Cement rotary kiln dry denitration equipment

Abstract

The utility model provides a cement rotary kiln dry method denitration equipment belongs to rotary kiln technical field, including base, rotary kiln subassembly and feeding subassembly, the side middle part of base is installed with support, and the one end of base is installed with smoke chamber, the utility model discloses: be equipped with storage bin in the side of rotary kiln cylinder, and the bottom of storage bin is connected with the downcomer, and the inside de pin agent of storage bin falls to the inside screw feeder through the downcomer, and the inside de pin agent is sent into the feeding pipe of screw feeder work, and the inside de pin agent is blown into rotary kiln cylinder by the work of roots blower, make de pin agent and the nitric oxide in the inside rotary kiln contact fully, thereby improve de pin effect, replace manual feeding mode through the feeding structure that is equipped with, and the solenoid valve is equipped with in the junction of screw feeder and feeding pipe, and the delivery of de pin agent is convenient for automatic control.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, specifically to a dry denitrification device for cement rotary kilns. Background Technology

[0002] Cement rotary kilns are crucial equipment in cement production, primarily used for firing cement clinker. During this firing process, large amounts of nitrogen oxides (NOx) are generated, posing serious threats to the environment and human health. To reduce NOx emissions, dry denitrification technology is commonly employed in cement rotary kilns. This technology utilizes gaseous reactants such as ammonia or urea to chemically react with NOx in the flue gas, reducing it to nitrogen and water. Since water is not required as a reaction medium, no wastewater is generated, avoiding secondary pollution. However, existing dry denitrification methods involve manually feeding the denitrifying agent into the furnace, which prevents the agent from fully reacting with the NOx in the flue gas, thus reducing the denitrification effect. Utility Model Content

[0003] The purpose of this invention is to provide a dry denitrification equipment for cement rotary kilns to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dry denitrification device for a cement rotary kiln, comprising a base, a rotary kiln assembly, and a feeding assembly;

[0005] Wherein: a support is installed in the middle of one side of the base, and a smoke chamber is installed at one end of the base;

[0006] The rotary kiln assembly includes a rotary kiln cylinder disposed on the top of the base. The front end of the rotary kiln cylinder is provided with a feed port, and the rear end of the rotary kiln cylinder extends into the smoke chamber. A drive motor is fixedly installed on the top of the support. A reduction gearbox is fixedly installed on the output end of the drive motor. A drive gear is fixedly installed on the output end of the reduction gearbox. A gear ring is fixedly installed on the surface of the rotary kiln cylinder, and the drive gear meshes with the gear ring.

[0007] The feeding assembly includes a storage bin located on one side of the rotary kiln shell. A discharge pipe is connected to the bottom of the storage bin. A screw feeder is installed at the bottom of the discharge pipe. A feeding pipe is connected to the bottom of one end of the screw feeder. A Roots blower is connected to one end of the feeding pipe. The other end of the feeding pipe extends into the interior of the rotary kiln shell.

[0008] As a preferred embodiment of this utility model: a support frame is installed on the top of the storage silo, a rotating motor is installed at one end of the top of the support frame, a drive pulley is fixedly installed at the output end of the rotating motor, a stirring rod is rotatably installed at the other end of the support frame, the stirring rod is installed inside the storage silo, a driven pulley is fixedly installed at the top of the stirring rod, and the drive pulley and the driven pulley are connected by a transmission belt.

[0009] As a preferred embodiment of this utility model: multiple bearing seats are fixedly installed on both sides of the surface of the base, a support roller is rotatably installed on the top of the bearing seat, and multiple rolling rings are installed on the surface of the rotary kiln body, and the rolling rings are rolled on the surface of the support roller.

[0010] As a preferred embodiment of this utility model, an electromagnetic valve is also provided at the connection between the screw feeder and the feeding pipe.

[0011] As a preferred embodiment of this utility model: a protective cover is installed on the top of the support frame, and the protective cover covers the top of the driving pulley and the driven pulley.

[0012] As a preferred embodiment of this utility model, an exhaust pipe is fixedly installed at the top of the smoke chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) A storage bin is provided on one side of the rotary kiln shell. The bottom of the storage bin is connected to a feed pipe. The denitrifying agent inside the storage bin falls into the screw feeder through the feed pipe. The screw feeder works to feed the denitrifying agent into the feed pipe. The Roots blower works to blow the denitrifying agent into the rotary kiln shell, so that the denitrifying agent comes into full contact with the nitrogen oxides inside the rotary kiln, thereby improving the denitrification effect. The feeding structure replaces the manual feeding method. A solenoid valve is provided at the connection between the screw feeder and the feed pipe to facilitate automatic control of the feeding of the denitrifying agent.

[0015] (2) A rotary kiln body is provided on the top of the base. The feed port at the front end of the rotary kiln body facilitates feeding. The tail end of the rotary kiln body extends into the smoke chamber. When the drive motor on the top of the support rotates, it reduces the speed and increases the torque through the reduction gearbox, which drives the drive gear to rotate. The drive gear meshes with the gear ring on the surface of the rotary kiln body, thereby driving the rotary kiln body to rotate, which facilitates the firing and processing of materials. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rotary kiln assembly structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the feeding assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the stirring rod of this utility model.

[0020] In the diagram: 1. Base; 2. Support; 3. Smoke chamber; 4. Rotary kiln assembly; 41. Rotary kiln cylinder; 42. Feed inlet; 43. Drive motor; 44. Reduction gearbox; 45. Drive gear; 46. Gear ring; 5. Feeding assembly; 51. Storage silo; 52. Discharge pipe; 53. Screw feeder; 54. Feeding pipe; 55. Roots blower; 6. Support frame; 7. Rotary motor; 8. Drive pulley; 9. Agitator rod; 10. Driven pulley; 11. Transmission belt; 12. Bearing housing; 13. Support roller; 14. Roller ring; 15. Solenoid valve; 16. Protective cover; 17. Discharge pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Please see Figures 1-4 A dry denitrification device for a cement rotary kiln includes: a base 1, a rotary kiln assembly 4, and a feeding assembly 5; a support 2 is installed in the middle of one side of the base 1, and a smoke chamber 3 is installed at one end of the base 1.

[0023] Please see Figure 1 , Figure 2 The rotary kiln assembly 4 includes a rotary kiln cylinder 41 disposed on the top of the base 1. The front end of the rotary kiln cylinder 41 is provided with a feed port 42, and the rear end of the rotary kiln cylinder 41 extends into the smoke chamber 3. A drive motor 43 is fixedly installed on the top of the support 2. A reduction gearbox 44 is fixedly installed on the output end of the drive motor 43. A drive gear 45 is fixedly installed on the output end of the reduction gearbox 44. A gear ring 46 is fixedly installed on the surface of the rotary kiln cylinder 41. The drive gear 45 meshes with the gear ring 46.

[0024] In practical use: A rotary kiln body 41 is provided on the top of the base 1. The feed port 42 at the front end of the rotary kiln body 41 facilitates feeding. The tail end of the rotary kiln body 41 extends into the smoke chamber 3. When the drive motor 43 on the top of the support 2 rotates, it reduces the speed and increases the torque through the reduction gear box 44, which drives the drive gear 45 to rotate. The drive gear 45 meshes with the gear ring 46 on the surface of the rotary kiln body 41, thereby driving the rotary kiln body 41 to rotate, which facilitates the firing and processing of materials.

[0025] Please see Figure 1 , Figure 3 The feeding assembly 5 includes a storage bin 51 located on one side of the rotary kiln body 41. The bottom of the storage bin 51 is connected to a discharge pipe 52. A screw feeder 53 is installed at the bottom of the discharge pipe 52. One end of the screw feeder 53 is connected to a feeding pipe 54. One end of the feeding pipe 54 is connected to a Roots blower 55. The other end of the feeding pipe 54 extends into the interior of the rotary kiln body 41. A solenoid valve 15 is also provided at the connection between the screw feeder 53 and the feeding pipe 54.

[0026] In practical use: A storage bin 51 is provided on one side of the rotary kiln shell 41. The bottom of the storage bin 51 is connected to a feed pipe 52. The denitrifying agent inside the storage bin 51 falls into the screw feeder 53 through the feed pipe 52. The screw feeder 53 works to send the denitrifying agent into the feed pipe 54. The Roots blower 55 works to blow the denitrifying agent into the rotary kiln shell 41, so that the denitrifying agent comes into full contact with the nitrogen oxides inside the rotary kiln, thereby improving the denitrification effect. The feeding structure replaces the manual feeding method. A solenoid valve 15 is provided at the connection between the screw feeder 53 and the feed pipe 54 to facilitate automatic control of the denitrifying agent feeding.

[0027] Please see Figure 4 A support frame 6 is installed on the top of the storage silo 51. A rotary motor 7 is installed at one end of the top of the support frame 6. A drive pulley 8 is fixedly installed at the output end of the rotary motor 7. A stirring rod 9 is rotatably installed at the other end of the support frame 6. The stirring rod 9 is installed inside the storage silo 51. A driven pulley 10 is fixedly installed at the top of the stirring rod 9. The drive pulley 8 and the driven pulley 10 are connected by a transmission belt 11.

[0028] In practical use: A support frame 6 is installed on the top of the storage silo 51. A rotary motor 7 is installed at one end of the top of the support frame 6. A drive pulley 8 is installed at the output end of the rotary motor 7. The drive pulley 8 drives the driven pulley 10 to rotate through the transmission belt 11. The driven pulley 10 drives the stirring rod 9 to rotate inside the storage silo 51, thereby stirring the denitrification agent inside the storage silo 51 and preventing the material from clumping and sticking to the inner wall of the silo, which would affect the feeding.

[0029] Please see Figure 2Multiple bearing seats 12 are fixedly installed on both sides of the surface of the base 1. A support roller 13 is rotatably installed on the top of the bearing seat 12. Multiple rolling rings 14 are installed on the surface of the rotary kiln cylinder 41. The rolling rings 14 are rolled on the surface of the support roller 13.

[0030] In practical use: when the rotary kiln body 41 rotates under the drive of the gear ring 46, the rolling ring 14 on the surface of the rotary kiln body 41 rotates on the surface of the support roller 13 at the top of the bearing seat 12, thereby ensuring the stable rotation of the rotary kiln body 41.

[0031] Please see Figure 4 A protective cover 16 is installed on the top of the support frame 6, and the protective cover 16 covers the top of the driving pulley 8 and the driven pulley 10.

[0032] In practical use: The top of the support frame 6 is equipped with a protective cover 16, which covers the top of the driving pulley 8 and the driven pulley 10 to provide protection.

[0033] Please see Figure 1 An exhaust pipe 17 is fixedly installed at the top of the smoke chamber 3.

[0034] In practical use: the exhaust pipe 17 installed at the top of the smoke chamber 3 facilitates the discharge of flue gas from inside the rotary kiln cylinder 41.

[0035] A storage bin 51 is provided on one side of the rotary kiln shell 41. The bottom of the storage bin 51 is connected to a feed pipe 52. The denitrifying agent inside the storage bin 51 falls into the screw feeder 53 through the feed pipe 52. The screw feeder 53 operates to send the denitrifying agent into the feed pipe 54. The Roots blower 55 operates to blow the denitrifying agent into the rotary kiln shell 41, so that the denitrifying agent comes into full contact with the nitrogen oxides inside the rotary kiln, thereby improving the denitrification effect. The feeding structure replaces the manual feeding method. A solenoid valve 15 is provided at the connection between the screw feeder 53 and the feed pipe 54 to facilitate automatic control of the denitrifying agent feeding.

[0036] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dry denitrification equipment for a cement rotary kiln, characterized in that, include: A base (1) is provided with a support (2) installed in the middle of one side of the base (1) and a smoke chamber (3) is installed at one end of the base (1). A rotary kiln assembly (4) includes a rotary kiln cylinder (41) set on top of a base (1). The front end of the rotary kiln cylinder (41) is provided with a feed inlet (42). The rear end of the rotary kiln cylinder (41) extends into the smoke chamber (3). A drive motor (43) is fixedly installed on the top of the support (2). A reduction gearbox (44) is fixedly installed on the output end of the drive motor (43). A drive gear (45) is fixedly installed on the output end of the reduction gearbox (44). A gear ring (46) is fixedly installed on the surface of the rotary kiln cylinder (41). The drive gear (45) meshes with the gear ring (46). The feeding assembly (5) includes a storage bin (51) disposed on one side of the rotary kiln body (41). The bottom of the storage bin (51) is connected to a discharge pipe (52). A screw feeder (53) is installed at the bottom of the discharge pipe (52). One end of the screw feeder (53) is connected to a feeding pipe (54). One end of the feeding pipe (54) is connected to a Roots blower (55). The other end of the feeding pipe (54) extends into the interior of the rotary kiln body (41).

2. The dry denitrification equipment for a cement rotary kiln according to claim 1, characterized in that: A support frame (6) is installed on the top of the storage silo (51). A rotating motor (7) is installed at one end of the top of the support frame (6). A drive pulley (8) is fixedly installed at the output end of the rotating motor (7). A stirring rod (9) is rotatably installed at the other end of the support frame (6). The stirring rod (9) is installed inside the storage silo (51). A driven pulley (10) is fixedly installed at the top of the stirring rod (9). The drive pulley (8) and the driven pulley (10) are connected by a transmission belt (11).

3. The dry denitrification equipment for a cement rotary kiln according to claim 1, characterized in that: Multiple bearing seats (12) are fixedly installed on both sides of the surface of the base (1). A support roller (13) is rotatably installed on the top of the bearing seat (12). Multiple rolling rings (14) are installed on the surface of the rotary kiln cylinder (41). The rolling rings (14) are rolled on the surface of the support roller (13).

4. The dry denitrification equipment for a cement rotary kiln according to claim 1, characterized in that: A solenoid valve (15) is also provided at the connection between the screw feeder (53) and the feeding pipe (54).

5. The dry denitrification equipment for a cement rotary kiln according to claim 2, characterized in that: The top of the support frame (6) is equipped with a protective cover (16), which covers the top of the driving pulley (8) and the driven pulley (10).

6. The dry denitrification equipment for a cement rotary kiln according to claim 1, characterized in that: An exhaust pipe (17) is fixedly installed at the top of the smoke chamber (3).

Images