Working Principle

• Physical filtration: The pore size on the filter material blocks solid particles, bacteria and other particles and prevents these particles from passing through the filter. Filter materials with different pore sizes can filter particles of different sizes, thus realizing effective separation of particles.

• Chemical adsorption: some filter materials have chemical adsorption function, can adsorb specific harmful substances, such as organic solvents, gas pollutants, etc., so as to achieve the purpose of purifying the air.

• Electrochemical filtration: Using electrochemical principles, specific ions or compounds are migrated to electrodes of different polarities to realize selective separation and filtration of specific substances.

Features

• High-temperature resistant performance: it can be used for a long time in the environment of 250-350℃, and some models can even withstand high temperature up to 400℃.

• High filtration efficiency: the filtration efficiency for 0.3μm particles can reach over 99.97%.

• Low resistance: The reasonably designed pleated layer structure ensures low airflow resistance, which is conducive to air circulation.

• Large dust capacity: able to carry more dust particles and maintain long-term filtration effect.

Use standard

High-temperature-resistant high-efficiency filters with separators should comply with at least the Chinese national standard GBT14295-2019 “air filters” or GB/T13554-2023 “high-efficiency air filters”, or use the latest international standards EN779 (Primary filters, Intermediate filters) or ENI822 (Sub-high efficiency filters, High efficiency filters). These standards stipulate the performance requirements and test methods of the filters to ensure the quality and safety of the filters.

Precautions for use

• Primary filters shall be fixed around the perimeter with potting glue to ensure that they are securely attached to the filter frame.

• The sub-master frame of the medium-effect filter shall be attached with sealing tape on all four sides of one side to enhance the sealing performance of the filter.

• The filtration efficiency should reach 0.3μm,99.99% to meet the filtration requirements in most high temperature environments.

• In the process of installation and maintenance, damage to the filter media should be avoided to avoid affecting the filtration effect.

Application Examples

High-temperature resistant high efficiency filters with septum are used in a wide range of applications, for example, in high-temperature sterilization tunnels or high-temperature drying rooms in pharmaceutical factories, where they can effectively filter out particles such as tar, soot and dust to ensure product quality and the cleanliness of the production environment. In addition, they are also used in ultra-clean ovens in electronics, semiconductor, food processing and other industries, as well as equipment and systems requiring high-temperature air purification.

Maintenance

In order to ensure the long-term effective operation of high-temperature resistant partitioned high-efficiency filters, regular maintenance and upkeep are essential. The resistance and filtration efficiency of the filter should be checked regularly, and damaged filter media or outer frame should be replaced in time. At the same time, it should be avoided to install the filter on high temperature equipment without complete curing, so as not to cause cracking, swelling of the glue and the glue detaching from the outer frame.

Design Features

• Filter particle size: mainly used for filtering air suspended particles above 0.3 micron, can effectively intercept most pollutants.

• Filter material: made of high temperature resistant ultra-fine glass fiber filter paper, with good heat resistance and filtration efficiency.

• Partition design: Corrugated paper partition or aluminum partition maintains equal spacing between each pleated paper to ensure smooth airflow through and enhance the stability of the structure.

• Sealing performance: The filter is sealed around the perimeter with a special high-temperature-resistant sealant to ensure that the entire filter is airtight and prevent leakage.

• Rigorous testing: Each filter undergoes rigorous testing to ensure that its performance meets standards.

Filtration efficiency grade

The filtration efficiency grade of high temperature resistant compartmentalized HEPA filters is generally H13 or H14, which is graded according to the European standard EN1822, meaning that they can capture at least 99.97% of 0.3 micron particles.

Technical Parameters

The technical parameters of high temperature resistant panel filter include but not limited to its specification size, rated airflow, filtering area, dust holding capacity, initial resistance and final resistance.