CN219722220U - Tail end pollution discharge collecting device of coal conveying pipeline - Google Patents
Tail end pollution discharge collecting device of coal conveying pipeline Download PDFInfo
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- CN219722220U CN219722220U CN202223349816.4U CN202223349816U CN219722220U CN 219722220 U CN219722220 U CN 219722220U CN 202223349816 U CN202223349816 U CN 202223349816U CN 219722220 U CN219722220 U CN 219722220U
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- Prior art keywords
- blowing
- conveying pipeline
- ash bucket
- coal conveying
- cover plate
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- 239000003245 coal Substances 0.000 title claims abstract description 63
- 238000007664 blowing Methods 0.000 claims abstract description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000012535 impurity Substances 0.000 abstract description 14
- 239000002817 coal dust Substances 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000002802 bituminous coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model discloses a tail end pollution discharge and collection device of a coal conveying pipeline, which comprises a dust removing mechanism and a back blowing chamber; the back blowing chamber is arranged at the top of the dust removing mechanism; the dust removing mechanism comprises an ash bucket, filter bags, a pneumatic flange gate valve and a fixed cover plate, wherein a plurality of filter bags are arranged in the ash bucket, a vent is arranged at the top of each filter bag, the periphery of each vent is fixed on a through hole of the fixed cover plate above the periphery of each vent, and the periphery of each fixed cover plate is fixed with the inner wall of the ash bucket in a sealing manner; the pneumatic flange gate valve is arranged at the bottom of the ash bucket; the nitrogen main pipeline is characterized in that a back-blowing transverse pipe and a back-blowing vertical pipe are arranged in the back-blowing chamber, the back-blowing transverse pipe is communicated with the ventilation opening through the back-blowing vertical pipe, the back-blowing transverse pipe is externally connected with a back-blowing device bag and a pulse valve, and the back-blowing device bag is communicated with the nitrogen main pipeline. The utility model filters the coal dust and the impurities by using the filter bag, and blows the coal dust and the impurities on the outer wall of the filter bag into the ash bucket for recycling through the pulse valve and the back blowing, thereby avoiding environmental pollution and realizing recycling.
Description
Technical Field
The utility model relates to the technical field of blast furnace coal conveying pipeline equipment, in particular to a tail end pollution discharge collecting device of a coal conveying pipeline.
Background
The blast furnace coal injection is to directly inject pulverized coal into a coal conveying pipeline by using an injection tank, and the pulverized coal is injected into the blast furnace through a spray gun after passing through a distributor in front of the coal injection furnace; the coal powder is generally anthracite, bituminous coal or a mixed coal powder of the anthracite and the bituminous coal, and replaces coke to provide heat and reducing agent for the blast furnace so as to reduce the ironmaking cost; in the blast furnace coal injection equipment, there are generally 2-3 injection tanks, and the injection tanks alternately inject coal dust into the blast furnace. In the injection process, unavoidable pulverized coal and impurities remain in a coal conveying pipeline, if the pulverized coal and impurities are not cleaned timely, accumulation is generated, the quality of coal conveying is affected, a drain pipe is connected in parallel at the tail end of the coal conveying pipeline in general, a valve on a distributor pipeline before an injection furnace is closed in a time period of replacing an injection tank, and pulverized coal and impurities remained in an inlet of the coal conveying pipeline to the distributor section before the injection furnace are directly discharged to the air from the drain pipe or the drain pipe is led to a drain ditch through high-pressure gas conveyed to the coal conveying pipeline, so that resources are wasted and the environment is polluted.
The coal dust recovery device of the blast furnace coal conveying pipeline filter disclosed in China patent CN210080057U is characterized in that the coal dust recovery device is additionally arranged on the blast furnace coal conveying pipeline filter, so that the device has no pollution in coal dust recovery, and the problem that the traditional filter has no recovery device, and a filter screen is easy to be blocked and easy to pollute the environment is solved. The pulverized coal and impurities remaining in the pipe are not solved.
Therefore, the pollution discharge and collection device at the tail end of the coal conveying pipeline is designed, the problem of pollution to the environment caused by pollution discharge from the inlet of the coal conveying pipeline to the distributor section in front of the coal injection furnace is solved, the pulverized coal and impurities remained in the coal conveying pipeline are recycled, and the improvement of the quality of the coal conveying is the problem faced by relevant technicians.
Disclosure of Invention
The utility model aims to provide a tail end pollution discharge collecting device of a coal conveying pipeline, which solves the problem of environmental pollution caused by empty pollution discharge in the production of the coal conveying pipeline from an inlet of the traditional coal conveying pipeline to a distributor section before a coal injection furnace or by leading the pollution discharge pipeline into a drainage ditch, and realizes recycling.
The problems of the utility model are solved by the following technical proposal:
the tail end pollution discharge and collection device of the coal conveying pipeline comprises a dust removing mechanism and a back blowing chamber; the back blowing chamber is arranged at the top of the dust removing mechanism; the dust removing mechanism comprises an ash bucket, filter bags, a pneumatic flange gate valve and a fixed cover plate, wherein a plurality of filter bags are arranged in the ash bucket, a vent is arranged at the top of each filter bag, the periphery of each vent is fixed on a through hole of the fixed cover plate above the periphery of each vent, and the periphery of each fixed cover plate is fixed with the inner wall of the ash bucket in a sealing manner; the pneumatic flange gate valve is arranged at the bottom of the ash bucket; the nitrogen main pipeline is characterized in that a back-blowing transverse pipe and a back-blowing vertical pipe are arranged in the back-blowing chamber, the back-blowing transverse pipe is communicated with the ventilation opening through the back-blowing vertical pipe, the back-blowing transverse pipe is externally connected with a back-blowing device bag and a pulse valve, and the back-blowing device bag is communicated with the nitrogen main pipeline.
According to the tail end pollution discharge collecting device of the coal conveying pipeline, the filter bags are arranged at intervals in rows, and each row is correspondingly provided with one back-blowing transverse pipe and one pulse valve.
According to the tail end pollution discharge collecting device of the coal conveying pipeline, the pulse valve is connected with the timer through the electric cabinet.
Above-mentioned coal conveying pipeline end blowdown collection device, the ash bucket is the toper structure, and the tip is down.
According to the tail end pollution discharge collecting device of the coal conveying pipeline, the exhaust holes are formed in the side wall of the back blowing chamber.
Above-mentioned coal conveying pipeline end blowdown collection device still includes the manhole apron, the manhole apron sets up on the top of blowback room, and the circumference is upwards equipped with the rail.
Advantageous effects
According to the tail end pollution discharge collecting device of the coal conveying pipeline, provided by the utility model, the filter bag is utilized to filter the coal dust and impurities, and the coal dust and impurities on the outer wall of the filter bag are blown and shaken into the ash bucket for recycling through the pulse valve and back blowing, so that the environmental pollution is avoided, the recycling is realized, and the coal conveying quality is improved.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the external configuration of the present utility model;
FIG. 2 is a schematic diagram of the novel internal structure of the present application;
FIG. 3 is a schematic view of the mating structure of the blowback cross pipe and the fixed cover plate of the present utility model;
FIG. 4 is a schematic illustration of one embodiment of the present utility model coupled to a main conduit.
The reference numerals in the drawings are respectively as follows: 1. blast furnace, 2, coal powder distributor, 3, coal conveying pipeline, 4, first pneumatic ball valve, 5, second pneumatic ball valve, 6, blow-down pipeline, 7, ash bucket, 8, blowback ware package, 9, pulse valve, 10, pneumatic flange gate valve, 11, air outlet, 12, timer, 13, electric cabinet, 14, coal injection gun, 15, rail, 17, filter bag, 18, nitrogen main pipeline, 19, nitrogen main pipeline ball valve, 20, pulse valve seat, 21, manhole cover plate, 22, blowback cross pipe, 23, blowback standpipe, 24, fixed cover plate, 25, support, 26, support, 27, exhaust port, 28, blowback chamber, 29, vent.
Detailed Description
Referring to fig. 1, 2 and 3, a coal conveying pipeline tail end pollution discharge collection device comprises a dust removal mechanism and a blowback chamber 28; the back-blowing chamber 28 is arranged at the top of the dust removing mechanism; the dust removing mechanism comprises an ash bucket 7, filter bags 17, a pneumatic flange gate valve 10 and a fixed cover plate 24, wherein a plurality of filter bags 17 are arranged in the ash bucket 7, a vent 29 is arranged at the top of each filter bag 17, the periphery of each vent 29 is fixed on a through hole of the fixed cover plate 24 above the vent 29, and the periphery of the fixed cover plate 24 is fixed with the inner wall of the ash bucket 7 in a sealing way; the pneumatic flange gate valve 10 is arranged at the bottom of the ash bucket 7; the back-blowing chamber 28 is internally provided with a back-blowing transverse pipe 22 and a back-blowing vertical pipe 23, the back-blowing transverse pipe 22 is communicated with a vent 29 through the back-blowing vertical pipe 23, the back-blowing transverse pipe 22 is externally connected with a back-blowing device bag 8 and a pulse valve 9, and the back-blowing device bag 8 is communicated with a nitrogen main pipeline 18. In the time period of changing the jetting tank, a first pneumatic ball valve (4) is closed, a second pneumatic ball valve (5) close to the tail end of a coal conveying pipeline is opened, high-pressure gas is conveyed from an inlet of the coal conveying pipeline to the coal conveying pipeline, the high-pressure gas blows pulverized coal and impurities remained in the inlet of the coal conveying pipeline to a distributor section before the coal jetting furnace into a dust removing mechanism, clean gas filtered by a filter bag is discharged from an exhaust port, the pulverized coal and the impurities are adhered to the outer wall of the filter bag, the second pneumatic ball valve is closed, a nitrogen main pipeline ball valve is opened to input nitrogen into a back blower bag, a timer which is set in advance sends out an instruction to open a pulse valve, and the pulverized coal and the impurities adhered to the outer wall of the filter bag fall into an ash bucket under the back blowing and vibration actions and are discharged and recovered through a pneumatic flange gate valve.
Referring to fig. 2 and 3, the filter bags 17 are arranged at intervals in rows, and each row is provided with a back-blowing transverse pipe 22 and a pulse valve 9. The pulse valves are started one by one, and are combined with the blowback pipe to remove pulverized coal and impurities on the outer wall of the filter bag according to vibration.
Referring to fig. 1 and 2, the pulse valve (9) is connected with a timer (12) through an electric control box (13). The timer instructs the electric cabinet to control the opening and closing time of the pulse valve.
Referring to fig. 1 and 2, the ash bucket 7 has a conical structure with a small end facing downwards. The coal dust and impurities are convenient to collect.
Referring to fig. 2, the sidewall of the blowback chamber 28 is provided with a vent 27. The high-pressure gas which is conveyed to the coal conveying pipeline by the inlet of the coal conveying pipeline is discharged after passing through the vent on the filter bag.
Referring to fig. 1 and 2, the device further comprises a manhole cover plate 21, wherein the manhole cover plate 21 is arranged on the periphery of the blowback chamber 28, and a fence 15 is arranged on the periphery of the blowback chamber. And (5) maintaining personnel channels and guaranteeing safety.
Claims (6)
1. The tail end pollution discharge and collection device of the coal conveying pipeline is characterized by comprising a dust removing mechanism and a back blowing chamber (28); the back blowing chamber (28) is arranged at the top of the dust removing mechanism; the dust removing mechanism comprises an ash bucket (7), filter bags (17), a pneumatic flange gate valve (10) and a fixed cover plate (24), wherein a plurality of filter bags (17) are arranged in the ash bucket (7), ventilation openings (29) are formed in the tops of the filter bags (17), the peripheral rings of the ventilation openings (29) are fixed on through holes of the fixed cover plate (24) above the ventilation openings, and the peripheral rings of the fixed cover plate (24) are fixed with the inner wall of the ash bucket (7) in a sealing mode; the pneumatic flange gate valve (10) is arranged at the bottom of the ash bucket (7); the back-blowing chamber (28) is internally provided with a back-blowing transverse pipe (22) and a back-blowing vertical pipe (23), the back-blowing transverse pipe (22) is communicated with a vent (29) through the back-blowing vertical pipe (23), the back-blowing transverse pipe (22) is externally connected with a back-blowing device bag (8) and a pulse valve (9), and the back-blowing device bag (8) is communicated with a nitrogen main pipe (18).
2. The device for collecting the pollution discharge at the tail end of the coal conveying pipeline according to claim 1, wherein the filter bags (17) are arranged at intervals in rows, and each row is provided with a back-blowing transverse pipe (22) and a pulse valve (9) correspondingly.
3. The device for collecting the pollution discharge at the tail end of the coal conveying pipeline according to claim 2, wherein the pulse valve (9) is connected with a timer (12) through an electric control box (13).
4. A coal conveying pipeline end blow-down collecting device according to claim 3, characterized in that the ash bucket (7) is of a conical structure with the small end facing downwards.
5. The device for collecting the pollution discharge at the tail end of the coal conveying pipeline according to claim 4, wherein the side wall of the back blowing chamber (28) is provided with an exhaust hole (27).
6. The coal conveying pipeline tail end blowdown collection device according to claim 5, further comprising a manhole cover plate (21), wherein the manhole cover plate (21) is arranged on the top of the blowback chamber (28), and a fence (15) is arranged upwards on the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223349816.4U CN219722220U (en) | 2022-12-14 | 2022-12-14 | Tail end pollution discharge collecting device of coal conveying pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223349816.4U CN219722220U (en) | 2022-12-14 | 2022-12-14 | Tail end pollution discharge collecting device of coal conveying pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219722220U true CN219722220U (en) | 2023-09-22 |
Family
ID=88062773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223349816.4U Active CN219722220U (en) | 2022-12-14 | 2022-12-14 | Tail end pollution discharge collecting device of coal conveying pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219722220U (en) |
-
2022
- 2022-12-14 CN CN202223349816.4U patent/CN219722220U/en active Active
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