Waste heat recovery device in titanium sponge production process

Abstract

The invention belongs to the technical field of titanium sponge production, particularly relates to a titanium sponge production process waste heat recovery device, and provides the following scheme aiming at the problem that the interior of existing heat exchange equipment is inconvenient to maintain: the titanium sponge production process waste heat recovery device comprises an air inlet cover, and a vertically arranged high-temperature heat exchange case is fixed on one side of the air inlet cover; the device comprises a high-temperature heat exchange machine box, an overhaul and maintenance machine box is fixed to one side of the high-temperature heat exchange machine box, a vertically-arranged raw material machine box is fixed to one side of the overhaul and maintenance machine box, a raw material discharging barrel is fixed to the bottom of the raw material machine box, and a feeding mechanism is arranged at the bottom of one side of the raw material machine box. According to the electric push rod, the first cleaning machine box extends into the high-temperature heat exchange machine box or the low-temperature heat exchange machine box, through rotation of a first driving lead screw and a second driving lead screw, the position of a lifting motor box is adjusted, then cleaning brush rods extend to holes of heat absorption fins correspondingly, and dust in the holes is cleaned; and the hot air inlet cavity in the whole device is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium sponge production, and in particular to a waste heat recovery device in a titanium sponge production process. Background Art

[0002] In the field of full-process production of sponge titanium, sponge titanium production is an exothermic reaction. In addition to maintaining the reaction, the heat also needs to be forced to cool down by fans. The titanium tetrachloride refining and vanadium removal process is an endothermic process. The excess heat in sponge titanium production can be used in the refining and vanadium removal process through heat exchange devices, reflecting the energy-saving and complementary advantages of full-process production.

[0003] The main reaction equation in sponge titanium production is TiCl4+2Mg=Ti+2MgCl2. This reaction is a highly exothermic reaction. In addition to maintaining the melt shape in the furnace, the excess heat is blown out of the furnace through the fan and directly dissipated in the workshop, causing a large amount of heat energy loss. Moreover, the heat loss in the workshop will cause the workshop temperature to rise, especially in the summer, which will deteriorate the working environment of the workshop and cause great high-temperature damage to the workshop workers. In the process of refining and removing vanadium from titanium tetrachloride, the raw material titanium tetrachloride needs to be preheated to improve the vanadium removal efficiency. Currently, electric heating or natural gas heating is mostly used, and the energy consumption cost is high. Therefore, there is an urgent need for a waste heat recovery device in the sponge titanium production process to solve the above problems. Summary of the Invention

[0004] Based on the technical problem of inconvenient maintenance inside the current heat exchange equipment, the present invention proposes a waste heat recovery device for the sponge titanium production process.

[0005] The present invention proposes a waste heat recovery device for a sponge titanium production process, comprising an air intake hood, a vertically arranged high-temperature heat exchange chassis fixed to one side of the air intake hood, a repair and maintenance chassis fixed to one side of the high-temperature heat exchange chassis, a vertically arranged raw material chassis fixed to one side of the repair and maintenance chassis, a raw material discharge barrel fixed to the bottom of the raw material chassis, a feeding mechanism provided at the bottom of one side of the raw material chassis, and heat exchange components installed inside both the high-temperature heat exchange chassis and the low-temperature heat exchange chassis.

[0006] Preferably, the heat exchange assembly includes a high-temperature heat exchange chassis and heat exchange blocks nested at the top and bottom of the low-temperature heat exchange chassis. Heat exhaust fins are fixed on the top of the heat exchange block, and heat absorption fins are fixed on the bottom of the heat exchange block.

[0007] Preferably, a heat transfer oil circulation chamber is provided inside the high-temperature heat exchange chassis and the low-temperature heat exchange chassis, and a hot air inlet chamber is also provided inside the high-temperature heat exchange chassis and the low-temperature heat exchange chassis. The heat absorption fins are located in the hot air inlet chamber between the high-temperature heat exchange chassis and the low-temperature heat exchange chassis, and the heat absorption fins are arranged parallel to the air inlet direction of the hot air inlet chamber. The heat exhaust fins are located in the heat transfer oil circulation chambers of the high-temperature heat exchange chassis and the low-temperature heat exchange chassis, and the heat exhaust fins are parallel to the liquid flow direction of the heat transfer oil circulation chambers in the high-temperature heat exchange chassis and the low-temperature heat exchange chassis. The bottoms of the high-temperature heat exchange chassis, the low-temperature heat exchange chassis and the raw material chassis are all equipped with heat transfer oil circulation bottom pipes, and the tops of the high-temperature heat exchange chassis, the low-temperature heat exchange chassis and the raw material chassis are all equipped with heat transfer oil circulation top pipes.

[0008] Preferably, a motor frame is fixed in the middle position of the maintenance chassis, a horizontally arranged first drive motor is fixed in the middle position of the motor frame by bolts, and circulating blades are fixed to the output shafts at both ends of the first drive motor.

[0009] Preferably, a tail exhaust port is provided at the bottom of the low-temperature heat exchange chassis.

[0010] Preferably, cleaning mechanisms are provided on both sides of the maintenance chassis, and the cleaning mechanisms include an inner groove of the maintenance chassis opened on the inner wall of the maintenance chassis, and a horizontally arranged electric push rod is fixed to the inner wall of the inner groove of the maintenance chassis, and one end of the electric push rod is fixed with a side fixing plate by bolts.

[0011] Preferably, the side fixing plate is fixed with a horizontally arranged first cleaning chassis by bolts, the side wall of the first cleaning chassis is provided with a first side groove, the second cleaning chassis is slidably installed inside the first side groove, the first driving screw is installed inside the first side groove through a bearing, and the first driving screw and the second cleaning chassis are threadedly installed.

[0012] Preferably, the side wall of the second cleaning chassis is provided with a second side groove, a lifting motor box is slidably installed inside the second side groove, a second driving screw is installed in the second side groove of the side wall of the second cleaning chassis through a bearing, the second driving screw is threadedly installed with the lifting motor box, a second driving motor is nested inside the lifting motor box, and a cleaning brush rod is fixed to the output shaft of the second driving motor.

[0013] Preferably, the feeding mechanism includes a raw material feeding barrel fixed at the bottom of the raw material chassis, a third driving motor is fixed to the end of the raw material feeding barrel, an auger conveying shaft is installed inside the raw material feeding barrel through a bearing, the auger conveying shaft is fixed to the output shaft of the third driving motor, and a raw material hopper is also fixed to the top of the raw material feeding barrel.

[0014] Preferably, an annular raw material circulation groove is provided on one side of the raw material chassis, a circulating feeding belt is provided inside the raw material circulation groove, an array of partitions are fixed on the outer wall of the circulating feeding belt, an inner toothed belt is fixed on the inner wall of the circulating feeding belt, a fourth drive motor is fixed inside the raw material chassis, a drive gear is installed on the output shaft of the fourth drive motor, and the drive gear is meshed with the inner toothed belt, and a raw material heat conduction chamber is provided on the other side of the raw material chassis.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the waste heat recovery device for the sponge titanium production process, the electric push rod extends the first cleaning chassis to the inside of the high-temperature heat exchange chassis or the low-temperature heat exchange chassis. The rotation of the first drive screw and the second drive screw adjusts the position of the lifting motor chassis, and then extends the cleaning brush rod to the gaps between the heat-absorbing fins to clean the dust therein and maintain the hot air intake cavity inside the entire device.

[0017] 2. In the waste heat recovery device for the titanium sponge production process, the titanium tetrachloride raw material is fed through the raw material feeding hopper and input into the bottom of the raw material circulation tank through the raw material feeding tube. The rotation of the fourth drive motor rotates the circulating feeding belt, and the titanium tetrachloride raw material circulates along the raw material circulation tank. The titanium tetrachloride is preheated by the high temperature of the heat transfer oil in the raw material heat transfer chamber. The preheated titanium tetrachloride raw material is circulated to the raw material discharge tube at the bottom for discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a waste heat recovery device for a titanium sponge production process proposed by the present invention;

[0019] Figure 2 This is a schematic diagram of the partial structure of a heat exchange block in a waste heat recovery device for a titanium sponge production process proposed by the present invention;

[0020] Figure 3 This is a schematic diagram of the cleaning mechanism structure of a waste heat recovery device for a titanium sponge production process proposed by the present invention;

[0021] Figure 4 A waste heat recovery device for titanium sponge production process proposed by the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0022] Figure 5 This is a structural schematic diagram of one side of the raw material chassis of a waste heat recovery device for a titanium sponge production process proposed by the present invention;

[0023] Figure 6 This is a schematic structural diagram of the other side of the raw material chassis of a waste heat recovery device for a titanium sponge production process proposed by the present invention.

[0024] Figure: 1. Air intake hood; 2. High-temperature heat exchange chassis; 3. Maintenance chassis; 4. Low-temperature heat exchange chassis; 5. Raw material chassis; 6. Raw material feed barrel; 7. Raw material discharge barrel; 8. Raw material hopper; 9. Third drive motor; 10. Thermal oil circulation bottom pipe; 11. Thermal oil circulation top pipe; 12. Heat exchange assembly; 13. Heat exchange block; 14. Heat absorption fins; 15. Heat exhaust fins; 16. Thermal oil circulation chamber; 17. Hot air Air intake chamber; 18. Motor frame; 19. First drive motor; 20. Circulation blades; 21. First cleaning chassis; 22. Second cleaning chassis; 23. Inner tank of maintenance chassis; 24. Electric push rod; 25. Side fixing plate; 26. Lifting motor chassis; 27. Second drive motor; 28. Cleaning brush rod; 29. Raw material circulation tank; 30. Circulation feeding belt; 31. Partition; 32. Inner tooth belt; 33. Raw material heat conduction chamber. DETAILED DESCRIPTION

[0025] Reference Figure 1 A waste heat recovery device for a titanium sponge production process comprises an air intake hood 1, a high-temperature heat exchange chassis 2 is fixed vertically on one side of the air intake hood 1, a maintenance chassis 3 is fixed on one side of the high-temperature heat exchange chassis 2, a raw material chassis 5 is fixed vertically on one side of the maintenance chassis 3, a raw material discharge barrel 7 is fixed on the bottom of the raw material chassis 5, a feeding mechanism is provided on the bottom of one side of the raw material chassis 5, and heat exchange components 12 are installed inside both the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4.

[0026] Reference Figure 1 and Figure 2 Furthermore, the heat exchange assembly 12 includes heat exchange blocks 13 nested at the top and bottom positions of the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4. Heat exhaust fins 15 are fixed to the top of the heat exchange block 13, and heat absorption fins 14 are fixed to the bottom of the heat exchange block 13; the heat absorption fins 14 absorb heat and conduct it to the heat exhaust fins 15 through the heat exchange block 13.

[0027] Reference Figure 1 and Figure 2Furthermore, a heat transfer oil circulation chamber 16 is provided inside the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4, and a hot air inlet chamber 17 is also provided inside the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4. The heat absorption fins 14 are located in the hot air inlet chamber 17 between the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4, and the heat absorption fins 14 are arranged parallel to the air inlet direction of the hot air inlet chamber 17. The heat exhaust fins 15 are located in the heat transfer oil circulation chamber 16 of the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4, and the heat exhaust fins 15 is parallel to the liquid flow direction of the heat transfer oil circulation chamber 16 in the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4. The bottoms of the high-temperature heat exchange chassis 2, the low-temperature heat exchange chassis 4 and the raw material chassis 5 are all equipped with a heat transfer oil circulation bottom pipe 10, and the tops of the high-temperature heat exchange chassis 2, the low-temperature heat exchange chassis 4 and the raw material chassis 5 are all equipped with a heat transfer oil circulation top pipe 11; during the circulation process, the heat transfer oil carries the heat on the heat exhaust fins 15 and transfers it to the raw material heat transfer chamber 33, providing heat for preheating the titanium tetrachloride raw material.

[0028] Reference Figure 1 and Figure 3 Furthermore, a motor frame 18 is fixed in the middle position of the maintenance chassis 3, and a horizontally arranged first drive motor 19 is fixed to the middle position of the motor frame 18 by bolts. Circulation blades 20 are fixed to the output shafts at both ends of the first drive motor 19, and a tail exhaust port is provided at the bottom of the low-temperature heat exchange chassis 4; the rotation of the circulation blades 20 on the first drive motor 19 assists the circulation of wind force inside the device, improves the efficiency of the internal heat circulation, and can effectively take away dust and the like inside the device when the device is maintained. The tail exhaust port at the bottom of the low-temperature heat exchange chassis 4 discharges the hot exhaust gas out of the entire device.

[0029] Reference Figure 1 、 Figure 3 and Figure 4Furthermore, cleaning mechanisms are provided on both sides of the maintenance chassis 3, and the cleaning mechanisms include an maintenance chassis inner groove 23 provided on the inner wall of the maintenance chassis 3, a horizontally arranged electric push rod 24 is fixed to the inner wall of the maintenance chassis inner groove 23, and a side fixing plate 25 is fixed to the side fixing plate 25 by bolts. The side fixing plate 25 is fixed to a horizontally arranged first cleaning chassis 21 by bolts, and the side wall of the first cleaning chassis 21 is provided with a first side groove, and a second cleaning chassis 22 is slidably installed inside the first side groove, and a first driving screw is installed inside the first side groove through a bearing, and a threaded sleeve is installed between the first driving screw and the second cleaning chassis 22, and a second side groove is provided on the side wall of the second cleaning chassis 22, and a second side groove is slidably installed inside the second side groove. The lifting motor box 26 and the second cleaning box 22 are equipped with a second driving screw through a bearing in the second side groove of the side wall. The second driving screw and the lifting motor box 26 are threadedly installed. The second driving motor 27 is nested inside the lifting motor box 26, and the output shaft of the second driving motor 27 is fixed with a cleaning brush rod 28; the motor is driven by the rotation of the first driving screw to move the second cleaning box 22 laterally, and the rotation of the second driving screw moves the height of the lifting motor box 26, so that the cleaning brush rod 28 can be extended into each groove of the heat-absorbing fin 14 to clean the internal dust and maintain the interior of the device. Different numbers of high-temperature heat exchange boxes 2 and low-temperature heat exchange boxes 4 can replace cleaning brush rods 28 of different lengths.

[0030] Reference Figure 1 and Figure 5 Furthermore, the feeding mechanism includes a raw material feeding barrel 6 fixed at the bottom of the raw material chassis 5, a third driving motor 9 is fixed to the end of the raw material feeding barrel 6, an auger conveying shaft is installed inside the raw material feeding barrel 6 through a bearing, the auger conveying shaft is fixed to the output shaft of the third driving motor 9, and a raw material hopper 8 is also fixed on the top of the raw material feeding barrel 6; the third driving motor 9 drives the internal auger conveying shaft to fill the raw material inside the raw material feeding barrel 6 into the raw material circulation groove 29.

[0031] Reference Figure 1 、 Figure 5 and Figure 6Furthermore, an annular raw material circulation groove 29 is provided on one side of the raw material chassis 5, and a circulating feeding belt 30 is provided inside the raw material circulation groove 29. The outer wall of the circulating feeding belt 30 is fixed with an array of partitions 31, and the inner wall of the circulating feeding belt 30 is fixed with an inner toothed belt 32. A fourth driving motor is fixed inside the raw material chassis 5, and the output shaft of the fourth driving motor is equipped with a driving gear, which is engaged with the inner toothed belt 32. A raw material heat conduction chamber 33 is provided on the other side of the raw material chassis 5; the titanium tetrachloride raw material is put into the raw material circulation groove 29, and with the rotation of the circulating feeding belt 30 and the isolation of the partition 31, it moves in a circular motion along the raw material circulation groove 29, and is preheated by the heat absorbed by the raw material heat conduction chamber 33. The preheated titanium tetrachloride raw material is discharged from the raw material discharge barrel 7 at the bottom to realize the preheating of the titanium tetrachloride raw material, and the circulation process can efficiently utilize the heat recovered from waste heat.

[0032] When the present invention is used: a centrifugal fan is installed at the air inlet position of the air inlet hood 1, and the gas that releases a large amount of heat in the sponge titanium production process is introduced into the hot air inlet chamber 17 inside the preheating recovery device, and the various heat transfer oil circulation bottom pipes 10 and heat transfer oil circulation top pipes 11 in the device are connected in series and conducted, and heat transfer oil is injected. During the circulation of the heat transfer oil, heat is absorbed by each heat dissipation fin 15, and the heat of the hot air is absorbed by the heat absorption fin 14 in the hot air inlet chamber 17 and introduced into the heat dissipation fin 15 through the heat exchange block 13. The heat transfer oil in the high-temperature heat exchange chassis 2 and the low-temperature heat exchange chassis 4 absorbs heat and enters the raw material heat conduction chamber 33 in the raw material chassis 5. The titanium tetrachloride raw material is fed through the raw material feeding hopper 8 and input into the raw material through the raw material feeding tube 6. At the bottom of the material circulation trough 29, the rotation of the fourth drive motor causes the circulating feeding belt 30 to rotate, and the titanium tetrachloride raw material circulates along the raw material circulation trough 29 for one circle, and the titanium tetrachloride is preheated by the high temperature of the heat transfer oil in the raw material heat transfer chamber 33. The preheated titanium tetrachloride raw material is circulated to the raw material discharge barrel 7 at the bottom for discharge; the device is maintained by inspecting and maintaining the chassis 3 and the internal structure, and the electric push rod 24 extends the first cleaning chassis 21 to the inside of the high-temperature heat exchange chassis 2 or the low-temperature heat exchange chassis 4. The rotation of the first drive screw and the second drive screw adjusts the position of the lifting motor chassis 26, and then extends the cleaning brush rod 28 to the pores of the heat absorbing fins 14 respectively to clean the dust therein, and maintain the hot air inlet cavity 17 inside the entire device.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A waste heat recovery device for a titanium sponge production process, comprising an air intake hood (1), characterized in that: A high-temperature heat exchange chassis (2) is fixed vertically on one side of the air inlet hood (1), a maintenance chassis (3) is fixed on one side of the high-temperature heat exchange chassis (2), a raw material chassis (5) is fixed vertically on one side of the maintenance chassis (3), a raw material discharge barrel (7) is fixed at the bottom of the raw material chassis (5), a feeding mechanism is provided at the bottom of one side of the raw material chassis (5), and heat exchange components (12) are installed inside the high-temperature heat exchange chassis (2) and the low-temperature heat exchange chassis (4).

2. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: The heat exchange assembly (12) comprises a high-temperature heat exchange chassis (2) and a heat exchange block (13) nested at the top and bottom of a low-temperature heat exchange chassis (4); a heat dissipation fin (15) is fixed to the top of the heat exchange block (13); and a heat absorption fin (14) is fixed to the bottom of the heat exchange block (13).

3. The waste heat recovery device for titanium sponge production process according to claim 2, characterized in that: The high-temperature heat exchange chassis (2) and the low-temperature heat exchange chassis (4) are both provided with a heat transfer oil circulation chamber (16), and the high-temperature heat exchange chassis (2) and the low-temperature heat exchange chassis (4) are also provided with a hot air inlet cavity (17). The heat absorption fins (14) are located in the hot air inlet cavity (17) between the high-temperature heat exchange chassis (2) and the low-temperature heat exchange chassis (4), and the heat absorption fins (14) are arranged parallel to the air inlet direction of the hot air inlet cavity (17). The heat exhaust fins (15) are located in the high-temperature heat exchange chassis (2). and the heat transfer oil circulation chamber (16) of the low-temperature heat exchange chassis (4), and the heat exhaust fins (15) are parallel to the liquid flow direction of the heat transfer oil circulation chamber (16) in the high-temperature heat exchange chassis (2) and the low-temperature heat exchange chassis (4); the bottoms of the high-temperature heat exchange chassis (2), the low-temperature heat exchange chassis (4) and the raw material chassis (5) are all equipped with a heat transfer oil circulation bottom pipe (10); the tops of the high-temperature heat exchange chassis (2), the low-temperature heat exchange chassis (4) and the raw material chassis (5) are all equipped with a heat transfer oil circulation top pipe (11).

4. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: A motor frame (18) is fixed at the middle position of the maintenance chassis (3), a first drive motor (19) arranged horizontally is fixed at the middle position of the motor frame (18) by bolts, and circulating blades (20) are fixed to output shafts at both ends of the first drive motor (19).

5. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: The bottom of the low-temperature heat exchange chassis (4) is provided with a tail exhaust port.

6. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: Cleaning mechanisms are provided on both sides of the maintenance chassis (3), the cleaning mechanisms comprising maintenance chassis inner grooves (23) provided on the inner wall of the maintenance chassis (3), a horizontally arranged electric push rod (24) being fixed to the inner wall of the maintenance chassis inner groove (23), and a side fixing plate (25) being fixed to one end of the electric push rod (24) by means of bolts.

7. The waste heat recovery device for titanium sponge production process according to claim 6, characterized in that: The side fixing plate (25) is fixed with a horizontally arranged first cleaning chassis (21) by means of bolts, a first side groove is provided on the side wall of the first cleaning chassis (21), a second cleaning chassis (22) is slidably mounted inside the first side groove, a first driving screw is mounted inside the first side groove via a bearing, and the first driving screw is threadedly sleeved with the second cleaning chassis (22).

8. The waste heat recovery device for titanium sponge production process according to claim 7, characterized in that: A second side groove is provided on the side wall of the second cleaning chassis (22), and a lifting motor box (26) is slidably installed inside the second side groove. A second driving screw is installed in the second side groove of the side wall of the second cleaning chassis (22) through a bearing. The second driving screw is threadedly sleeved with the lifting motor box (26), and a second driving motor (27) is nested inside the lifting motor box (26). A cleaning brush rod (28) is fixed to the output shaft of the second driving motor (27).

9. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: The feeding mechanism includes a raw material feeding barrel (6) fixed at the bottom of the raw material machine case (5), a third driving motor (9) is fixed at the end of the raw material feeding barrel (6), an auger conveying shaft is installed inside the raw material feeding barrel (6) through a bearing, the auger conveying shaft is fixed to the output shaft of the third driving motor (9), and a raw material feeding hopper (8) is also fixed at the top of the raw material feeding barrel (6).

10. The waste heat recovery device for titanium sponge production process according to claim 1, characterized in that: A ring-shaped raw material circulation groove (29) is provided on one side of the raw material casing (5), a circulating feeding belt (30) is provided inside the raw material circulation groove (29), an array of partitions (31) are fixed to the outer wall of the circulating feeding belt (30), an inner toothed belt (32) is fixed to the inner wall of the circulating feeding belt (30), a fourth driving motor is fixed inside the raw material casing (5), a driving gear is installed on the output shaft of the fourth driving motor, and the driving gear is meshed with the inner toothed belt (32), and a raw material heat conduction chamber (33) is provided on the other side of the raw material casing (5).

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