Hanertech's static melt crystallizer is a device that uses vertically arranged special-shaped plates, employing an internally circulating heat transfer medium (HTM) to either heat or cool the system. Steel plates are suspended within the molten feed material. As the stagnant melt cools slowly below the freezing point of the HTM, crystals begin to grow on the plates, enabling the separation and purification of the target substance.
Cooling: The material enters the heat exchanger from the top, filling the interior completely up to the feed hopper, ensuring the material submerges the heat transfer module. At this point, cooling water flows into the module plates from the bottom and exits through the upper section of the heat exchanger. Meanwhile, the discharge rate of the feeder at the top of the feed hopper is adjusted according to the incoming material volume, maintaining a consistent material level within the hopper. <br/> The material in operation flows uniformly and as a whole between the heat-transfer module plates, achieving cooling by means of indirect heat exchange with the cooling water inside the heat-transfer plates.
The SGG gas-to-gas heat exchanger utilizes Pillow plate heat transfer elements arranged at specific intervals. Inside the plates are clean gas channels, while the outer surfaces accommodate the process gas (flue gas) flow. The spacing between the heat transfer plates can be flexibly designed and adjusted according to the operating conditions. Combined with a wide-channel design, the Pillow plate heat transfer elements not only deliver exceptionally high heat transfer efficiency but also feature low pressure drop, excellent resistance to high temperatures and pressures, durability against dust accumulation, and ease of cleaning. <br/> Significantly superior technical features compared to conventional heat exchangers.
Cold water flows evenly down the outer surface of the pillow-shaped plate in a thin film, thanks to the distribution trough at the top. Meanwhile, the refrigerant inside the plate enters the pillow-shaped structure and absorbs heat as it evaporates, effectively cooling and enabling ice formation. Compared to immersion-style ice-making, this method features a higher evaporation temperature and is more energy-efficient.
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