The melt blown processrequiresa large amount of hot air. Typically, air can be heated using boiler steam, flue gas, thermal oil, etc., but electric heating is often favored for its low initial investment, cleanliness, ease of operation, and high thermal efficiency.
The working principle of the air electric heater is that during operation, the low-temperature fluid medium enters its input port through the pipeline under pressure, flows along the specific heat exchange channels inside the electric heating container, following the path designed based on the fluid thermodynamics principles of the air electric heater, and carries away the high-temperature thermal energy generated by the electric heating elements during operation, thereby raising the temperature of the medium being heated, and the outlet of the electric heater obtains the high-temperature medium required by the process.
The working principle of the air electric heater used in the melt blown process is that the compressed air output from the air compressor is dehumidified and filtered, then delivered to the air electric heater for heating, and then sent to the melt blown die head assembly.The air electric heateris a pressure vessel and must also resist the oxidation of high-temperature air, so the material must be stainless steel. The heating element of the air electric heateris a stainless steel electric heating tube. Multiple baffles are set inside the heater cavity to extend the residence time of air in theelectric heatercavity, thereby improving heat exchange efficiency. Appropriately increasing the number of heating tubes and increasing the installed power of theair electric heatercan shorten the start-up heating time of the production line. The melt blown process requires high temperature control accuracy for the draftingair electric heater, and the drafting air temperature must be stable within ±1℃.
