CN110699096A - Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler - Google Patents
Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler Download PDFInfo
- Publication number
- CN110699096A CN110699096A CN201911059317.1A CN201911059317A CN110699096A CN 110699096 A CN110699096 A CN 110699096A CN 201911059317 A CN201911059317 A CN 201911059317A CN 110699096 A CN110699096 A CN 110699096A
- Authority
- CN
- China
- Prior art keywords
- coke powder
- dry quenching
- dust remover
- coke
- circulating gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/04—Carbon-containing material
- F27M2001/045—Coke
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a dust removal device for coke dry quenching and a method for improving steam yield of a coke dry quenching boiler, wherein circulating gas flows from a coke dry quenching furnace side to a coke dry quenching boiler side through a dust remover, and most coke powder in the circulating gas is settled down under the action of gravity in the dust remover; the settled coke powder falls into a coke powder bin below; the coke powder collected by the coke powder bin enters the combustor and is fully combusted in the combustor, and hot flue gas generated by combustion is introduced into the dust remover through the coke powder bin or is introduced into the dust remover through a hot flue gas pipeline outside the combustor; the hot flue gas brings a large amount of heat into the circulating gas, so that the subsequent dry quenching boiler generates more steam, thereby obtaining greater economic benefit.
Description
Technical Field
The invention relates to the technical field of dry quenching, in particular to a dust removal device for dry quenching and a method for improving the steam yield of a dry quenching boiler.
Background
In the process of the dry quenching process, red coke is loaded from the top of a dry quenching furnace, low-temperature inert gas is blown into a red coke layer of a cooling section of the dry quenching furnace by a circulating fan to absorb sensible heat of the red coke, the cooled coke is discharged from the bottom of the dry quenching furnace, high-temperature inert gas discharged from an annular flue of the dry quenching furnace flows through a dry quenching boiler to carry out heat exchange, steam is generated by the dry quenching boiler, the cooled inert gas is blown into the dry quenching furnace again by the circulating fan, and the inert gas is recycled in a closed system. In general, high-temperature circulating gas is separated from coarse-particle coke powder by a primary dust remover and then enters a dry quenching boiler for heat exchange, low-temperature circulating gas with the temperature reduced to about 160 ℃ is discharged from the dry quenching boiler, fine-particle coke powder is further separated by a secondary dust remover and then is sent to a feed water preheater by a circulating fan to be cooled to about 130 ℃, and then the cooled fine-particle coke powder enters the dry quenching boiler for recycling.
The primary dust remover is used for separating large-particle coke powder in the circulating gas, and reducing the scouring abrasion of the circulating gas to a boiler pipeline. At present, the coke powder separated from a primary dust remover is mainly used for sintering, blending coking, preparing coking dust-removing ash-based active carbon and the like, but the separated coke powder has low quality and high energy consumption or is limited by the technical level, so the process has limited economic benefits and is easy to cause environmental pollution.
Disclosure of Invention
The invention provides a dust removal device for dry quenching and a method for improving steam yield of a dry quenching boiler.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dust removal device for dry quenching comprises a dust remover, a coke powder bin, a burner and an ash discharge valve which are sequentially connected from top to bottom; a circulating gas inlet is formed in one side of the top of the dust remover, a circulating gas outlet is formed in the other side of the top of the dust remover, the circulating gas inlet is connected with a circulating gas outlet of the dry quenching furnace, and the circulating gas outlet is connected with a circulating gas inlet of the dry quenching boiler; the bottom of the dust remover is provided with a coke powder outlet which is connected with a coke powder inlet at the top of the coke powder bin; a coke powder outlet at the bottom of the coke powder bin is connected with a coke powder inlet at the top of the burner, a combustion-supporting air inlet and a burner nozzle are arranged at one side of the burner, a hot flue gas outlet is arranged at the other side of the burner, and the hot flue gas outlet is connected with a dust remover through a hot flue gas pipeline; an ash discharge valve is arranged at an ash discharge port at the bottom of the combustor.
The dust remover is a gravity settling dust remover.
And a coke powder outlet of the dust remover is connected with a coke powder inlet of the coke powder bin through a flange I.
And a coke powder outlet of the coke powder bin is connected with a coke powder inlet of the combustor through a second flange.
And the ash discharge port of the combustor is connected with the ash discharge valve through a third flange.
And the outer side of the hot flue gas pipeline is provided with a heat insulation layer.
A method for improving the steam yield of a coke dry quenching boiler comprises the steps that circulating gas flows from a coke dry quenching furnace side to a coke dry quenching boiler side through a dust remover, and most coke powder in the circulating gas is settled down under the action of gravity in the dust remover; the settled coke powder falls into a coke powder bin below; the coke powder collected by the coke powder bin enters the combustor and is fully combusted in the combustor, and hot flue gas generated by combustion is introduced into the dust remover through the coke powder bin or is introduced into the dust remover through a hot flue gas pipeline outside the combustor; the hot flue gas brings a large amount of heat into the circulating gas, so that a subsequent dry quenching boiler generates more steam; the ash discharge valve below the combustor is used for controlling the discharge speed of ash, and the ash is utilized to generate a sealing effect to prevent air suction.
Compared with the prior art, the invention has the beneficial effects that:
1) the coke powder separated by settling from the dust remover can be directly and fully combusted, and a large amount of generated hot flue gas is introduced into the circulating gas, so that the dry quenching boiler generates more steam, the process path is short, the heat recovery efficiency is high, and greater economic benefit is obtained;
2) the load of the subsequent treatment of the coke powder is reduced, the dissipation of the coke powder is reduced, and the method is economic and environment-friendly.
Drawings
FIG. 1 is a schematic structural diagram of a dust removing device for dry quenching.
In the figure: 1. dust remover 2, coke powder bin 3, combustor 4, ash discharge valve
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figure 1, the dust removing device for dry quenching comprises a dust remover 1, a coke powder bin 2, a burner 3 and an ash discharge valve 4 which are sequentially connected from top to bottom; a circulating gas inlet is formed in one side of the top of the dust remover 1, a circulating gas outlet is formed in the other side of the top of the dust remover, the circulating gas inlet is connected with a circulating gas outlet of the dry quenching furnace, and the circulating gas outlet is connected with a circulating gas inlet of the dry quenching boiler; the bottom of the dust remover 1 is provided with a coke powder outlet which is connected with a coke powder inlet at the top of the coke powder bin 2; a coke powder outlet at the bottom of the coke powder bin 2 is connected with a coke powder inlet at the top of the combustor 3, one side of the combustor 3 is provided with a combustion-supporting air inlet and a combustor nozzle, the other side of the combustor is provided with a hot flue gas outlet, and the hot flue gas outlet is connected with the dust remover 1 through a hot flue gas pipeline; an ash discharge valve 4 is arranged at an ash discharge port at the bottom of the combustor 3.
The dust remover 1 is a gravity settling dust remover.
And a coke powder outlet of the dust remover 1 is connected with a coke powder inlet of the coke powder bin 2 through a flange I.
And a coke powder outlet of the coke powder bin 2 is connected with a coke powder inlet of the combustor 3 through a second flange.
And the ash discharge port of the combustor 3 is connected with the ash discharge valve 4 through a third flange.
And the outer side of the hot flue gas pipeline is provided with a heat insulation layer.
According to the method for improving the steam yield of the coke dry quenching boiler, the circulating gas flows from the coke dry quenching side to the coke dry quenching side through the dust remover 1, and most coke powder in the circulating gas is settled under the action of gravity in the dust remover 1; the settled coke powder falls into the coke powder bin 2 below. The coke powder collected by the coke powder bin 2 enters the combustor 3, a proper amount of combustion-supporting air is sprayed into the combustor 3, the nozzle of the combustor 3 is ignited to fully combust the coke powder, and hot flue gas generated by combustion is introduced into the dust remover 1 through the coke powder bin 2 or is introduced into the dust remover 1 through a hot flue gas pipeline outside the combustor 3; the hot flue gas brings a large amount of heat into the circulating gas, so that the subsequent dry quenching boiler generates more steam. The ash discharging valve 4 below the burner 3 is used for controlling the discharging speed of ash, and the ash is used for generating a sealing effect and preventing air from being sucked.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. A dust removal device for dry quenching is characterized by comprising a dust remover, a coke powder bin, a burner and an ash discharge valve which are sequentially connected from top to bottom; a circulating gas inlet is formed in one side of the top of the dust remover, a circulating gas outlet is formed in the other side of the top of the dust remover, the circulating gas inlet is connected with a circulating gas outlet of the dry quenching furnace, and the circulating gas outlet is connected with a circulating gas inlet of the dry quenching boiler; the bottom of the dust remover is provided with a coke powder outlet which is connected with a coke powder inlet at the top of the coke powder bin; a coke powder outlet at the bottom of the coke powder bin is connected with a coke powder inlet at the top of the burner, a combustion-supporting air inlet and a burner nozzle are arranged at one side of the burner, a hot flue gas outlet is arranged at the other side of the burner, and the hot flue gas outlet is connected with a dust remover through a hot flue gas pipeline; an ash discharge valve is arranged at an ash discharge port at the bottom of the combustor.
2. The dust removing device for dry quenching as claimed in claim 1, wherein the dust remover is a gravity settling dust remover.
3. The dust removing device for dry quenching as claimed in claim 1, wherein the coke powder outlet of the dust remover is connected with the coke powder inlet of the coke powder bin through a flange.
4. The dust removing device for dry quenching as claimed in claim 1, wherein the coke powder outlet of the coke powder bin is connected with the coke powder inlet of the burner by a second flange.
5. The dust removing device for dry quenching as claimed in claim 1, wherein the ash discharge port of the burner is connected with the ash discharge valve through a flange.
6. The dust removing device for dry quenching as claimed in claim 1, wherein an insulating layer is arranged outside the hot flue gas pipeline.
7. A method for improving the steam yield of a coke dry quenching boiler based on the dust removing device for coke dry quenching as set forth in claim 1, characterized in that the circulating gas flows from the coke dry quenching side to the coke dry quenching side through a dust remover, in which most of the coke powder in the circulating gas settles down due to gravity; the settled coke powder falls into a coke powder bin below; the coke powder collected by the coke powder bin enters the combustor and is fully combusted in the combustor, and hot flue gas generated by combustion is introduced into the dust remover through the coke powder bin or is introduced into the dust remover through a hot flue gas pipeline outside the combustor; the hot flue gas brings a large amount of heat into the circulating gas, so that a subsequent dry quenching boiler generates more steam; the ash discharge valve below the combustor is used for controlling the discharge speed of ash, and the ash is utilized to generate a sealing effect to prevent air suction.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059317.1A CN110699096A (en) | 2019-11-01 | 2019-11-01 | Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler |
| JP2022525770A JP7400097B2 (en) | 2019-11-01 | 2020-09-10 | Dust removal device for coke dry fire extinguishing and method for improving steam yield of coke dry fire extinguishing boiler |
| PCT/CN2020/114460 WO2021082755A1 (en) | 2019-11-01 | 2020-09-10 | Dust removal device for coke dry quenching, and method for increasing steam yield of coke dry quenching boiler |
| BR112022000997A BR112022000997A2 (en) | 2019-11-01 | 2020-09-10 | Dust removal device for coke dry quenching and method for increasing steam productivity of coke dry quenching boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059317.1A CN110699096A (en) | 2019-11-01 | 2019-11-01 | Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110699096A true CN110699096A (en) | 2020-01-17 |
Family
ID=69204088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911059317.1A Pending CN110699096A (en) | 2019-11-01 | 2019-11-01 | Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7400097B2 (en) |
| CN (1) | CN110699096A (en) |
| BR (1) | BR112022000997A2 (en) |
| WO (1) | WO2021082755A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082755A1 (en) * | 2019-11-01 | 2021-05-06 | 中冶焦耐(大连)工程技术有限公司 | Dust removal device for coke dry quenching, and method for increasing steam yield of coke dry quenching boiler |
| CN114622093A (en) * | 2022-03-14 | 2022-06-14 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131602A (en) * | 1978-04-03 | 1979-10-12 | Kawasaki Steel Co | Dry cooling red heated block coke while freely controlling temperature and circulating gas components* and apparatus therefor |
| JPS5945387A (en) * | 1982-09-08 | 1984-03-14 | Ishikawajima Harima Heavy Ind Co Ltd | Treatment of powder coke in dry quencher for coke |
| JPS60161481A (en) * | 1984-01-31 | 1985-08-23 | Sumitomo Metal Ind Ltd | Apparatus for burning powdered coke in coke dry quenching apparatus |
| JPS61228088A (en) * | 1985-04-03 | 1986-10-11 | Nippon Steel Corp | Coke dry quenching equipment |
| JPH01245091A (en) * | 1988-03-25 | 1989-09-29 | Nkk Corp | Energy recovery apparatus for cdq facility |
| JP2001214166A (en) * | 2000-02-04 | 2001-08-07 | Kawasaki Steel Corp | Method for burning of coke dust at coke dry-type fire- extinguishing apparatus |
| CN210855984U (en) * | 2019-11-01 | 2020-06-26 | 中冶焦耐(大连)工程技术有限公司 | Dust collector for dry quenching |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433700A (en) | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
| CN110699096A (en) * | 2019-11-01 | 2020-01-17 | 中冶焦耐(大连)工程技术有限公司 | Dust removal device for dry quenching and method for improving steam yield of dry quenching boiler |
-
2019
- 2019-11-01 CN CN201911059317.1A patent/CN110699096A/en active Pending
-
2020
- 2020-09-10 WO PCT/CN2020/114460 patent/WO2021082755A1/en active Application Filing
- 2020-09-10 BR BR112022000997A patent/BR112022000997A2/en unknown
- 2020-09-10 JP JP2022525770A patent/JP7400097B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54131602A (en) * | 1978-04-03 | 1979-10-12 | Kawasaki Steel Co | Dry cooling red heated block coke while freely controlling temperature and circulating gas components* and apparatus therefor |
| JPS5945387A (en) * | 1982-09-08 | 1984-03-14 | Ishikawajima Harima Heavy Ind Co Ltd | Treatment of powder coke in dry quencher for coke |
| JPS60161481A (en) * | 1984-01-31 | 1985-08-23 | Sumitomo Metal Ind Ltd | Apparatus for burning powdered coke in coke dry quenching apparatus |
| JPS61228088A (en) * | 1985-04-03 | 1986-10-11 | Nippon Steel Corp | Coke dry quenching equipment |
| JPH01245091A (en) * | 1988-03-25 | 1989-09-29 | Nkk Corp | Energy recovery apparatus for cdq facility |
| JP2001214166A (en) * | 2000-02-04 | 2001-08-07 | Kawasaki Steel Corp | Method for burning of coke dust at coke dry-type fire- extinguishing apparatus |
| CN210855984U (en) * | 2019-11-01 | 2020-06-26 | 中冶焦耐(大连)工程技术有限公司 | Dust collector for dry quenching |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021082755A1 (en) * | 2019-11-01 | 2021-05-06 | 中冶焦耐(大连)工程技术有限公司 | Dust removal device for coke dry quenching, and method for increasing steam yield of coke dry quenching boiler |
| CN114622093A (en) * | 2022-03-14 | 2022-06-14 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
| CN114622093B (en) * | 2022-03-14 | 2024-01-30 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7400097B2 (en) | 2023-12-18 |
| JP2023505015A (en) | 2023-02-08 |
| WO2021082755A1 (en) | 2021-05-06 |
| BR112022000997A2 (en) | 2022-05-24 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Zhongyi Inventor after: Zheng Yajie Inventor after: Chen Liuchi Inventor after: Wang Linlin Inventor after: Yang Junfeng Inventor after: Yuan Chaohui Inventor after: Liu Yuhu Inventor after: Zhang Xiongfei Inventor after: Wang Lei Inventor before: Zheng Yajie Inventor before: Chen Liuchi Inventor before: Wang Linlin Inventor before: Yang Junfeng Inventor before: Yuan Chaohui Inventor before: Liu Yuhu Inventor before: Zhang Xiongfei Inventor before: Wang Lei |