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vacuum calciner.jpg

China Suppliers Factory Horizontal Vertical Vacuum Calciner for Chemical Fiber Components and Filter Element Cleaning

The vacuum calciner is an innovative equipment designed specifically for cleaning chemical fiber components and filter elements. Manufactured in China by leading suppliers and factories, this advanced device is perfect for effectively cleaning standard and shaped spinnerets used in polyester, nylon, and polypropylene fibers, as well as fine and ultrafine denier spinneret assembly housings, Unlike traditional methods such as calcination, fluidized bed cleaning, TEG alcoholysis cleaning, and salt bath cleaning, the vacuum calciner addresses common issues related to open flames, excessive heating, and indoor pollution within the cleaning chamber. Featuring a sealed chamber, it creates a vacuum with a limited supply of fresh air, which enables chemical fiber polymers to crack and coking under low oxygen conditions, ensuring optimal cleaning results, The temperature within the chamber remains consistently controlled within the specified process range, guaranteeing that the cleaned components retain a pristine surface and smooth spinneret holes. Additionally, the pressure applied during the vacuum cleaning process is notably lower than that of TEG alcoholysis cleaning, leading to filter elements that boast an extended service life, The low oxygen environment in the vacuum chamber effectively prevents damage and oxidation to the metallographic structure of the workpieces, preserving their original metallic sheen. Manufacturers can choose from various cleaning procedures tailored to their specific process requirements, asserting the vacuum calciner's position as a crucial asset in the production line of chemical fiber components
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    Technical Parameters

    Vacuum Calciner Working Principles

    The vacuum calcining furnace utilizes the characteristics of chemical fiber polymers that can melt at around 300℃, crack and coke when isolated from air above 300℃, and produce a variety of cracking products. Above 400℃, in the presence of a small amount of oxygen and a certain vacuum condition, they can be completely oxidized.

    1

    Melting Phase

    The workpiece is first heated to around 300℃, melting the large amount of polymer on its surface. The melted polymer flows directly into the waste collection tank at the bottom, leaving only a small amount of polymer and ash in the micropores.

    2

    Oxidation Phase

    The furnace temperature is raised to 400-500℃ (adjustable according to process requirements). The vacuum pump is turned on, and a small amount of air is introduced to fully oxidize the remaining polymer into carbon dioxide and water.

    3

    Scrubbing & Discharge

    Floating ash and water vapor inside the furnace are sprayed and washed by the vacuum pump through a water spray scrubber, then safely pumped out of the furnace and carried away by water.

    Eco-Friendly Operation

    The entire working process does not emit any polluting gas. The smoke and ash are washed and discharged outdoors. Even then, only a small amount of carbon dioxide is released, and the ash carried away by the water is extremely minimal.

    Frequently Asked Questions

    Q: At what temperature does the polymer melt and crack?

    Chemical fiber polymers melt at around 300℃. When isolated from air above 300℃, they crack and coke, producing a variety of cracking products.

    Q: Where does the melted polymer go during the first phase?

    The workpiece is heated to around 300℃, causing the majority of the polymer on the surface to melt and flow into the waste collection tank located at the bottom of the furnace.

    Q: How are the remaining polymers in the micropores removed?

    The furnace temperature is raised to 400-500℃ under vacuum conditions, and a small amount of air is introduced to fully oxidize the remaining polymer into carbon dioxide and water.

    Q: How are ash and water vapor cleaned from the furnace?

    The floating ash and water vapor are sprayed and washed by the vacuum pump through a water spray scrubber, and are then pumped out of the furnace and carried away by water.

    Q: Is the vacuum calcination process environmentally friendly?

    Yes. The entire process does not emit polluting gases. The smoke and ash are discharged outdoors after being washed, resulting in only a small amount of carbon dioxide emission and minimal ash carried away by the water.