CN216639554U

CN216639554U - Device for collecting and recycling diffused gas at top of blast furnace

Info

Publication number: CN216639554U
Application number: CN202123350179.8U
Authority: CN
Inventors: 齐学忠; 张新猛; 蔡骏琪; 李广霞
Original assignee: Cangzhou Wanrun Environmental Protection Equipment Co ltd
Current assignee: Cangzhou Wanrun Environmental Protection Equipment Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-31
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a device for collecting and recycling diffused gas at the top of a blast furnace, which comprises a blast furnace body, wherein the blast furnace body is connected with a cyclone dust collector through a pipeline, the cyclone dust collector is connected with a gravity dust collector through a pipeline, the gravity dust collector is connected with a cloth bag box body through a pipeline, and the cloth bag box body is connected with a low-pressure gas main pipe through a pressure release pipeline. The cyclone dust collector, the gravity dust collector and the cloth bag box body are used for filtering and sorting coal gas, so that dust mixed in the coal gas is filtered and sieved out, and the cyclone dust collector is improved in the coal gas, so that the dust removal effect of equipment is greatly improved, the content of the dust in the coal gas is reduced, and clean production is realized.

Description

Device for collecting and recycling diffused gas at top of blast furnace

Technical Field

The utility model relates to the technical field of blast furnace gas recovery, in particular to a device for collecting and recycling diffused gas at the top of a blast furnace.

Background

When the pressure in the blast furnace rises, the furnace top bleeding valve is automatically opened to bleed redundant pressure so as to keep the pressure in the blast furnace constant, thereby avoiding accidents caused by pressure fluctuation in the blast furnace, and when the blast furnace stops blowing down, the gas in the blast furnace needs to be diffused for a long time into the air, and a large amount of dust contained in the gas can cause air pollution if directly discharged, so how to better clear the dust becomes the important factor in environmental protection production.

SUMMERY OF THE UTILITY MODEL

The utility model aims to avoid the defects in the prior art and provides the collecting and recycling device for the diffused gas at the top of the blast furnace, thereby effectively solving the defects in the prior art.

In order to realize the purpose, the utility model adopts the technical scheme that: a device for collecting and recycling diffused gas at the top of a blast furnace comprises a blast furnace body, wherein the blast furnace body is connected with a cyclone dust collector through a pipeline, the cyclone dust collector is connected with a gravity dust collector through a pipeline, the gravity dust collector is connected with a cloth bag box body through a pipeline, and the cloth bag box body is connected with a low-pressure gas main pipe through a pressure release pipeline;

the cyclone dust collector comprises a dust collector body, an ash bucket is arranged at the lower end of the dust collector body, an ash bin is connected with the lower end of the ash bucket, an air inlet pipe is arranged on one side of the dust collector body, an air outlet pipe is arranged at the upper end of the dust collector body, a central pipeline is arranged in the dust collector body and corresponds to the air outlet pipe, and a plurality of raised bars are circumferentially arranged on the inner wall of the dust collector body.

Further, a metal net is arranged in the central pipeline.

Further, a partition plate is arranged at the lower end of the ash hopper.

Further, a sound insulation layer is arranged on the inner wall of the dust remover body.

Further, the dust remover body is communicated with the ash bin through an ash discharging pipe.

Furthermore, a control butterfly valve is arranged on the ash discharge pipe.

Further, the lower extreme of dust remover body is provided with the supporting leg.

Furthermore, lifting lugs are arranged on two sides above the supporting legs.

The technical scheme of the utility model has the following beneficial effects: according to the utility model, the cyclone dust collector, the gravity dust collector and the cloth bag box body are used for filtering and screening out the dust mixed in the gas, wherein the improvement on the cyclone dust collector greatly improves the dust removal effect of equipment, reduces the content of the dust in the gas and realizes clean production.

Drawings

FIG. 1 is a schematic process flow diagram according to an embodiment of the present invention;

FIG. 2 is a schematic plan view of a cyclone dust collector in accordance with an embodiment of the present invention;

FIG. 3 is a schematic top view of a cyclone dust collector in accordance with an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, the device for collecting and recycling the coal gas discharged from the top of the blast furnace according to the embodiment includes a blast furnace body, the blast furnace body is connected with a cyclone dust collector through a pipeline, the cyclone dust collector is connected with a gravity dust collector through a pipeline, the gravity dust collector is connected with a cloth bag box body through a pipeline, and the cloth bag box body is connected with a low-pressure coal gas main pipe through a pressure relief pipeline;

cyclone includes dust remover body 1, and the lower extreme of dust remover body 1 is provided with ash bucket 2, and the lower extreme of ash bucket 2 is connected with grey storehouse 3, and one side of dust remover body 1 is provided with intake pipe 4, and the upper end of dust remover body 1 is provided with outlet duct 5, and the position that corresponds outlet duct 4 in the dust remover body 1 is provided with central pipeline 6, and the inner wall of dust remover body 1 is provided with a plurality of sand grips 7 along circumference.

The blast furnace body is communicated with the air inlet pipe 2 through a pipeline, the dust-containing coal gas enters the air inlet pipe, and the air outlet pipe 5 is communicated with the gravity dust collector through a pipeline.

The central pipeline 6 is internally provided with a metal net 8, and the metal net 8 can filter and discharge dust in the coal gas.

The ash bucket 2 is internally provided with a partition plate 14 at the lower end thereof, and the partition plate 14 enables the cyclone dust collector to reduce air leakage during discharging.

Be provided with puigging 9 on the inner wall of dust remover body 1, puigging 9 makes cyclone when removing dust, reduces the noise that big particulate matter and 1 inner wall of dust remover collided the production.

The dust remover body 1 is communicated with the ash bin 3 through an ash discharging pipe 10.

The ash discharging pipe 10 is provided with a control butterfly valve 11.

The lower end of the dust collector body 1 is provided with a supporting leg 12.

Lifting lugs 13 are arranged on two sides above the supporting legs 12.

The working principle of the utility model is as follows: the dust-containing coal gas discharged from the blast furnace body enters the cyclone dust collector through the pipeline, dust particles collide with the raised strips 7 in the cyclone dust collector and sink, and finally fall into the ash bin 3, the cyclone dust collector performs primary screening on dust, then the gas enters the gravity dust collector along with the pipeline, the flow velocity of the gas flow is reduced and the flow direction is changed through the gravity dust collector, so that large particles contained in the coal gas are separated from the gas under the action of gravity and inertia, the two dust collectors are matched to efficiently remove dust in a cloth bag of the coal gas, then the gas enters the box body of the coal gas through the pipeline, secondary dust removal is performed on the coal gas, and finally the dedusted coal gas enters the low-pressure coal gas main pipe through the pressure release pipeline, so that the coal gas enters subsequent equipment.

The automatic control valve bank is matched with various pipelines, and automatic opening and closing of various valves are realized through equipment detection.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a blast furnace top diffuses coal gas and collects recycling device which characterized in that: the blast furnace comprises a blast furnace body, wherein the blast furnace body is connected with a cyclone dust collector through a pipeline, the cyclone dust collector is connected with a gravity dust collector through a pipeline, the gravity dust collector is connected with a cloth bag box body through a pipeline, and the cloth bag box body is connected with a low-pressure gas main pipe through a pressure relief pipeline;

2. The blast furnace top diffused gas collecting and recycling device according to claim 1, characterized in that: and a metal net is arranged in the central pipeline.

3. The blast furnace top diffused gas collecting and recycling device according to claim 1, characterized in that: the ash bucket is internally provided with a clapboard at the lower end.

4. The blast furnace top diffused gas collecting and recycling device according to claim 1, characterized in that: and a sound insulation layer is arranged on the inner wall of the dust remover body.

5. The blast furnace top diffused gas collecting and recycling device according to claim 1, characterized in that: the dust remover body is communicated with the ash bin through an ash discharging pipe.

6. The blast furnace top diffused gas collecting and recycling device according to claim 5, characterized in that: and a control butterfly valve is arranged on the ash discharge pipe.

7. The blast furnace top diffused gas collecting and recycling device according to claim 1, characterized in that: the lower extreme of dust remover body is provided with the supporting leg.

8. The blast furnace top diffused gas collecting and recycling device according to claim 7, characterized in that: lifting lugs are arranged on two sides above the supporting legs.