CN113865335A

CN113865335A - Cement rotary kiln

Info

Publication number: CN113865335A
Application number: CN202111244773.0A
Authority: CN
Inventors: 万和花
Original assignee: Individual
Current assignee: Nanxiong Tongzhifu Cement Building Material Investment Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2021-12-31
Anticipated expiration: 2041-10-26

Abstract

The invention belongs to the field of cement calcination, and particularly relates to a cement rotary kiln which comprises supporting legs, wherein rotating ring supporting frames are fixedly arranged on the supporting legs at two ends, a motor support is fixedly arranged on the middle supporting leg, a first motor is fixedly arranged on the motor support and transmits power to a bevel gear, a gear ring in meshing transmission with the bevel gear is fixedly arranged on the outer cylindrical surface of the rotary kiln body above the motor support, a box body is connected to the higher vertical side of the rotary kiln body, a shell is fixedly arranged on the side, away from the rotary kiln body, of the box body, a conveying module is arranged in the box body, a condensate water module is arranged on the upper side of the shell, and a mixed desulfurization module is arranged in the shell. Can preheat cement, fix sulfur in the calcining process and treat redundant sulfur dioxide.

Description

Cement rotary kiln

Technical Field

The invention belongs to the field of cement calcination, and particularly relates to a rotary cement kiln.

Background

A production line consisting of a series of devices for producing cement. The method mainly comprises the processes of crushing and pre-homogenizing, raw material preparation and homogenizing, preheating and decomposing, cement clinker sintering, cement grinding and packaging and the like, wherein the cement needs to be calcined by a rotary kiln in the process of changing the raw material into the clinker, harmful gas sulfur dioxide is released in the calcining process, and the environment is polluted early.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a rotary cement kiln capable of fixing sulfur and treating redundant sulfur dioxide in the processes of preheating cement and calcining.

In order to achieve the purpose, the invention adopts the following technical scheme:

preferably, the rotary cement kiln comprises supporting legs, wherein rotating ring supporting frames are fixedly arranged at two ends of the supporting legs, a motor support is fixedly arranged on the middle supporting leg, a first motor is fixedly arranged on the motor support, the first motor transmits power to a bevel gear, a gear ring in meshing transmission with the bevel gear is fixedly arranged on the outer cylindrical surface of the rotary kiln body above the motor support, a box body is connected to the higher side of the vertical position of the rotary kiln body, a shell is fixedly arranged on the side, away from the rotary kiln body, of the box body, a conveying module is arranged in the box body, a condensate water module is arranged on the upper side of the shell, and a mixed desulfurization module is arranged in the shell.

Preferably, a burner spray pipe is arranged on one side, away from the box body, of the rotary kiln body and connected into the rotary kiln body, a discharge hole is formed in one end, close to the burner spray pipe, of the rotary kiln body, a water inlet and a desulfurizer inlet are formed in the upper side and the lower side of one side face in the outer surface of the shell respectively, a feed inlet is formed in one side, away from the water inlet, of the box body, and a sulfur dioxide detection module for detecting gas components is fixedly arranged on the inner surface of the upper side of the vertical part of the box body.

Preferably, transmission module is including locating the driving shaft that bottom half wherein one end link up the box, the driving shaft passes the box and is connected to the second motor that sets firmly in the box surface, evenly is equipped with a plurality of axis of rotation from the driving shaft to rotary kiln body direction along the box in, the axis of rotation is rotated and is connected and locate on the box inner wall, the roll is equipped with the conveyer belt on driving shaft and the axis of rotation outer face of cylinder, the expansion plate has set firmly on the conveyer belt surface, the expansion plate extension has linked firmly the fortune material baffle.

Preferably, the condensed water module comprises a condensing plate fixedly arranged on the inner surface of the upper side of the transverse part of the box body, water collecting grooves are fixedly arranged on the inner surfaces of the two sides of the box body below the condensing plate, and a water pipe is connected to the tail part of one end, close to the shell, of each water collecting groove and penetrates through the box body to be connected into the shell from the outer surface of the box body.

Preferably, mix desulfurization module includes the diaphragm in casing middle section, the horizontal version downside is used for the water storage, the horizontal version is close to feed inlet one side upper surface and has set firmly the baffle, the baffle is kept away from feed inlet one side and has set firmly metering module, the powder is deposited to metering module place side, metering module link up the baffle and links into the opposite side, the baffle opposite side is equipped with undulant chamber and is linked together with metering module, undulant chamber is kept away from box one side and has set firmly first water pump, first water pump below has connect first water-absorbing pipe and lets in horizontal version below, undulant chamber opposite side is equipped with mixed liquid bin.

Preferably, the mixed liquid storage box upside has set firmly the second water pump, it has the second to absorb water the pipe and lets in mixed liquid storage box to connect below the second water pump it even has the transfer line to let in the entity of box to be close to box one side of second water pump, the transfer line has a plurality of groups along box horizontal direction evenly distributed, it has the atomising head to insert the box intracavity in the transfer line upper end.

Preferably, the atomizing head includes the hollow shaft that links to each other with transfer line and box are fixed, the hollow shaft is outer to rotate and is equipped with the rotor, the hollow shaft links to each other the position with the transfer line and is equipped with the pressure valve, the slant evenly is equipped with a plurality of injection pipes on the rotor, the injection pipe is kept away from pressure valve one end and is equipped with the atomizing spout.

Has the advantages that:

1. can utilize calcined high-temperature flue gas to carry out advanced waste heat on cement raw materials

2. Can fix sulfur in the preheating and calcining processes and reduce the emission of sulfur dioxide

3. Can recycle the water in the flue gas, manufacture a desulfurizer and further purify sulfur dioxide in the flue gas

Drawings

FIG. 1 is a perspective view of a solid of the present invention

FIG. 2 is a perspective cross-sectional view of the present invention

FIG. 3 is a top view of the present invention

FIG. 4 is a sectional view taken along line A-A of FIG. 3

FIG. 5 is a sectional view taken along line B-B of FIG. 3

FIG. 6 is a cross-sectional view taken at C-C in FIG. 5

FIG. 7 is a partial enlarged view of FIG. 5 at D

FIG. 8 is a partial enlarged view of E in FIG. 7

In the figure: 11. supporting legs; 12. a rotating ring; 13. a motor support; 14. a first motor; 15. a ring gear; 16. a burner nozzle; 17. a box body; 18. a housing; 19. a bevel gear; 20. collecting a water tank; 21. a condensing plate; 22. a water pipe; 23. a drive shaft; 24. a second motor; 25. a rotating shaft; 26. a conveyor belt; 27. a retractable plate; 28. a material conveying baffle plate; 29. a feed inlet; 30. a water inlet; 31. a desulfurizer inlet; 32. a discharge port; 33. a metering module; 34. a mixed desulfurization module; 35. a sulfur dioxide detection module; 36. a first water suction pipe; 37. a first water pump; 38. A wave chamber; 39. shifting the blades; 40. a shifting shaft; 41. a mixed liquid storage tank; 42. a second suction pipe; 43. a second water pump; 44. a transfusion tube; 45. an atomizing head; 46. a rotating body; 47. An injection pipe; 48. an atomizing nozzle; 49. a pressure valve; 50. a rotating ring support frame; 51. a rotary kiln body;

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the terms "inside", "below", and the like refer to orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention conventionally place when used, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Referring to the attached drawings 1-8, the rotary cement kiln comprises supporting legs 11, rotating ring supporting frames 50 are fixedly arranged on the supporting legs 11 at two ends, a motor support 13 is fixedly arranged on the middle supporting leg 11, a first motor 14 is fixedly arranged on the motor support 13, the first motor 14 transmits power to a bevel gear 19, a gear ring 15 meshed with the bevel gear 19 is fixedly arranged on the outer cylindrical surface of a rotary kiln body 51 above the motor support 13, a box body 17 is connected to the higher side of the vertical position of the rotary kiln body 51, a shell 18 is fixedly arranged on the side, away from the rotary kiln body 51, of the box body 17, a conveying module is arranged in the box body 17, a condensate water module is arranged on the upper side of the shell 18, and a mixed desulfurization module 34 is arranged in the shell 18.

Furthermore, a burner nozzle 16 is arranged on one side of the rotary kiln body 51 far away from the box body 17 and connected into the rotary kiln body 51, a discharge hole 32 is formed in one end of the rotary kiln body 51 close to the burner nozzle 16, a water inlet 30 and a desulfurizer inlet 31 are respectively formed in the upper side and the lower side of one side surface of the outer surface of the shell 18, a feed hole 29 is formed in one side of the box body 17 far away from the water inlet 30, and a sulfur dioxide detection module 35 for detecting gas components is fixedly arranged on the inner surface of the upper side of the vertical part of the box body 17.

Further, the transmission module is including locating box 17 bottom wherein one end link up box 17's driving shaft 23, driving shaft 23 passes box 17 and is connected to the second motor 24 who sets firmly in the box 17 surface, evenly be equipped with a plurality of axis of rotation 25 along box 17 interior from driving shaft 23 to the rotary kiln body 51 direction, axis of rotation 25 rotates to be connected and locates on the box 17 inner wall, it is equipped with conveyer belt 26 to roll on driving shaft 23 and the axis of rotation 25 outer cylindrical surface, the expansion plate 27 has set firmly on the conveyer belt 26 surface, the expansion plate 27 extension has linked firmly fortune material baffle 28.

Furthermore, the condensed water module comprises a condensing plate 21 fixedly arranged on the inner surface of the upper side of the transverse part of the box body 17, a water collecting tank 20 is fixedly arranged on the inner surfaces of the two sides of the box body 17 below the condensing plate 21, and a water pipe 22 is connected to the tail part of one end, close to the shell 18, of the water collecting tank 20 and penetrates through the box body 17 to be connected into the shell 18 from the outer surface of the box body 17.

Further, mix desulfurization module 34 and include the diaphragm in casing 18 middle section, the diaphragm downside is used for the water storage, the diaphragm is close to feed inlet 29 one side upper surface and has set firmly the baffle, the baffle is kept away from feed inlet 29 one side and has set firmly metering module 33, the powder is deposited to metering module 33 place side, metering module 33 link up the baffle and even go into the opposite side, the baffle opposite side is equipped with undulant chamber 38 and is linked together with metering module 33, undulant chamber 38 keeps away from box 17 one side and has set firmly first water pump 37, it has first water absorption pipe 36 to let in the diaphragm below to connect below first water pump 37, undulant chamber 38 opposite side is equipped with mixed liquid bin 41.

Furthermore, the upper side of the mixed liquid storage tank 41 is fixedly provided with a second water pump 43, a second water suction pipe 42 is connected below the second water pump 43 and is introduced into the mixed liquid storage tank 41, one side, close to the box body 17, of the second water pump 43 is connected with an infusion pipe 44 and is introduced into the entity of the box body 17, the infusion pipe 44 is uniformly distributed with a plurality of groups along the horizontal direction of the box body 17, and the upper end of the infusion pipe 44 is connected into the cavity of the box body 17 and is connected with an atomizing head 45.

Further, the atomizing head 45 comprises a hollow shaft fixedly connected with the infusion tube 44 and the box body 17, a rotating body 46 is rotatably arranged outside the hollow shaft, a pressure valve 49 is arranged at the connecting part of the hollow shaft and the infusion tube 44, a plurality of injection tubes 47 are uniformly and obliquely arranged on the rotating body 46, and atomizing nozzles 48 are arranged at the ends, far away from the pressure valve 49, of the injection tubes 47.

Principle of operation

Starting a first motor 14, the first motor 14 drives a bevel gear 19 to rotate, the bevel gear 19 is in meshing transmission with a gear ring 15, the gear ring 15 drives a rotary kiln body 51 to rotate, a burner is started, the burner conveys heat into the rotary kiln body 51 through a burner nozzle 16, a second motor 24 and a sulfur dioxide detection module 35 are started, the second motor 24 drives a conveyer belt 26 to rotate around a rotating shaft 25 and a driving shaft 23, an expansion plate 27 on the conveyer belt 26 moves along with the conveyer belt 26, when the expansion plate 27 moves to a position with insufficient space, a material conveying baffle 28 is pressed into the expansion plate 27 by the inner surface of a box body 17, the material conveying baffle 28 is pressed into the expansion plate 27 when the material conveying baffle 28 rotates to a position close to the driving shaft 23, when the expansion plate 27 rotates to a position below the driving shaft 23, the material conveying baffle 28 is gradually popped out, cement raw materials mixed with calcium powder, barium powder and metal catalyst are poured into the box body 17 through the bevel gear 19, fortune material baffle 28 turns over the raw materials that mix on conveyer belt 26, finally transport to rotatory rotary kiln body 51 via conveyer belt 26 in, in the transportation, the high temperature flue gas that produces in the rotary kiln body 51 can preheat the raw materials that mix when passing through box 17, preheat and calcine the in-process, the cement raw materials can be handled by additive process solid sulphur, reduce the sulfur dioxide that produces in calcining simultaneously, also can partly desulfurize when producing the cement raw materials that sulfur dioxide passed through preheating in the calcination process.

When the high-temperature flue gas contacts the condensing plate 21, water vapor contained in the flue gas can be condensed and slides into the obliquely-placed water collecting tank 20 along the condensing plate 21, the condensed water is conveyed through the water pipe 22 and conveyed into the shell 18, when the sulfur dioxide detection module 35 detects that sulfur dioxide in the discharged flue gas exceeds the standard, the first water pump 37 and the second water pump 43 are started, the first water pump 37 pumps water below into the fluctuation cavity 38 through the first water suction pipe 36, the metering module 33 pushes the calcium powder, the barium powder and the metal catalyst powder at the same side to the fluctuation cavity 38, the water pumped from the first water pump 37 flows into the storage tank 41 through the fluctuation cavity 38, meanwhile, the water pushes the mixed liquid stirring blade 39 to drive the stirring shaft 40 to rotate, the stirring blade 39 stirs the desulfurizer pushed by the metering module 33 to mix with the water, the second water pump 43 conveys the desulfurizer into the liquid conveying pipe 44 through the second water suction pipe 42, after the pressure of the desulfurizer reaches the pressure set by the pressure valve 49, the desulfurizer enters the injection pipe 47 in the rotating body 46 through the hollow shaft, and is atomized and sprayed out through the atomizing nozzle 48 to drive the rotating body 46 to rotate around the hollow shaft, so that sulfur dioxide in the flue gas is desulfurized.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A cement rotary kiln comprises supporting legs (11), and is characterized in that rotating ring supporting frames (50) are fixedly arranged on the supporting legs (11) at two ends, a motor support (13) is fixedly arranged on the supporting leg (11) in the middle, a first motor (14) is fixedly arranged on the motor support (13), the first motor (14) transmits power to the bevel gear (19), a gear ring (15) which is meshed with the bevel gear (19) for transmission is fixedly arranged on the outer cylindrical surface of the rotary kiln body (51) above the motor support (13), the higher side of the vertical position of the rotary kiln body (51) is connected with a box body (17), a shell (18) is fixedly arranged on one side of the box body (17) far away from the rotary kiln body (51), the device is characterized in that a conveying module is arranged in the box body (17), a condensed water module is arranged on the upper side of the shell (18), and a mixed desulfurization module (34) is arranged in the shell (18).

2. The rotary cement kiln as claimed in claim 1, wherein a burner nozzle (16) is arranged on one side of the rotary kiln body (51) far away from the box body (17) and connected into the rotary kiln body (51), a discharge hole (32) is formed in one end of the rotary kiln body (51) close to the burner nozzle (16), a water inlet (30) and a desulfurizer inlet (31) are respectively formed in the upper side and the lower side of one side surface of the outer surface of the shell (18), a feed hole (29) is formed in one side of the box body (17) far away from the water inlet (30), and a sulfur dioxide detection module (35) for detecting gas components is fixedly arranged on the inner surface of the upper side of the vertical part of the box body (17).

3. The rotary cement kiln as claimed in claim 2, wherein the transmission module comprises a driving shaft (23) which is arranged at the bottom of the box body (17) and one end of which penetrates through the box body (17), the driving shaft (23) penetrates through the box body (17) and is connected to a second motor (24) which is fixedly arranged on the outer surface of the box body (17), a plurality of rotating shafts (25) are uniformly arranged in the box body (17) from the driving shaft (23) to the rotary kiln body (51), the rotating shafts (25) are rotatably connected to the inner wall of the box body (17), a conveying belt (26) is arranged on the outer cylindrical surfaces of the driving shaft (23) and the rotating shafts (25) in a rolling manner, a telescopic plate (27) is fixedly arranged on the outer surface of the conveying belt (26), and a conveying baffle (28) is fixedly connected to the extending part of the telescopic plate (27).

4. The rotary cement kiln as claimed in claim 3, wherein the condensate module comprises a condensation plate (21) fixedly arranged on the inner surface of the upper side of the transverse part of the box body (17), a water collecting tank (20) is fixedly arranged on the inner surfaces of the two sides of the box body (17) below the condensation plate (21), and a water pipe (22) is connected to the tail part of one end, close to the shell body (18), of the water collecting tank (20) and penetrates through the box body (17) to be connected into the shell body (18) from the outer surface of the box body (17).

5. The rotary cement kiln as claimed in claim 4, wherein the mixed desulfurization module (34) comprises a transverse plate at the middle section of the housing (18), the transverse plate is used for storing water at the lower side thereof, a partition plate is fixedly arranged on the upper surface of the transverse plate at the side close to the feed port (29), a metering module (33) is fixedly arranged at the side of the partition plate away from the feed port (29), powder is stored at the side of the metering module (33), the metering module (33) penetrates through the partition plate and is connected to the other side thereof, a fluctuation cavity (38) is arranged at the other side of the partition plate and is communicated with the metering module (33), a first water pump (37) is fixedly arranged at the side of the fluctuation cavity (38) away from the housing (17), a first water suction pipe (36) is connected below the first water pump (37) and is communicated with the transverse plate, and a mixed liquid storage tank (41) is arranged at the other side of the fluctuation cavity (38).

6. The rotary cement kiln as claimed in claim 5, wherein a second water pump (43) is fixedly arranged on the upper side of the mixed liquid storage tank (41), a second water suction pipe (42) connected below the second water pump (43) and communicated into the mixed liquid storage tank (41), a liquid conveying pipe (44) connected to one side of the second water pump (43) close to the tank body (17) and communicated into the solid body of the tank body (17), a plurality of groups of liquid conveying pipes (44) are uniformly distributed along the horizontal direction of the tank body (17), and an atomizing head (45) connected to the upper end of the liquid conveying pipe (44) and communicated into the cavity of the tank body (17).

7. The cement rotary kiln according to claim 6, wherein the atomizing head (45) comprises a hollow shaft fixedly connected with the liquid conveying pipe (44) and the box body (17), a rotating body (46) is rotatably arranged outside the hollow shaft, a pressure valve (49) is arranged at the connecting part of the hollow shaft and the liquid conveying pipe (44), a plurality of spraying pipes (47) are uniformly arranged on the rotating body (46) in an inclined manner, and an atomizing nozzle (48) is arranged at one end of each spraying pipe (47) far away from the pressure valve (49).