CN219586044U - Dry quenching boiler bottom flue ash removal system - Google Patents
Dry quenching boiler bottom flue ash removal system Download PDFInfo
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- CN219586044U CN219586044U CN202320339391.4U CN202320339391U CN219586044U CN 219586044 U CN219586044 U CN 219586044U CN 202320339391 U CN202320339391 U CN 202320339391U CN 219586044 U CN219586044 U CN 219586044U
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Abstract
The utility model relates to the technical field of coke dry quenching boilers, in particular to a flue dust removal system at the bottom of a coke dry quenching boiler. The flue at the bottom of the dry quenching boiler is connected with a first ash bin through an ash discharging pipeline, and the first ash bin is connected with a second ash bin through a conveying device; a flue material level alarm system and a scraper machine are arranged on a flue at the bottom of the dry quenching boiler, a first ash bin is provided with an ash bin material level alarm system, and an ash discharging valve is arranged on an ash discharging pipeline; when the flue material level alarm system detects high material level of the flue, the scraper and the ash discharge valve are opened to discharge the coke powder dust into the first ash bin; when the ash bin material level alarm system detects the high material level of the first ash bin, the conveying device is started to convey the coke powder dust to the second ash bin. The utility model can remove ash from the flue at the bottom of the coke dry quenching boiler and convey the ash out for unified treatment, thereby being beneficial to environmental protection.
Description
Technical Field
The utility model relates to the technical field of coke dry quenching boilers, in particular to a flue dust removal system at the bottom of a coke dry quenching boiler.
Background
The dry quenching process is a quenching process method which uses inert gas to cool red Jiao Jiangwen relative to wet quenching. The dry quenching process originates from Switzerland, a plurality of developed countries in the 40 th century of 20 begin to research and develop dry quenching technology, and goes into the 60 th year, and the soviet union makes breakthrough progress in the aspect of the dry quenching technology, so that continuous and stable production is realized; in the 70 s, the dry quenching technology is introduced from the soviet union at first in japan with relatively poor resources, and the device is effectively improved in the aspects of large-scale, automatic control and environmental protection; in the 80 s, japanese dry quenching technology is introduced into the steel-making one-term engineering in China, and by 2021, the dry quenching device of put-to-production operation in China reaches more than 350 sets, wherein the coking dry quenching rate of key steel enterprises is improved from less than 30% to 90% in 2005.
Along with the shortage of energy supply, the prices of petroleum, natural gas, coal and other energy sources rise, and the energy consumption cost accounts for about 30% of the steel production cost; in the combined iron and steel enterprises, the energy consumption of the three working procedures of sintering, coking and iron making is more than 50% of the total energy consumption, and the dry quenching at present becomes one of the largest energy-saving and environment-friendly technologies.
The dry quenching boiler is an important unit in dry quenching, and the stable and safe operation of the dry quenching boiler is important. However, under the influence of a dry quenching process, the coke powder dust can be brought into a dry quenching boiler from the inside of the dry quenching furnace along with the flow of circulating gas, and finally deposited on a flue at the bottom of the dry quenching boiler, so that the flow area of the flue is reduced, the flow resistance is increased and the stable operation of the boiler is influenced along with the excessive deposition of the coke powder dust. Therefore, manual cleaning is required regularly, the time consumption is long, the labor intensity is high, the cleaning efficiency is low, in addition, the working environment of the flue at the bottom of the coke dry quenching boiler is severe, the problems of dust emission and the like exist, the environment pollution is caused, and the body health of operators is seriously endangered.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a dry quenching boiler bottom flue ash removal system which is used for removing ash from the dry quenching boiler bottom flue and conveying the ash out for uniform treatment, thereby being beneficial to environmental protection.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the bottom flue of the dry quenching boiler is connected with a first ash bin through an ash discharging pipeline, and the first ash bin is connected with a second ash bin through a conveying device; a flue material level alarm system and a scraper machine are arranged on a flue at the bottom of the dry quenching boiler, a first ash bin is provided with an ash bin material level alarm system, and an ash discharging valve is arranged on an ash discharging pipeline; when the flue material level alarm system detects high material level of the flue, the scraper and the ash discharge valve are opened to discharge the coke powder dust into the first ash bin; when the ash bin material level alarm system detects the high material level of the first ash bin, the conveying device is started to convey the coke powder dust to the second ash bin.
As a further improvement of the utility model: the conveying device is a pneumatic conveyor.
As a further improvement of the utility model: the ash discharge valve is a rotary seal ash discharge valve.
As a further improvement of the utility model: the ash discharging pipeline is vertically arranged, the first ash bin is positioned at the bottom of the flue at the bottom of the dry quenching boiler, the top end of the ash discharging pipeline is connected with the flue at the bottom of the dry quenching boiler, and the bottom end of the ash discharging pipeline is connected with the first ash bin.
As a further improvement of the utility model: the second ash bin is a secondary dust remover ash bin.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model provides a dry quenching boiler bottom flue, which is provided with a flue level alarm system, when the flue level alarm system detects that the flue level is higher than a set value, a scraper is started to collect dust in a dust discharging pipeline in a concentrated manner, and the dust is uniformly discharged to a dry quenching boiler bottom ash bin through a rotary sealing ash discharging valve arranged on the dust discharging pipeline. An ash bin material level alarm system is arranged at the ash bin at the bottom of the dry quenching boiler, when the ash bin material level alarm system detects that the ash bin material level is higher than a set value, a pneumatic conveyor is started, and the coke powder dust is conveyed to an ash bin of a secondary dust remover through the pneumatic conveyor to be treated uniformly. The system is environment-friendly, and can avoid the problem of manual ash removal caused by excessive accumulated ash in the flue. Need not to regularly carry out manual cleaning, cleaning efficiency is high, has guaranteed operating personnel's healthy.
2. The conveying device is a pneumatic conveyor. The pneumatic conveyor can carry out horizontal, inclined and vertical conveying and also can form a space conveying line. The conveyor has the advantages of large conveying capacity, long conveying distance, simple structure, few transmission parts, convenient maintenance, small occupied area and available space.
3. The utility model relates to an ash discharge valve which is a rotary seal ash discharge valve. The sealing performance is good, the wear resistance is strong, the high temperature resistance, the switch has no blocking phenomenon, no ash blocking or deposition phenomenon and the service life is long.
4. The second ash bin is a secondary dust remover ash bin. And (5) delivering the coke powder dust to an ash bin of a secondary dust remover for unified treatment.
5. The ash discharging pipeline is vertically arranged, so that smooth discharging is ensured.
Drawings
Fig. 1 is a schematic structural diagram and a process flow diagram of an exemplary embodiment of the present utility model.
FIG. 2 is a diagram of a flue level sensor and control circuit of the flue level warning system of the present utility model.
Fig. 3 is a circuit diagram of the motor control of the scraper machine according to the present utility model.
Fig. 4 is a circuit diagram of the motor control of the rotary seal dust valve of the present utility model.
Fig. 5 is a diagram of an ash bin level sensor and control circuit of the ash bin level alarm system of the utility model.
Fig. 6 is a circuit diagram of the motor control of the pneumatic conveyor of the present utility model.
In the figure: 1-a bottom flue of a dry quenching boiler 2-a scraper machine 3-an ash discharging pipeline 4-a rotary seal ash discharging valve 5-a bottom ash bin 6-a flue material level alarm system 7-an ash bin material level alarm system 8-a pneumatic conveyor 9-a secondary dust remover ash bin of the dry quenching boiler
Detailed Description
Embodiments of the present utility model will be described in further detail below with reference to the attached drawings and examples, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Examples:
as shown in fig. 1-6, the utility model provides a bottom flue ash removal system of a dry quenching boiler, which comprises a bottom flue 1 of the dry quenching boiler, a scraper machine 2, an ash discharging pipeline 3, a rotary seal ash discharging valve 4, a bottom ash bin 5 of the dry quenching boiler, a flue material level alarm system 6, an ash bin material level alarm system 7, a pneumatic conveyor 8 and a secondary dust remover ash bin 9.
The ash discharging pipeline 3 is vertically arranged, the ash bin 5 at the bottom of the dry quenching boiler is positioned at the bottom of the flue 1 at the bottom of the dry quenching boiler, the top end of the ash discharging pipeline 3 is connected with the flue 1 at the bottom of the dry quenching boiler, and the bottom end of the ash discharging pipeline 3 is connected with the ash bin 5 at the bottom of the dry quenching boiler. The ash discharging pipeline 3 is vertically arranged, so that smooth discharging is ensured.
The rotary sealing ash discharging valve 4 is arranged on the ash discharging pipeline 3, and the rotary sealing ash discharging valve 4 has the characteristics of good sealing performance, strong wear resistance, high temperature resistance, no blocking phenomenon of a switch, no blocking or depositing phenomenon and long service life.
The scraper 2 and a flue level sensor S1 of a flue level alarm system 6 are arranged in a flue 1 at the bottom of the coke dry quenching boiler. An ash bin level sensor S2 of the ash bin level alarm system 7 is arranged in an ash bin 5 at the bottom of the coke dry quenching boiler.
The ash bin 5 at the bottom of the coke dry quenching boiler is connected with the ash bin 9 of the secondary dust remover through a pneumatic conveyor 8. The pneumatic conveyor 8 can carry out horizontal, inclined and vertical conveying and can also form a space conveying line. The conveyor has the advantages of large conveying capacity, long conveying distance, simple structure, few transmission parts, convenient maintenance, small occupied area and available space.
The working process of the utility model is as follows:
when the flue material level sensor S1 of the flue material level alarm system 6 detects that the material level of the flue 1 at the bottom of the dry quenching boiler is higher than a set value, the relay coil J1 is attracted, the auxiliary contacts J2 and J3 of the relay are closed, the three-phase contacts C1 and C2 are closed by energizing the contactor coils C1 and C2, the scraper motor and the rotary sealing ash discharge valve motor are energized to operate, the scraper 2 collects coke dust in a concentrated manner near the ash discharge pipeline 3, and the coke dust is uniformly discharged to the ash bin 5 at the bottom of the dry quenching boiler through the rotary sealing ash discharge valve 4 arranged on the ash discharge pipeline 3. And otherwise, when the flue level sensor S1 detects that the flue level 1 at the bottom of the dry quenching boiler is lower than a set value, the scraper motor and the rotary sealing ash discharging valve motor are closed.
When the main switch H3 is closed and the ash bin level sensor S2 of the ash bin level alarm system 7 detects that the ash bin 5 level at the bottom of the dry quenching boiler is higher than a set value, the relay coil J4 is attracted, the relay auxiliary contact J5 is closed, the contactor coil C3 is electrified to enable the three-phase contact C3 to be closed, the pneumatic conveyor 8 is electrified to operate, and the coke powder dust is conveyed to the ash bin 9 of the secondary dust remover through the pneumatic conveyor 8 to be treated uniformly. Otherwise, when the ash bin level sensor S2 detects that the ash bin level 5 at the bottom of the dry quenching boiler is lower than a set value, the pneumatic conveyor 8 is closed.
The utility model removes ash from the flue at the bottom of the coke dry quenching boiler and conveys the ash out for unified treatment, thereby being beneficial to environmental protection. The system is airtight, has little pollution to the environment, and can avoid the problem of manual ash removal caused by excessive ash accumulation in the flue. Need not to regularly carry out manual cleaning, cleaning efficiency is high, has guaranteed operating personnel's healthy.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The utility model provides a dry quenching boiler bottom flue ash handling system which characterized in that: the flue at the bottom of the dry quenching boiler is connected with a first ash bin through an ash discharging pipeline, and the first ash bin is connected with a second ash bin through a conveying device; a flue material level alarm system and a scraper machine are arranged on a flue at the bottom of the dry quenching boiler, a first ash bin is provided with an ash bin material level alarm system, and an ash discharging valve is arranged on an ash discharging pipeline; when the flue material level alarm system detects high material level of the flue, the scraper and the ash discharge valve are opened to discharge the coke powder dust into the first ash bin; when the ash bin material level alarm system detects the high material level of the first ash bin, the conveying device is started to convey the coke powder dust to the second ash bin.
2. The dry quenching boiler bottom flue dust removal system as claimed in claim 1, wherein: the conveying device is a pneumatic conveyor.
3. The dry quenching boiler bottom flue dust removal system as claimed in claim 1, wherein: the ash discharge valve is a rotary seal ash discharge valve.
4. The dry quenching boiler bottom flue dust removal system as claimed in claim 1, wherein: the ash discharging pipeline is vertically arranged, the first ash bin is positioned at the bottom of the flue at the bottom of the dry quenching boiler, the top end of the ash discharging pipeline is connected with the flue at the bottom of the dry quenching boiler, and the bottom end of the ash discharging pipeline is connected with the first ash bin.
5. The dry quenching boiler bottom flue dust removal system as claimed in claim 1, wherein: the second ash bin is a secondary dust remover ash bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339391.4U CN219586044U (en) | 2023-02-28 | 2023-02-28 | Dry quenching boiler bottom flue ash removal system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320339391.4U CN219586044U (en) | 2023-02-28 | 2023-02-28 | Dry quenching boiler bottom flue ash removal system |
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| CN219586044U true CN219586044U (en) | 2023-08-25 |
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| CN202320339391.4U Active CN219586044U (en) | 2023-02-28 | 2023-02-28 | Dry quenching boiler bottom flue ash removal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116179228A (en) * | 2023-02-28 | 2023-05-30 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching boiler bottom flue ash removal system |
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- 2023-02-28 CN CN202320339391.4U patent/CN219586044U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116179228A (en) * | 2023-02-28 | 2023-05-30 | 中冶焦耐(大连)工程技术有限公司 | Dry quenching boiler bottom flue ash removal system |
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