CN108397977B - Method for drying coke dry quenching furnace by warm air - Google Patents
Method for drying coke dry quenching furnace by warm air Download PDFInfo
- Publication number
- CN108397977B CN108397977B CN201710064785.2A CN201710064785A CN108397977B CN 108397977 B CN108397977 B CN 108397977B CN 201710064785 A CN201710064785 A CN 201710064785A CN 108397977 B CN108397977 B CN 108397977B
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- Prior art keywords
- dry quenching
- boiler
- main steam
- valve
- warm air
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Coke Industry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention provides a method for drying a coke dry quenching furnace by warm air, which comprises the steps of opening a main steam stop valve and a main steam pressure regulating valve of the coke dry quenching furnace needing warm air drying, and manually opening a main steam blow-off valve; opening a communication door of the main steam pipe of the coke dry quenching boiler needing warm air drying on the other coke dry quenching main steam pipeline; and starting a boiler feed water pump and a circulating fan, and adjusting the steam introduction amount according to the requirement. The invention can effectively improve the inlet temperature of the dry quenching furnace by returning the main steam generated by dry quenching to the dry quenching boiler needing steam through the communication door, and is beneficial to realizing the warm air drying process of the dry quenching furnace.
Description
Technical Field
The invention belongs to the technical field of coking processes, and particularly relates to a warm air drying method used during maintenance of a dry quenching furnace.
Background
The dry quenching furnace is dried by warm air, and the dry quenching furnace is usually introduced into a drum of a dry quenching boiler through a low-pressure steam pipeline, and the effect of drying the dry quenching furnace by warm air is achieved by increasing the internal temperature of the boiler to heat circulating gas. However, in operation, the pressure and temperature of the low-pressure steam are sometimes insufficient, so that the inlet temperature of the coke dry quenching furnace cannot be raised to the specified temperature during dry quenching warm air drying.
Disclosure of Invention
The invention aims to provide a mode of returning main steam generated by dry quenching back to a dry quenching boiler needing steam through a communication door, so that the inlet temperature of the dry quenching boiler is increased, and warm air drying is realized.
Therefore, the technical solution adopted by the invention is as follows:
a method for drying a coke dry quenching furnace by warm air comprises the following specific steps:
(1) and opening a steam valve of the deaerator, and raising the water temperature of the deaerator to 102-105 ℃.
(2) Starting a boiler water feeding pump, feeding water to the coke dry quenching boiler to-50 mm- +50mm, and starting a forced circulation pump.
(3) And opening the emergency relief valve and the coke dry quenching furnace cover.
(4) And starting the circulating fan, and controlling the rotating speed to be 145-155 r/min.
(5) And opening a low-pressure steam inlet valve of the boiler, controlling the steam flow at 7-9 t/h, and increasing the temperature of the boiler to 80 ℃.
(6) And closing a low-pressure steam pipeline valve of the boiler, opening a main steam pressure regulating valve and a main steam stop valve, and manually opening a main steam pressure relief valve.
(7) Opening a main steam pipeline communication door, and allowing main steam of the other coke dry quenching boiler to reversely flow back to the coke dry quenching boiler for warm air drying; adjusting the steam pressure and flow entering by using a main steam pressure relief valve and a main steam pressure regulating valve, and gradually increasing the steam pressure and flow; in the temperature rise process, the main steam pressure is controlled to be not more than 3MPa according to the temperature rise amplitude of the inlet of the dry quenching furnace, and the flow is controlled to be 9-11 t/h.
(8) And adjusting the rotating speed, steam pressure and flow of a circulating fan according to the change of the inlet temperature of the dry quenching furnace, adjusting the rotating speed of the fan to 480-520 r/min at the early stage of warm air drying, and controlling the inlet temperature of the dry quenching furnace.
(9) And adjusting the drainage water quantity according to the liquid level condition of the boiler.
The invention has the beneficial effects that:
the invention can effectively improve the inlet temperature of the dry quenching furnace by returning the main steam generated by dry quenching to the dry quenching boiler needing steam through the communication door, and is beneficial to realizing the warm air drying process of the dry quenching furnace.
Detailed Description
The specific method and the steps of the dry quenching furnace warm air drying of the invention are as follows:
1. and opening a steam valve of the deaerator, and raising the water temperature of the deaerator to 104 ℃.
2. Starting a boiler water feeding pump, feeding water to the coke dry quenching boiler to-50 mm- +50mm, and starting a forced circulation pump.
3. And opening the emergency relief valve and the coke dry quenching furnace cover.
4. And starting the circulating fan, and controlling the rotating speed at 150 r/min.
5. And opening a low-pressure steam inlet valve of the boiler, controlling the steam flow at 8t/h, and increasing the temperature of the boiler to 80 ℃.
6. And closing a low-pressure steam pipeline valve of the boiler, opening a main steam pressure regulating valve and a main steam stop valve, and manually opening a main steam pressure relief valve.
7. Opening a main steam pipeline communication door, and allowing main steam of the other coke dry quenching boiler to reversely flow back to the coke dry quenching boiler for warm air drying; adjusting the steam pressure and flow entering by using a main steam pressure relief valve and a main steam pressure regulating valve, and gradually increasing the steam pressure and flow; in the temperature rising process, the main steam pressure is controlled not to exceed 3Mpa and the flow is about 10t/h according to the rising amplitude of the inlet temperature of the dry quenching furnace.
8. And adjusting the rotating speed, steam pressure and flow of a circulating fan according to the change of the inlet temperature of the dry quenching furnace, adjusting the rotating speed of the fan to 480-520 r/min at the early stage of warm air drying, and controlling the inlet temperature of the dry quenching furnace.
9. And adjusting the drainage water quantity according to the liquid level condition of the boiler.
Claims (1)
1. A method for drying a coke dry quenching furnace by warm air is characterized by comprising the following specific steps:
(1) opening a steam valve of the deaerator, and raising the water temperature of the deaerator to 102-105 ℃;
(2) starting a boiler water feeding pump, feeding water to the coke dry quenching boiler to a range of-50 mm to +50mm, and starting a forced circulation pump;
(3) opening an emergency bleeding valve and a dry quenching furnace cover;
(4) starting a circulating fan, and controlling the rotating speed to be 145-155 r/min;
(5) opening a low-pressure steam inlet valve of the boiler, controlling the steam flow at 7-9 t/h, and increasing the temperature of the boiler to 80 ℃;
(6) closing a low-pressure steam pipeline valve of the boiler, opening a main steam pressure regulating valve and a main steam stop valve, and manually opening a main steam pressure relief valve;
(7) opening a main steam pipeline communication door, and allowing main steam of the other coke dry quenching boiler to reversely flow back to the coke dry quenching boiler for warm air drying; adjusting the steam pressure and flow entering by using a main steam pressure relief valve and a main steam pressure regulating valve, and gradually increasing the steam pressure and flow; in the temperature rise process, controlling the main steam pressure not to exceed 3MPa and the flow rate to be 9-11 t/h according to the temperature rise amplitude of the inlet of the dry quenching furnace;
(8) adjusting the rotating speed, steam pressure and flow of a circulating fan according to the change of the inlet temperature of the dry quenching furnace, adjusting the rotating speed of the fan to 480-520 r/min at the early stage of warm air drying, and controlling the inlet temperature of the dry quenching furnace;
(9) and adjusting the drainage water quantity according to the liquid level condition of the boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064785.2A CN108397977B (en) | 2017-02-05 | 2017-02-05 | Method for drying coke dry quenching furnace by warm air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064785.2A CN108397977B (en) | 2017-02-05 | 2017-02-05 | Method for drying coke dry quenching furnace by warm air |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108397977A CN108397977A (en) | 2018-08-14 |
| CN108397977B true CN108397977B (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710064785.2A Active CN108397977B (en) | 2017-02-05 | 2017-02-05 | Method for drying coke dry quenching furnace by warm air |
Country Status (1)
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| CN (1) | CN108397977B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220208A (en) * | 2019-05-06 | 2019-09-10 | 河南智力汇科技有限公司 | A kind of steam pulsed audio frequency ash removing equipment and ash removal method based on PLC |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0971782A (en) * | 1995-09-05 | 1997-03-18 | Sumitomo Metal Ind Ltd | Control of operation of coke dry quenching facility |
| JP5131918B2 (en) * | 2008-06-10 | 2013-01-30 | 新日鐵住金株式会社 | Heating method for coke dry fire extinguishing equipment |
| DE102008064209B4 (en) * | 2008-12-22 | 2010-11-18 | Uhde Gmbh | Method and apparatus for the cyclical operation of coke oven benches from "heat recovery" coke oven chambers |
| CN102304369B (en) * | 2011-08-12 | 2013-03-27 | 重庆钢铁(集团)有限责任公司 | Oven-drying working process for coke dry quenching system |
| CN103740380B (en) * | 2013-12-31 | 2015-10-28 | 攀钢集团西昌钢钒有限公司 | A kind of heatingup of coke oven battery technique |
| CN103952162B (en) * | 2014-04-16 | 2016-01-06 | 上海交通大学 | A kind of coke oven Exposure degree technique |
| CN105736945B (en) * | 2016-03-25 | 2018-01-16 | 鞍钢集团工程技术有限公司 | The single main steam line of the grid-connected purging of 2 coke oven steam and the target practice method of inspection |
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| CN108397977A (en) | 2018-08-14 |
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