CN215598095U

CN215598095U - Carbon monoxide waste gas circulation treatment system of sintering machine

Info

Publication number: CN215598095U
Application number: CN202122319402.6U
Authority: CN
Inventors: 程华; 赵德辉; 白贺文; 贾凤宝; 井日东
Original assignee: Hebei Huaxi Special Steel Co ltd
Current assignee: Hebei Huaxi Special Steel Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-01-21
Anticipated expiration: 2031-09-24

Abstract

The utility model relates to a carbon monoxide waste gas circulation treatment system of a sintering machine. The technical scheme is as follows: the device comprises a sintering machine, a flue device, an air box device, a sintering machine table top gas hood, an igniter, a circulating fan, a flue gas mixing chamber and an annular cooler; the sintering machine includes a support leg, the support leg is installed respectively pivot both ends around the sintering machine, the front side install between the support leg the flue device, the flue device includes flue A and flue B, set up between flue A, the flue B the bellows device, the top of support leg is fixed mounting petticoat pipe backing plate respectively, fixed surface installation on the petticoat pipe backing plate the sintering machine mesa petticoat pipe is around, the left end installation of petticoat pipe backing plate the point firearm, sintering machine mesa petticoat pipe upper surface sets up circulating fan, flue gas mixing chamber and ring cooling machine. The utility model has the beneficial effects that: the flue gas is recycled, the CO is cleared up at the source, and the environmental protection quality of the system is improved.

Description

Carbon monoxide waste gas circulation treatment system of sintering machine

Technical Field

The utility model belongs to the technical field of sintering machine equipment, and relates to a carbon monoxide waste gas circulation treatment system of a sintering machine.

Background

As a core link in the modern steel smelting process, sintering occupies an important position, and the sintering process has the function of solving the problem that mineral powder from mines cannot be directly fed into a furnace for ironmaking due to small granularity and poor air permeability, and the fact that blast furnace material selection and material collapse are easily caused. Through sintering, the mineral powder can be changed into sintering ore with larger granularity, porous structure and larger strength, so that the smooth operation of a blast furnace can be ensured, but along with the increase of environmental protection, the waste smoke treatment of the sintering machine is always the focus of attention, on one hand, the waste smoke treatment seriously affects the air environment, and on the other hand, the treatment of the waste smoke CO of the sintering machine also affects the overall production efficiency of the sintering machine.

At present, the CO treatment of the waste flue gas of the sintering machine in China generally adopts internal circulation or external circulation. The flue gas internal circulation generally adopts a single variable frequency circulating fan, the flue gas with high CO concentration is directly extracted from a wind box branch pipe, the fan type selection generally adopts full pressure 18000Pa, the power is not lower than 30% of the total air volume of 2 main exhaust fans, the extracted waste flue gas is directly circulated to the surface of a trolley through a multi-pipe dust remover to be combusted again, the total CO amount is reduced, and the method is characterized by large equipment investment and high operation cost; the flue gas extrinsic cycle generally adopts the waste flue gas after 2 main air exhauster exports mix directly to extract 20% -30% waste flue gas and gets into the platform truck surface and burn once more, reduces CO total amount, its characteristics be can't the high bellows branch pipe of targeted elimination CO content, can only eliminate the CO of flue gas total amount after the flue mixes, its actual operation effect is poor, can not follow the source and administer.

In view of the above problems, the utility model provides a carbon monoxide waste gas circulation treatment system for a sintering machine, which adopts a source treatment circulation mode, effectively reduces the content of CO in waste flue gas of the sintering machine, improves the environmental protection quality, and provides a new idea and a new method for flue gas treatment.

SUMMERY OF THE UTILITY MODEL

In view of the problems in the prior art, the utility model discloses a carbon monoxide waste gas circulation treatment system of a sintering machine, which adopts the technical scheme that the system comprises the sintering machine, a flue device, an air box device, a sintering machine table-board smoke hood, an igniter, a circulating fan, a smoke mixing chamber and an annular cooler; the sintering machine comprises support legs, the support legs are respectively installed at the front end and the rear end of a left rotating shaft and a right rotating shaft of the sintering machine, a flue device is installed between the support legs at the front side, the flue device comprises a flue A and a flue B, an air box device is arranged between the flue A and the flue B, a smoke hood base plate is respectively and fixedly installed at the top of the support legs at the front side and the top of the support legs at the rear side, the table top smoke hood of the sintering machine is fixedly installed on the upper surface of the smoke hood base plate, an igniter is fixedly installed at the left end of the smoke hood base plate at the front side and the rear side, the circulating fan, a smoke mixing chamber and a circular cooler are sequentially arranged on the upper surface of the table top smoke hood of the sintering machine from left to right, and the circulating fan, the smoke mixing chamber and the circular cooler are respectively communicated through pipelines; by adopting the double-flue design of the flue A and the flue B, the flue gas with high CO content generated by the sintering machine is pumped into the flue A and is dedusted by the electrostatic precipitator, the flue gas with high CO content after being dedusted by the electrostatic precipitator is discharged into a flue gas mixing chamber by a circulating fan through a pipeline through a first main exhaust fan, then matching with oxygen-containing air sucked from the outside by the circular cooler, mixing the oxygen-containing air with a flue gas mixing chamber, discharging CO flue gas mixed with cold air into a table top at the lower part of a smoke hood of the table top of the sintering machine together for secondary combustion, pumping the flue gas with low CO content into a flue B, and removing dust again by an electrostatic dust collector arranged in the flue B, and then the flue gas is extracted for the second time by a second main exhaust fan and is discharged by a smoke discharge pipe, and the CO content in the flue gas is fully combusted and digested at the source by recycling the flue gas generated by the sintering machine, so that the CO content in the flue gas is fundamentally treated.

As a preferred scheme of the utility model, the flue a further comprises a first main exhaust fan, the first main exhaust fan is mounted on the front side surface of the left end of the flue a, an exhaust port of the first main exhaust fan is communicated with an air inlet of the circulating fan through a pipeline, and an electrostatic dust collector is arranged in the flue a; flue gas that the sintering machine produced gets into in the flue A, removes dust through electrostatic precipitator, later, takes out it into the circulating fan through the first main air exhauster that sets up in, carries out the secondary cycle burning, and the particulate matter in the flue gas can effectively be reduced to the flue gas after the dust removal, prevents to block up pipeline and air exhauster.

As a preferred scheme of the utility model, the flue B further comprises a second main exhaust fan, the second main exhaust fan is mounted on the front side surface of the right end of the flue B, the side wall of the second main exhaust fan is communicated with a smoke exhaust pipe, and an electrostatic dust collector is arranged in the flue B; and mixing the flue gas subjected to dust removal by the flue A into cold air introduced by the circular cooler, re-entering the table top of the sintering machine table top smoke hood together, performing secondary combustion, fully digesting CO, then introducing the flue gas with low CO content into the flue B, performing dust removal again, and then discharging through desulfurization treatment.

As a preferable mode of the present invention, the bellows device includes 21 bellows, which are respectively numbered as bellows No. 1, bellows No. 2, bellows No. 3, bellows No. 4, bellows No. 5, bellows No. 6, bellows No. 7, bellows No. 8, bellows No. 9, bellows No. 10, bellows No. 11, bellows No. 12, bellows No. 13, bellows No. 14, bellows No. 15, bellows No. 16, bellows No. 17, bellows No. 18, bellows No. 19, bellows No. 20, bellows No. 21.

As a preferred scheme of the utility model, the No. 1 bellows, the No. 2 bellows and the No. 18 bellows are respectively communicated with the flue B through pipelines; the No. 18 air box is directly connected into the flue B and is used for balancing the temperature and the flow of the flue B.

As a preferable scheme of the utility model, the No. 3 bellows, the No. 4 bellows, the No. 5 bellows, the No. 9 bellows, the No. 10 bellows, the No. 11 bellows, the No. 12 bellows, the No. 13 bellows, the No. 14 bellows, the No. 15 bellows, the No. 16 bellows, the No. 17 bellows, the No. 19 bellows and the No. 20 bellows are respectively communicated with the flue A and the flue B through pipelines from top to bottom; design like this, can effectively balance the flue gas flow in flue A, the flue B, make first main air exhauster and second main air exhauster load balance, ensure safety, wherein, 9 # bellows divide into two way branch pipes, and one way inserts flue A through the governing valve, and another way inserts flue B through the governing valve, and the temperature, flow, the oxygen content of balanced flue A and flue B, 19 # bellows, 20 # bellows from top to bottom respectively with flue A, flue B pass through the pipeline intercommunication, be for balanced flue gas flow, temperature, make first main air exhauster, second main air exhauster and electrostatic precipitator temperature, load balance, satisfy production technology parameter requirement.

As a preferable scheme of the utility model, the No. 6 bellows, the No. 7 bellows, the No. 8 bellows and the No. 21 bellows are respectively communicated with the flue A through pipelines; the high-temperature high-oxygen-content No. 21 air box is directly connected into the flue A and is used for balancing the temperature, the flow and the oxygen content of the flue A.

The utility model has the beneficial effects that: by adopting the double-flue design of the flue A and the flue B, the flue gas with high CO content generated by the sintering machine is pumped into the flue A, is dedusted by the electrostatic precipitator, is discharged into the circulating fan through a pipeline by the first main exhaust fan, the circulating fan discharges the flue gas with high CO content dedusted by the electrostatic precipitator into the flue gas mixing chamber, is matched with oxygen-containing air sucked by the annular cooler from the outside, is mixed by the flue gas mixing chamber, and simultaneously discharges the CO flue gas mixed with cold air into the table top at the lower part of the table top smoke hood of the sintering machine for secondary combustion, the flue gas with low CO content is pumped into the flue B, is dedusted again by the electrostatic precipitator arranged in the flue B, is pumped for the second time by the second main exhaust fan, is discharged by the smoke exhaust pipe, and is recycled, the CO content in the flue gas is fully combusted and digested at the source, so that the CO content in the flue gas is fundamentally treated, the content of CO in the flue gas is effectively reduced, the environment-friendly quality is guaranteed, dynamic balance adjustment is carried out on the flue A and the flue B through the arrangement of the air boxes during ventilation, safe operation is guaranteed, and the CO eliminating efficiency is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a flue apparatus of the present invention;

FIG. 3 is a schematic view of a bellows apparatus of the present invention.

In the figure: 1-sintering machine, 2-flue device, 3-bellows device, 4-sintering machine table top hood, 5-igniter, 6-circulating fan, 7-flue gas mixing chamber, 8-circular cooler, 11-support leg, 12-rotating shaft, 13-hood pad, 21-flue A, 211-first main exhaust fan, 22-flue B, 221-second main exhaust fan, 222-smoke exhaust pipe, 301-1 bellows, 302-2 bellows, 303-3 bellows, 304-4 bellows, 305-5 bellows, 306-6 bellows, 307-7 bellows, 308-8 bellows, 309-9 bellows, 310-10 bellows, 311-11 bellows, 312-12 bellows, 313-13 bellows, bellows No. 314-14, bellows No. 315-15, bellows No. 316-16, bellows No. 317-17, bellows No. 318-18, bellows No. 319-19, bellows No. 320-20, and bellows No. 321-21.

Detailed Description

Example 1

As shown in fig. 1 to 3, the carbon monoxide waste gas circulation treatment system of the sintering machine adopts the technical scheme that the system comprises a sintering machine 1, a flue device 2, a bellows device 3, a sintering machine table top fume hood 4, an igniter 5, a circulating fan 6, a fume mixing chamber 7 and a circular cooler 8; the sintering machine 1 comprises support legs 11, the support legs 11 are respectively installed at the front end and the rear end of a left rotating shaft 12 and a right rotating shaft 12 of the sintering machine 1, smoke hood base plates 13 are respectively and fixedly installed at the tops of the support legs 11 and the tops of the support legs 11 on the front side, and the flue device 2 is installed between the support legs 11 on the front side.

The flue device 2 comprises a flue A21 and a flue B22, the flue A21 further comprises a first main exhaust fan 211, the first main exhaust fan 211 is installed on the front side surface of the left end of the flue A21, an exhaust port of the first main exhaust fan 211 is communicated with an air inlet of the circulating fan 6 through a pipeline, and an electrostatic dust collector is arranged inside the flue A21;

flue B22 still includes second main air exhauster 221, second main air exhauster 221 is installed the front side surface of flue B22 right-hand member, second main air exhauster 221 lateral wall intercommunication smoke exhaust pipe 222, flue B22 is inside to be provided with electrostatic precipitator.

The bellows device 3 is arranged between the flues A21 and B22, the bellows device 3 comprises 21 bellows, which are respectively numbered as bellows 1, bellows 2, bellows 303 3, bellows 304, bellows 305, bellows 306, bellows 7, bellows 307, bellows 8, bellows 308, bellows 9, bellows 310, bellows 11, bellows 311, bellows 312, bellows 313, bellows 314, bellows 315, bellows 316, bellows 317, bellows 318, bellows 319, bellows 20, bellows 321;

and the No. 1 wind box 301, the No. 2 wind box 302 and the No. 18 wind box 318 are respectively communicated with the flue B22 through pipelines.

The No. 3 bellows 303, the No. 4 bellows 304, the No. 5 bellows 305, the No. 9 bellows 309, the No. 10 bellows 310, the No. 11 bellows 311, the No. 12 bellows 312, the No. 13 bellows 313, the No. 14 bellows 314, the No. 15 bellows 315, the No. 16 bellows 316, the No. 17 bellows 317, the No. 19 bellows 319 and the No. 20 bellows 320 are respectively communicated with the flue A21 and the flue B22 through pipelines from top to bottom;

the No. 6 bellows 306, the No. 7 bellows 307, the No. 8 bellows 308 and the No. 21 bellows 321 are respectively communicated with the flue A21 through pipelines.

The upper surface of the smoke hood base plate 13 is fixedly provided with the sintering machine table top smoke hood 4.

And the igniter 5 is fixedly arranged at the left end of the front smoke hood backing plate 13 and the rear smoke hood backing plate 13.

The upper surface of the sintering machine table top gas hood 4 is sequentially provided with a circulating fan 6, a flue gas mixing chamber 7 and a circular cooler 8 from left to right, and the circulating fan 6, the flue gas mixing chamber 7 and the circular cooler 8 are respectively communicated through pipelines.

The working principle of the utility model is as follows: when the device is used, the mineral powder in the sintering machine 1 is ignited and combusted through the igniter 5, in the process, the circular cooler 8 is opened, air is injected into the smoke hood 4 of the table top of the sintering machine, meanwhile, the second main exhaust fan 221 is opened for exhausting air, so that the No. 1 wind box 301 and the No. 2 wind box 302 generate micro negative pressure, the ignition 5 is favorable for combustion, and blast furnace gas is saved, then the mineral powder in the sintering machine 1 is combusted, a large amount of CO-containing smoke is generated and enters the flue A21, after dust is removed through the built-in electrostatic dust remover, the first main exhaust fan 211 is opened for extraction, the dedusted large amount of CO-containing smoke is discharged into the circulating fan 6 through a pipeline, the circulating fan 6 discharges the smoke into the smoke mixing chamber 7, and then the sintering machine 8 discharges oxygen-containing air for mixing and combustion supporting, so that the large amount of CO-containing smoke is discharged into the table top at the lower part of the smoke hood 4 again for secondary combustion, and then the flue gas with lower CO content after being combusted again by the sintering machine 1 is discharged into a flue B22, after dust removal is carried out by a built-in electrostatic dust collector, the flue gas is extracted by a second main exhaust fan 221, and is desulfurized by a smoke discharge pipe 222 and then discharged to the outside, and in the whole working process, the No. 3 air box 303, the No. 4 air box 304, the No. 5 air box 305, the No. 9 air box 309, the No. 10 air box 310, the No. 11 air box 311, the No. 12 air box 312, the No. 13 air box 313, the No. 14 air box 314, the No. 15 air box 315, the No. 16 air box 316, the No. 17 air box 317, the No. 19 air box 319 and the No. 20 air box 320 are respectively communicated with the flue A21 and the flue B22 through pipelines, so that the flue gas flow in the flue A21 and the flue B22 can be effectively balanced, the load of the first main exhaust fan 211 and the second main exhaust fan 221 is balanced, and the safety is ensured.

Electrical connections or structures not described in detail herein are prior art.

Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims

1. The utility model provides a sintering machine carbon monoxide waste gas circulation processing system which characterized in that: comprises a sintering machine (1), a flue device (2), an air box device (3), a sintering machine table-board smoke hood (4), an igniter (5), a circulating fan (6), a flue gas mixing chamber (7) and a circular cooler (8); sintering machine (1) is including a support leg (11), install respectively support leg (11) both ends around pivot (12), the front side about sintering machine (1) install between support leg (11) flue device (2), flue device (2) are including flue A (21) and flue B (22), set up between flue A (21), flue B (22) bellows device (3), the front side the top and the rear side of support leg (11) the top of support leg (11) is fixed mounting petticoat pipe backing plate (13) respectively, fixed surface installs on petticoat pipe backing plate (13) sintering machine mesa petticoat pipe (4), front and back the left end fixed mounting of petticoat pipe backing plate (13) some firearm (5), sintering machine mesa petticoat pipe (4) upper surface sets gradually from left to right circulating fan (6), The circulating fan (6), the flue gas mixing chamber (7) and the circular cooler (8) are communicated with each other through pipelines.

2. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 1, characterized in that: flue A (21) still includes first main air exhauster (211), first main air exhauster (211) are installed the front side surface of flue A (21) left end, the gas vent of first main air exhauster (211) with circulating fan (6)'s air inlet passes through the pipeline intercommunication, flue A (21) inside is provided with electrostatic precipitator.

3. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 1, characterized in that: flue B (22) still includes second owner air exhauster (221), second owner air exhauster (221) are installed the front side surface of flue B (22) right-hand member, second owner air exhauster (221) lateral wall intercommunication smoke exhaust pipe (222), flue B (22) inside is provided with electrostatic precipitator.

4. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 1, characterized in that: the bellows device (3) comprises 21 bellows, which are numbered 1 bellows (301), 2 bellows (302), 3 bellows (303), 4 bellows (304), 5 bellows (305), 6 bellows (306), 7 bellows (307), 8 bellows (308), 9 bellows (309), 10 bellows (310), 11 bellows (311), 12 bellows (312), 13 bellows (313), 14 bellows (314), 15 bellows (315), 16 bellows (316), 17 bellows (317), 18 bellows (318), 19 bellows (319), 20 bellows (320) and 21 bellows (321).

5. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 4, characterized in that: no. 1 bellows (301), No. 2 bellows (302), No. 18 bellows (318) respectively with flue B (22) pass through the pipeline intercommunication.

6. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 4, characterized in that: no. 3 bellows (303), No. 4 bellows (304), No. 5 bellows (305), No. 9 bellows (309), No. 10 bellows (310), No. 11 bellows (311), No. 12 bellows (312), No. 13 bellows (313), No. 14 bellows (314), No. 15 bellows (315), No. 16 bellows (316), No. 17 bellows (317), No. 19 bellows (319), No. 20 bellows (320) from top to bottom respectively with flue A (21), flue B (22) pass through the pipeline intercommunication.

7. The carbon monoxide waste gas recycling treatment system of the sintering machine according to claim 4, characterized in that: no. 6 bellows (306), No. 7 bellows (307), No. 8 bellows (308), No. 21 bellows (321) respectively with flue A (21) pass through the pipeline intercommunication.