CN111961482A - Coal box smoke dust collecting device of tamping coke oven coal charging car - Google Patents
Coal box smoke dust collecting device of tamping coke oven coal charging car Download PDFInfo
- Publication number
- CN111961482A CN111961482A CN202010949272.1A CN202010949272A CN111961482A CN 111961482 A CN111961482 A CN 111961482A CN 202010949272 A CN202010949272 A CN 202010949272A CN 111961482 A CN111961482 A CN 111961482A
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- coal
- dust collecting
- smoke
- pipeline
- coke oven
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- 239000003245 coal Substances 0.000 title claims abstract description 165
- 239000000428 dust Substances 0.000 title claims abstract description 93
- 239000000779 smoke Substances 0.000 title claims abstract description 80
- 239000000571 coke Substances 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 238000000746 purification Methods 0.000 claims abstract description 13
- 238000010926 purge Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000004071 soot Substances 0.000 claims 4
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 210000002421 cell wall Anatomy 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 4
- 238000003763 carbonization Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B43/00—Preventing or removing incrustations
- C10B43/14—Preventing incrustations
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The invention provides a coal box smoke dust collecting device of a tamping coke oven coal charging car, which comprises: the smoke and dust purification unit comprises a coal tank wall dust collecting hood, a dust collecting pipeline and a furnace end smoke purification system, wherein the coal tank wall dust collecting hood is arranged above the coal tank wall of the coal receiving-free plate coal tank of the coal charging car and close to the front end of a coal charging box of a coke oven, and the coal tank wall dust collecting hood is connected to the furnace end smoke purification system through the dust collecting pipeline; the airflow guiding unit comprises a compressed air system, an air path pipeline I and a coal chute wall injection pipe, wherein the coal chute wall injection pipe is arranged below a coal receiving plate of a coal chute wall at the opposite side of a coal chute wall dust collecting hood, and the coal chute wall injection pipe is connected with the compressed air system through the air path pipeline I.
Description
Technical Field
The invention relates to the technical field of tamping coke oven machinery environment protection, in particular to a coal box smoke dust collecting device of a coal charging car of a tamping coke oven.
Background
Along with the improvement of the national requirement on environmental protection, the consciousness of coking enterprises on environmental protection is enhanced, in recent years, a machine side smoke dust collecting device is gradually added on a tamping coke oven machine, mainly aiming at the operation process of a coal charging car with large smoke dust overflow amount, the smoke dust collecting system is generally installed at the position of a coke oven head or the position of the coal charging car close to the coke oven head, but due to the characteristics of the coal charging process of the tamping coke oven, the coal charging car finishes the later stage of the coal charging process in a carbonization chamber, after a coal charging bottom plate retreats into a coal box, a large amount of smoke dust overflows from the bottom of the coal box along with the coal charging bottom plate, escapes from the collecting range of the smoke hood of the coke oven head, and because of the requirement of the coal charging process, a dust collecting smoke hood cannot be erected at the upper part of. In the process of actual operation, in the later stage of coal charging of a coal charging car, a coal charging bottom plate returned from a carbonization chamber has a large amount of smoke and dust which escape outwards to cause pollution to the environment, and the existing furnace end smoke collecting device cannot solve the problem of collection of the overflowing smoke and dust.
Therefore, a coal box smoke dust collecting device of a coal charging car of the tamping coke oven needs to be designed.
Disclosure of Invention
According to the furnace end smoke collecting device, the technical problem that excessive smoke is collected cannot be solved, and the coal box smoke collecting device of the coal charging car of the tamping coke oven is provided. The invention mainly utilizes the jet effect generated by continuously jetting high-pressure gas into the dust collecting smoke hood by the coal chute wall jetting pipe and matching the negative pressure cavity of the coal chute wall dust collecting smoke hood to guide smoke dust to enter the coal chute wall dust collecting smoke hood, thereby realizing zero-leakage collection of the smoke dust of the burner.
The technical means adopted by the invention are as follows:
the utility model provides a tamping coke oven coal-charging car coal bin smoke and dust collection device which characterized in that includes: the smoke and dust purification unit comprises a coal tank wall dust collecting hood, a dust collecting pipeline and a furnace end smoke purification system, wherein the coal tank wall dust collecting hood is arranged above the coal tank wall of a coal receiving plate-free coal tank of the coal charging car and close to the front end of a coal charging box of a coke oven, and the coal tank wall dust collecting hood is connected to the furnace end smoke purification system through the dust collecting pipeline; the airflow guiding unit comprises a compressed air system, an air path pipeline I and a coal chute wall injection pipe, the coal chute wall injection pipe is arranged below a coal receiving plate of a coal chute wall on the opposite side of the coal chute wall dust collecting smoke hood, and the coal chute wall injection pipe is connected with the compressed air system through the air path pipeline I.
Further, the coal cell wall dust collecting smoke hood is of a rectangular flat opening structure, a purging device is arranged in the coal cell wall dust collecting smoke hood, and the purging device is connected with the compressed air system through a gas circuit pipeline II.
Furthermore, the coal chute wall injection pipe is connected with the gas path pipeline I through a gas path hose I, and the purging device is connected with the gas path pipeline II through a gas path hose II.
Further, the outer side of the coal chute wall dust collecting smoke hood is provided with a smoke hood protection frame, and the smoke hood protection frame is arranged on a three-layer platform of the coal charging car.
Furthermore, a dust collecting pipeline compensation device and a pipeline adjusting valve are arranged on the dust collecting pipeline.
Furthermore, a maintenance construction platform is arranged above the smoke hood protection frame.
Compared with the prior art, the invention has the following advantages:
1. the invention provides a coal box smoke dust collecting device of a coal charging car of a tamping coke oven, which can effectively collect and purify smoke dust overflowed from a coal charging bottom plate in the coal charging process by adopting a blowing and sucking cover principle, solves the industrial problem of a furnace end smoke collecting system, and realizes the full-sealed collection and transmission of furnace end smoke and zero leakage.
2. The coal box smoke dust collecting device of the coal charging car of the stamp-charging coke oven provided by the invention has the advantages that the smoke dust collecting device of the coal charging car of the stamp-charging coke oven is adopted, furnace end smoke is directly sucked in real time on the premise of not influencing the coal charging process, the smoke dust is collected in the whole working process, the working efficiency is high, the structure is simple, and the operation is convenient.
3. According to the coal box smoke dust collecting device of the tamping coke oven coal charging car, the smoke cover protecting frame is adopted to support and protect the dust collecting smoke cover on the wall of the coal chute, so that the service life of the dust removing cover is prolonged, and the dust removing cover can be reliably used under the working condition environment; the purging device in the built-in coal trough wall dust collecting smoke hood ensures the working stability of the dust collecting smoke hood; the device has simple structure and convenient maintenance.
Based on the reasons, the invention can be widely popularized in the fields of tamping coke oven mechanical environment protection technology and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a coal box smoke dust collecting device of a coal charging car of a tamping coke oven.
FIG. 2 is a schematic view of the smoke dust collecting device of the coal box of the coal charging car of the stamp-charging coke oven in the direction of A in FIG. 1.
In the figure: 1. a dust collecting hood on the wall of the coal tank; 2. a dust collecting duct; 3. a coal chute wall injection pipe; 4. a smoke hood protecting frame; 5. a coal receiving plate; 6. a compressed air system; 7. a gas path pipeline I; 8. a dust collecting pipe compensation device; 9. an air path hose I; 10. a purging device; 11. a furnace end smoke purification system; 12. a pipeline regulating valve; 13. and an air path hose II.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
As shown in FIGS. 1-2, the present invention provides a coal box smoke dust collecting device of a coal charging car of a stamp-charging coke oven, comprising: smoke and dust purifying unit and air current guide unit, smoke and dust purifying unit includes coal scuttle wall collection dirt petticoat pipe 1, dust collecting pipeline 2 and furnace end cigarette clean system 11, coal scuttle wall collection dirt petticoat pipe 1 sets up and does not have the coal charging bunker front end that connects the coal board 5 coal scuttle wall top near the coke oven, the outside of coal scuttle wall collection dirt petticoat pipe 1 is equipped with petticoat pipe fender bracket 4, petticoat pipe fender bracket 4 sets up on the three-layer platform of coal charging car, the petticoat pipe fender bracket 4 top is equipped with maintains the construction platform, coal scuttle wall collection dirt petticoat pipe 1 passes through dust collecting pipeline 2 connects on furnace end cigarette clean system 11, be equipped with dust collecting pipeline compensation arrangement 8 and pipeline adjusting valve 12 on the dust collecting pipeline 2, coal scuttle wall collection dirt petticoat pipe 1 is rectangle flat mouth structure, be equipped with in the coal scuticoat pipe wall collection petticoat pipe 1 and sweep device 10, the blowing device 10 is connected with the gas path pipeline II through a gas path hose II 13; the airflow guiding unit comprises a compressed air system 6, an air path pipeline I7 and a coal chute wall injection pipe 3, the coal chute wall injection pipe 3 is arranged below a coal receiving plate 5 of a coal chute wall at the opposite side of the coal chute wall dust collecting smoke hood 1, the coal chute wall injection pipe 3 is connected with the compressed air system 6 through an air path pipeline I7, and the coal chute wall injection pipe 3 is connected with the air path pipeline I7 through an air path hose I9.
Example 1
As shown in FIGS. 1-2, the present invention provides a coal box smoke dust collecting device of a coal charging car of a stamp-charging coke oven, comprising: smoke and dust purifying unit and air current guide unit, smoke and dust purifying unit includes coal scuttle wall collection dirt petticoat pipe 1, dust collecting pipeline 2 and furnace end cigarette clean system 11, coal scuttle wall collection dirt petticoat pipe 1 sets up and does not have the coal charging bunker front end that connects the coal board 5 coal scuttle wall top near the coke oven, the outside of coal scuttle wall collection dirt petticoat pipe 1 is equipped with petticoat pipe fender bracket 4, petticoat pipe fender bracket 4 sets up on the three-layer platform of coal charging car, the petticoat pipe fender bracket 4 top is equipped with maintains the construction platform, coal scuttle wall collection dirt petticoat pipe 1 passes through dust collecting pipeline 2 connects on furnace end cigarette clean system 11, be equipped with dust collecting pipeline compensation arrangement 8 and pipeline adjusting valve 12 on the dust collecting pipeline 2, coal scuttle wall collection dirt petticoat pipe 1 is rectangle flat mouth structure, be equipped with in the coal scuticoat pipe wall collection petticoat pipe 1 and sweep device 10, the blowing device 10 is connected with the gas path pipeline II through a gas path hose II 13; the airflow guiding unit comprises a compressed air system 6, an air path pipeline I7 and a coal chute wall injection pipe 3, the coal chute wall injection pipe 3 is arranged below a coal receiving plate 5 of a coal chute wall at the opposite side of the coal chute wall dust collecting smoke hood 1, the coal chute wall injection pipe 3 is connected with the compressed air system 6 through an air path pipeline I7, and the coal chute wall injection pipe 3 is connected with the air path pipeline I7 through an air path hose I9.
When the coal charging car is operated, the pipeline adjusting valve 12 is opened to be communicated with the furnace smoke head purification system 11 through the dust collecting pipeline 2, and negative pressure is generated in the coal chute wall dust collecting smoke hood 1. The coal chute wall injection pipes 3 on the coal chute wall on the other side are connected to the compressed air system 6 through the air path pipelines I7 and the air path hose I9, compressed air is provided by the compressed air system 6, air flow is ejected to the opposite coal chute wall dust collecting smoke hood 1, when smoke brought out by the coal charging bottom plate is diffused to the upper part from the bottom of the coal chute, the air flow is ejected by the coal chute wall injection pipes 3 to close a path that the smoke drifts upwards, the smoke is guided into the collection range of the coal chute wall dust collecting smoke hood 1 through jet flow effect, a blowing and sucking dust collection effect is formed, the smoke is effectively collected and sent into the furnace end smoke purification system 11 for purification. After the coal charging operation is finished, the pipeline regulating valve 12 and the compressed air system 6 are closed at the same time, and the actions are circulated when the next carbonization chamber operation is waited.
Coal cell wall collection dirt petticoat pipe 1 is installed in petticoat pipe fender bracket 4, petticoat pipe fender bracket 4 plays support and guard action, 4 upper portions of petticoat pipe fender bracket are equipped with the platform, make things convenient for operating personnel to pass through with the work needs, the fixed of 4 lower parts of petticoat pipe fender bracket and three-layer platform can be dismantled locking moving.
Purging device 10 is built-in coal cell wall collection dirt petticoat pipe 1 prevents that the coal-charging car from when the coal tamping in the coal bunker, has the buggy to fall into coal cell wall collection dirt petticoat pipe 1 blocks up it, accomplishes the back at the tamping briquette, before the coal-charging operation, right coal cell wall collection dirt petticoat pipe 1 mouth once sweeps, prevents that the buggy from blockking coal cell wall collection dirt petticoat pipe 1 and quilt are inhaled in the dust collecting pipeline 2.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a tamping coke oven coal-charging car coal bin smoke and dust collection device which characterized in that includes: the smoke and dust purification unit comprises a coal tank wall dust collecting hood, a dust collecting pipeline and a furnace end smoke purification system, wherein the coal tank wall dust collecting hood is arranged above the coal tank wall of a coal receiving plate-free coal tank of the coal charging car and close to the front end of a coal charging box of a coke oven, and the coal tank wall dust collecting hood is connected to the furnace end smoke purification system through the dust collecting pipeline; the airflow guiding unit comprises a compressed air system, an air path pipeline I and a coal chute wall injection pipe, the coal chute wall injection pipe is arranged below a coal receiving plate of a coal chute wall on the opposite side of the coal chute wall dust collecting smoke hood, and the coal chute wall injection pipe is connected with the compressed air system through the air path pipeline I.
2. The coal box smoke dust collecting device of the stamp-charging coke oven coal charging car of claim 1, wherein the coal tank wall dust collecting hood is of a rectangular flat-mouth structure, a purging device is arranged in the coal tank wall dust collecting hood, and the purging device is connected with the compressed air system through a gas path pipeline II.
3. The coal box smoke dust collecting device of the stamp-charging coke oven coal charging car of claim 1, wherein the coal chute wall injection pipe is connected with the gas pipeline I through a gas pipeline hose I, and the purging device is connected with the gas pipeline II through a gas pipeline hose II.
4. The device for collecting the soot dust in the coal bunker of the stamp-charging coke oven as claimed in claim 1, wherein a soot hood protecting frame is arranged on the outer side of the dust collecting soot hood of the coal bunker, and the soot hood protecting frame is arranged on a three-layer platform of the coal bunker.
5. The coal box smoke dust collecting device of the stamp-charging coke oven coal charging car of claim 1, wherein a dust collecting pipeline compensation device and a pipeline adjusting valve are arranged on the dust collecting pipeline.
6. The coal box smoke dust collecting device of the tamping coke oven coal charging car of claim 1, wherein a maintenance construction platform is arranged above the smoke cover protection frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949272.1A CN111961482B (en) | 2020-09-10 | 2020-09-10 | Smoke dust collecting device for coal box of tamping coke oven coal charging car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010949272.1A CN111961482B (en) | 2020-09-10 | 2020-09-10 | Smoke dust collecting device for coal box of tamping coke oven coal charging car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111961482A true CN111961482A (en) | 2020-11-20 |
| CN111961482B CN111961482B (en) | 2024-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010949272.1A Active CN111961482B (en) | 2020-09-10 | 2020-09-10 | Smoke dust collecting device for coal box of tamping coke oven coal charging car |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001003061A (en) * | 1999-06-18 | 2001-01-09 | Sumitomo Metal Ind Ltd | Apparatus for cleaning coal charging opening of coke oven |
| JP2006077222A (en) * | 2004-09-09 | 2006-03-23 | Shinwa Corp | Dust collector of coke oven |
| CN101845309A (en) * | 2010-06-22 | 2010-09-29 | 四川达兴能源股份有限公司 | Coal charging and dust removing device at tamping coke oven machine side |
| CN104059679A (en) * | 2014-07-10 | 2014-09-24 | 攀钢集团西昌钢钒有限公司 | Coaling dust exhaust system for stamp-charging coke ovens |
| CN110172353A (en) * | 2019-07-12 | 2019-08-27 | 大连华锐重工焦炉车辆设备有限公司 | Tamping coke furnace machinery pusher side dust collection for charging system and its operating procedure |
| CN111303910A (en) * | 2020-03-12 | 2020-06-19 | 太原重工股份有限公司 | Tamping coke oven coal-charging smoke dust collecting system |
| CN211420053U (en) * | 2019-12-02 | 2020-09-04 | 中冶焦耐(大连)工程技术有限公司 | Tamping coke oven coal-charging smoke dust treatment system |
| CN212532854U (en) * | 2020-09-10 | 2021-02-12 | 大连重工环保工程有限公司 | Coal box smoke dust collecting device of tamping coke oven coal charging car |
-
2020
- 2020-09-10 CN CN202010949272.1A patent/CN111961482B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001003061A (en) * | 1999-06-18 | 2001-01-09 | Sumitomo Metal Ind Ltd | Apparatus for cleaning coal charging opening of coke oven |
| JP2006077222A (en) * | 2004-09-09 | 2006-03-23 | Shinwa Corp | Dust collector of coke oven |
| CN101845309A (en) * | 2010-06-22 | 2010-09-29 | 四川达兴能源股份有限公司 | Coal charging and dust removing device at tamping coke oven machine side |
| CN104059679A (en) * | 2014-07-10 | 2014-09-24 | 攀钢集团西昌钢钒有限公司 | Coaling dust exhaust system for stamp-charging coke ovens |
| CN110172353A (en) * | 2019-07-12 | 2019-08-27 | 大连华锐重工焦炉车辆设备有限公司 | Tamping coke furnace machinery pusher side dust collection for charging system and its operating procedure |
| CN211420053U (en) * | 2019-12-02 | 2020-09-04 | 中冶焦耐(大连)工程技术有限公司 | Tamping coke oven coal-charging smoke dust treatment system |
| CN111303910A (en) * | 2020-03-12 | 2020-06-19 | 太原重工股份有限公司 | Tamping coke oven coal-charging smoke dust collecting system |
| CN212532854U (en) * | 2020-09-10 | 2021-02-12 | 大连重工环保工程有限公司 | Coal box smoke dust collecting device of tamping coke oven coal charging car |
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| CN111961482B (en) | 2024-02-06 |
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