Energy-saving vacuum distilling system

Abstract

The invention discloses an energy-saving vacuum distilling system. A distilling crucible (1) and a condensing crystallizing pipe (2) of a distilling furnace system are mutually independent; the upper end of the condensing crystallizing pipe (2) is provided with an auxiliary condensing room (3); spiral resistance heating wires (4) are uniformly arranged on two sides and at the bottom of the distilling crucible (1); and the spiral resistance heating wires (4) form a three-phase triangular loop. By using the distilling furnace system, not only is the reasonable distribution of a temperature field structure achieved, but also an impurity in a distillation raw material can be effectively prevented from being interfused in a crystallized product in the condensing crystallizing pipe, and the electric current of a neutral wire circuit loop of an electric system is greatly decreased, thereby decreasing the energy consumption and the production cost of a unit product and according with the requirements on energy saving and environmental protection. The distilling system not only can be applicable to a distillation process for tellurium, but also can be used in a distillation purification process of metals such as magnesium or zinc and the like simultaneously, and has an extremely wide scope of application, and the effect that one machine has multiple functions is achieved truly.

Description

technical field [0001] The invention relates to a vacuum distillation furnace system. Background technique [0002] In the existing distillation furnace system, the distillation crucible and the condensation crystallization tube are usually directly connected and communicated, and the periphery of the distillation crucible and the condensation crystallization tube is uniformly arranged with spiral resistance heating wires, and these spiral resistance heating wires are surrounded by heat preservation Among the materials, the distillation furnace system with this structure mainly has the following disadvantages: [0003] (1) The temperature field distribution of the distillation structure is unreasonable, the energy consumption per unit product is large, and the production capacity is small, and the impurities in the distillation raw materials are easy to enter the condensation crystallization tube and mix into the crystallization product during the distillation process, there...

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Problems solved by technology

[0003] (1) The temperature field distribution of the distillation structure is unreasonable, the energy consumption per unit product is large, and the production capacity is small, and the impurities in the distillation raw materials are easy to enter the condensation crystallization tube and mix into the crystallization product during the distillation process, thereby affecting the purity of the crystallization product and reducing the quality of crystallized products;

[0004] (2) When it is necessary to take out the crystallization product or replace the distillation raw material, the whole distillation crucible and condensation crystallization tube must be removed at the same time, which is very unreasonable in structure and difficult to operate;

[0005] (3) The part of the condensation crystallization tube is easily affected by the resistance heating wire, causing the high-purity distillation product at the lower end of the condensation crystallization tube to fall back into the distillation crucible due to high temperature melting, making it difficult for the condensation crystallization to proceed smoothly. At the same time, the above-mentioned spiral resistance heating The layout structure of wire leads to high energy consumption per unit product in the power system due to the large current of the neutral circuit circuit, thereby increasing the production cost

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