High-temperature HEPA filter

1. Product Introduction

Shenzhen Mingyang Purification Technology Co., Ltd. With over 20 years of deep involvement in the air filtration field, we focus on R&D and production of special air filters suitable for harsh conditions. The high-temperature HEPA filter, as a core customized product, is designed for air purification needs in high-temperature environments and is a terminal filtration device with high temperature resistance, high stability, and high precision in air purification systems.

Mingyang high-temperature HEPA filter breaks through the temperature limits of conventional HEPA filters, available in three temperature grades: ≤250°C, ≤350°C, and ≤500°C. It is manufactured in strict accordance with the national standard GB/T 14295-2019 "Air Filters" and ISO 14644 international standards. Filtration efficiencies cover H13 (99.97%) and H14 (99.995%). It uses high-temperature-resistant glass fiber filter media and high-temperature sealant, paired with a stainless steel frame and high-temperature-resistant separators, ensuring long-term stable operation under complex conditions such as high temperature, high humidity, and high dust, without deformation, melting, or leakage risks. The product is widely used in high-temperature air purification scenarios such as drying equipment, high-temperature ovens, industrial kilns, waste gas treatment, and new energy battery production, perfectly solving the industry pain point that conventional HEPA filters cannot adapt to high-temperature environments. It also supports customization of non-standard sizes, temperature grades, and sealing methods to fully meet the personalized filtration needs of different high-temperature conditions.

2. Key Product Features

• : 2.1 Ultra-wide temperature range, suitable for all high-temperature conditions: Available in three temperature grades: 250°C, 350°C, and 500°C, enabling stable long-term operation in high-temperature environments. It breaks the conventional HEPA filter limit of ≤80°C, making it suitable for various high-temperature air purification scenarios such as drying, kilns, and exhaust gas treatment.
• : 2.2 High-temperature specialty filter media with non-degrading filtration precision: Made of imported high-temperature resistant fiberglass filter media, treated with high-temperature setting to prevent deformation and melting. It maintains stable filtration efficiency at H13/H14 levels for particles ≥0.3μm, including dust, bacteria, and smoke, with no efficiency degradation over long-term operation.
• : 2.3 Fully high-temperature resistant structure, zero leakage risk: The frame is made of 304/316L stainless steel, resistant to high temperature, corrosion, and deformation; separators use high-temperature-resistant ceramic fiber/metal spacers; sealant uses high-temperature-resistant silicone; the entire structure has no high-temperature melting points, ensuring 100% airflow passes through the filter media without short-circuiting or leakage.
• 2.4 High Airflow, Low Resistance, Energy Efficient: The filter media uses high-precision pleating to maximize effective filtration area, maintaining low resistance (initial resistance ≤180Pa) under high-temperature conditions. This reduces fan load and energy consumption, ensuring stable long-term operation in high-temperature air supply systems.
• : 2.5 Corrosion and aging resistant, long service life: The stainless steel frame and high-temperature resistant filter media offer excellent corrosion and aging resistance, ensuring no rust or aging in harsh conditions like high temperature, high humidity, and acid/alkali exhaust. Compared to standard HEPA filters, service life is extended by 3-5 times, significantly reducing maintenance costs.

3. Product Applications

3.1 Industrial High-Temperature Drying and Heat Treatment Scenarios

: High-temperature air purification for industrial ovens, high-temperature drying furnaces, and heat treatment kilns. It filters dust and particles generated during drying, ensuring product surface cleanliness. Suitable for electronic component drying, food drying, and metal part heat treatment.

3.2 Exhaust Gas Treatment and Environmental Purification Systems

Used as front-end/terminal high-efficiency filtration in industrial waste gas treatment equipment (such as high-temperature activated carbon adsorption towers, catalytic combustion equipment, RTO/RCO waste gas incinerators) to intercept dust and impurities in waste gas, protect downstream precision treatment equipment, extend equipment life, and meet environmental emission requirements.

3.3 New Energy and High-End Manufacturing Industries

: Air purification for high-temperature drying lines in new energy battery production workshops, photovoltaic module manufacturing, and semiconductor material high-temperature processing. Provides a sterile and dust-free high-temperature production environment, improving product yield.

3.4 High-Temperature Conditions in Chemical and Metallurgical Industries

: Exhaust gas treatment for high-temperature reactors in chemical workshops, high-temperature flue gas purification in metallurgy, and high-temperature air filtration in glass manufacturing lines. Suitable for harsh industrial conditions involving high temperature, high corrosion, and high dust.

4. Product Technical Parameters

4.1 Basic General Parameters

: 4.2 Common specifications rated airflow parameters (taking ≤350°C series as an example)

Note: 1. The 250°C series is suitable for conventional high-temperature conditions, while the 350°C/500°C series are suitable for ultra-high temperature conditions. Customization based on actual operating temperature is available; 2. The above are common specifications. Shenzhen Mingyang Purification can customize non-standard sizes, frame materials, and temperature grades according to customer needs.

5. FAQ

: 5.1 How to choose between high-temperature HEPA filters and standard HEPA filters?

If the operating environment temperature is ≤80°C, choose ordinary HEPA filters for lower cost; if the operating environment temperature is >80°C, select a 250°C/350°C/500°C high-temperature HEPA filter based on the actual temperature to avoid filter media melting and frame deformation, ensuring filtration effectiveness and equipment safety.

: 5.2 What is the replacement cycle for high-temperature HEPA filters?

The replacement cycle should be determined based on the dust content and temperature of the working conditions: under conventional high-temperature clean conditions, replace every 12-18 months; under high-dust high-temperature conditions, replace every 6-12 months; when the resistance reaches the final resistance (400-450Pa), replace immediately regardless of usage time to avoid affecting the high-temperature air supply system.

: 5.3 Can high-temperature HEPA filters be cleaned and reused?

Do not wash or reuse. The high-temperature filter media has a precise structure; washing will cause deformation and fiber shedding, significantly reducing filtration efficiency; high-temperature baking will damage the filter media structure, leading to air leakage and dust leakage risks. It is a disposable high-efficiency filter device and should be replaced directly upon expiration.

: 5.4 How to choose the appropriate temperature grade based on operating temperature?

1. Conventional high-temperature conditions (≤250°C, such as ordinary drying ovens, food drying lines): choose ≤250°C series for high cost performance; 2. Medium-high temperature conditions (250°C-350°C, such as new energy battery drying, catalytic combustion equipment): choose ≤350°C series; 3. Ultra-high temperature conditions (350°C-500°C, such as kilns, RTO waste gas incinerators): choose ≤500°C series. Mingyang can customize products with higher temperature grades.

: 5.5 What special requirements are there for the sealing structure of high-temperature HEPA filters?

: High-temperature HEPA filters use high-temperature resistant silicone sealant that bonds tightly with the filter media and frame without gaps. During installation, high-temperature resistant gaskets must be used to ensure no air leakage at the interface, preventing hot air bypass and maintaining cleanliness.

6. Brand & Service Guarantee

Shenzhen Mingyang Purification Technology Co., Ltd. As a professional domestic manufacturer of special air filters, we have a dedicated R&D team and production line for high-temperature HEPA filters, equipped with a high-temperature performance testing laboratory that can simulate extreme conditions from -50°C to 500°C for product testing, ensuring the temperature stability and filtration accuracy of each product.

For high-temperature HEPA filters, Mingyang offers: Operating temperature selection guidance, non-standard customization, high-temperature installation technical support, and rapid after-sales response.One-stop service. The professional technical team will accurately recommend the optimal temperature grade and model based on parameters such as customer's operating temperature, air volume, dust content, and installation space. It supports full customization of stainless steel frames, different filter media thicknesses, and non-standard sizes, and provides product installation drawings and high-temperature condition operation and maintenance manuals to ensure stable product operation under high-temperature conditions.

All Mingyang high-temperature HEPA filters undergo sodium flame efficiency testing, high-temperature stability testing, and sealing testing before leaving the factory, with a 100% pass rate. With stable product quality and a comprehensive service system, Mingyang has become a core supplier of high-temperature air purification for industries such as electronics, new energy, chemicals, and metallurgy, providing reliable high-temperature purification filtration solutions for customers.