CN112683047A

CN112683047A - Method for cleaning blockage of shaft furnace burner

Info

Publication number: CN112683047A
Application number: CN202110073444.8A
Authority: CN
Inventors: 张国华; 胡兵武; 李艳华; 孔东亮; 苗金华
Original assignee: Wuan Yuhua Iron And Steel Co ltd
Current assignee: Wuan Yuhua Iron And Steel Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-04-20
Anticipated expiration: 2041-01-20
Also published as: CN112683047B

Abstract

The invention relates to the technical field of cleaning of a burner of a shaft furnace, in particular to a method for cleaning a burner of the shaft furnace, which comprises the burner, a flame tube, an installation tube and an air supply tube, wherein the flame tube is connected with the installation tube, the air supply tube is connected with the installation tube and is communicated with the flame tube through the installation tube, a round fin is connected in the flame tube, a plurality of ear shields matched with the round fin are fixedly connected outside the flame tube, elastic springs are fixedly connected between the ear shields and the round fin, the burner is connected with the round fin, an ash striking mechanism is installed in the installation tube, a buffering ash receiving mechanism is installed on the installation tube, a combustion-supporting air pipeline and a gas pipe are communicated on the air supply tube, a combustion-supporting air gate valve and a gas gate valve are respectively installed on the combustion-supporting air pipeline and the gas pipe, the cleaning is more convenient, the cleaning time is less, the adhesion of impurities of the burner is less, the, meanwhile, large-size impurities in the coal gas are easy to discharge, and the coal gas is good in use cleanness and practical.

Description

Method for cleaning blockage of shaft furnace burner

Technical Field

The invention relates to the technical field of cleaning of shaft furnace burners, in particular to a method for cleaning blockage of a shaft furnace burner.

Background

As is known, in the production of a shaft furnace, coal gas is used for being mixed with high-pressure combustion-supporting air to be combusted in a combustion chamber through a vortex annular seam type burner to heat and roast pellets, the coal gas inevitably carries impurities, steam, gasified hydrocarbon and other impurities, the condensed water is conveyed and cooled through a coal gas pipeline, the condensed water with the impurities flows into the combustion chamber along the burner to be heated and evaporated, and part of the impurities are adhered to the annular seam due to the small size of the annular seam of the burner, and are easily accumulated for a long time to form scale so as to block the annular seam, so that the gas quantity and the combustion-supporting air quantity are reduced, even the air-coal ratio is disordered, and the yield and the quality of the pellets are seriously influenced.

The traditional cleaning method is to shut down the furnace to put out a fire, remove the burner after the shaft furnace cools, reinstall the burner after the tool cleans, the cleaning is 3 hours or more at the fastest time, 4 burners need 8 maintenance workers and 8 post workers to process simultaneously, through analysis and demonstration, moisture and volatile impurities in the coal gas can not be stopped, the shaft furnace is at the end of the coal gas pipe network, the temperature of the coal gas is low, the current situation that the moisture of the coal gas is large is not easy to change, and only one cleaning method with short processing time can be found to reduce the influence on the production of the shaft furnace.

However, the prior art scheme has the following defects that the cleaning time is long, the cleaning workload is large, the labor consumption is high, the collision and damage of the burner are easily caused in the cleaning process, and the practicability is poor.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a method for cleaning a shaft furnace burner blockage, which is convenient to clean, less in cleaning time, less in burner adhesion impurities, not easy to block, stable to use, better in use cleanness and more practical, and large-size impurities in coal gas are easily discharged.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a cleaning method for blocking up a shaft furnace burner is realized based on a shaft furnace burner device and comprises a burner, a flame tube, an installation cylinder and an air supply cylinder, wherein the flame tube is connected with the installation cylinder, the air supply cylinder is communicated with the flame tube through the installation cylinder, a round fin is connected in the flame tube, a plurality of earmuffs matched with the round fin are fixedly connected outside the flame tube, elastic springs are fixedly connected between the earmuffs and the round fin, the burner is connected with the round fin, an ash striking mechanism is installed in the installation cylinder, a buffering ash receiving mechanism is installed on the installation cylinder, a combustion-supporting air pipeline and a gas pipe are communicated on the air supply cylinder, a combustion-supporting air gate valve and a gas gate valve are respectively installed on the combustion-supporting air pipeline and the gas pipe, the ash striking mechanism comprises a cone-shaped wheel ring and a fixing frame, the utility model discloses a dustproof installation device, including a conical pulley ring, installation barrel, fixedly connected with spring, conical pulley ring and installation barrel, the conical pulley ring rotates with the installation barrel to be connected, has seted up a plurality of vents in the conical pulley ring, fixedly connected with annular slope track on the conical pulley ring, mount and installation barrel fixed connection, sliding connection have in the mount hits the hammer, hit and beat fixedly connected with conical ring on the conical pulley ring, fixedly connected with on the conical pulley ring with annular slope track assorted driven lever, buffering connects grey mechanism including connecing grey ball cover and annular ash storage box, connect grey ball cover and nozzle fixed connection, annular ash storage box and installation barrel fixed connection, connect grey ball cover and installation barrel and all seted up spherical hole, two be connected with hemisphere ring and whole ball ring in the spherical hole respectively, hemisphere ring fixedly connected with leads the ash pipe, lead the ash pipe with whole ball ring sliding connection.

Preferably, the top end of the striking hammer is fixedly connected with a conical cap, and the bottom end of the striking hammer is provided with a spherical groove.

Preferably, the bottom end of the round fin is provided with an annular groove, the annular groove is internally provided with a plurality of circular holes, the circular holes are internally provided with hexagon socket head bolts, and the hexagon socket head bolts are in threaded connection with the burner.

Preferably, the bottom end of the round fin is fixedly connected with a round ring, and the round ring is in sliding connection with the flame tube.

Preferably, a plurality of vent holes are formed in the round fin.

Preferably, an arc-shaped door is arranged on the annular ash storage box.

Preferably, the arc door is fixedly connected with a push plate.

Preferably, the top end of the flame tube and the bottom end of the mounting tube are both fixedly connected with first flange plates, and the first flange plates are connected through a plurality of first bolts.

Preferably, the top end of the mounting cylinder and the bottom end of the air supply cylinder are both fixedly connected with second flange plates, and the two second flange plates are connected through a plurality of second bolts.

Preferably, the elastic spring is made of high-temperature resistant materials.

(III) advantageous effects

Compared with the prior art, the invention provides a method for cleaning blockage of a shaft furnace burner, which has the following beneficial effects:

1. according to the method for cleaning the blockage of the shaft furnace burner, the burner is convenient to clean through the application of the method for cleaning the blockage of the shaft furnace burner, the cleaning is simple and convenient, and the cleaning time is short.

2. This clearance method that shaft furnace nozzle blockked up through hitting the hammer and the cooperation that connects the mortar ball cover, the hitting of the nozzle of being convenient for is beaten vibrations to be convenient for reduce nozzle adhesion impurity, and then be convenient for avoid the nozzle to block up, through the cooperation of annular slope track and driven lever and the connection of mount, spring and cone pulley ring, be convenient for drive hits the hammer reciprocating motion, thereby be convenient for hit the nozzle repeatedly and beat comparatively practicality.

3. According to the method for cleaning the blockage of the shaft furnace burner, the cone-shaped wheel ring is connected with the mounting cylinder in a rotating mode, so that the rotation of the annular slope track is convenient to drive, the driving of a striking hammer is convenient, meanwhile, the collection of large-size impurities in coal gas is convenient, the guiding and the discharging of the impurities collected by the cone-shaped wheel ring are convenient through the connection of the semi-spherical ring, the whole spherical ring and the ash guide pipe, and the cleaning performance is good and practical.

Drawings

FIG. 1 is a schematic cross-sectional perspective view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B according to the present invention;

FIG. 4 is an enlarged partial view of FIG. 1 at C;

FIG. 5 is a schematic perspective view of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at D in accordance with the present invention;

FIG. 7 is a schematic rear bottom perspective view of the present invention;

fig. 8 is a partial enlarged structural view at E in fig. 7 according to the present invention.

In the figure: 1. burning a nozzle; 2. a flame tube; 3. mounting the cylinder; 4. an air supply cylinder; 5. a round fin; 6. ear muffs; 7. an elastic spring; 8. a combustion air duct; 9. a gas pipe; 10. a combustion-supporting air gate valve; 11. a gas gate valve; 12. a conical wheel ring; 13. a fixed mount; 14. an annular slope track; 15. striking a hammer; 16. a conical ring; 17. a spring; 18. a driven lever; 19. receiving a gray ball sleeve; 20. an annular ash storage box; 21. a hemispherical ring; 22. arranging a ball ring; 23. an ash guide pipe; 24. a conical cap; 25. a hexagon socket head cap screw; 26. a circular ring; 27. an arc-shaped door; 28. pushing the plate; 29. a first flange plate; 30. a first bolt; 31. a second flange plate; 32. and a second bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1-8, a method for cleaning a shaft furnace burner block is realized based on a shaft furnace burner block device, and comprises a burner 1, a flame tube 2, a mounting tube 3 and an air supply tube 4, wherein the flame tube 2 is connected with the mounting tube 3, the air supply tube 4 is communicated with the flame tube 2 through the mounting tube 3, a circular fin 5 is connected in the flame tube 2, a plurality of ear shields 6 matched with the circular fin 5 are fixedly connected outside the flame tube 2, elastic springs 7 are fixedly connected between the ear shields 6 and the circular fin 5, the burner 1 is connected with the circular fin 5, an ash striking mechanism is installed in the mounting tube 3, so that striking vibration of the burner 1 is facilitated, thereby facilitating reduction of adhesion of impurities on the burner 1 and further facilitating prevention of the burner 1 from being blocked, a buffering ash receiving mechanism is installed on the mounting tube 3, an air duct 8 and a combustion supporting pipe 9 are communicated with the air supply tube 4, the combustion-supporting air gate valve 10 and the gas gate valve 11 are respectively arranged on the combustion-supporting air pipeline 8 and the gas pipe 9, the ash striking mechanism comprises a conical wheel ring 12 and a fixing frame 13, the conical wheel ring 12 is rotatably connected with the mounting cylinder 3 and is convenient for driving the annular slope rail 14 to rotate, so that the driving of the striking hammer 15 is convenient, and the collection of large-size impurities in the gas is convenient, a plurality of ventilation openings are formed in the conical wheel ring 12, the annular slope rail 14 is fixedly connected to the conical wheel ring 12 and is convenient for driving the striking hammer 15 to reciprocate, so that the repeated striking of the burner 1 is convenient, the ash striking mechanism is practical, the fixing frame 13 is fixedly connected with the mounting cylinder 3, the striking hammer 15 is slidably connected to the fixing frame 13, the conical ring 16 is fixedly connected to the striking hammer 15, the spring 17 is fixedly connected between the conical ring 16 and the fixing frame 13, and is convenient for matching with the annular, thereby be convenient for hit repeatedly hitting of nozzle 1, it is comparatively practical, fixedly connected with and annular slope track 14 assorted driven lever 18 on the bell ring 16, the buffering connects grey mechanism including connecing grey ball cover 19 and annular ash storage box 20, connect grey ball cover 19 and nozzle 1 fixed connection, annular ash storage box 20 and installation section of thick bamboo 3 fixed connection, connect grey ball cover 19 and installation section of thick bamboo 3 and all seted up spherical hole, be connected with hemisphere ring 21 and whole sphere ring 22 in two spherical holes respectively, hemisphere ring 21 fixedly connected with leads ash pipe 23, it leads ash pipe 23 and whole sphere ring 22 sliding connection to lead ash pipe 23, be convenient for with the guide and the discharge of the impurity of cone pulley ring 12 collection, the clean nature of use is better, it is comparatively practical.

It should be further noted that the top end of the striking hammer 15 is fixedly connected with the conical cap 24, which is convenient for reducing the wind resistance of the striking hammer 15 and dissipating wind, and is more practical, the bottom end of the striking hammer 15 is provided with a spherical groove, which is convenient for pushing out impurities collected by the conical wheel ring 12, the bottom end of the circular fin 5 is provided with an annular groove, the annular groove is internally provided with a plurality of circular holes, the plurality of circular holes are internally provided with hexagon socket bolts 25, the plurality of hexagon socket bolts 25 are all in threaded connection with the burner 1, which is convenient for the installation, fixation and disassembly of the burner 1, the use is more flexible, the bottom end of the circular fin 5 is fixedly connected with the circular ring 26, the circular ring 26 is in sliding connection with the flame tube 2, which is convenient for improving the protection of the elastic spring 7, the protection effect is better, the circular fin 5 is provided with a plurality of ventilation holes, which is convenient for the ejection of coal gas, the annular, it is comparatively practical, fixedly connected with push pedal 28 on the arc door 27, be convenient for opening and closing of arc door 27, the first ring flange 29 of the equal fixedly connected with in bottom of the top of flame tube 2 and installation cylinder 3, two first ring flanges 29 are connected through a plurality of first bolts 30, be convenient for be connected and dismantle of flame tube 2 and installation cylinder 3, the equal fixedly connected with second ring flange 31 in bottom of the top of installation cylinder 3 and air feed cylinder 4, two second ring flanges 31 are connected through a plurality of second bolts 32, be convenient for be connected and dismantle of installation cylinder 3 and air feed cylinder 4, elasticity spring 7 adopts high temperature resistant material, be convenient for improve the service reliability under the 7 high temperature environment of elasticity spring.

In summary, the working principle and working process of the shaft furnace burner device are that, when in use, the shaft furnace burner device is firstly fixedly installed on a shaft furnace to be used, and a combustion-supporting air pipeline 8 and a gas pipe 9 are respectively communicated with external combustion-supporting air and gas, the gas and the combustion-supporting air are mixed in an air supply pipe and then enter a flame tube 2 through an installation tube 3 in the working process of the shaft furnace, and then pass through a burner 1 for combustion, when the mixture of the gas and the combustion-supporting air passes through the installation tube 3, the mixture passes through a cone wheel ring 12 to rotate under the action of gas pressure, so that the rotation of an annular slope track 14 is realized, further the driving of the striking hammer 15 is realized, the ejection of impurities collected by the cone wheel ring 12 is completed under the matching action of a spring 17, and the impact on a dust receiving ball sleeve 19 is realized, so that the vibration of the burner 1 relative to the flame tube 2 is realized, with the adhesion impurity on the nozzle 1 shake down, reduce the jam of nozzle 1, through the connection of springy spring 7, ear muff 6 and round fin 5, the buffering of the nozzle 1 of being convenient for after the impact force in-process and the impact force, nozzle 1 protectiveness is better, and the oscillation cycle is longer, and the practicality is better.

It should be further noted that the working principle and working process of the method for cleaning up the blockage of the shaft furnace burner are that the blockage on the burner 1 is impurities in the gas, the main components are hydrocarbons, carbon-containing dust and a small amount of alkali metal volatile matters, the impurities react with the oxygen at a high temperature of more than 500 ℃ to easily form smoke volatilization, the smoke volatilization is accumulated in the circumferential seam because the burner 1 is in a high-temperature environment of more than 800 ℃ in a combustion chamber, but the burner 1 is cooled because the burner 1 continuously sprays low-temperature gas and combustion-supporting air, so that the purpose of cleaning up the blockage can be achieved only by exposing the burner 1 in the high-temperature environment of more than 500 ℃ and oxidizing and volatilizing the blockage, the shaft furnace extinguishes the gas and the combustion-supporting air, the burner 1 is not cooled by the low-temperature gas and the combustion-supporting air, is exposed in the high-temperature environment, the gas supply is stopped, the gas gate valve 11 is closed, stop combustion-supporting air supply, adjust combustion-supporting air gate valve 10 to the third and open, so as to avoid in a large amount of high-temperature gas refluence income combustion-supporting air duct 8, thereby be convenient for avoid combustion-supporting air duct 8 to warp, and then be convenient for avoid causing equipment damage, make the cooling air flow back into nozzle 1 after the shaft furnace heating, then flow back into combustion-supporting air duct 8, discharge at last along combustion-supporting air duct 8, the cooling air of high temperature oxidizes the barrier when nozzle 1, make the gasification of oxidation barrier discharge, through about 10 minutes blowback, the barrier in nozzle 1 circumferential weld can decompose totally basically, reach predetermined effect, be convenient for clear up nozzle 1, it is comparatively simple convenient to clear up, it is less when the clearance is used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A method for cleaning a blockage of a burner of a shaft furnace is realized based on a burner device of the shaft furnace, comprises a burner (1) and is characterized in that: still include flame tube (2), installation cylinder (3) and air feed cylinder (4), flame tube (2) with installation cylinder (3) are connected, air feed cylinder (4) are connected with installation cylinder (3), and air feed cylinder (4) are through installation cylinder (3) and flame tube (2) intercommunication, and flame tube (2) in-connection has round fin (5), flame tube (2) outer fixedly connected with a plurality of with round fin (5) assorted earmuff (6), a plurality of equal fixedly connected with elastic spring (7) between earmuff (6) and round fin (5), nozzle (1) is connected with round fin (5), installs the ash striking mechanism in installation cylinder (3), installs the buffering on installation cylinder (3) and connects grey mechanism, and the intercommunication has combustion-supporting air pipeline (8) and gas pipe (9) on air feed cylinder (4), install combustion-supporting air gate valve (10) and gas gate valve (11) respectively on combustion-supporting air pipeline (8) and gas pipe (9), the ash striking mechanism comprises a conical wheel ring (12) and a fixing frame (13), the conical wheel ring (12) is rotatably connected with an installation cylinder (3), a plurality of ventilation openings are formed in the conical wheel ring (12), an annular slope track (14) is fixedly connected to the conical wheel ring (12), the fixing frame (13) is fixedly connected with the installation cylinder (3), a striking hammer (15) is slidably connected to the fixing frame (13), a conical ring (16) is fixedly connected to the striking hammer (15), a spring (17) is fixedly connected between the conical ring (16) and the fixing frame (13), a driven rod (18) matched with the annular slope track (14) is fixedly connected to the conical ring (16), the buffering ash receiving mechanism comprises an ash receiving ball sleeve (19) and an annular ash storage box (20), the ash receiving ball sleeve (19) is fixedly connected with the fixing frame (1), and the annular ash storage box (20) is fixedly connected with the burner nozzle, connect grey ball cover (19) and installation section of thick bamboo (3) and all seted up spherical hole, two spherical downthehole hemisphere ring (21) and whole ball ring (22) of being connected with respectively, hemisphere ring (21) fixedly connected with leads grey pipe (23), lead grey pipe (23) with whole ball ring (22) sliding connection.

2. A method for cleaning a blockage of a burner of a shaft furnace according to claim 1, characterized in that: the top end of the striking hammer (15) is fixedly connected with a conical cap (24), and the bottom end of the striking hammer (15) is provided with a spherical groove.

3. A method for cleaning a blockage of a burner of a shaft furnace according to claim 2, characterized in that: the bottom of round fin (5) has seted up the ring channel, it has a plurality of circular ports to open in the ring channel, and is a plurality of all be provided with hexagon socket head cap screw (25) in the circular port, it is a plurality of hexagon socket head cap screw (25) all with nozzle (1) threaded connection.

4. A method for cleaning a blockage of a burner of a shaft furnace according to claim 3, characterized in that: the bottom end of the round fin (5) is fixedly connected with a round ring (26), and the round ring (26) is connected with the flame tube (2) in a sliding mode.

5. A method for cleaning a blockage of a burner of a shaft furnace according to claim 4, characterized in that: and a plurality of vent holes are formed in the round fins (5).

6. A method for cleaning a blockage of a burner of a shaft furnace according to claim 5, characterized in that: an arc-shaped door (27) is arranged on the annular ash storage box (20).

7. A method for cleaning a blockage of a burner of a shaft furnace according to claim 6, characterized in that: the arc door (27) is fixedly connected with a push plate (28).

8. A method for cleaning a blockage of a burner of a shaft furnace according to claim 7, characterized in that: the top of flame tube (2) and the bottom of installation section of thick bamboo (3) all fixedly connected with first ring flange (29), two first ring flange (29) are connected through a plurality of first bolts (30).

9. A method for cleaning a blockage of a burner of a shaft furnace according to claim 8, characterized in that: the top of installation cylinder (3) and the bottom of air feed cylinder (4) all fixedly connected with second ring flange (31), two second ring flange (31) are connected through a plurality of second bolt (32).

10. A method for cleaning a blockage of a burner of a shaft furnace according to claim 9, characterized in that: the elastic spring (7) is made of high-temperature resistant materials.