CN218561502U

CN218561502U - Top combustion hot blast stove improved from internal combustion hot blast stove

Info

Publication number: CN218561502U
Application number: CN202223008606.9U
Authority: CN
Inventors: 刘力铭; 刘力源; 李先武; 刘�东; 崔方辉; 姜瑞红; 范剑超
Original assignee: Zhengzhou Yuxing Hot Blast Stove Technology Co ltd
Current assignee: Zhengzhou Yuxing Hot Blast Stove Technology Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-03
Anticipated expiration: 2032-11-11

Abstract

The utility model relates to a top combustion formula hot-blast furnace by internal combustion type hot-blast furnace transformation, the hot-blast main unstability damage of internal combustion type hot-blast furnace can be effectively solved, the partition wall warp the swell, fall the brick, the combustion vibration, partition wall lower part canthus short circuit fire, the problem that the grate burns out, the technical scheme of its solution is, the inherent vault below of furnace body is divided into two by the partition wall, be provided with the combustor below the vault, the combustor is by the wall body, the coal gas return circuit, the air return circuit constitutes, combustor outside top is provided with air inlet, the below is provided with coal gas inlet, the coal gas return circuit, the air return circuit respectively with coal gas reposition of redundant personnel collector, air reposition of redundant personnel collector end all is linked together through gas mixing channel and mixing nozzle, be provided with hot-blast standpipe in the furnace body of combustor below, the utility model discloses structurally more reasonable, the air current is even, spray tube pressure is even, life-span increase more than 2 times, energy-conservation improves more than former equipment more than 40%, is the innovation on the hot-blast furnace.

Description

Top combustion hot blast stove improved from internal combustion hot blast stove

Technical Field

The utility model relates to a hot blast stove, in particular to a top combustion type hot blast stove modified by an internal combustion type hot blast stove.

Background

The hot blast stove is an important corollary equipment in the modern blast furnace ironmaking process, the hot blast stove serving as important equipment of the ironmaking technology also goes through a new-type and large-scale development road, the progress of the related technology of the hot blast stove is strongly promoted, and the structure of the currently used hot blast stove is not only internal combustion type and top combustion type. The internal combustion type hot blast stove with the combustion chamber fire shaft parallel to the regenerator is applied to large-scale hot blast stoves in a large number, but because the internal combustion type hot blast stove with the combustion chamber fire shaft parallel to the regenerator has the unstable combustion shock and the uneven distribution of ball current that lead to of combustion chamber flow field structure, the hot-blast main unstability damage of easily appearing, partition wall deformation swell, fall the brick, the combustion vibration, partition wall lower part eye angle short circuit scurries fire, defects such as stove operator burns out, direct influence normal work. Therefore, how to improve the structure of the hot blast stove to obtain a stove type structure with reasonable structure, stable and uniform airflow and good heat transfer and combustion effects is a technical problem which needs to be solved at present.

Disclosure of Invention

In view of the above situation, in order to solve the defects of the prior art, the present invention aims to provide a top combustion type hot blast stove modified from an internal combustion type hot blast stove, which can effectively solve the problems of instability and damage of a hot blast pipe of the internal combustion type hot blast stove, deformation and bulging of a partition wall, brick falling, combustion vibration, short circuit fire at the lower eye corner of the partition wall, and burning out of a grate.

The utility model provides a technical scheme be, the induction cooker comprises a cooker bod, vault and combustor, the inherent vault below of furnace body is divided into two by the partition wall, be provided with the combustor below the vault, the combustor is by the wall body, the coal gas circuit, the air circuit constitutes, combustor outside top is provided with air inlet, the below is provided with the coal gas entry, the coal gas circuit, the air circuit respectively with coal gas reposition of redundant personnel collector, the air reposition of redundant personnel collector is linked together, coal gas reposition of redundant personnel collector, the air reposition of redundant personnel collector is terminal all to be linked together through gas mixture passageway and mixing nozzle, be provided with hot-blast standpipe in the furnace body of combustor below, be equipped with rather than assorted sealing sleeve (inside lining) in the hot-blast standpipe, opposite side is provided with the regenerator in the adjacent furnace body of sealing sleeve.

The utility model discloses structurally more reasonable, the air current is even, spray tube pressure is even, excellent in use effect, and the life-span increases more than 2 times, and is energy-concerving and environment-protective, and energy-conservation improves more than 40% than former equipment, improves the combustion condition, improves combustion strength, effectively improves the utilization efficiency of heat accumulator more, is the innovation on the hot-blast furnace.

Drawings

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

Fig. 2 is a sectional view of the burner of the present invention.

Fig. 3 is a cross-sectional view of the regenerator of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

The utility model is shown by figures 1-3, the utility model discloses a furnace body 1, vault 2 and combustor 5, be divided into two by the partition wall below the vault in the furnace body 1, be provided with combustor 5 below the vault, combustor 5 comprises the wall body, gas circuit 9, air circuit 8, combustor 5 outside top is provided with air inlet 16, the below is provided with gas inlet 17, gas circuit 9, air circuit 8 are linked together with gas reposition of redundant personnel collector 6, air reposition of redundant personnel collector 7 respectively, gas reposition of redundant personnel collector 6, air reposition of redundant personnel collector 7 end all is linked together through gas mixture passageway and mixing nozzle 4, be provided with hot-blast standpipe in the furnace body of combustor 5 below, be equipped with rather than assorted seal sleeve 10 in the hot-blast standpipe, the opposite side is provided with regenerator 11 in the adjacent furnace body 1 of seal sleeve 10.

In order to ensure the using effect, the middle lower part of the sealing sleeve 10 is provided with a hot air outlet 12.

The bottom of the heat storage chamber 11 is provided with a smoke cooling chamber, and a smoke outlet 13 is arranged on the smoke cooling chamber.

The vault 2 is an inverted catenary vault.

The bottom of the sealing sleeve 10 is provided with a manhole 14.

And the space from the lower part of the manhole 14 to the bottom of the furnace body 1 is filled with refractory castable 15.

The regenerator 11 is filled with honeycomb checker bricks.

The air loop 8 and the vault 2 are integrally supported on a supporting plate of the furnace body 1.

The lower gas loop 9 of the burner 5, the gas shunt header 6 and the mixing nozzle 4 form an integrated structure, are separated from the integrated structure of the air loop and the vault and are connected by adopting a labyrinth sliding seam, and the burner 5 is built on a support supporting plate welded on the furnace body 1.

The combustor 5 is separated from the heat storage chamber 11 and the sealing sleeve 10, and the heat storage chamber 11 and the sealing sleeve 10 are relatively and independently supported on the bottom of the furnace body 1.

The utility model discloses a user condition is, reform transform the internal-combustion type hot-blast furnace that is on a parallel with the regenerator to current combustion chamber fire shaft, because internal-combustion type hot-blast furnace combustor is below the fire shaft, burning and air supply difference in temperature lead to the partition wall to damage and the flue gas of burning and the flue gas short circuit of air supply, lead to the wind temperature not to go up (the checker brick on upper portion is hardly used during the short circuit), the frequent lower part manhole damping down of collapsing of fire shaft draws out the brick, influence wind temperature and output, reform transform internal combustion into the top combustion formula, abolish the fire shaft lower part burning operating mode, become to burn on upper portion, the fire shaft only plays the effect of air supply passageway, just so do not burn and air supply the problem that the fire shaft structure was damaged to the temperature difference in the bottom, and laborsaving province work money of saving under the unmovable stove outer furnace shell and outside pipe network condition reforms transform, at first demolish the interior lining material of original internal-combustion type hot-blast furnace, then carry out the construction of refractory material inside lining again; the newly constructed refractory material lining consists of a furnace body, the upper part of a hot air vertical pipe, a vault and a burner, the fire well of the original internal combustion type hot blast stove is transformed to be used as the hot air vertical pipe, and the refractory material lining is thickened; the burner is arranged at the upper part of the furnace body below the vault, the burner is provided with a burner wall body, a gas loop and a combustion air loop, the gas loop and the combustion air loop are arranged in the wall body of the burner, the outer wall body is provided with a gas inlet communicated with the gas loop, the upper part of the gas loop is the combustion air loop, the outer side of the wall body is provided with the combustion air inlet communicated with the gas loop, the hot air vertical pipe is arranged in the furnace body in an eye shape, the hot air outlet is positioned at the middle lower part of the hot air vertical pipe, and the right side of the hot air vertical pipe is provided with a regenerator.

The utility model discloses by the linear vault of inversion catenary and the combustor of setting at its coal gas and air mixing nozzle of bottom below, enable coal gas and air current intensive mixing, reach the effect of complete combustion, combustor and hot-blast standpipe can effectively solve the hot-blast main unstability damage in the furnace body, partition wall deformation swell, fall the brick, the burning vibration, partition wall lower part canthus short circuit fire, the problem that the stove operator burns out, the utility model discloses the stove type after the transformation is rational in infrastructure, the air current is stable even with the distribution, and possess good heat transfer and combustion effect, the air current is even, spray tube pressure is even, excellent in use effect, and the life-span increases more than 2 times, has effectively improved combustion conditions, has improved combustion strength, effectively improves the utilization efficiency of heat accumulator more, has reduced environmental pollution, is the innovation on the hot-blast furnace, and economic and social are huge.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make modifications or equivalent variations without departing from the scope of the present invention.

Claims

1. A top combustion type hot blast stove reformed by an internal combustion type hot blast stove comprises a stove body (1), a vault (2) and a burner (5), and is characterized in that the lower portion of the vault in the stove body (1) is divided into two parts by a partition wall, the lower portion of the vault (2) is provided with the burner (5), the burner (5) is composed of a wall body, a gas loop (9) and an air loop (8), the upper portion of the outer side of the burner (5) is provided with an air inlet (16), the lower portion of the burner is provided with a gas inlet (17), the gas loop (9) and the air loop (8) are respectively communicated with a gas distribution manifold (6) and an air distribution manifold (7), the tail ends of the gas distribution manifold (6) and the air distribution manifold (7) are communicated with a mixing nozzle (4) through a mixed gas channel, a hot blast standpipe is arranged in the stove body below the burner (5), a sealing sleeve (10) matched with the hot blast standpipe is arranged in the hot blast standpipe, and the other side in the stove body (1) adjacent to the sealing sleeve (10) is provided with a heat storage chamber (11).

2. The top combustion stove retrofitted from an internal combustion stove according to claim 1, wherein said sealing sleeve (10) is provided with a hot air outlet (12) at its lower middle portion.

3. The top combustion stove modified from the internal combustion stove according to claim 1, characterized in that the bottom of the regenerator (11) is provided with a flue gas cooling chamber, on which a flue gas outlet (13) is provided.

4. A top-fired hot blast stove retrofitted from an internal combustion hot blast stove according to claim 1, characterised in that said dome (2) is an inverted catenary dome.

5. The top combustion stove retrofitted from an internal combustion stove according to claim 1, characterised in that the bottom of the sealing sleeve (10) is provided with a manhole (14).

6. The top combustion stove retrofitted from an internal combustion stove according to claim 5, wherein the space below said manhole (14) to the bottom of the stove body (1) is filled with refractory castable (15).

7. The top combustion stove retrofitted to an internal combustion stove according to claim 1, wherein said regenerator (11) is filled with honeycomb checker bricks.

8. The top combustion stove retrofitted from an internal combustion stove according to claim 1, characterised in that the air circuit (8) and the dome (2) are arranged to be supported integrally on a stove body (1) support pallet.

9. The top combustion stove modified from the internal combustion stove according to claim 8, characterized in that the lower gas loop (9) of the burner (5), the gas manifold (6) and the mixing nozzle (4) form an integrated structure, which is separated from the integrated structure of the air loop and the vault and connected by a labyrinth sliding seam, and the burner (5) is built on a support pallet welded on the stove body (1).

10. The top combustion stove modified from the internal combustion stove according to claim 1, characterized in that the burner (5) is separated from the regenerator (11) and the sealing sleeve (10), and the regenerator (11) and the sealing sleeve (10) are relatively independently supported on the bottom of the stove body (1).