A forced cooling reduction distillation furnace and its manufacturing method

Abstract

The invention discloses a forced-cooling reduction distillation furnace and a manufacturing method thereof. The gas outlet of the reduction distillation furnace and the vacuum port for vacuuming are arranged at the bottom of the furnace hearth of the reduction distillation furnace. The internally connected air inlet is set on the upper part of the reduction distillation furnace, and an induced draft fan is installed on the outlet pipe connected to the air outlet. Through the forced air induction of the induced draft fan, the cooling air flows from the upper part of the furnace hearth of the reduction distillation furnace to the lower part. To carry out forced cooling to the reducing distillation tank installed on the reducing distillation furnace. The present invention introduces cold air from the upper part of the reduction distillation furnace through the induced draft fan, and makes it flow out from the lower part, so that the reaction surface at the upper part of the reduction distillation tank can be effectively cooled, and the cooling air after heat exchange becomes a hot air flow to the lower part of the reduction distillation tank, which is beneficial to the heating and insulation of the reduction distillation tank bottom. The invention has the advantages of good cooling effect and high cooling efficiency.

Description

technical field [0001] The invention relates to a forced-cooling reducing distillation furnace for producing sponge titanium and a manufacturing method thereof, belonging to the technical field of reducing distillation furnace production. Background technique [0002] At present, the production process of sponge titanium requires the use of Mg liquid to convert TiCl 4 The reduction of Ti in the reaction surface requires the temperature of the reaction surface to be lower than 1000 °C. This reaction is completed in a reduction still composed of a reduction distillation furnace and a reduction distillation tank, and the temperature adjustment needs to be realized by using a reduction distillation furnace on the periphery of the reduction distillation tank. Since the reduction reaction is an exothermic reaction, the temperature of the reaction surface is easily overheated, so the reduction distillation furnace should consider cooling the reduction distillation tank at this pla...

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Problems solved by technology

The disadvantages of this structure are: 1) the cooling air adopts natural cooling method, the cooling effect is not good, and overheating phenomenon often occurs, so that there are more wall-climbing titanium on the wall of the reduction distillation tank, which affects the product quality; 2) the cooling air is from the reduction The air flow is unreasonable. On the one hand, the high-temperature air is directly discharged after being heated, causing heat waste; Heating to keep warm; 3) Since the reduction reaction is carried out at the interface of the two liquids, as the reaction progresses, the reaction surface gradually rises, so the electric heater arranged in the reaction section is required to be divided as carefully as possible to meet the temperature change requirements , but the heating control in the prior art is generally rough, and the heating wires are not grouped, so the heating effect is not ideal; 4) Due to the large number of air outlets, a certain space needs to be occupied, and the distance between the air inlet and outlet It cannot be too short, so that the arrangement and number of layers of the air inlet are limited, which is not conducive to the cooling of the air inlet in sections; 5) The vacuum tube in the furnace is generally arranged in the middle of the furnace, which makes the working environment of the device harsh and leads to a large amount of heat loss. drain

Obviously, the existing reducing distillation furnace is not ideal enough

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