the more accurate the solution.

6. What Is the Difference Between RTO and RCO?
Comparison
RTO
RCO
Oxidation Temperature
Around 760°C
300–550°C
Thermal Efficiency
>95%
>95%
Removal Efficiency
99%
98%
Energy Consumption
Low
Lower
Open Flame
Yes
No
Maintenance Cost
Lower
Higher
Applicability
Broad
Requires suitable gas composition
Selection Recommendations
Complex exhaust composition → Choose RTO
Lower energy consumption priority → Choose RCO
Catalyst poisoning substances present → Recommend RTO

7. Are CADAIR VOC Systems Energy Efficient?
Yes. CADAIR focuses on low-energy VOC treatment technologies.

Energy-Saving Advantages
Low-Temperature Zeolite Rotor Technology
Approximately 40% energy savings
Approximately 27% lower investment cost

RTO/RCO Regenerative Technology
Thermal efficiency >95%
Self-sustaining thermal balance operation

Internal Circulation + RTO Solutions
Especially suitable for the electronics and 3C industry, significantly reducing airflow demand and operating costs.

8. Do You Provide Overseas Installation and Commissioning Services?
Yes. CADAIR provides worldwide project support.

Overseas Services Include
Installation guidance
On-site commissioning
Operator training
Remote technical support
After-sales inspections

Our professional international engineering team supports global project implementation.

9. What Information Is Required for Equipment Quotation?
To provide an accurate quotation, please provide:

Airflow volume (m³/h or Nm³/h)
VOC composition and proportion
VOC concentration range
Temperature and humidity
Emission standard requirements
Explosion-proof requirements
Solvent recovery requirements

More detailed information enables more accurate system design.

10. What Is the Equipment Delivery Time?
Delivery time depends on:

Process complexity
Equipment specifications
Customization requirements
Current production schedule

Large customized projects generally require longer lead times than standard equipment. Please contact our engineering team for detailed evaluation.

11. What After-Sales Services Does CADAIR Provide?
CADAIR provides long-term after-sales support and lifetime service.

After-Sales Services Include
Regular inspections
Equipment maintenance
System training
Process optimization
Solvent replacement upgrade recommendations
Laboratory analysis support
Rapid-response technical support

We believe that “real service begins after delivery.”

12. Can the System Handle Flammable and Explosive Exhaust Gases?
Yes.

CADAIR systems include comprehensive explosion-proof safety designs, including:

Flame arresters
Explosion relief doors
Rupture discs
Alarm interlock systems
Emergency bypass systems
Multiple safety control systems

Suitable for:

Flammable VOC exhaust gases
Explosion-proof areas
Petrochemical and coking industries

Customized explosion-proof ratings are also available.

13. Does CADAIR Support Customized VOC Treatment Systems?
Yes. We provide highly customized engineering solutions.

Customizable Features
Plant layout
Airflow and concentration
Exhaust gas characteristics
Energy-saving requirements
Local environmental regulations
Project budget

Available systems include:

Zeolite rotor systems
RTO/RCO systems
Pretreatment systems
Solvent recovery systems
Turnkey engineering projects

14. Why Choose CADAIR VOC Treatment Solutions?
Extensive Industry Experience
10+ years of VOC treatment expertise
1,300+ equipment installations worldwide

Comprehensive Technology Portfolio
Including:

RTO
RCO
CO
Zeolite rotor systems
K-Filter solvent recovery systems

Industry-Leading Energy-Saving Technologies
Low-temperature rotor technology delivers approximately 40% energy savings.

Global Service Capability
Supporting projects across multiple countries and regions.

Complete After-Sales Service System
Lifetime support with rapid-response service.

Proven Large-Scale Industry References
Serving leading companies in:

Petrochemical industry
Aerospace manufacturing
Shipbuilding
Electronics & semiconductor industries

Comprehensive Certifications & Qualifications
Holding more than 260 certifications, honors, and nationally recognized qualifications.

Contact CADAIR
Looking for a customized VOC treatment solution for your factory or industrial project?

Contact CADAIR today for:

Technical consultation
VOC system design
Energy-saving solutions
Overseas project support
Customized quotations

CADAIR — Professional Industrial VOC Treatment Solutions Provider.