CN212293708U

CN212293708U - Independent passageway for connecting cold end and hot end large covers in titanium sponge distillation production

Info

Publication number: CN212293708U
Application number: CN202021527314.4U
Authority: CN
Inventors: 张履国; 舒煜; 李斗良; 黄晓平; 丰雷; 刘建国; 邓余红; 李金泽
Original assignee: Zunyi Titanium Industry Co Ltd
Current assignee: Zunyi Titanium Industry Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-01-05
Anticipated expiration: 2030-07-29

Abstract

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.

Description

Independent passageway for connecting cold end and hot end large covers in titanium sponge distillation production

Technical Field

The utility model relates to a titanium sponge production device, in particular to an independent passageway for connecting cold and hot end large covers in the combined titanium sponge distillation production.

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.

The utility model has the following contents:

the utility model discloses a for solving exist among the prior art: 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 problem, the utility model discloses a 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 utility model discloses a cold junction passageway and hot junction passageway integration, the welding and the cutting problem in passageway when having solved distillation production shorten production cycle 5 hours, improve the utilization coefficient of reduction distillation stove.

2. The utility model discloses an arc pipe solves passageway pipe expend with heat and contract with cold problem, stops to lead to the product to admit air, the quality to descend because of passageway thermal deformation.

3. The utility model discloses set up the arc tube on the shell and solve shell expend with heat and contract with cold problem, stop to lead to heating element oxidation problem because of shell thermal deformation, make heating element life extension, reduce titanium sponge manufacturing cost.

4. The utility model discloses an arc pipe solves passageway pipe expend with heat and contract with cold problem, reduces to lead to big lid to scrap because of passageway pipe expend with heat and contract with cold warp, reduces titanium sponge manufacturing cost.

5. The utility model discloses when the passageway heating, adopt the air in the argon gas discharge sealing body, the protection heating element does not receive high temperature oxidation, extension heating element's life reduces titanium sponge manufacturing cost.

Drawings

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

Fig. 2 is a schematic view of the connection between the cold and hot end caps of the present invention.

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 titanium sponge reduction, hang into the reactor and big lid that the equipment is good in the condenser, install on the flange that big lid set up the utility model discloses an independent passageway and heating device (like fig. 2), the installation is accomplished the back, connects the argon gas pipeline as the intake pipe at the one end of argon gas pipe 6 and fills the argon, and the argon gas pipe 6 of one end is as the blast pipe in addition, gets rid of the air in passageway and heating device, blocks up the mouth of pipe of both ends argon gas pipe 6, then heats up. 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.

Claims

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).