CN219174526U

CN219174526U - Pulverized coal recovery device for spray gun

Info

Publication number: CN219174526U
Application number: CN202320287547.9U
Authority: CN
Inventors: 田国庆; 谭海波; 刘向辉; 马利; 袁代连
Original assignee: Chongqing Iron and Steel Co Ltd
Current assignee: Chongqing Iron and Steel Co Ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-13
Anticipated expiration: 2033-02-22

Abstract

The utility model belongs to the field of metallurgy and coal, and relates to a pulverized coal recycling device for a spray gun, which comprises a pulverized coal spray gun, a gun valve, an inlet valve, a quick connector, a coal flow detection and a coal valve which are sequentially connected with each blast furnace tuyere, wherein a nitrogen purging pipeline is arranged on a pipeline between the coal valve and the coal flow detection, a bleeding branch pipe is arranged between the gun valve and the inlet valve, and the bleeding branch pipe is communicated with a bleeding enclosing pipe; the diffusing enclosing pipe is communicated with the cloth bag filtering device through the collecting main pipe. The utility model can effectively solve the problems of coal dust resource waste, environmental pollution and the like caused by the process of treating the blockage of the spray gun; the reasonable utilization of resources and the standard reaching of the site environment are ensured, the concept of green environmental protection is fully implemented, and the sustainable development is realized; the pulverized coal discharged by the pulverized coal spray gun bleeding valve is collected and recycled by arranging devices such as a bleeding branch pipe, a bleeding enclosing pipe, a collecting main pipe and the like, so that the resource waste is avoided and the whole process is fully sealed; meanwhile, the device has the advantages of low cost, convenient use, high reliability and the like.

Description

Pulverized coal recovery device for spray gun

Technical Field

The utility model belongs to the field of metallurgy and coal, and relates to a device for recycling coal dust discharged by a spray gun.

Background

In the process of coal injection of the blast furnace, the mixture of coal dust and nitrogen is finally injected into a blast furnace tuyere through a coal dust spray gun. But in the normal production process, the coal powder spray gun is blocked due to the reasons of coal powder quality problem or more sundries in the coal powder, the blocking position is basically at the inlet valve of the coal powder spray gun, after the coal powder spray gun is blocked, residual coal powder in the blockage removing process is finally discharged into the atmosphere through a bleeding valve and a bleeding branch pipe, and the blockage removing process can cause: (1) the pulverized coal resource waste is serious; (2) after the pulverized coal is scattered, the tuyere platform and the surrounding environment are greatly polluted, so that the environmental protection is not up to standard; (3) workers can inhale dust in the process of treating the blockage, so that occupational diseases of the workers are easy to occur, and physical and mental health of the workers is not facilitated.

Disclosure of Invention

In view of the above, the utility model aims to provide a pulverized coal recycling device for a spray gun, which solves the problems of pulverized coal resource waste, environmental pollution and the like caused by the process of treating spray gun blockage in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the device comprises a pulverized coal spray gun, a gun valve, an inlet valve, a quick connector, a coal flow detection and a coal valve which are sequentially connected with each blast furnace tuyere, wherein a nitrogen purging pipeline is arranged on a pipeline between the coal valve and the coal flow detection, and a diffusing branch pipe is arranged between the gun valve and the inlet valve and communicated with a diffusing enclosing pipe; the diffusing enclosing pipe is communicated with the cloth bag filtering device through the collecting main pipe.

Optionally, the number of the diffusing branch pipes is matched with that of the blast furnace tuyeres, and the diffusing branch pipes are communicated with the diffusing enclosing pipes.

Optionally, nitrogen is introduced into the nitrogen purging pipeline, and a purging valve is further arranged on the nitrogen purging pipeline.

Optionally, a bleed valve is arranged on the bleed branch pipe.

Optionally, the top of the cloth bag filter device is provided with a pulse purging device for introducing nitrogen, the bottom of the cloth bag filter device is provided with an ash bucket, and the bottom of the ash bucket is communicated with a suction and discharge vehicle through an ash discharge valve.

Optionally, the diffusing surrounding pipe is an annular pipeline structure surrounding the blast furnace, so that each diffusing branch pipe is conveniently communicated.

The utility model has the beneficial effects that: the device for recycling the scattered coal dust of the spray gun can effectively solve the problems of coal dust resource waste, environmental pollution and the like caused by the process of treating blockage of the spray gun; the reasonable utilization of resources and the standard reaching of the site environment are ensured, the concept of green environmental protection is fully implemented, and the sustainable development is realized; the pulverized coal discharged by the pulverized coal spray gun bleeding valve is collected and recycled by arranging devices such as a bleeding branch pipe, a bleeding enclosing pipe, a collecting main pipe and the like, so that the resource waste is avoided and the whole process is fully sealed; meanwhile, the device has the advantages of low cost, convenient use, high reliability and the like.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

fig. 1 is an overall schematic of the present utility model.

Reference numerals: the device comprises a blast furnace tuyere 1, a pulverized coal spray gun 2, a gun valve 3, a bleeding valve 4, a bleeding branch pipe 5, an inlet valve 6, a quick connector 7, a coal flow detection 8, a coal valve 9, a purging valve 10, a bleeding enclosing pipe 11, a collecting main pipe 12, a cloth bag filtering device 13, a pulse purging device 14, an ash bucket 15 and an absorbing and discharging vehicle 16.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1, a pulverized coal recycling device for a lance, comprising a pulverized coal lance 2, a lance valve 3, an inlet valve 6, a quick connector 7, a coal flow detection 8 and a coal valve 9 which are sequentially connected with each blast furnace tuyere 1, wherein a nitrogen purging pipeline is arranged on a pipeline between the coal valve 9 and the coal flow detection 8, a bleeding branch pipe 5 is arranged between the lance valve 3 and the inlet valve 6, and the bleeding branch pipe 5 is communicated with a bleeding enclosing pipe 11; the utility model provides a nitrogen gas is blown down in the pipeline, and the branch pipe is blown down in the branch pipe 11 through collecting house steward 12 intercommunication sack filter 13, and the quantity of branch pipe 5 of blowing down matches with the quantity of blast furnace tuyere 1 to all with the branch pipe 11 intercommunication of blowing down, the nitrogen gas has been let in, still is provided with on it and has blown down valve 10, is provided with on the branch pipe 5 of blowing down and blows up valve 4, and sack filter 13 top is provided with the pulse that is used for letting in nitrogen gas and sweeps device 14, and the bottom is provided with ash bucket 15, and ash bucket 15 bottom has suction and exhaust car 16 through the valve intercommunication of unloading, and the branch pipe 11 of blowing down is for the cyclic annular pipeline structure around the blast furnace, is convenient for communicate every branch pipe 5 of blowing down.

When the utility model is used, the specific process flow is as follows:

(1) When the coal flow detection 8 corresponding to a certain blast furnace tuyere 1 does not detect the coal flow, prompting the blockage condition of a spray gun pipeline;

(2) Closing the coal valve 9 and the gun valve 3, and opening the purge valve 10 and the blow-off valve 4;

(3) High-pressure nitrogen enters a spray gun pipeline through a purge valve 10, and a plug finally enters a cloth bag filter device 13 for collection through an inlet valve 6, a diffusion valve 4, a diffusion branch pipe 5, a diffusion enclosing pipe 11 and a collection main pipe 12;

(4) After the mixture of the pulverized coal and the nitrogen is filtered by the cloth bag filter device 13, the pulverized coal is attached to the cloth bag, and the filtered clean nitrogen is discharged.

(5) The pulse blowing device 14 blows the pulverized coal attached to the cloth bag to the ash bucket 15, and finally the pulverized coal is transported and recycled through the suction and discharge vehicle 16. Realizing the full sealing of the whole blockage removing process.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims

1. The utility model provides a spray gun diffuses buggy recovery unit which characterized in that: the device comprises a pulverized coal spray gun, a gun valve, an inlet valve, a quick connector, a coal flow detection and a coal valve which are sequentially connected with each blast furnace tuyere, wherein a nitrogen purging pipeline is arranged on a pipeline between the coal valve and the coal flow detection, a diffusing branch pipe is arranged between the gun valve and the inlet valve, and the diffusing branch pipe is communicated with a diffusing enclosing pipe;

the diffusing enclosing pipe is communicated with the cloth bag filtering device through the collecting main pipe.

2. The lance blow-off coal dust recovery apparatus of claim 1 wherein: the number of the diffusing branch pipes is matched with that of the blast furnace tuyeres, and the diffusing branch pipes are communicated with the diffusing enclosing pipes.

3. The lance blow-off coal dust recovery apparatus of claim 1 wherein: nitrogen is introduced into the nitrogen purging pipeline, and a purging valve is further arranged on the nitrogen purging pipeline.

4. The lance blow-off coal dust recovery apparatus of claim 1 wherein: the diffusing branch pipe is provided with a diffusing valve.

5. The lance blow-off coal dust recovery apparatus of claim 1 wherein: the top of the cloth bag filter device is provided with a pulse purging device for introducing nitrogen, the bottom of the cloth bag filter device is provided with an ash bucket, and the bottom of the ash bucket is communicated with a suction and discharge vehicle through an ash discharge valve.

6. The lance blow-off coal dust recovery apparatus of claim 1 wherein: the diffusing enclosing pipe is an annular pipeline structure surrounding the blast furnace, and is convenient to communicate with each diffusing branch pipe.