CN212713703U - Reduction distillation furnace for producing titanium sponge - Google Patents
Reduction distillation furnace for producing titanium sponge Download PDFInfo
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- CN212713703U CN212713703U CN202021628767.6U CN202021628767U CN212713703U CN 212713703 U CN212713703 U CN 212713703U CN 202021628767 U CN202021628767 U CN 202021628767U CN 212713703 U CN212713703 U CN 212713703U
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Abstract
The utility model discloses a reduction distillation furnace for producing titanium sponge, which comprises a furnace shell, wherein the inner wall and the bottom of the circumference of the furnace shell are provided with heat preservation layers, the inner wall of the heat preservation layers is evenly distributed with a plurality of heating elements from top to bottom, and the heating elements are respectively connected with a power supply through an electrode component penetrating through the furnace shell; it is characterized in that: the reactor comprises a furnace shell, wherein an annular air cavity is arranged at the inner upper part of the furnace shell, an air inlet communicated with the annular air cavity is arranged at one side of the furnace shell, an air outlet communicated with the annular air cavity is arranged at the other side of the furnace shell, a plurality of ventilation pipes are uniformly distributed in the heat preservation layer along the circumferential direction, and the annular air cavity is communicated with the inner cavity of the furnace shell through the ventilation pipes and used for introducing cold air to cool the reactor inserted into the furnace shell. The beneficial effects are that: the reactor has the advantages of realizing ventilation cooling without dead angles in the furnace shell, avoiding overtemperature of the reactor inserted into the furnace shell due to poor local cooling effect, along with compact structure, good heat dissipation effect and high product qualification rate.
Description
Technical Field
The utility model relates to a titanium sponge production field, in particular to a reduction distillation furnace for titanium sponge production.
Background
At present, the titanium sponge produced industrially at home and abroad adopts a method of reducing titanium tetrachloride by magnesium, the reduction reaction is an exothermic reaction, a large amount of waste heat is generated during production, and the waste heat needs to be discharged out of a reactor in time. In the reduction distillation process, the furnace type is mostly used for producing the titanium sponge by adopting an inverted U-shaped combination method, and the method has the advantages of large furnace type, high single-furnace yield and low energy consumption. However, with the increase of the type of the reduction distillation furnace, that is, the diameters and heights of the reactor and the reduction distillation furnace of the titanium sponge production equipment are increased, the heat dissipation of the central part of the reactor is not timely during the reduction period, the temperature of the central part is higher, and the problems of over-temperature sintering of the titanium sponge at the central part, difficulty in distilling the MgCl2 sandwiched between the titanium sponge and the reduction distillation furnace, increase of hard blocks, increase of wall-climbing titanium and compact product structure are caused, so that the qualification rate and the grade rate of the product are seriously influenced, and the product filling rate of the titanium sponge is influenced.
Because of the limitation of process conditions and equipment materials, the reduction heat dissipation capacity is limited, the reduction reaction surface is not large during the reduction of the titanium sponge, the material speed is not large, the material feeding time is long, and the whole production period is seriously influenced. The heating surface area of the original heating furnace during the distillation is limited, which causes the defects of long distillation time, high power consumption and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a reduction distillation furnace for titanium sponge production that compact structure, the radiating effect is good, and the product percent of pass is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a reduction distillation furnace for producing titanium sponge comprises a furnace shell, wherein heat insulation layers are arranged on the circumferential inner wall and the bottom of the furnace shell, a plurality of heating elements are uniformly distributed on the inner wall of the heat insulation layers from top to bottom, and the heating elements are respectively connected with a power supply through electrode assemblies penetrating through the furnace shell; it is characterized in that: the reactor comprises a furnace shell, wherein an annular air cavity is arranged at the inner upper part of the furnace shell, an air inlet communicated with the annular air cavity is arranged at one side of the furnace shell, an air outlet communicated with the annular air cavity is arranged at the other side of the furnace shell, a plurality of ventilation pipes are uniformly distributed in the heat preservation layer along the circumferential direction, and the annular air cavity is communicated with the inner cavity of the furnace shell through the ventilation pipes and used for introducing cold air to cool the reactor inserted into the furnace shell.
Preferably, the number of the air inlets is one, and the number of the air outlets is two and higher than the number of the air inlets.
Preferably, the ventilation pipes are arranged in three layers from top to bottom, and two adjacent layers are arranged in a staggered manner, so that no dead angle exists in the furnace shell for ventilation and cooling.
Preferably, the furnace shell is provided with a plurality of anti-collision assemblies along the circumferential direction, and each anti-collision assembly is arranged along the radial direction of the furnace shell and protrudes out of the heating element on the inner wall of the heat insulation layer, so as to prevent the reactor inserted into the furnace shell from colliding with the heating element.
Preferably, the anti-collision assembly comprises a support sleeve fixed on the inner wall of the furnace shell, a ball plunger is connected in an inner port of the support sleeve through threads, and a porcelain sleeve sleeved outside the ball plunger is arranged at the inner end of the support sleeve.
Preferably, annular dust rings are fixed to the middle and lower portions of the inner wall of the heat insulating layer to prevent the reactor scale inserted into the furnace shell from falling onto the heating elements.
Preferably, a vacuum ceramic tube communicated with the inner cavity of the furnace shell is arranged on one side of the lower part of the furnace shell, and the outer end of the vacuum ceramic tube is connected with a vacuum elbow for connecting a vacuum pump to vacuumize the inner cavity of the furnace shell during distillation.
Preferably, the furnace casing is provided with electrode covers on the sides corresponding to the electrode assemblies, and the electrode covers cover the outer ends of the three adjacent groups of the electrode assemblies for protecting the electrode assemblies from short circuit.
Preferably, a plurality of thermocouples are uniformly inserted into one side of the furnace shell along the vertical direction, and the thermocouples are inserted into the inner cavity of the furnace shell and used for detecting the temperature of the inner cavity of the furnace shell.
Preferably, the furnace shell comprises a circular outer cylinder, a cover plate and a bottom plate are fixedly welded at the upper end and the lower end of the outer cylinder respectively, and longitudinal beams are uniformly distributed between the cover plate and the bottom plate and positioned at the outer edge of the outer cylinder along the circumferential direction and used for enhancing the strength of the outer cylinder.
The utility model has the advantages that:
1. through establishing the annular wind chamber in stove outer covering upper portion, can distribute the cold air equipartition that the air intake got into to stove outer covering inner chamber and discharge through the air exit, realize the ventilation cooling in the messenger stove outer covering and do not have the dead angle, avoided local cooling effect not good to cause the reactor that inserts in the stove outer covering overtemperature, compact structure, the radiating effect is good, and the product percent of pass is high.
2. Through establishing a plurality of anticollision subassemblies at stove outer covering inner wall middle part along the circumferencial direction equipartition, every anticollision subassembly is respectively along the radial heating element who arranges and protrusion heat preservation inner wall of stove outer covering, can effectively prevent to insert the reactor collision heating element in the stove outer covering, extension reactor and heating element's life.
3. Because the middle part of the inner wall of the heat preservation layer is fixed with the annular dust blocking ring, the reactor oxide skin inserted into the furnace shell can be prevented from falling onto the heating element through the dust blocking ring, and the service lives of the reactor and the heating element are further prolonged.
Drawings
Fig. 1 is a top view of the structure of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
Fig. 4 is a cross-sectional view C-C of fig. 1.
Fig. 5 is a cross-sectional view D-D of fig. 2.
Fig. 6 is a partially enlarged view of fig. 4.
In the figure: the furnace comprises a furnace shell 1, an outer cylinder 101, a cover plate 102, a bottom plate 103, a longitudinal beam 104, an insulating layer 2, an annular air cavity 3, a heating element 4, a dust blocking ring 5, a vacuum elbow 6, a vacuum porcelain tube 7, an electrode assembly 8, an electrode cover 9, a ventilation tube 10, an air inlet 11, an air outlet 12, a thermocouple 13, a thermocouple seat 14, an anti-collision assembly 15, a support sleeve 151, a ball plunger 152 and a porcelain sleeve 153.
Detailed Description
As shown in fig. 1-6, the present invention relates to a reduction distillation furnace for titanium sponge production, which comprises a cylindrical hollow furnace shell 1, wherein the furnace shell 1 comprises a circular outer cylinder 101, a cover plate 102 and a bottom plate 103 are respectively fixedly welded at the upper and lower ends of the outer cylinder 101, and longitudinal beams 104 are uniformly distributed at the outer edge of the outer cylinder 101 along the circumferential direction between the cover plate 102 and the bottom plate 103 for enhancing the strength of the outer cylinder 101.
The inner wall and the bottom of the circumference of the furnace shell 1 are respectively fixed with a heat preservation layer 2, the heat preservation layer 2 is made of aluminum silicate rock wool, a plurality of heating elements 4 are uniformly distributed and fixed on the inner wall of the heat preservation layer 2 from top to bottom, and the heating elements 4 are wave-shaped resistance belts and are fixed on the inner wall of the heat preservation layer 2 through ceramic nails. Each heating element 4 is respectively connected with a power supply through an electrode assembly 8 which radially penetrates through the furnace shell 1 and the heat insulation layer 2, a plurality of electrode covers 9 are fixed on the outer wall of the furnace shell 1 corresponding to one side of the electrode assembly 8, and each electrode cover 9 covers the outer ends of three adjacent groups of electrode assemblies 8 therein for protecting the electrode assemblies 8 from short circuit.
The upper portion is equipped with annular wind chamber 3 in stove outer covering 1, is equipped with the welt between 3 inboards in annular wind chamber and heat preservation 2, is equipped with air intake 11 with annular wind chamber 3 intercommunication on one side of the outer wall of stove outer covering 1, is equipped with the air exit 12 with annular wind chamber 3 intercommunication on the other side of the outer wall of stove outer covering 1, air intake 11 is one, and air exit 12 is two elbow form interfaces of arranging from top to bottom and is higher than air intake 11. A plurality of ventilation pipes 10 are uniformly distributed in the heat preservation layer 2 along the circumferential direction, and the annular air cavity 3 is communicated with the inner cavity of the furnace shell 1 through the ventilation pipes 10 and is used for introducing cold air to cool the reactor inserted into the furnace shell 1.
The ventilation pipes 10 are arranged in three layers from top to bottom, and two adjacent layers are arranged in a staggered manner and used for realizing ventilation and cooling in the furnace shell 1 without dead angles.
A plurality of anti-collision assemblies 15 are uniformly distributed and fixed in the middle of the inner wall of the furnace shell 1 along the circumferential direction, and each anti-collision assembly 15 is radially arranged along the outer cylinder 101 of the furnace shell 1 and protrudes out of the heating element 4 on the inner wall of the heat preservation layer 2, so as to prevent the reactor inserted into the furnace shell 1 from colliding with the heating element 4.
The anti-collision assembly 15 comprises a support sleeve 151 fixedly welded on the inner wall of the furnace shell 1, a ball plunger 152 is connected in an inner port of the support sleeve through threads, a porcelain sleeve 153 sleeved outside the ball plunger is fixed at the inner end of the support sleeve, and the inner end of the ball plunger 152 sequentially protrudes out of the porcelain sleeve 153 and the heating element 4.
An annular dust blocking ring 5 is fixed at the middle part and the lower part of the inner wall of the heat preservation layer 2 through ceramic nails, and the inner hole of the dust blocking ring 5 is in a step shape and used for preventing the oxide skin of the reactor inserted into the furnace shell 1 from falling onto the heating element 4.
A vacuum porcelain tube 7 communicated with the inner cavity of the furnace shell 1 is inserted into the heat-insulating layer 2 on one side of the lower part of the furnace shell 1, the outer end of the vacuum porcelain tube 7 is connected with a vacuum elbow 6, and the vacuum elbow 6 is led out from the furnace shell 1 and is used for connecting a vacuum pump to vacuumize the interior of the furnace shell 1 during distillation.
A plurality of thermocouple seats 14 are uniformly distributed and fixed on one side of the outer edge of the furnace shell 1 along the vertical direction, a thermocouple 13 is fixedly inserted on each thermocouple seat 14 through a bolt, and the front end of the thermocouple 13 is inserted into the inner cavity of the furnace shell 1 and used for detecting the temperature of the inner cavity of the furnace shell 1. In the embodiment, four thermocouples 13 are taken as an example, and the thermocouple 13 positioned at the uppermost position penetrates through the annular air cavity 3.
During production, the reactor is inserted into the furnace shell 1, and the collision-prevention assembly 15 can effectively prevent the reactor inserted into the furnace shell 1 from colliding with the heating element 4. During reduction, the reduction reaction of magnesium and titanium tetrachloride is carried out in the reactor, the reaction heat is transferred to the wall of the reactor through the melt, at the moment, cold air is pumped into the annular air cavity through the fan connected with the air inlet 11 and enters the inner cavity of the furnace shell 1 through the vent pipe 10, and therefore the reactor inserted into the furnace shell 1 is cooled. The cold air and the reactor wall are heated by heat exchange, and the high-temperature air is exhausted out of the furnace shell 1 through the annular air cavity and the two exhaust outlets 12, so that the purpose of dissipating the reaction heat is realized. When entering the distillation stage, start the vacuum pump, carry out the evacuation in to the stove outer covering 1, make the inside evacuation state that becomes of heat preservation 2, do not have the air convection, the stove outer covering 1 is inside to heat to 1000 ℃ through heating element 4, and the stove outer covering 1 is inside regional to carry out thermal-insulated heat preservation through heat preservation 2. Can effectually block on heat direct radiation reaches the stove outer covering through heat preservation 2 and annular wind chamber to prevent that the inside heat direct radiation of furnace from causing the stove outer covering local heating deformation to the stove outer covering.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A reduction distillation furnace for producing titanium sponge comprises a furnace shell, wherein heat insulation layers are arranged on the circumferential inner wall and the bottom of the furnace shell, a plurality of heating elements are uniformly distributed on the inner wall of the heat insulation layers from top to bottom, and the heating elements are respectively connected with a power supply through electrode assemblies penetrating through the furnace shell; the method is characterized in that: the reactor comprises a furnace shell, wherein an annular air cavity is arranged at the inner upper part of the furnace shell, an air inlet communicated with the annular air cavity is arranged at one side of the furnace shell, an air outlet communicated with the annular air cavity is arranged at the other side of the furnace shell, a plurality of ventilation pipes are uniformly distributed in the heat preservation layer along the circumferential direction, and the annular air cavity is communicated with the inner cavity of the furnace shell through the ventilation pipes and used for introducing cold air to cool the reactor inserted into the furnace shell.
2. A reduction distillation furnace for titanium sponge production according to claim 1, characterized in that: the air inlet is one, and the air outlet is two that arrange from top to bottom and is higher than the air inlet.
3. A reduction distillation furnace for titanium sponge production according to claim 1 or 2, characterized in that: the ventilation pipes are arranged in three layers from top to bottom, and two adjacent layers are arranged in a staggered mode and used for achieving ventilation and cooling in the furnace shell without dead angles.
4. A reduction distillation furnace for titanium sponge production according to claim 1, characterized in that: the middle part of the inner wall of the furnace shell is uniformly distributed with a plurality of anti-collision components along the circumferential direction, and each anti-collision component is respectively arranged along the radial direction of the furnace shell and protrudes out of the heating element of the inner wall of the heat preservation layer, so as to prevent the reactor inserted into the furnace shell from colliding with the heating element.
5. A reduction distillation furnace for titanium sponge production according to claim 4, characterized in that: the anti-collision assembly comprises a support sleeve fixed on the inner wall of the furnace shell, a ball plunger is connected in an inner port of the support sleeve through threads, and a porcelain sleeve sleeved outside the ball plunger is arranged at the inner end of the support sleeve.
6. A reduction distillation furnace for the production of titanium sponge according to claim 1 or 4, characterized in that: annular dust-blocking rings are fixed at the middle part and the lower part of the inner wall of the heat-insulating layer and are used for preventing the oxide skin of the reactor inserted into the furnace shell from falling onto the heating element.
7. A reduction distillation furnace for titanium sponge production according to claim 6, characterized in that: one side of the lower part of the furnace shell is provided with a vacuum ceramic tube communicated with the inner cavity of the furnace shell, and the outer end of the vacuum ceramic tube is connected with a vacuum elbow for connecting a vacuum pump to vacuumize the inner part of the furnace shell when distillation is realized.
8. A reduction distillation furnace for titanium sponge production according to claim 1, characterized in that: and an electrode cover is arranged on the furnace shell at one side corresponding to the electrode assemblies, and covers the outer ends of the three adjacent groups of electrode assemblies in the electrode cover for protecting the electrode assemblies from short circuit.
9. The reduction distillation furnace for producing titanium sponge according to claim 1 or 8, which is characterized in that: and a plurality of thermocouples are uniformly distributed and inserted at one side of the furnace shell along the vertical direction, and the thermocouples are inserted into the inner cavity of the furnace shell and used for detecting the temperature of the inner cavity of the furnace shell.
10. A reduction distillation furnace for titanium sponge production as claimed in claim 9 wherein: the furnace shell comprises a circular outer cylinder, a cover plate and a bottom plate are fixedly welded at the upper end and the lower end of the outer cylinder respectively, and longitudinal beams are uniformly distributed between the cover plate and the bottom plate and positioned at the outer edge of the outer cylinder along the circumferential direction and used for enhancing the strength of the outer cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021628767.6U CN212713703U (en) | 2020-08-07 | 2020-08-07 | Reduction distillation furnace for producing titanium sponge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021628767.6U CN212713703U (en) | 2020-08-07 | 2020-08-07 | Reduction distillation furnace for producing titanium sponge |
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| CN212713703U true CN212713703U (en) | 2021-03-16 |
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| CN202021628767.6U Active CN212713703U (en) | 2020-08-07 | 2020-08-07 | Reduction distillation furnace for producing titanium sponge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350980A (en) * | 2022-01-17 | 2022-04-15 | 遵义钛业股份有限公司 | Heating and radiating furnace for reduction production of titanium sponge |
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- 2020-08-07 CN CN202021628767.6U patent/CN212713703U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350980A (en) * | 2022-01-17 | 2022-04-15 | 遵义钛业股份有限公司 | Heating and radiating furnace for reduction production of titanium sponge |
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