Cooling crystallization tanks, chilled brine tanks, refrigeration units, plate and frame filter presses, and control cabinets together constitute a complete low-temperature dewaxing and fractionation system. It covers cooling, crystal growth to solid-liquid separation, ensuring process consistency, energy efficiency, and ease of operation.

Main Machines.

• Crystallization and Maturation Tanks (quantity and specifications can be customized): Refined oils are stored inside, providing space for the slow cooling of animal fats, allowing the higher melting point wax components to crystallize and separate from the liquid oil. The tank is equipped with cooling coils and an agitator to gradually lower the oil temperature. The cooling and crystallization process can be continuously stirred at low speed to increase the contact area between the wax crystals and the oil, forming larger crystals that are easier to filter.
• Refrigerated Brine Tank: Provides circulating cold brine. The brine is cooled to extremely low temperatures in the refrigeration unit, and the chilled brine exchanges heat with the grease through the jacket inside the cooling pipe. The brine, having absorbed heat and increased in temperature, flows back to the refrigeration unit for recooling, forming a closed-loop system that rapidly cools the oil.
• Refrigeration Unit: Cools the coolant (such as chilled brine or ethylene glycol solution) to a specific temperature (e.g., 0℃~10℃, or even lower), cooling the hot raw oil through the jacket or internal coils of the cooling tank. Precise and controllable cooling causes high-melting-point, solid waxes and solid fats in the oil to solidify and precipitate, forming crystals for subsequent filtration and separation.
• Dewaxed Oil Tank: Collects filtered oil after wax separation.
• Bonyeza Kichujio cha Bamba na Fremu: Consists of multiple layers of filter plates, filter frames, filter cloth, and a pressing device (hydraulic system) to form a filtration chamber. The matured “wax-containing oil” is fed into a filter press, and the mixture passes through multiple layers of filter cloth. Under controlled pressure, solid waxes gradually accumulate on the filter cloth, forming a high-solids-content filter cake. The solid waxes are retained as the filter cake, while the clear dewaxed oil permeates out.
• Central Control Cabinet: The “brain” and “nerve center” of the entire production line, primarily responsible for automating equipment operation, precisely controlling key process parameters (such as temperature, pressure, flow rate, and time), ensuring safe production, and optimizing energy utilization. By using components such as PLCs and frequency converters, the system coordinates the execution and detection elements, including motors, valves, and sensors (temperature probes, pressure transmitters, and level gauges), to ensure the stability, efficiency, and accuracy of the dewaxing and fractionation (crystallization and filtration) processes. It also provides necessary overload and short-circuit protection to prevent equipment damage.

  

Auxiliary Equipment.

• Radiator: Discharges heat from the refrigeration unit to ensure stable operation.
• Heat Exchanger: Maintains accurate cooling-and-heating cycles required during crystallization and reheating. Provides circulating cold brine for precise and stable temperature control during cooling and crystal growth.
• Wax Slurry Tank (Wax Paste Tank): Holds separated wax paste or solid slurry for collection and reuse.
• Power Pumps: Power Pumps: These drive the circulation and transport in the refrigeration, brine, and filtration systems. Gear pumps provide power for grease transport; brine pumps provide power for circulating cold brine; diaphragm pumps transport cryogenic fluids. Specific configurations are based on customized requirements.