阅读说明：本技术 一种海绵钛生产中防真空通道堵塞的装置及其工艺 (Device and process for preventing vacuum channel from being blocked in titanium sponge production ) 是由 舒煜 张履国 陈太武 于 2019-12-04 设计创作，主要内容包括：一种海绵钛生产中防真空通道堵塞的装置及其工艺,包括冷凝器、筛板、反应器、氯化镁管、大盖、大盖立管和加热炉；所述的大盖立管设在大盖的中心位置。还原生产结束后,把组装好的反应器、筛板和大盖吊入冷凝器中,在冷凝器中通入冷却水,对接好过道,氯化镁管连接真空系统,然后进行排压,升温到850℃,同时启动低真空进行蒸馏,持续控温850℃和低真空蒸馏生产30小时；到达30小时后,控温900℃-980℃且启动高真空进行蒸馏生产,最后蒸馏结束。本发明取消抽空管,采用氯化镁管进行抽空,减少大盖焊缝,减少产品进气率；缩短蒸馏生产周期10小时左右；节约氩气消耗；节约蒸馏生产电耗；降低操作工的劳动强度,改善工作环境。(A device for preventing vacuum channel from being blocked in the production of titanium sponge and a process thereof comprise a condenser, a sieve plate, a reactor, a magnesium chloride tube, a large cover vertical tube and a heating furnace; the big cover vertical pipe is arranged in the center of the big cover. After the reduction production is finished, the assembled reactor, sieve plate and large cover are hung in a condenser, cooling water is introduced into the condenser, a channel is connected, a magnesium chloride pipe is connected with a vacuum system, then pressure is discharged, the temperature is raised to 850 ℃, simultaneously, low vacuum is started for distillation, the temperature is controlled to 850 ℃ continuously, and the low vacuum distillation production is carried out for 30 hours; and controlling the temperature to be 900-980 ℃ after 30 hours, starting high vacuum to carry out distillation production, and finally finishing distillation. According to the invention, an evacuation pipe is omitted, and the magnesium chloride pipe is adopted for evacuation, so that the welding seams of the large cover are reduced, and the gas inlet rate of the product is reduced; the distillation production period is shortened by about 10 hours; the argon consumption is saved; the power consumption of distillation production is saved; the labor intensity of operators is reduced, and the working environment is improved.)

1. A device for preventing vacuum channel blockage in titanium sponge production comprises a condenser (12), a sieve plate (13), a reactor (14), a magnesium chloride tube (15), a large cover (16), a large cover vertical tube (17) and a heating furnace (18); the method is characterized in that: the big cover stand pipe (17) is arranged at the center of the big cover (16).

2. A process for preventing a device from being blocked by a vacuum channel in the production of titanium sponge is characterized by comprising the following steps: after the reduction production is finished, the assembled reactor (14), sieve plate (13) and large cover (16) are hung in a condenser (12), cooling water is introduced into the condenser (12), a passageway is connected, a magnesium chloride tube (15) is connected with a vacuum system, then pressure is discharged, the temperature is raised to 850 ℃, simultaneously low vacuum is started for distillation, the temperature is controlled to 850 ℃ continuously, and the low vacuum distillation production is carried out for 30 hours; and controlling the temperature to be 900-980 ℃ after 30 hours, starting high vacuum to carry out distillation production, and finally finishing distillation.

Technical Field

The invention relates to titanium sponge production, in particular to a device and a process for preventing vacuum channel blockage in titanium sponge production.

Background

At present, the titanium sponge produced industrially at home and abroad adopts a Kloer method, an inverted U-shaped combination method (shown in figure 1) developed in the furnace type large-scale direction is used for producing the titanium sponge, and the inverted U-shaped combination method is characterized in that the hot end of reduction production is connected with a cold end system for collecting condensate through a transverse passage pipe to form a production system. After the reduction production of the titanium sponge is finished, the hot-end reactor is provided with the titanium sponge, part of magnesium chloride and part of magnesium chloride, the cold-end system is provided with the reactor for collecting the magnesium chloride distilled from the hot end and a small amount of magnesium, and a pure titanium sponge product is obtained after the distillation is finished. However, during distillation, the phenomenon of blocking the vacuum channel is frequently generated, namely, a mixed condensate of magnesium chloride and magnesium is formed at the lower part of a large cover vertical pipe at the cold end. When the vacuum channel is blocked, the vacuum channel can be dredged only by detaching the plug on the large cover, but the mass of the plug is large, the lifting difficulty of an operator is high, an overhead traveling crane is required to be lifted off, and the overhead traveling crane is required to be lifted during installation, so that the running time of the overhead traveling crane is occupied; when the blockage of the vacuum channel is treated, the production must be stopped to prevent the product from being polluted by the inlet air, and the positive pressure is kept in the reducing furnace when a large amount of argon is introduced; after the treatment is finished, the temperature is raised to the process control temperature for distillation, and the time of the whole treatment project needs to be delayed by about 10 hours. Therefore, the treatment of the blocked pipe not only increases the argon consumption and the power consumption, but also delays the production period and increases the labor intensity of operators. Most manufacturers adopt mechanical dredging and electric heating dredging to solve the problem, but the effect is still not ideal. The prior distillation technology has the defects that the distillation channel is blocked: 1. the evacuation tube is too close to the distillation channel. During distillation, when condensate of magnesium chloride and a small amount of magnesium is distilled to enter a cold-end reactor, part of the condensate is condensed at an evacuation pipe due to the close distance between the evacuation pipe and a distillation channel, and the condensate is more accumulated at the evacuation pipe along with the distillation time and finally blocks the vacuum channel; 2. the amount of condensate entering the cold end reactor at the initial stage of distillation is large (the distillation is warmed up to 900-980 ℃ and the high vacuum is started too early), resulting in premature plugging of the distillation channels.

Disclosure of Invention

The invention aims to solve the technical problem of vacuum channel blockage in the distillation stage in the production of titanium sponge.

In order to solve the technical problems, the invention adopts the following technical scheme:

a device for preventing vacuum channel blockage in titanium sponge production comprises a condenser 12, a sieve plate 13, a reactor 14, a magnesium chloride tube 15, a large cover 16, a large cover vertical tube 17 and a heating furnace 18; the big cover stand pipe 17 is arranged at the center of the big cover 16.

After reduction production is finished, an assembled reactor 14, a sieve plate 13 and a large cover 16 are hung in a condenser 12, cooling water is introduced into the condenser 12, a passageway is connected, a magnesium chloride pipe 15 is connected with a vacuum system, then pressure is discharged, the temperature is increased to 850 ℃, low vacuum is started for distillation, the temperature is controlled to 850 ℃ continuously, and low vacuum distillation production is carried out for 30 hours; and controlling the temperature to be 900-980 ℃ after 30 hours, starting high vacuum to carry out distillation production, and finally finishing distillation.

Adopt above-mentioned technical scheme's beneficial effect:

1. the invention cancels the evacuation pipe, adopts the magnesium chloride pipe to evacuate, reduces the welding seams of the large cover and reduces the gas inlet rate of the product.

2. The invention solves the technical problem of pipe blockage, and shortens the distillation production period by about 10 hours.

3. The invention solves the technical problem of pipe blockage and saves argon consumption.

4. The invention solves the technical problem of pipe blockage and saves the power consumption of distillation production.

5. The invention solves the technical problem of pipe blockage, reduces the labor intensity of operators and improves the working environment.

Description of the drawings:

FIG. 1 is a schematic diagram of the distillation production of titanium sponge according to the prior art;

FIG. 2 is a top view of FIG. 1;

in the figure: 1-condenser, 2-sieve plate, 3-reactor, 4-magnesium chloride tube, 5-big cover, 6-evacuation tube, 7-big cover vertical tube, 8-condensate, 9-sponge titanium, 10-heating furnace, 11-evacuation tube sleeve.

FIG. 3 is a schematic view of a process for preventing vacuum channel blockage in titanium sponge production according to the present invention;

FIG. 4 is a top view of FIG. 3;

in the figure: 12-condenser, 13-sieve plate, 14-reactor, 15-magnesium chloride tube, 16-big cover, 17-big cover vertical tube, 18-heating furnace.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 3, the device for preventing the vacuum channel from being blocked in the production of the titanium sponge comprises a condenser 12, a sieve plate 13, a reactor 14, a magnesium chloride tube 15, a large cover 16, a large cover vertical tube 17 and a heating furnace 18; the method is characterized in that: the big cover stand pipe 17 is arranged at the center of the big cover 16.

A process for preventing a device from being blocked by a vacuum channel in the production of titanium sponge is characterized by comprising the following steps:

after the reduction production is finished, the assembled reactor 14, sieve plate 13 and large cover 16 are hung in a condenser 12, cooling water is introduced into the condenser 12, a passageway is connected, a magnesium chloride pipe 15 is connected with a vacuum system, then pressure is discharged, the temperature is raised to 850 ℃, meanwhile, low vacuum is started for distillation, the temperature is controlled to 850 ℃ continuously, and the low vacuum distillation production is carried out for 30 hours; and controlling the temperature to be 900-980 ℃ after 30 hours, starting high vacuum to carry out distillation production, and finally finishing distillation.

The invention solves the problem of vacuum channel blockage during the distillation production of the titanium sponge; the argon gas consumption and the power consumption are saved, the distillation production period is shortened, and meanwhile, the production cost and the labor intensity of operators are reduced.