CN212584973U

CN212584973U - Cement kiln SCR denitration high-efficiency soot blowing system

Info

Publication number: CN212584973U
Application number: CN202021926548.6U
Authority: CN
Inventors: 张志刚; 王彬; 郑美玲; 何义斌; 刘松
Original assignee: Ctiec Environmental Protection Research Institute Jiangsu Co ltd
Current assignee: Ctiec Environmental Protection Research Institute Jiangsu Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-02-23
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses a high-efficient soot blowing system of cement kiln SCR denitration, including setting gradually the air compressor on the trunk line, surge tank and filter, end at the trunk line is provided with vertical pipe, be provided with a plurality of branch pipe on the vertical pipe, the solenoid valve has set gradually on the branch pipe, shock wave generator and soot blower, be provided with the pressure-increasing valve on the pipeline between air compressor and surge tank, be provided with the check valve on the pipeline between surge tank and filter, this soot blowing system still includes the controller, through operation control air compressor on the controller, the surge tank, the solenoid valve, shock wave generator, pressure-increasing valve and soot blower action. The utility model provides a soot blowing system can effectual improvement blow grey efficiency and blow grey effect, and can effectual increase of service life.

Description

Cement kiln SCR denitration high-efficiency soot blowing system

Technical Field

The utility model relates to a high-efficient soot blowing system of cement kiln SCR denitration belongs to soot blowing system technical field.

Background

At present, a Selective Catalytic Reduction (SCR) denitration technology is commonly adopted in kiln treatment in the cement kiln industry, is the denitration technology with highest denitration efficiency and the greatest market prospect, and has become the denitration technology for efficiently controlling NO in various industries at home and even internationally_XThe primary choice of discharge. The catalyst is used as a core material of the SCR denitration technology and becomes a direct factor for restricting catalytic reaction. However, when flue gas containing high-concentration and high-viscosity dust passes through the catalyst, it is very easy to agglomerate on the surface thereof, forming bridges and blockages, thereby causing catalyst poisoning, greatly reducing denitration efficiency. For preventing the catalyst layer deposition ash, improve denitration efficiency, need set up soot blower above every layer of catalyst, but current soot blower, the structure is complicated, and soot blowing efficiency and effect are relatively poor, need frequent to blow the ash to the kiln and handle for the old speed of system.

Disclosure of Invention

For solving prior art's not enough, the utility model provides a high-efficient soot blowing system of cement kiln SCR denitration can effectual improvement blow grey efficiency and blow grey effect, and can effectual extending system's life.

The utility model discloses the technical scheme who adopts does:

the cement kiln SCR denitration high-efficiency soot blowing system comprises an air compressor, a pressure regulating tank and a filter which are sequentially arranged on a main pipeline, wherein a vertical pipe is arranged at the tail end of the main pipeline, a plurality of branch pipes are arranged on the vertical pipe, an electromagnetic valve, a shock wave generator and a soot blowing head are sequentially arranged on the branch pipes, the soot blowing head comprises a barrel body with a conical structure at the top end, a partition plate is arranged in the barrel body, an electromagnet is fixedly arranged inside the bottom end of the barrel body, a spiral rail is arranged on the inner wall of the barrel body between the partition plate and the electromagnet, a magnet is also slidably arranged between the partition plate and the electromagnet, a sliding ball is fixedly arranged at the top of the magnet, the ball body of the sliding ball is positioned in the spiral rail, a fixed rod which is inserted and extends to the other side of the partition plate is arranged on one side, still be provided with the jet-propelled pipe in fixed disk barrel one side towards the toper end, the jet-propelled pipe erects on the fixed disk through a plurality of connecting rod, and the jet-propelled pipe extends to the barrel outside of toper end and has seted up a plurality of fumarole on the terminal body of jet-propelled pipe, is close to the fixed disk and is provided with the mouth of pipe of admitting air at the top of barrel between the barrel of fixed disk and toper end, the mouth of pipe of admitting air and shock generator pipeline intercommunication.

Preferably, a pressure increasing valve is further provided on the pipe between the air compressor and the pressure regulating tank.

Further preferably, a check valve is further provided in the pipe between the surge tank and the filter.

Further preferably, the air conditioner further comprises a controller, and the controller controls the air compressor, the pressure regulating tank, the electromagnetic valve, the shock generator, the electromagnet and the booster valve to operate.

Further preferably, an air pressure sensor corresponding to the air inlet pipe orifice is provided at the bottom of the cylinder.

Further preferably, a sealing block is arranged in the conical structure end of the cylinder body.

Further preferably, the diameter of the fixed disk is larger than that of the fixed rod.

Further preferably, the joint of the fixing rod and the partition plate is mechanically sealed.

Further preferably, a second elastic member is further provided between the electromagnet and the magnet.

Further preferably, a heating coil is further arranged outside the pressure regulating tank, a temperature sensor is further arranged in the pressure regulating tank, and the temperature sensor transmits the detected temperature value to the controller for displaying.

The beneficial effects of the utility model reside in that:

the compressed air generates shock waves through the shock wave generator, the telescopic rotatable soot blowing head is adopted to blow soot on a pipeline in the kiln, soot at a dead angle position and coking on the pipeline can be effectively removed, the gas consumption is low, the safety performance is high, the system is designed in a pure starting mode, the working stability is high, and the service life of the system is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a sootblowing head;

FIG. 3 is a cross-sectional view of an arc rail end cylinder;

the main reference numerals in the figures have the following meanings:

1. the device comprises a main pipeline, 2, an air compressor, 3, a pressure regulating tank, 4, a filter, 5, a vertical pipe, 6, a branch pipe, 7, an electromagnetic valve, 8, a shock wave generator, 9, a soot blowing head, 10, a cylinder, 11, a partition plate, 12, an electromagnet, 13, a spiral track, 14, a magnet, 15, a sliding bead, 16, a fixing rod, 17, a fixing disk, 18, an air jet pipe, 19, a connecting rod, 20, an air inlet pipe orifice, 21, a pressure increasing valve, 22, a one-way valve, 23, a controller, 24, an air pressure sensor, 25, a sealing block, 26, an elastic part I, 27, an elastic part II, 28, a heating coil, 29 and a temperature sensor.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1-3: the embodiment is a cement kiln SCR denitration high-efficiency soot blowing system, which comprises an air compressor 2, a pressure regulating tank 3 and a filter 4 which are sequentially arranged on a main pipeline 1, a vertical pipe 5 is arranged at the tail end of the main pipeline 1, a plurality of branch pipes 6 are arranged on the vertical pipe 5, an electromagnetic valve 7, a shock wave generator 8 and a soot blowing head 9 are sequentially arranged on the branch pipe 6, the soot blowing head 9 comprises a cylinder body 10 with the top end in a conical structure, a partition plate 11 is arranged in the cylinder body 10, an electromagnet 12 is fixedly arranged in the bottom end of the cylinder body 10, a spiral track 13 is arranged on the inner wall of the cylinder body 10 between the partition plate 11 and the electromagnet 12, a magnet 14 is arranged between the partition board 11 and the electromagnet 12 in a sliding way, the side of the magnet 14 facing the electromagnet 12 has the same magnetism as the side of the electromagnet 12 facing the magnet 14 after being electrified, a plurality of pressure relief holes are also formed in the cylinder 10 between the partition plate 11 and the electromagnet 12; the fixed smooth pearl 15 that is provided with in top of magnet 14, and the pearl body of smooth pearl 15 is located helical track 13, be provided with the dead lever 16 that alternates and extend to baffle 11 opposite side in one side of magnet 14 towards baffle 11, the end of dead lever 16 is provided with fixed disk 17, the cover is equipped with elastic component 26 on the dead lever 16 that lies in between baffle 11 and magnet 14, still be provided with jet-propelled pipe 18 in fixed disk 17 towards the barrel 10 one side of cone end, jet-propelled pipe 18 erects on fixed disk 17 through a plurality of connecting rod 19, and jet-propelled pipe 18 extends to the barrel 10 outside of cone end and seted up a plurality of fumarole on the terminal body of jet-propelled pipe 18, be close to fixed disk 17 and be provided with inlet nozzle 20 at the top of barrel 10 between fixed disk 17 and the barrel 10 of cone end, inlet nozzle 20 and laser generator 8 pipeline intercommunication.

Referring to fig. 1, a pressure increasing valve 21 is further provided in the pipe between the air compressor 2 and the pressure regulating tank 3, a check valve 22 is further provided in the pipe between the pressure regulating tank 3 and the filter 4, and the system further includes a controller 23 for controlling the operation of the air compressor 2, the pressure regulating tank 3, the solenoid valve 7, the laser generator 8, the electromagnet 12, and the pressure increasing valve 21 by operating the controller 23.

Referring to fig. 2, an air pressure sensor 24 corresponding to the air inlet nozzle 20 is provided at the bottom of the cylinder 10.

Referring to fig. 2, a sealing block 25 is provided within the tapered end of the cartridge 10.

Referring to fig. 2, the diameter of the fixing plate 17 is larger than that of the fixing rod 16, and the connection between the fixing rod 16 and the partition plate 11 is mechanically sealed.

Referring to fig. 2, a second elastic member 27 is further disposed between the electromagnet 12 and the magnet 14; in practical application, the elasticity of the second elastic element 27 is smaller than that of the first elastic element 26.

Referring to fig. 2, a heating coil 28 is further disposed outside the surge tank 3, a temperature sensor 29 is further disposed inside the surge tank 3, and the temperature sensor 29 transmits the detected temperature value to the controller 23 for display.

In practical application, the air is compressed by the air compressor 2, then sequentially subjected to pressure regulation by the pressure increasing valve 21 and the pressure regulating tank 3, preheated by the heating coil 28 on the pressure regulating tank 3, then subjected to the one-way valve 22 and the filter 4, and then enters each branch pipe 6, generates pulse airflow waves under the action of the shock generator 8 on each branch pipe 6, and then acts on a pipeline in the kiln through the jet hole on the jet pipe 18 of the soot blowing head 9; in actual operation, the soot blowing head 9 is fixed on the outer side wall of the kiln, and the gas injection pipe 18 is in sealed rotary connection with the kiln and extends into the kiln; after the pulse airflow wave sweeps the inner pipeline of the kiln for a certain time, the electromagnet 12 is electrified through the controller 23, the magnetism generated by one side, facing the magnet 14, of the electromagnet 12 after the electromagnet 12 is electrified is the same as the magnetism generated by one side, facing the electromagnet 12, of the magnet 14, so that a repulsive force is generated, the magnet 14 moves towards the partition plate 11, and due to the existence of the spiral rail 13, the sliding bead 15 at the top of the magnet 14 rotates along the spiral rail 13 to drive the magnet 14 to rotate, so that the fixed rod 16 and the air injection pipe 18 are driven to rotate and move forwards to sweep the inner pipeline of the kiln through the pulse airflow wave; the controller 23 can adjust the magnetic strength of the electromagnet 12 by changing the current passing through the electromagnet 12, so that the production requirement can be completely met; when the gas ejector pipe 18 needs to be recovered, the controller 23 continuously reduces the current led into the electromagnet 12, and then the resilience force of the first elastic part 26 acts on the magnet 14, so that the magnet 14 drives the gas ejector pipe 18 to rotate and retreat at the same time, and the soot blowing requirement is met.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. High-efficient soot blowing system of cement kiln SCR denitration, its characterized in that: comprises an air compressor (2), a pressure regulating tank (3) and a filter (4) which are sequentially arranged on a main pipeline (1), wherein a vertical pipe (5) is arranged at the tail end of the main pipeline (1), a plurality of branch pipes (6) are arranged on the vertical pipe (5), an electromagnetic valve (7), a shock wave generator (8) and a dust blowing head (9) are sequentially arranged on the branch pipes (6), the dust blowing head (9) comprises a barrel body (10) with a conical structure at the top end, a partition plate (11) is arranged in the barrel body (10), an electromagnet (12) is fixedly arranged in the bottom end of the barrel body (10), a spiral rail (13) is arranged on the inner wall of the barrel body (10) between the partition plate (11) and the electromagnet (12), a magnet (14) is also arranged between the partition plate (11) and the electromagnet (12) in a sliding manner, a sliding bead (15) is fixedly, and the bead body of the sliding bead (15) is positioned in the spiral track (13), a fixing rod (16) which is inserted and extended to the other side of the clapboard (11) is arranged on one side of the magnet (14) facing to the clapboard (11), a fixing disc (17) is arranged at the tail end of the fixing rod (16), an elastic part I (26) is sleeved on the fixing rod (16) positioned between the clapboard (11) and the magnet (14), an air injection pipe (18) is also arranged on one side of the fixed disc (17) facing to the barrel body (10) with a conical end, the air injection pipe (18) is erected on the fixed disc (17) through a plurality of connecting rods (19), the air injection pipe (18) is extended to the outside of the barrel body (10) with the conical end and is provided with a plurality of air injection holes on the tube body at the tail end of the air injection pipe (18), an air inlet pipe orifice (20) is arranged at the top of the barrel body (10) close to the fixed disc (, the air inlet pipe orifice (20) is communicated with a pipeline of the shock wave generator (8).

2. The cement kiln SCR denitration high-efficiency soot blowing system as defined in claim 1, wherein a pressure increasing valve (21) is further arranged on a pipeline between the air compressor (2) and the pressure regulating tank (3).

3. The cement kiln SCR denitration high-efficiency soot blowing system as set forth in claim 1, wherein a one-way valve (22) is further arranged on a pipeline between the pressure regulating tank (3) and the filter (4).

4. The cement kiln SCR denitration efficient soot blowing system according to claim 2, further comprising a controller (23), wherein the controller (23) is operated to control the air compressor (2), the pressure regulating tank (3), the electromagnetic valve (7), the shock wave generator (8), the electromagnet (12) and the booster valve (21) to operate.

5. The cement kiln SCR denitration high-efficiency soot blowing system according to claim 1, wherein an air pressure sensor (24) corresponding to the air inlet pipe orifice (20) is arranged at the bottom of the cylinder body (10).

6. The cement kiln SCR denitration efficient soot blowing system according to the claim 1, wherein a sealing block (25) is arranged in the conical structure end of the cylinder (10).

7. The cement kiln SCR denitration efficient soot blowing system as claimed in claim 1, wherein the diameter of the fixed disc (17) is larger than that of the fixed rod (16).

8. The cement kiln SCR denitration efficient soot blowing system as set forth in claim 1, wherein the joints of the fixing rods (16) and the partition plates (11) are mechanically sealed.

9. The cement kiln SCR denitration efficient soot blowing system as claimed in claim 1, wherein an elastic member II (27) is further arranged between the electromagnet (12) and the magnet (14).

10. The cement kiln SCR denitration high-efficiency soot blowing system according to claim 4, characterized in that a heating coil (28) is further arranged outside the pressure regulating tank (3), a temperature sensor (29) is further arranged in the pressure regulating tank (3), and the temperature sensor (29) transmits the detected temperature value to the controller (23) for display.