Waste heat recovery boiler for high titanium slag production

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery boiler for high titanium slag production, which comprises a base. Two connecting pipes are fixed to the rear end of the shell, two hollow connecting discs are arranged on the rear side of each connecting pipe, and a plurality of heat exchange pipes are fixed to the position between every two adjacent connecting discs. An air pipe is fixed between the two connecting discs at the rear end; a plurality of hollow dust filtering cylinders are rotationally mounted at the inner bottom of the smoke inlet cavity; when high-temperature flue gas enters the multiple heat exchange pipes, due to the fact that the heat exchange pipes are immersed in the liquid in the heating cavity, heat of the heat exchange pipes is absorbed by the liquid, and the liquid can be used as production and domestic water after being heated; before entering the boiler, the flue gas is filtered by the plurality of dust filtering cylinders, so that particulate matters and the like in the flue gas can be filtered, impurities and the like are further prevented from entering the heat exchange tube to be hardened and accumulated, the smoothness and the heat exchange effect of the heat exchange tube are ensured, and the waste heat recovery efficiency of the boiler is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery boiler for high-titanium slag production. Background Art

[0002] High-titanium slag is a metallurgical ore rich in titanium, which is widely used in the production of titanium metal and its compounds. In the production process of high-titanium slag, a large amount of high-temperature flue gas will be generated in multiple stages (such as smelting). This type of flue gas contains a large amount of heat energy. Effective recovery and utilization of high-temperature flue gas will significantly reduce production costs and improve energy utilization efficiency.

[0003] A waste heat recovery boiler is a heat exchanger that uses the high-temperature logistics generated in the production process as a heat source to produce steam. It has the characteristics of high temperature and high pressure, rapid cooling, and strict control of gas outlet temperature. The high-temperature flue gas generated in the production process of high-titanium slag can be recovered through a waste heat recovery boiler for heat energy recovery. When the waste heat recovery boiler is in use, the high-temperature flue gas from the production process of high-titanium slag directly enters the heat exchange structure in the waste heat recovery boiler. However, there are still a large number of particulate matter in the high-temperature flue gas generated in the smelting process of high-titanium slag. If such particulate matter and other impurities directly enter the heat exchange structure without treatment, it is easy to cause the impurities to accumulate and compact in the heat exchange structure, which not only affects the heat exchange efficiency of the heat exchange structure, but also easily causes adverse phenomena such as pipeline blockage. In view of this, we propose a waste heat recovery boiler for high-titanium slag production. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a waste heat recovery boiler for high-titanium slag production.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The waste heat recovery boiler produced by high-titanium slag includes a base, a boiler is arranged on the top of the base, a furnace is opened at the lower part of the inside of the boiler, a heating chamber is opened above the furnace, a mounting groove is opened at the front end of the heating chamber, a detachable shell is installed on the front side of the mounting groove, an air intake chamber and an exhaust chamber are opened at both sides of the inside of the shell, and an air intake port and an exhaust port are installed at the front end of the shell; two connecting pipes are fixed at the rear end of the shell, two hollow connecting plates are arranged on the rear side of the connecting pipes, and a plurality of heat exchange pipes are fixed between two adjacent connecting plates; an air pipe is fixed between the two connecting plates at the rear end;

[0007] A dust removal part is installed on the front side of the boiler, and the dust removal part includes a box body fixed to the base, a smoke inlet pipe is installed at the front end of the box body, a smoke exhaust pipe is installed on the rear end face of the box body, a smoke exhaust chamber connected with the smoke exhaust pipe is installed at the lower part of the interior of the box body, and a smoke inlet chamber connected with the smoke inlet pipe is opened above the smoke exhaust pipe; a curved pipe connected with the air inlet is installed at the smoke exhaust pipe; a plurality of hollow dust filter cartridges are rotatably installed at the inner bottom of the smoke inlet chamber, and the dust filter cartridges are open at the bottom and are connected with the smoke exhaust chamber; the rear end face of the smoke inlet chamber is open, and a detachable cover plate is installed at the opening of the rear end face of the smoke inlet chamber, a plurality of scrapers are installed on the front end face of the cover plate, and the front end of the scraper is pressed against the outer wall of the dust filter cartridge.

[0008] Furthermore, a connecting shaft is coaxially fixed to the top of the dust filter cylinder, the connecting shaft passes through the top of the box, and a transmission assembly is provided between two adjacent connecting shafts; a motor is also installed above the box, and the output shaft of the motor is coaxially keyed to the connecting shaft located in the middle.

[0009] Furthermore, two supports are fixed to the top of the base by bolts, and the boiler is fixedly connected to the supports by bolts.

[0010] Furthermore, two adjacent transmission assemblies are staggered, and the transmission assembly includes two symmetrical pulleys, a belt is sleeved between the two pulleys, and a connecting shaft passes through the pulleys and is coaxially keyed to the pulleys.

[0011] Furthermore, a U-shaped bracket is fixedly connected to the top of the box body by bolts, the top end of the connecting shaft is rotatably connected to the bracket by a bearing, and the motor is fixedly connected to the bracket by bolts.

[0012] Furthermore, the cross-sectional shape of the cover plate is rectangular, and the cover plate is fixedly connected to the box body by bolts.

[0013] Furthermore, the plurality of heat exchange tubes are distributed in a ring shape with equal intervals, and both ends of the heat exchange tubes are fixedly connected to the connecting plate by bolts.

[0014] Furthermore, a mounting edge is installed at the rear end of the outer wall of the shell, and the mounting edge is fixedly connected to the boiler by bolts.

[0015] Furthermore, a water inlet and a water outlet are installed at the upper and lower sides of the rear end of the boiler, and both the water inlet and the water outlet are connected to the heating chamber.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Through the boiler and dust removal part: On the one hand, when the high-temperature flue gas enters into the multiple heat exchange tubes, the heat exchange tubes are heated, and the heat exchange tubes are immersed in the liquid in the heating chamber, and the heat of the heat exchange tubes is absorbed by the liquid, and the heated liquid can be used for production and domestic water; on the other hand, before the flue gas enters the boiler, it is filtered by multiple dust filters to filter out particulate matter in the flue gas, thereby preventing impurities from entering the heat exchange tubes and causing them to harden and accumulate, ensuring the patency and heat exchange effect of the heat exchange tubes, and ensuring the waste heat recovery efficiency of the boiler;

[0018] 2. Through the rotation of multiple dust filter cartridges, the scraper will scrape off the particles adhering to the outer wall of the dust filter cartridge. This design can prevent the accumulation of particles and the like and affect the filtering effect of the dust filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a structural cross-sectional view of the boiler in the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of the utility model;

[0022] Figure 4 It is a partial structural cross-sectional view of the utility model;

[0023] Figure 5 It is a schematic diagram of the explosion structure of the dust removal part in the utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the structure of the dust removal unit in the present invention.

[0025] In the figure:

[0026] 1. Base; 10. Support;

[0027] 2. Boiler; 20. Furnace; 21. Heating chamber; 22. Water inlet; 23. Drain outlet; 24. Mounting slot; 25. Shell; 251. Exhaust chamber; 252. Inlet chamber; 253. Exhaust port; 254. Inlet port; 255. Mounting edge; 26. Connecting plate; 27. Air pipe; 28. Heat exchange tube; 29. ​​Connecting tube;

[0028] 3. Dust removal unit; 30. Box body; 301. Smoke inlet chamber; 302. Smoke exhaust chamber; 303. Smoke inlet pipe; 304. Smoke exhaust pipe; 31. Dust filter cartridge; 32. Connecting shaft; 33. Pulley; 34. Belt; 35. Motor; 36. Bracket; 37. Cover plate; 38. Scraper; 39. Bend pipe. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] This embodiment provides a technical solution:

[0031] See also Figure 1-Figure 6 As shown, the waste heat recovery boiler produced by high-titanium slag includes a base 1, a boiler 2 is arranged above the base 1, a furnace 20 is opened at the lower part of the inside of the boiler 2, a heating chamber 21 is opened above the furnace 20, a mounting groove 24 is opened at the front end of the heating chamber 21, a detachable shell 25 is installed on the front side of the mounting groove 24, an air intake chamber 252 and an exhaust chamber 251 are respectively opened at both sides of the inside of the shell 25, and an air intake port 254 and an exhaust port 253 are respectively installed at the front end of the shell 25; two connecting pipes 29 are fixed to the rear end of the shell 25, and the two ends of the connecting pipe 29 are fixedly connected to the shell 25 and the connecting plate 26 by bolts, and two hollow connecting plates 26 are arranged on the rear side of the connecting pipe 29, and a plurality of heat exchange pipes 28 are fixed between two adjacent connecting plates 26; an air pipe 27 is fixed between the two connecting plates 26 at the rear end, and the air pipe 27 is connected to the connecting plate 26 by bolts The receiving plate 26 is fixed; a dust removal unit 3 is installed on the front side of the boiler 2, and the dust removal unit 3 includes a box body 30 fixed to the base 1, a smoke inlet pipe 303 is installed at the front end of the box body 30, and a smoke exhaust pipe 304 is installed at the rear end face of the box body 30, and a smoke exhaust cavity 302 connected to the smoke exhaust pipe 304 is installed at the lower part of the box body 30, and a smoke inlet cavity 301 connected to the smoke inlet pipe 303 is opened above the smoke exhaust pipe 304; a smoke exhaust pipe 304 is installed at the bottom of the box body 30. There is a curved pipe 39 connected to the air inlet 254; a plurality of hollow dust filter cartridges 31 are rotatably installed at the inner bottom of the smoke inlet chamber 301, and the dust filter cartridges 31 are open at the bottom and connected to the smoke exhaust chamber 302; the rear end face of the smoke inlet chamber 301 is open, and a detachable cover plate 37 is installed at the opening of the rear end face of the smoke inlet chamber 301, and a plurality of scrapers 38 are installed on the front end face of the cover plate 37, and the front end of the scraper 38 is pressed against the outer wall of the dust filter cartridge 31.

[0032] Furthermore, the top of the dust filter cylinder 31 is coaxially fixed with a connecting shaft 32, which passes through the top of the box body 30, and a transmission assembly is provided between two adjacent connecting shafts 32; a motor 35 is also installed above the box body 30, and the output shaft of the motor 35 is coaxially keyed to the connecting shaft 32 located in the middle. Two adjacent transmission assemblies are staggered, and the transmission assembly includes two symmetrical pulleys 33, a belt 34 is sleeved between the two pulleys 33, and the connecting shaft 32 passes through the pulley 33 and is coaxially keyed to the pulley 33. The transmission assembly plays a linkage role. This design is conducive to driving multiple connecting shafts 32 and multiple dust filter cylinders 31 to rotate through the motor 35, and through the rotation of multiple dust filter cylinders 31, it is convenient to clean the outer wall of the dust filter cylinder 31.

[0033] In this embodiment, two supports 10 are fixed to the top of the base 1 by bolts, and the boiler 2 is fixedly connected to the supports 10 by bolts. The supports 10 play a role of stably supporting and fixing the boiler 2.

[0034] In this embodiment, a U-shaped bracket 36 is fixedly connected to the top of the box body 30 by bolts, the top end of the connecting shaft 32 is rotatably connected to the bracket 36 by a bearing, and the motor 35 is fixedly connected to the bracket 36 by bolts. The bracket 36 plays a stable supporting role for the motor 35, ensuring the installation stability and reliability of the motor 35.

[0035] In this embodiment, the cross-section of the cover plate 37 is rectangular, and the cover plate 37 is fixedly connected to the box body 30 by bolts. The bolt fixing method is convenient for disassembly and assembly of the cover plate 37, and then convenient for opening the smoke inlet chamber 301 for cleaning.

[0036] In this embodiment, a plurality of heat exchange tubes 28 are distributed in an annular manner with equal spacing, and both ends of the heat exchange tubes 28 are fixedly connected to the connecting plate 26 by bolts. The bolt fixing method ensures the installation reliability of the heat exchange tubes 28, and the arrangement of a plurality of heat exchange tubes 28 can improve the efficiency of heat exchange.

[0037] In this embodiment, a mounting edge 255 is installed at the rear end of the outer wall of the shell 25, and the mounting edge 255 is fixedly connected to the boiler 2 by bolts. This mounting method has the advantage of reliable mounting and ensures the mounting stability of the shell 25.

[0038] In this embodiment, the rear end of the boiler 2 is provided with a water inlet 22 and a water outlet 23 at the upper and lower sides, respectively, and both the water inlet 22 and the water outlet 23 are connected to the heating chamber 21. This design facilitates liquid to enter and exit the heating chamber 21.

[0039] It should be added that Figure 4The lines with black arrows are used to indicate the flow direction of the high-temperature flue gas. The heat exchange process can be effectively performed by the flow of the high-temperature flue gas in the structures such as the multiple heat exchange tubes 28.

[0040] It is worth noting that the motor 35 involved in this embodiment is an existing conventional technology and will not be described in detail here.

[0041] When in use, the user first turns on the power of the motor 35, and the motor 35 starts to work. The output shaft of the motor 35 drives the connecting shaft 32 to rotate. Driven by the multiple pulleys 33 and the belt 34, the multiple connecting shafts 32 rotate and drive the multiple dust filter cartridges 31 to rotate. At the same time, the high-temperature flue gas enters the smoke inlet chamber 301 through the smoke inlet pipe 303. At the same time, the flue gas passes through the dust filter cartridge 31, and the particles in the flue gas are intercepted on the outer wall of the dust filter cartridge 31. As the dust filter cartridge 31 rotates, the scraper 3 8 scrapes off impurities such as particulate matter, and then the filtered smoke enters the smoke exhaust chamber 302, and enters the air inlet chamber 252 through the bend pipe 39, and at the same time, the high-temperature smoke enters the multiple connecting plates 26 and the multiple heat exchange tubes 28. At the same time, the heat of the high-temperature smoke is transferred to the liquid in the heating chamber 21 through the heat exchange tube 28, and the temperature of the liquid gradually increases. As the smoke continues to move, the temperature of the smoke gradually decreases. Finally, the cooled smoke is discharged to the outside through the smoke exhaust chamber 302 and the smoke exhaust pipe 304.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A waste heat recovery boiler for high-titanium slag production, comprising a base (1), a boiler (2) being arranged above the base (1), a furnace (20) being arranged at the lower part of the interior of the boiler (2), and a heating chamber (21) being arranged above the furnace (20), characterized in that: The front end of the heating chamber (21) is provided with a mounting groove (24), a detachable shell (25) is installed on the front side of the mounting groove (24), an air inlet cavity (252) and an air outlet cavity (251) are respectively provided on both sides of the interior of the shell (25), and an air inlet port (254) and an air outlet port (253) are respectively installed on the front end of the shell (25); two connecting pipes (29) are fixed to the rear end of the shell (25), two hollow connecting plates (26) are provided on the rear side of the connecting pipes (29), and a plurality of heat exchange pipes (28) are fixed between two adjacent connecting plates (26); an air pipe (27) is fixed between the two connecting plates (26) at the rear end; A dust removal unit (3) is installed at the front side of the boiler (2), and the dust removal unit (3) comprises a box body (30) fixed to the base (1), a smoke inlet pipe (303) is installed at the front end of the box body (30), a smoke exhaust pipe (304) is installed at the rear end surface of the box body (30), a smoke exhaust cavity (302) connected to the smoke exhaust pipe (304) is installed at the lower part of the box body (30), and a smoke inlet cavity (301) connected to the smoke inlet pipe (303) is opened above the smoke exhaust pipe (304); a smoke exhaust pipe (304) is installed at the lower part of the box body (30). A curved pipe (39) is provided which is connected to the air inlet (254); a plurality of hollow dust filter cartridges (31) are rotatably mounted on the inner bottom of the smoke inlet chamber (301); the dust filter cartridges (31) are open at the bottom and are connected to the smoke exhaust chamber (302); the rear end surface of the smoke inlet chamber (301) is open, and a detachable cover plate (37) is installed at the opening of the rear end surface of the smoke inlet chamber (301); a plurality of scrapers (38) are installed on the front end surface of the cover plate (37), and the front ends of the scrapers (38) are pressed against the outer wall of the dust filter cartridge (31).

2. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: A connecting shaft (32) is coaxially fixed to the top of the dust filter cylinder (31), and the connecting shaft (32) passes through the top of the box body (30). A transmission assembly is provided between two adjacent connecting shafts (32). A motor (35) is also installed above the box body (30), and the output shaft of the motor (35) is coaxially key-connected to the connecting shaft (32) located in the middle.

3. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: Two supports (10) are fixed to the top of the base (1) by means of bolts, and the boiler (2) is fixedly connected to the supports (10) by means of bolts.

4. The waste heat recovery boiler for high titanium slag production according to claim 2 is characterized in that: The two adjacent transmission assemblies are arranged in a staggered manner. The transmission assembly comprises two symmetrical pulleys (33). A belt (34) is sleeved between the two pulleys (33). The connecting shaft (32) passes through the pulley (33) and is coaxially key-connected with the pulley (33).

5. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: The top of the box body (30) is fixedly connected to a U-shaped bracket (36) by bolts, the top end of the connecting shaft (32) is rotatably connected to the bracket (36) by a bearing, and the motor (35) is fixedly connected to the bracket (36) by bolts.

6. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: The cross-sectional shape of the cover plate (37) is rectangular, and the cover plate (37) is fixedly connected to the box body (30) by bolts.

7. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: The plurality of heat exchange tubes (28) are distributed in a ring-like shape at equal intervals, and both ends of the heat exchange tubes (28) are fixedly connected to the connecting plate (26) by bolts.

8. The waste heat recovery boiler for high titanium slag production according to claim 1 is characterized in that: A mounting edge (255) is installed at the rear end of the outer wall of the shell (25), and the mounting edge (255) is fixedly connected to the boiler (2) by bolts.

9. The waste heat recovery boiler for high titanium slag production according to claim 1, characterized in that: The rear end of the boiler (2) is provided with a water inlet (22) and a water outlet (23) at the upper and lower sides, respectively, and both the water inlet (22) and the water outlet (23) are connected to the heating chamber (21).

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