How to calculate the size of a recuperative thermal oxidizer?

Introdução

Recuperative thermal oxidizers are widely used in industries to control air pollution. These systems are designed to efficiently destroy volatile organic compounds (VOCs) and hazardous air pollutants (HAPs) through combustion. To ensure the proper functioning of a recuperative thermal oxidizer, it is crucial to accurately calculate its size. In this article, we will explore the various factors and calculations involved in determining the size of a recuperative thermal oxidizer.

Factors Affecting Thermal Oxidizer Sizing

– Process Flow Rate:
– The first step in sizing a recuperative thermal oxidizer is to determine the process flow rate. This parameter represents the volume of polluted air that needs to be treated. It is typically measured in cubic feet per minute (CFM) or cubic meters per hour (m3/h). To calculate the process flow rate, consider the maximum expected emission rate from the process and any potential future expansions.

– Concentration of Pollutants:
– The concentration of pollutants in the process exhaust stream is another crucial factor. It is measured in parts per million by volume (ppmv). Understanding the concentration allows for proper sizing to ensure effective oxidation of the pollutants.

– Heat Content of the Pollutants:
– The heat content of the pollutants is essential to consider when sizing a recuperative thermal oxidizer. This parameter helps determine the amount of fuel required for proper combustion. It is typically measured in British thermal units (BTU) per cubic foot or megajoules per cubic meter.

– Destruction Efficiency:
– The desired destruction efficiency is an important consideration when sizing a thermal oxidizer. This value represents the percentage of pollutants that will be effectively destroyed during the combustion process. Higher destruction efficiencies often require larger thermal oxidizers.

– Temperature Rise:
– The temperature rise is the increase in temperature needed to achieve proper oxidation of the pollutants. It depends on the nature of the pollutants and the desired destruction efficiency. The temperature rise is usually measured in degrees Fahrenheit (¡ãF) or degrees Celsius (¡ãC).

– Residence Time:
– Residence time refers to the duration that the pollutants spend in the thermal oxidizer. It is crucial for complete combustion to occur. Residence time is typically measured in seconds.

Calculating the Size of a Recuperative Thermal Oxidizer

1. Determine the required airflow rate in CFM or m3/h using the process flow rate.

2. Calculate the overall heat load by multiplying the airflow rate with the specific heat of the exhaust gases and the temperature rise.

3. Estimate the required heat recovery efficiency. This value represents the percentage of heat that can be recovered and reused from the exhaust gases. It depends on the design of the thermal oxidizer and the available heat recovery equipment.

4. Calculate the total heat input required by dividing the overall heat load by the estimated heat recovery efficiency.

5. Determine the fuel heating value, which represents the amount of heat energy released from the fuel during combustion. It is typically measured in BTU per standard cubic foot or megajoules per cubic meter.

6. Calculate the fuel flow rate in terms of BTU per hour or megajoules per hour by dividing the total heat input by the fuel heating value.

7. Select a thermal oxidizer system with a capacity that matches or exceeds the calculated fuel flow rate.

Conclusão

Calculating the size of a recuperative thermal oxidizer is a complex process that involves considering various factors such as process flow rate, concentration of pollutants, heat content, destruction efficiency, temperature rise, and residence time. By accurately determining these parameters and following the outlined calculations, you can select an appropriately sized thermal oxidizer for effective pollution control. Remember to consult with experts in the field to ensure the best results for your specific industrial application.


Introdução

We are a high-tech manufacturing company specializing in comprehensive treatment of volatile organic compound (VOC) emissions and carbon reduction energy-saving technologies. Our core technologies include thermal energy, combustion, sealing, and control. We have the capabilities for temperature field simulation, airflow field simulation modeling, ceramic heat storage material performance, molecular sieve adsorption material selection, and VOC high-temperature combustion oxidation testing.

Team and Facilities

We have established RTO technology research and development center and waste gas carbon reduction engineering technology center in Xi’an, as well as a 30,000 square meter production base in Yangling. We are a leading manufacturer in terms of production and sales of RTO equipment and molecular sieve rotary wheel equipment. Our core technical team comes from the Aerospace Liquid Rocket Engine Research Institute. We currently have more than 360 employees, including over 60 research and development technical backbones, including 3 senior engineers, 6 senior engineers, and 108 thermodynamics doctorates.

Produtos principais

Our core products include rotary valve regenerative thermal oxidizer (RTO) and molecular sieve adsorption concentration rotary wheel. With our expertise in environmental protection and thermal energy system engineering, we can provide customers with comprehensive solutions for industrial waste gas treatment, carbon reduction, and thermal energy utilization under various operating conditions.

Certificações, Patentes e Honrarias

We have obtained various certifications and qualifications, such as Intellectual Property Management System Certification, Quality Management System Certification, Environmental Management System Certification, Construction Enterprise Qualification, High-tech Enterprise, and patents for rotary valve regenerative thermal oxidizer, rotary wheel heat storage incineration equipment, and disc-shaped molecular sieve rotary wheel, etc.

Escolhendo o equipamento RTO certo

• Determinar as características dos gases de escape
• Entenda os regulamentos locais e os padrões de emissão
• Avaliar a eficiência energética
• Considere a operação e a manutenção
• Perform budget and cost analysis
• Selecione o tipo apropriado de RTO
• Considere fatores ambientais e de segurança
• Conduct performance testing and verification

Now let’s explain each point in detail:

1. Determine exhaust gas characteristics: Analyze the composition, flow rate, temperature, and pressure of the exhaust gas to accurately size the RTO.

2. Understand local regulations and emission standards: Familiarize yourself with the legal requirements and emission limits in the specific region to ensure compliance.

3. Evaluate energy efficiency: Assess the energy consumption and heat recovery potential of different RTO options to maximize efficiency.

4. Consider operation and maintenance: Take into account factors such as ease of operation, maintenance requirements, and availability of spare parts to ensure smooth operation.

5. Perform budget and cost analysis: Analyze the overall investment and operating costs of different RTO systems to determine the most cost-effective solution.

6. Select the appropriate type of RTO: Consider factors such as flow rate, concentration, and temperature to determine whether a rotary valve or other type of RTO is suitable.

7. Consider environmental and safety factors: Evaluate the impact on the environment and assess safety measures to ensure compliance and minimize risks.

8. Conduct performance testing and verification: Test the performance and efficiency of the chosen RTO system to validate its effectiveness.

Processo de serviço

• Consultation and assessment: Initial consultation, on-site inspection, and needs analysis.
• Design and solution development: Design proposal, simulation modeling, and solution review.
• Production and manufacturing: Custom production, quality control, and factory testing.
• Installation and commissioning: On-site installation, commissioning, and training services.
• After-sales support: Regular maintenance, technical support, and spare parts supply.

Now let’s explain each point in detail:

1. Consultation and assessment: We provide preliminary consultation, conduct on-site inspections, and analyze customer needs to identify the most suitable solution.

2. Design and solution development: Our team designs a comprehensive solution, performs simulation modeling for optimization, and conducts solution review for approval.

3. Production and manufacturing: We customize the production of the RTO equipment, strictly control the quality during the manufacturing process, and conduct thorough factory testing.

4. Installation and commissioning: Our experts oversee the on-site installation, ensure proper commissioning, and provide training services to ensure smooth operation.

5. After-sales support: We offer regular maintenance services to keep the RTO system in optimal condition, provide technical support for any inquiries, and supply spare parts as needed.

With our professional team, we provide tailored RTO solutions as a one-stop-shop for our customers.

Autor: Miya