paddle dryerIt is a dryer that directly contacts materials (organic, inorganic particles or powder materials) with a rotating hollow wedge heating element for heat transfer. It does not require air as a heating medium, the air used is only a carrier, with the purpose of carrying away the evaporated steam.
Working Principle:
paddle dryerIt is a horizontal stirring type dryer mainly based on heat conduction. Its main structure is a W-shaped shell with a jacket, which is equipped with paired hollow low-speed rotating hollow shafts. Several stirring hollow blades are welded on the shafts, and the jacket and hollow stirring blades are both filled with heat carriers. Both heating surfaces heat the material together. Therefore, this type of dryer has outstanding heat transfer rate compared to general conduction type dryers. As needed, this type of dryer can be designed as a double axis or multi axis dryer.
So its role in the chemical and materials industry is reflected as follows:
Pigments and dyes:
Function: Dry various filter cake shaped pigments (such as iron oxide red and titanium dioxide slurry) to obtain uniform powder.
Your life: The paint on your walls, the color of your cars, the dye on your clothes, and the production of their pigments all rely on this drying process.
Inorganic salts and chemicals:
Function: Drying chemical filter cakes such as calcium carbonate, aluminum hydroxide, and precipitated barium sulfate.
Your life: These dried powders are important fillers for plastics, rubber, toothpaste, paper (all plastic products and daily chemical products you use).
Polymer (resin, PVC):
Function: Drying, dehydration, and devolatilization (removal of residual monomers) of wet materials after polymerization reaction.
Your life: Ensuring the purity and stability of plastic raw materials, thereby ensuring the quality and safety of the final plastic products.