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China Vacuum Calciner Factory - Advanced Cleaning Equipment Suppliers for Chemical Fibers and Filter Elements

The vacuum calciner is an advanced cleaning solution designed for chemical fiber components and filter elements, ideal for suppliers and manufacturers in China. This state-of-the-art equipment is perfect for cleaning standard and shaped spinnerets used in the production of polyester, nylon, and polypropylene fibers, as well as fine and ultrafine denier spinneret assembly housings. It effectively cleans filter elements, surpassing traditional methods like calcination, fluidized bed cleaning, TEG alcoholysis cleaning, and salt bath cleaning. One of the key advantages of the vacuum calciner is its sealed chamber design, which creates a vacuum with limited fresh air supply. This innovative approach allows chemical fiber polymers to crack and coke at low oxygen levels, mitigating the risks associated with open flames and high temperatures that can lead to indoor pollution. The temperature within the chamber is precisely controlled to maintain an optimal cleaning process, ensuring that cleaned components achieve a pristine surface and unobstructed spinneret holes. Additionally, the pressure used during vacuum cleaning is significantly lower compared to TEG alcoholysis cleaning methods, resulting in filter elements that enjoy an extended service life. The low oxygen content within the vacuum chamber protects the workpiece from damage and oxidation, preserving its metallographic structure and original metallic luster. With customizable cleaning procedures, users can select the perfect method based on their specific process requirements. Discover the benefits of partnering with reliable suppliers and manufacturers in China to enhance your cleaning operations with our innovative vacuum calciner.
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    Technical Parameters

    Vacuum Calciner Working Principles

    The vacuum calcining furnace operates on the thermal breakdown characteristics of chemical fiber polymers, which melt near 300°C, crack and coke above 300°C without air, and fully oxidize above 400°C under vacuum with trace oxygen.

    Stage 1: Initial Melting (~300°C)

    The workpiece is heated to around 300°C. Most polymers melt and drain into the bottom waste collection tank, leaving minimal polymer residue and ash inside micropores.

    Stage 2: Vacuum Oxidation (400–500°C)

    The furnace heats up to 400–500°C according to process settings. The vacuum pump starts, introducing minimal air to fully oxidize residual polymers into CO₂ and water vapor.

    Stage 3: Water Spray Scrubbing

    Suspended ash and water vapor pass through a water spray scrubber driven by the vacuum pump, washing the impurities cleanly out of the furnace with water.

    Eco-Friendly & Low Emission

    The entire operation discharges no polluting gases. Any outdoor emissions consist solely of trace amounts of carbon dioxide and minimal ash carried away by the scrubber water.

    Frequently Asked Questions (FAQ)

    1. What is the fundamental working principle of a vacuum calciner?
    It utilizes the thermal properties of polymers: melting around 300°C, cracking and coking in air-isolated conditions above 300°C, and fully oxidizing above 400°C under vacuum conditions with trace oxygen.
    2. How is bulk polymer removed from the workpiece during the first stage?
    The workpiece is heated to roughly 300°C, causing the majority of surface polymers to melt and flow directly into the bottom waste collection tank.
    3. What happens when the furnace temperature reaches 400–500°C?
    At 400–500°C, the vacuum pump activates and introduces a controlled amount of air, fully oxidizing the remaining polymer into carbon dioxide and water vapor.
    4. How are ash and vapor cleaned from the furnace?
    Floating ash and water vapor are sprayed and washed via a water spray scrubber system connected to the vacuum pump, then safely evacuated and flushed away by water.
    5. Does the vacuum calcining process emit harmful industrial exhaust?
    No. The entire process does not emit polluting gases; only a small amount of carbon dioxide is discharged outdoors, with negligible ash carried away by the water scrubber.