阅读说明：本技术 海绵钛蒸馏生产中连接冷、热端大盖的独立过道 (Independent passageway for connecting cold end and hot end large covers in titanium sponge distillation production ) 是由 张履国 舒煜 李斗良 黄晓平 丰雷 刘建国 邓余红 李金泽 于 2020-07-29 设计创作，主要内容包括：海绵钛蒸馏生产中连接冷、热端大盖的独立过道,包括过道管、加热元件、外壳、保温材料、加热器密封环及外壳法兰；在过道管的外部设置有加热元件和外壳,过道管与外壳通过热器密封环连接组成一个密封体,其间设置有保温材料；在过道管和外壳上分别设置有两个以上弧形管,在外壳上两端位置分别设有两个对称的氩气管。海绵钛还原结束后,在大盖设置的法兰上安装独立过道,在氩气管的一端充入氩气,另外一端的氩气管作为排气管,排除密封体内的空气后进行升温加热。因氩气置换出了空气,加热元件不受氧化。高温加热后,在弧形管的作用下避免了过道管和外壳的热拉伸变形,降低产品进气率,提高海绵钛质量和降低生产成本。(The independent passageway for connecting the cold end large cover and the hot end large cover in the distillation production of the titanium sponge comprises a passageway pipe, a heating element, a shell, a heat insulation material, a heater sealing ring and a shell flange; the outside of the channel pipe is provided with a heating element and a shell, the channel pipe and the shell are connected through a heat exchanger sealing ring to form a sealing body, and a heat insulation material is arranged between the channel pipe and the shell; more than two arc-shaped pipes are respectively arranged on the channel passing pipe and the shell, and two symmetrical argon pipes are respectively arranged at the two ends of the shell. After the reduction of the titanium sponge is finished, an independent passageway is arranged on a flange arranged on the large cover, argon is filled into one end of the argon pipe, the argon pipe at the other end of the argon pipe is used as an exhaust pipe, and the temperature is raised and heated after air in the sealing body is exhausted. The heating element is not subject to oxidation because the argon displaces air. After high-temperature heating, the thermal stretching deformation of the channel passing pipe and the shell is avoided under the action of the arc-shaped pipe, the air inlet rate of a product is reduced, the quality of the titanium sponge is improved, and the production cost is reduced.)

1. An independent passageway for connecting a cold end large cover and a hot end large cover in the distillation production of titanium sponge comprises a passageway pipe (1), a heating element (2), a shell (3), a heat insulation material (4), a heater sealing ring (7) and a shell flange (8); a heating element (2) and a shell (3) are arranged outside the channel passing pipe (1), the channel passing pipe (1) and the shell (3) are connected through a heater sealing ring (7) to form a sealing body, and a heat insulation material (4) is arranged between the channel passing pipe and the shell; two ports of the shell (3) are respectively provided with a shell flange (8) connected with a large cover flange; the method is characterized in that:

the channel passing pipe (1) is cast integrally;

more than two arc-shaped pipes (5) are arranged on the channel passing pipe (1);

more than two arc-shaped pipes (5) are arranged on the shell (3);

two symmetrical argon pipes (6) are respectively arranged at the two ends of the shell (3).

Technical Field

The invention relates to a production device of titanium sponge, in particular to an independent passageway for connecting a large cover at a cold end and a hot end in the distillation production of titanium sponge by a combination method.

Background

At present, the titanium sponge produced by industry at home and abroad adopts a method for reducing titanium tetrachloride by magnesium, and in the reduction distillation process, most of the furnace types adopt an inverted U-shaped combined method for production, and the method is characterized by the advantages of large single-furnace yield, high top-grade product rate and low energy consumption. In order to reduce the production cost, the large-scale equipment is taken as a technical development direction in all countries. The production of titanium sponge by inverse U-shaped combination method is characterized by that the hot end of titanium sponge production is parallelly-connected with cold end reactor, and the cold end and hot end are butt-jointed by means of welded passageways, and the butt-joint mouth is sealed by means of welding, and the passageway is formed from transverse tube and vertical tube, and the periphery of the passageway is equipped with independent heater, and heated to above 850 deg.C. And then, vacuumizing the cold end, distilling magnesium and magnesium chloride in the hot end reactor to the cold end reactor for condensation and collection, and cutting the butt joint of the two channels by gas welding after distillation is finished to finish the distillation process. The sealing effect needs to be achieved at high temperature and high pressure at the welding position of the transverse pipe and the vertical pipe and the welding position of the aisle butt joint, the welding mode not only delays the production cycle for 5 hours, but also consumes the welding cost and increases the labor amount of a welding worker; due to the physical characteristics of expansion with heat and contraction with cold of the steel parts, the cross pipe of the passageway can extend at high temperature, the positions of reactors at two ends are fixed, the reactors cannot generate displacement, the passageway pipe seriously generates bending deformation under the action of thermal stress, the tensile crack is generated on a welding seam, the furnace is stopped for leakage detection and welding again, the production period is prolonged, and the product is aerated, so that the product quality is reduced. When the deformed passage is produced and assembled next time, the two passage transverse pipes are difficult to be ensured to be on the same straight line, the welding difficulty is increased, and the service life of the large cover is shortened due to the deformation failure of the passage pipes.

Disclosure of Invention

The invention aims to solve the problems existing in the prior art that: the connection between the cold end passage and the hot end passage during the distillation process in the production process of the titanium sponge, the deformation of the passage caused by heating and the integration between the cold end passage and the hot end passage are not realized.

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

the independent passageway for connecting the cold end large cover and the hot end large cover in the distillation production of the titanium sponge comprises a passageway pipe 1, a heating element 2, a shell 3, a heat insulation material 4, a heater sealing ring 7 and a shell flange 8;

a heating element 2 and a shell 3 are arranged outside the aisle pipe 1, the aisle pipe 1 and the shell 3 are connected through a heater sealing ring 7 to form a sealing body, and a heat insulation material 4 is arranged between the aisle pipe and the shell; two ports of the shell 3 are respectively provided with a shell flange 8 which is connected with a large cover flange; the method is characterized in that:

the channel passing pipe 1 is cast integrally;

more than two arc-shaped pipes 5 are arranged on the channel passing pipe 1;

more than two arc-shaped pipes 5 are arranged on the shell 3;

two symmetrical argon pipes 6 are respectively arranged at the two ends of the shell 3.

Adopt above-mentioned technical scheme's beneficial effect:

1. the invention realizes the integration of the cold end passage and the hot end passage, solves the problems of welding and cutting of the passages during distillation production, shortens the production period by 5 hours and improves the utilization coefficient of the reduction distillation furnace.

2. The invention adopts the arc-shaped pipe to solve the problem of expansion with heat and contraction with cold of the passageway pipe, and avoids the air inlet and the quality reduction of the product caused by the heat deformation of the passageway.

3. The arc-shaped tube is arranged on the shell, so that the problem of expansion with heat and contraction with cold of the shell is solved, the problem of oxidation of the heating element caused by thermal deformation of the shell is solved, the service life of the heating element is prolonged, and the production cost of the titanium sponge is reduced.

4. The invention adopts the arc-shaped pipe to solve the problem of expansion with heat and contraction with cold of the aisle pipe, reduces the scrapping of a large cover caused by the deformation of the aisle pipe caused by expansion with heat and contraction with cold, and reduces the production cost of the titanium sponge.

5. When the passageway is heated, the air in the sealing body is discharged by adopting argon, so that the heating element is protected from high-temperature oxidation, the service life of the heating element is prolonged, and the production cost of the titanium sponge is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the present invention in connection with a cold and hot end large lid.

In the figure: 1-channel passing pipe, 2-heating element, 3-shell, 4-heat preservation material, 5-arc pipe, 6-argon pipe, 7-heater sealing ring and 8-shell flange.

Detailed Description

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

As shown in fig. 1, the independent passageway for connecting the large covers at the cold end and the hot end in the distillation production of the titanium sponge comprises a passageway pipe 1, a heating element 2, a shell 3, a heat insulation material 4, a heater sealing ring 7 and a shell flange 8;

a heating element 2 and a shell 3 are arranged outside the aisle pipe 1, the aisle pipe 1 and the shell 3 are connected through a heater sealing ring 7 to form a sealing body, and a heat insulation material 4 is arranged between the aisle pipe and the shell; two ports of the shell 3 are respectively provided with a shell flange 8 which is connected with a large cover flange;

the channel pipe 1 is formed by casting integrally, so that integration of a cold end channel and a hot end channel is realized, and the problem of time consumption in butt joint and cutting of the channels in distillation production is solved;

the pipeline passing pipe 1 is provided with more than two arc pipes 5, and the function is as follows: when the pipe is at high temperature or cooled, the arc-shaped pipe 5 is firstly compressed or stretched under the action of expansion with heat and contraction with cold, so that the problems of deformation and tension fracture of the passage pipe 1 are avoided, and air inlet and quality reduction of products caused by passage deformation are avoided; the large cover scrap caused by the expansion with heat and the contraction with cold of the passageway pipe 1 is reduced, and the production cost is saved;

more than two arc-shaped pipes 5 are arranged on the shell 3; the function is as follows: when the heating element is at a high temperature or cooled, the arc-shaped pipe 5 is firstly compressed or stretched under the action of expansion with heat and contraction with cold, so that the problems of deformation and tension fracture of the shell 3 are avoided, and air is prevented from entering the oxidation heating element.

Two symmetrical argon pipes 6 are respectively arranged at two ends of the shell 3, and the argon pipes have the following functions: when the passageway is heated, argon is introduced into one argon pipe 6, and the argon is used for discharging air in the space of the heating element 2 from the other argon pipe 6, so that the heating space is in an argon protection state, and the high-temperature oxidation of the heating element 2 is reduced.

After the reduction of the titanium sponge is finished, the assembled reactor and the large cover are hung in the condenser, the independent passageway and the heating device (shown in figure 2) thereof are arranged on the flange arranged on the large cover, after the installation is finished, an argon pipeline is connected to one end of the argon pipe 6 to be used as an air inlet pipe for filling argon, the argon pipe 6 at the other end is used as an air outlet pipe, air in the passageway and the heating device thereof is discharged, pipe openings of the argon pipes 6 at the two ends are plugged, and then the temperature is raised and heated. The heating element 2 is not subject to oxidation because the argon displaces air. It is also possible to protect the heating element 2 from oxidation by evacuating the aisle and its heating means. After high-temperature heating, under the action of the arc-shaped pipe 5, the hot stretching deformation of the passageway pipe 1 and the shell 3 is avoided, the air inlet rate of a product is reduced, the quality of the titanium sponge is improved, and the production cost is reduced.