Why is the new composite molding method first introduced?

After the filter element is formed, there is not much difference in appearance, but the production process is completely different, and the purification effect brought by the high or low level of the process is also different from Tianxiang.

Extruded activated carbon: the activated carbon is mixed with ordinary hot-melt resin and then put into a screw extruder for heating and molding. In this production process, the surface of activated carbon is melted and wrapped by hot melt resin at high temperature, blocking the micropores of activated carbon and losing its adsorption effect. The production cost is low and the yield is high. The adsorption capacity is basically 0, without any Catharsis effect. The average price is generally around 3-4 yuan, and coal charcoal or recycled charcoal is often used.

Compressed activated carbon: After mixing the activated carbon powder material with inorganic liquid binder, it is poured into a special mold, compressed and formed with a press machine under high pressure, and dried after the mold is released. This process has a high content of activated carbon, a moderate filtration effect, and the adsorption force is determined by the quality of the carbon material. The adsorption energy efficiency is generally between 20% -50%. However, when using inorganic bonding materials, high-pressure molding must be applied to make it difficult to control the pore size of the filter element, and the pressure drop of the filter element is too large, which affects its use. The average price is generally around 6-18 yuan, and the material is usually coconut shell or coal.

Sintered activated carbon: It is a mixture of activated carbon powder material and polymer hot melt pore forming material, poured into a special mold, and sintered at a high temperature of 200-300 ℃. Due to the open micropores formed by this polymer bonding material in the sintering process, it maintains a holding point with a large specific surface area of activated carbon powder after mixing with activated carbon, resulting in excellent pore forming performance, better filtration effect, and more thorough contact with liquid, The adsorption capacity is determined by the quality and quantity of the carbon material, generally ranging from 80% to 99%. Due to its complex processing technology and limited production capacity, the selling price is generally ≥ 20 yuan. The sintering process generally uses coconut shell activated carbon,

Activated Carbon Fiber (ACF) - a porous carbon that has been activated and treated with traditional activated carbon, which is in the form of powder or particles, while activated carbon fiber is in the form of fibers, filled with micropores and has high production costs. Its ability to adsorb residual chlorine, COD, and VOC volatile organic pollutants in water is higher than that of sintered activated carbon with granular activated carbon, and its adsorption rate is fast and stable. It has faster water flow rate, longer lifespan, and is not easily blocked from water than traditional carbon rods, ACF is the third generation of new adsorption materials, following the widely used powdered activated carbon and granular activated carbon (sintered activated carbon). (The price is generally above 50 yuan)

During the production process, according to different water purification requirements, several types of water purification raw materials are used to prepare the filter element formula. Then, according to the density requirements of the filter element, the raw materials are preprocessed into powder, particle or short fiber shapes, mixed evenly in a water tank, vacuum formed, and dried. Due to this process breaking through the drawbacks of high-temperature extrusion and single material required in traditional "dry forming", more types of water purification raw materials can be used for product production, expanding the range of water purification performance and removing more harmful substances; The special adsorption and bonding process also improves the efficiency of raw material use, greatly increasing the processing capacity; Unique processes are also more conducive to the production of products of different sizes and shapes