CN212051237U

CN212051237U - Flue gas diffusing guide device for riser of totally-closed or semi-closed coke oven

Info

Publication number: CN212051237U
Application number: CN202020174222.6U
Authority: CN
Inventors: 谢桂龙; 樊响; 郭明威; 闫武装; 周景伟; 宋玉才; 赵伟洁; 许艳梅; 邓志鹏; 郭凯悦; 孙蕊
Original assignee: Zhongye Geotechnical Engineering Consulting Co ltd; Beijing Metallurgical Equipment Research Design Institute Co Ltd
Current assignee: Zhongye Geotechnical Engineering Consulting Co ltd; Beijing Metallurgical Equipment Research Design Institute Co Ltd
Priority date: 2020-02-16
Filing date: 2020-02-16
Publication date: 2020-12-01
Anticipated expiration: 2030-02-16

Abstract

The utility model discloses a flue gas diffusing guide device of an ascending pipe of a totally-enclosed or semi-enclosed coke oven, which comprises a middle guide component and a roof guide component, wherein the middle guide component comprises a middle top suction cover and a middle smoke guide pipe, an interval is arranged between the middle top suction cover and the top of the ascending pipe, and the top of the ascending pipe is positioned in the covering area of the middle top suction cover; the roof guide assembly comprises a roof cover and an outlet pipe, and the middle smoke guide pipe extends into the roof cover. The utility model discloses in adopt the mode of big or small cover allies oneself with usefulness, solve the tedge smoke and dust and collect the problem. The large cover is a roof cover and is used for collecting scattered smoke and dust overflowing from the machine side of the coke oven and ventilating the sealed back oven top at ordinary times, and is used for collecting and guiding out crude gas in an ascending pipe during accidents. The small cover is the middle top suction cover, can rapidly guide the smoke generated by normal raw gas combustion or accident diffusion of the ascending pipe to the roof cover, and solves the problem that the effect of collecting the smoke diffused by the ascending pipe is poor when the roof cover is far away from the ascending pipe dissipation port.

Description

Flue gas diffusing guide device for riser of totally-closed or semi-closed coke oven

Technical Field

The utility model relates to the technical field of the treatment of scattered smoke dust in the coking process, in particular to a smoke guide device scattered by an ascending pipe of a totally-enclosed or semi-enclosed coke oven.

Background

During the coking production process, a large amount of smoke dust is generated at the positions of a machine side, a coke side furnace door, a furnace top coal charging hole, a fire observation hole, an ascending pipe dispersion port, a coke quenching tank car filled with coke and the like. Although the existing dust removal technology treats important dust source points such as a coal charging hole at the top of a furnace, a furnace door at the side of a machine coke and the like, the dust collection effect is not ideal due to the problems of limited space of a dust removal cover, limited dust removal air volume and the like, and the latest environmental protection requirement cannot be met. And part of the scattered smoke is not collected and treated, and is still in unorganized emission. Therefore, a novel and reasonable treatment technology is needed to be developed to solve the problem of the unorganized emission of smoke dust in the coke oven body area.

The main flow process route of the prior art is to perform semi-closed and fully-closed process on the coke oven body region, arrange dust collection measures such as a dust collection cover and a dust collection pipeline at the top, and arrange dust removal facilities such as a dust remover, a fan, a chimney and the like at the tail end. As shown in the following patents, CN 107828430 a "a dust hood for coke oven", CN 109666487 a "a dust collection device and method for closing and ventilating coke oven", CN 109021988A "a side support totally-enclosed smoke collection system and method for collecting escaped smoke dust", and CN 208980654U "a totally-enclosed collection and treatment device for escaped smoke dust of coke oven".

However, the biggest difficulty in closing the coke oven is how to deal with the problem of accident dispersion of the riser. In the normal coking process, raw coke oven gas generated by the carbonization chamber is guided into a gas collecting pipe through a rising pipe to be removed to a blast cooling area; and (3) opening a water sealing cover at the top of the ascending pipe from the end of coking to before pushing coke, and discharging the residual raw coke gas in the carbonization chamber to the atmosphere after burning. When sudden faults such as power failure of a cooling blower, ammonia water supply interruption and the like occur in a coke oven control system, the pressure of a gas collection system is too high, and a water sealing cover of an ascending pipe can be forcedly pushed open to spray high-temperature raw coke oven gas or even flame. At the moment, the combustible gas concentration of the local closed area is high, the smoke temperature is high, and after the coke oven top is closed and covered, the part of crude gas is discharged in time, so that the deflagration danger exists. In view of such working conditions, some solutions have been proposed in the prior patents, such as patent CN 109021985 a "a riser structure and working method for protecting dust hood of coke oven" and patent CN 109054871 a "a linkage type fire guiding device and working method for riser of coke oven". In the former (patent CN 109021985A), the existing ascending pipe is heightened and extended to the outside of the closed cover, and the crude gas of the ascending pipe is directly led out of the closed or semi-closed space, thereby achieving the purpose of protecting the dust hood. However, the method still does not deal with the smoke generated by burning the ascending pipe in the normal coking process. After the ascending pipe is heightened, operators on the furnace top cannot observe the flame condition when the ascending pipe is subjected to diffusion combustion before coking, and the existing production operation is greatly influenced. In the latter (patent CN 109054871 a), a top suction hood is arranged right above the existing ascending pipe, each ascending pipe corresponds to one top suction hood, an outlet pipeline of the top suction hood is communicated to the outside of the closed hood, and when the flue gas diffused by the ascending pipes overflows to the lower part of the top suction hood, the top suction hood and the outlet pipeline lead out the diffused flue gas (containing flame) to the atmosphere through the chimney effect and discharge. Although the method does not affect the observation of flame condition of the ascending pipe during the diffusion combustion before coking by furnace top operators, the method still does not collect and process smoke generated by the diffusion combustion in the normal coking process. Moreover, the provision of a top suction hood and a blow-off line per riser and the application of this part of the load to the coke oven enclosure in its entirety presents a significant challenge to the specific design and implementation of the enclosure and its supporting structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide one kind and can realize that the tedge accident diffuses the quick derivation from sealing or semi-closed coke oven of flue gas, ensure the security of closed area, can solve again that the smoke and dust that the burning produced diffuses in the normal coking process collects the totally closed or semi-closed coke oven of handling problem's tedge diffuses flue gas guiding device.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a flue gas guiding device is diffused to tedge of totally closed or semi-closed coke oven, include and set gradually from bottom to top middle part guide assembly and the roof guide assembly above the tedge, middle part guide assembly includes middle part top suction hood and middle part smoke guide pipe that connects gradually from bottom to top, middle part smoke guide pipe sets up on smoke guide pipe support, there is the interval between middle part top suction hood and the top of tedge, the area covered of middle part top suction hood is greater than the top diameter of tedge, and the top of tedge is located the area covered of middle part top suction hood; the roof guide assembly comprises a roof cover and an outlet pipe which are sequentially connected from bottom to top, the middle smoke guide pipe extends into the roof cover, the outlet pipe is arranged on the roof, and the outlet end penetrates through the roof to be communicated with the outside; a dust removal branch pipe is arranged on the outlet pipe, and a switching valve is arranged at the outlet end of the dust removal branch pipe; and a bleeding valve is arranged at the outlet end of the outlet pipe.

Preferably, the middle top suction hood is detachably arranged on the middle smoke guide pipe.

Preferably, the roof cover and the outlet pipe and the dust removing branch pipe are connected by welding; the middle smoke guide pipe is connected with the smoke guide pipe bracket through pipe bracket welding or bolts.

Preferably, a net rack is arranged on the roof, and the outlet pipe is connected with the net rack in a welding mode through a support hanger.

Preferably, the coverage area of the roof cover is larger than that of the middle roof suction cover.

Preferably, 5-10 middle smoke guide pipes can extend into each roof cover.

Preferably, the middle top suction cover and the roof cover are both of a big-end and small-end type, namely, the sizes of the covers are gradually reduced from bottom to top; the roof cover is higher than the coal car.

Preferably, two ends of the smoke guide pipe bracket are respectively connected with the extension bracket c and the extension bracket d in a welding mode or in a bolt mode; and the extension bracket c and the extension bracket d are respectively arranged on the end platform resistance wall upright a and the middle platform resistance wall upright b.

Preferably, the guiding device is used for building refractory materials or coating refractory paint at a position which is easy to contact high-temperature smoke or flame.

Preferably, the distance between the middle suction hood and the top of the riser pipe is greater than the height required for opening a water seal cover arranged at the top of the riser pipe.

The utility model discloses following beneficial effect has been gained for prior art:

the utility model provides a flue gas guiding device is diffused to tedge of totally closed or semi-closed coke oven has following beneficial effect: 1. the smoke dust collection problem of the ascending pipe is solved by adopting a mode of combining a large cover and a small cover. The large cover is a roof cover and is used for collecting scattered smoke and dust overflowing from the machine side of the coke oven and ventilating the sealed back oven top at ordinary times, and is used for collecting and guiding out crude gas in an ascending pipe during accidents. The small cover, namely the middle top suction cover, is close to the dispersion port of the ascending pipe, has good upward smoke guiding effect, can quickly guide smoke generated by normal raw gas combustion or accident dispersion of the ascending pipe to the roof cover, and solves the problem that the roof cover has poor effect of collecting the smoke overflowing and dispersed from the ascending pipe far away from the dispersion port of the ascending pipe; 2. the middle top suction hood and the smoke guide pipe are movably connected by flange bolts and the like, are easy to disassemble or move, do not influence the maintenance of the ascending pipe, and even can use a smoke guide pipe bracket as an auxiliary lifting point; 3. the middle top suction cover is not directly connected with the ascending pipe, and is higher than the height required by opening the water seal cover of the ascending pipe away from the ascending pipe, so that the existing operation habit is not influenced; 4. the load of the middle top suction hood and the smoke guide pipe falls on the smoke guide pipe bracket, and the load of the smoke guide pipe bracket falls on the resisting wall upright columns at the two ends of the coke oven, so that the load of a closed workshop (or a closed hood) of the coke oven is not increased. 5. The outlet pipeline of the roof cover is divided into two paths, and the collection and treatment of the normally diffused flue gas and the emergency discharge of the accident diffused raw coke oven gas are realized through the switching of the valve.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural view of an embodiment of a flue gas diffusing and dust collecting device of an ascending pipe for a totally-enclosed or semi-enclosed coke oven (without a net rack);

FIG. 2 is a right side view of a flue gas diffusing and dust collecting apparatus of an ascending pipe for a fully or semi-closed coke oven;

FIG. 3 is a front view of a flue gas diffusing and dust collecting device of a rising pipe for a fully or semi-closed coke oven;

FIG. 4 is a top view of a flue gas diffusing and dust collecting device of a rising pipe for a fully closed or semi-closed coke oven.

Wherein, 1, the coke oven; 2. a riser pipe; 3. sealing the water cover; 4. a gas collecting pipe; 5. a middle top suction cover; 6. a middle smoke guide pipe; 7. a smoke guide pipe bracket; 8. a roof cover; 9. an outlet pipe; 10. a dust removal branch pipe; 11. a switching valve; 12. a bleed valve; 13. a roof; 14. a net frame; 15. loading a coal car; a. end stand resistance wall columns; b. the counter resistance wall column; c. the end table resisting the wall column extension bracket; d. the counter is against the wall stud extension bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1-4, the utility model provides a flue gas guiding device for the ascending pipe 2 of a totally-enclosed or semi-enclosed coke oven 1, which comprises a middle guiding component and a roof guiding component which are sequentially arranged above the ascending pipe 2 from bottom to top, wherein the middle guiding component comprises a middle top suction hood 5 and a middle smoke guiding pipe 6 which are sequentially connected from bottom to top, the middle smoke guiding pipe 6 is arranged on a smoke guiding pipe bracket 7, an interval exists between the middle top suction hood 5 and the top of the ascending pipe 2, the coverage area of the middle top suction hood 5 is larger than the diameter of the top of the ascending pipe 2, and the top of the ascending pipe 2 is positioned in the coverage area of the middle top suction hood 5; the roof guide assembly comprises a roof cover 8 and an outlet pipe 9 which are sequentially connected from bottom to top, the middle smoke guide pipe 6 extends into the roof cover 8, the outlet pipe 9 is arranged on the roof, and the outlet end penetrates through the roof to be communicated with the outside; a dust removal branch pipe 10 is arranged on the outlet pipe 9, and a switching valve 11 is arranged at the outlet end of the dust removal branch pipe 10; the outlet end of the outlet pipe 9 is provided with a bleed valve 12.

The smoke guide pipe support 7 is directly fixed on the ground or fixedly connected through other parts, so that the positions of the middle top suction hood 5 and the middle smoke guide pipe 6 are fixed, for example, the bearing of the middle top suction hood 5 and the middle smoke guide pipe 6 falls on the smoke guide pipe support 7, the smoke guide pipe support 7 adopts two non-standard HN-type steel as a simply supported beam structure with two fixed ends, the span of the smoke guide pipe support 7 is from an end platform resisting wall upright to a middle platform resisting wall upright of the coke oven 1, and the support is erected at the position of the original resisting wall upright as two end uprights of the smoke guide pipe support 7; the middle top suction hood 5 is a round bell mouth with a big lower part and a small upper part, and the size of the lower mouth does not influence the advancing of the coal charging car 15; in order to improve the collection effect and efficiency of the flue gas, the middle top suction hood 5 and the ascending pipe 2 are coaxially arranged; the main object covered by the middle top suction hood 5 is a water seal cover 3 positioned at the top of the ascending pipe 2, and the ascending pipe 2 is also connected with a gas collecting pipe 4, which is common knowledge in the field; a closed or semi-closed coke oven 1 factory building roof 13 is arranged above the roof cover 8, the factory building adopts a double-layer grid 14 structure form, the roof 13 takes root on a lower-layer grid structure, an outlet pipe 9 connected with the roof cover 8 passes through a gap between the roof 13 and the grid 14 to enter an upper-layer grid, and when the dust removal work is carried out, the switching valve 11 is opened, and the bleeding valve 12 is closed; when an accident occurs, the bleeding valve 12 is opened, namely, the bleeding valve 12 of the outlet pipe 9 and the switch of the switching valve 11 of the dust removing branch pipe 10 are switched to realize the switching between the accident bleeding and the dust removing.

In order to facilitate the manufacturing and installation in the early stage and the maintenance in the later stage, the middle top suction hood 5 of the utility model is detachably arranged on the middle smoke guide pipe 6; wherein, the middle top suction hood 5 and the middle smoke guide pipe 6 adopt movable connection modes such as flange bolt connection and the like, so that the disassembly or the displacement is convenient, and the maintenance space of the ascending pipe 2 is conveniently vacated.

In order to improve the stability of the connecting structure, the roof cover 8 and the outlet pipe 9 and the dust removing branch pipe 10 are connected by welding; the middle smoke guide pipe 6 is connected with the smoke guide pipe bracket 7 through pipe bracket welding or bolts.

The utility model discloses be provided with rack 14 on the well roof, outlet pipe 9 is through a gallows and rack 14 welded connection.

In order to make the roof cover 8 the utility model discloses the area covered of well roof cover 8 is greater than the area covered of middle part top suction hood 5.

In the utility model, 5-10 middle smoke guide pipes 6 can be inserted into each roof cover 8; further, the roof cover 8 is a square bell mouth plus a small section of straight section, the length is the sum of the maximum distance and the minimum center distance of the 5-10 corresponding ascending pipes 2, the width is 3-4 m, and the roof cover 8 is higher than the coal charging car 15 and the marking height thereof.

In the utility model, the middle top suction hood 5 and the roof hood 8 are both of big and small head type, namely, the size of the hood is gradually reduced from bottom to top; the roof cover 8 is arranged at a height higher than the height of the coal charging car 15.

The two ends of the middle smoke guide pipe bracket 7 of the utility model are respectively welded or bolted with the extension bracket c and the extension bracket d; and the extension bracket c and the extension bracket d are respectively arranged on the end platform resistance wall upright a and the middle platform resistance wall upright b.

In order to prolong the service life, the position of the guiding device in the utility model, which is easy to contact with high temperature smoke or flame, is built with refractory materials or coated with refractory paint; specifically, refractory materials are built inside the middle top suction hood 5 and the smoke guide pipe, and the middle top suction hood 5, the outer part of the smoke guide pipe, the smoke guide pipe bracket 7, the roof cover 8, the local roof 13 corresponding to the top of the ascending pipe 2, the net rack 14 and other parts are coated with refractory coatings.

In order to facilitate the maintenance work, the distance between the middle top suction hood 5 and the top of the ascending pipe 2 is greater than the height required for opening the water seal cover 3 arranged at the top of the ascending pipe 2; the middle ceiling hood 5 is provided in a detachable structure as described above.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A flue gas diffusing guide device of an ascending pipe of a totally-closed or semi-closed coke oven is characterized in that: the device comprises a middle guide assembly and a roof guide assembly which are sequentially arranged above an ascending pipe from bottom to top, wherein the middle guide assembly comprises a middle top suction cover and a middle smoke guide pipe which are sequentially connected from bottom to top, the middle smoke guide pipe is arranged on a smoke guide pipe bracket, an interval is formed between the middle top suction cover and the top of the ascending pipe, the coverage area of the middle top suction cover is larger than the diameter of the top of the ascending pipe, and the top of the ascending pipe is positioned in the coverage area of the middle top suction cover; the roof guide assembly comprises a roof cover and an outlet pipe which are sequentially connected from bottom to top, the middle smoke guide pipe extends into the roof cover, the outlet pipe is arranged on the roof, and the outlet end penetrates through the roof to be communicated with the outside; a dust removal branch pipe is arranged on the outlet pipe, and a switching valve is arranged at the outlet end of the dust removal branch pipe; and a bleeding valve is arranged at the outlet end of the outlet pipe.

2. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: the middle top suction hood is detachably arranged on the middle smoke guide pipe.

3. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: the roof cover and the outlet pipe and the dust removal branch pipe are connected by welding; the middle smoke guide pipe is connected with the smoke guide pipe bracket through pipe bracket welding or bolts.

4. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1 or 3, wherein: be provided with the rack on the roof, the outlet pipe pass through a gallows with rack welded connection.

5. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: the covering area of the roof cover is larger than that of the middle top suction cover.

6. The ascending tube fume emission guiding device of the totally or semi-enclosed coke oven according to claim 5, wherein: 5-10 middle smoke guide pipes can extend into each roof cover.

7. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1 or 6, wherein: the middle top suction cover and the roof cover are both of a big-end type, namely, the sizes of the covers are gradually reduced from bottom to top; the roof cover is higher than the coal car.

8. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: two ends of the smoke guide pipe bracket are respectively connected with the extending bracket c and the extending bracket d in a welding way or in a bolt way; and the extension bracket c and the extension bracket d are respectively arranged on the end platform resistance wall upright a and the middle platform resistance wall upright b.

9. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: and building refractory materials or coating refractory paint at the position which is easy to contact high-temperature smoke or flame in the guiding device.

10. The ascending tube flue gas emission guiding device of the totally or semi-enclosed coke oven according to claim 1, wherein: the distance between the middle top suction hood and the top of the ascending pipe is greater than the height required for opening a water sealing cover arranged at the top of the ascending pipe.