CN109341363A - A kind of method of fast lifting ring cold flue gas temperature - Google Patents
A kind of method of fast lifting ring cold flue gas temperature Download PDFInfo
- Publication number
- CN109341363A CN109341363A CN201811174633.9A CN201811174633A CN109341363A CN 109341363 A CN109341363 A CN 109341363A CN 201811174633 A CN201811174633 A CN 201811174633A CN 109341363 A CN109341363 A CN 109341363A
- Authority
- CN
- China
- Prior art keywords
- machine
- sintering
- gas temperature
- ring cold
- shut down
- 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
-
- 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
-
- 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
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
-
- 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
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
Abstract
The present invention relates to a kind of methods of fast lifting ring cold flue gas temperature; sintered ring cold flue gas temperature during shutting down the short time maintains 300 DEG C or more; concrete scheme is as follows: 1) before sintering machine is shut down; ring cooling rate is than reducing 6%-7%; sintering machine machine speed improves 5%-7%; ring cold machine cloth thickness of feed layer 30mm-40mm is improved, sintering end point moves backward the position of 0.5-0.6 bellows；Head cloth intrusion increases 10mm-15mm, organizes to shut down after the increased part of intrusion reaches tail；2) after sintering machine is shut down, main pumping frequency conversion revolution is immediately closed off to 670-700r/min, and main exhausting door immediately closes off；Ring cold machine high temperature section air blower throttle opening is reduced to 40%-50%, when turning back on that air door is fully open；3) after turning back on, machine speed improves 5%-10% before sintering machine machine speed ratio is shut down, and sintering large flue exhaust gas temperature control is sintered main exhausting door and gradually opens between 110 DEG C -120 DEG C.The present invention alleviates influence of the temporary stoppage to afterheat generating system, improves sintering waste heat generating amount.
Description
Technical field
The present invention relates to sintering art, in particular to a kind of method of fast lifting ring cold flue gas temperature.
Background technique
Since sintering circular-cooler waste heat recycles (cogeneration project) operation, there are the sintering machine system short time to shut down (45
In minute) afterwards flue-gas temperature cogeneration requirement is not achieved and causes generator off-the-line, the phenomenon that power generation stoppage, and power generation stoppage
Afterwards, restore power generation again and at least need 5 hours, cause thermal energy waste and generated energy decline, seriously affect thermal energy recycling, improve
The cost of self power generation.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of methods of fast lifting ring cold flue gas temperature, solve sintering
The system short time shut down after, ring cold machine flue-gas temperature decline the problem of, avoid sintering waste heat generating system off-the-line.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of method of fast lifting ring cold flue gas temperature, the sintered ring cold flue gas temperature during shutting down the short time maintain
At 300 DEG C or more, concrete scheme is as follows:
1) before sintering machine is shut down, ring cooling rate improves 5%-7% than reducing 6%-7%, sintering machine machine speed, improves ring cold machine cloth
Expect that thickness of feed layer 30mm-40mm, sintering end point move backward the position of 0.5-0.6 bellows；Head cloth intrusion increases
10mm-15mm organizes to shut down after the increased part of intrusion reaches tail；
2) after sintering machine is shut down, main pumping frequency conversion revolution is immediately closed off to 670-700r/min, and main exhausting door immediately closes off；Ring
Cold high temperature section air blower throttle opening is reduced to 40%-50%, when turning back on that air door is fully open；
3) after turning back on, machine speed improves 5%-10% before sintering machine machine speed ratio is shut down, and is sintered the control of large flue exhaust gas temperature
System is sintered main exhausting door and gradually opens between 110 DEG C -120 DEG C.
The short time shutdown is the shutdown within 45 minutes.
Compared with prior art, the beneficial effects of the present invention are:
The present invention can be avoided after shutting down because of the short time, cold one or the two sections of exhaust gas temperature of ring under the premise of stable sintering produces
Degree causes the cold cogeneration off-the-line of ring after sharply declining.Realize the fast lifting of ring cold machine flue-gas temperature, sintered ring cold flue gas
Temperature maintains 300 DEG C or more, avoid single system operation when, since flue-gas temperature is low, electricity generation system shut down the problem of.Alleviate
The problem of due to sintering system operation, the influence to afterheat generating system can be improved sintering waste heat generating amount.Implement this skill
It is postoperative, it is average monthly to reduce by 2 generator outages.Meet ring cold machine hot waste gas power generation requirements.
Specific embodiment
Below with reference to embodiment, the present invention is further described:
The present invention will be described in detail for following embodiment.These embodiments be only to preferred embodiment of the invention into
Row description, does not limit the scope of the present invention.
Embodiment 1
Plan the method for fast lifting ring cold flue gas temperature when short time shutdown, concrete scheme is as follows:
1) ring cooling rate is reduced than 0.02 before shutting down, is adjusted to 0.38, improve sintering machine machine speed 0.1m/min (normal production
Sintering machine machine speed is in 1.6-1.80.1m/min), ring cold machine cloth thickness of feed layer 30mm is improved, sintering end point suitably moves backward
The position of 0.5 bellows.
2) before shutting down, head binder degree is suitably increased, head cloth intrusion increases 10mm, increased to intrusion
Part can organize to shut down after reaching tail, improve sintering machine bed of material accumulation of heat effect.
3) after shutting down, main pumping frequency conversion is immediately closed off to 700r/min, main exhausting door and is immediately closed off, and can slow down sintering in this way
Vertical combustion speed extends sintering time.
4) after shutting down, ring cold machine high temperature section air blower (2# air blower) throttle opening is reduced to 50%, to during normal production
Air door is fully open.
5) after being switched on, machine speed improves 0.1-0.15m/min to sintering machine machine speed ratio during normal production, makes the material of burning as early as possible
It pours out, guarantees ring cold one section and two sections of temperature fast liftings.
6) after being switched on, being sintered main pumping door opening foundation is sintering large flue exhaust gas temperature control between 110-120 DEG C,
It is sintered main exhausting door gradually to open, prevents open air door from the cold high temperature section flue-gas temperature of burn-off phenomenon, ring being caused to reduce too early.
Embodiment 2
When shutting down the unplanned short time, the method for fast lifting ring cold flue gas temperature, concrete scheme are as follows:
1) after shutting down, main pumping frequency conversion is immediately closed off to 700r/min, main exhausting door and is immediately closed off to 0%, can be subtracted in this way
Slow sintering vertical combustion speed, extends sintering time.
2) after shutting down, ring cold machine high temperature section air blower (2# air blower) throttle opening is reduced to 50%, to during normal production
Air door is fully open.
3) after being switched on, machine speed improves 0.1-0.15m/min to sintering machine machine speed ratio during normal production, makes the material of burning as early as possible
It pours out, guarantees ring cold one section and two sections of fast quick-recoveries of temperature.
4) after being switched on, being sintered main pumping door opening foundation is sintering large flue exhaust gas temperature control between 110-120 DEG C,
It is sintered main exhausting door gradually to open, prevents open air door from the cold high temperature section flue-gas temperature of burn-off phenomenon, ring being caused to reduce too early.
Claims (2)
1. a kind of method of fast lifting ring cold flue gas temperature, which is characterized in that this method makes the sintering during short time shutdown
Ring cold flue gas temperature maintains 300 DEG C or more, and concrete scheme is as follows:
1) before sintering machine is shut down, ring cooling rate improves 5%-7% than reducing 6%-7%, sintering machine machine speed, improves ring cold machine cloth material
Thickness degree 30mm-40mm, sintering end point move backward the position of 0.5-0.6 bellows；Head cloth intrusion increases 10mm-
15mm organizes to shut down after the increased part of intrusion reaches tail；
2) after sintering machine is shut down, main pumping frequency conversion revolution is immediately closed off to 670-700r/min, and main exhausting door immediately closes off；Ring cold machine
High temperature section air blower throttle opening is reduced to 40%-50%, when turning back on that air door is fully open；
3) after turning back on, machine speed improves 5%-10% before sintering machine machine speed ratio is shut down, and sintering large flue exhaust gas temperature control exists
Between 110 DEG C -120 DEG C, it is sintered main exhausting door and gradually opens.
2. a kind of method of fast lifting ring cold flue gas temperature according to claim 1, which is characterized in that it is described in short-term
Between shut down as the shutdown within 45 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174633.9A CN109341363A (en) | 2018-10-09 | 2018-10-09 | A kind of method of fast lifting ring cold flue gas temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811174633.9A CN109341363A (en) | 2018-10-09 | 2018-10-09 | A kind of method of fast lifting ring cold flue gas temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109341363A true CN109341363A (en) | 2019-02-15 |
Family
ID=65308808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811174633.9A Pending CN109341363A (en) | 2018-10-09 | 2018-10-09 | A kind of method of fast lifting ring cold flue gas temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109341363A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168922A (en) * | 2011-03-11 | 2011-08-31 | 东北大学 | Device and method for efficiently recovering and utilizing waste heat resources in sintering process |
| CN102589305A (en) * | 2012-02-24 | 2012-07-18 | 思安新能源股份有限公司 | Sintering waste heat generating system |
| CN105804819A (en) * | 2015-08-07 | 2016-07-27 | 华北理工大学 | Regulation and control method for improving recovery amount of sintering waste heat and operational stability of power generation system |
| CN105910450A (en) * | 2016-06-30 | 2016-08-31 | 中冶华天工程技术有限公司 | Exhaust heat recycling system of sintering circular cooling machine |
| CN106595327A (en) * | 2017-01-10 | 2017-04-26 | 中钢集团鞍山热能研究院有限公司 | Linkage type sintered ore waste heat recovery and comprehensive utilization process and system |
-
2018
- 2018-10-09 CN CN201811174633.9A patent/CN109341363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168922A (en) * | 2011-03-11 | 2011-08-31 | 东北大学 | Device and method for efficiently recovering and utilizing waste heat resources in sintering process |
| CN102589305A (en) * | 2012-02-24 | 2012-07-18 | 思安新能源股份有限公司 | Sintering waste heat generating system |
| CN105804819A (en) * | 2015-08-07 | 2016-07-27 | 华北理工大学 | Regulation and control method for improving recovery amount of sintering waste heat and operational stability of power generation system |
| CN105910450A (en) * | 2016-06-30 | 2016-08-31 | 中冶华天工程技术有限公司 | Exhaust heat recycling system of sintering circular cooling machine |
| CN106595327A (en) * | 2017-01-10 | 2017-04-26 | 中钢集团鞍山热能研究院有限公司 | Linkage type sintered ore waste heat recovery and comprehensive utilization process and system |
Non-Patent Citations (1)
| Title |
|---|
| 马鹏等: "《马钢2×380m2烧结机余热发电短时停机操作优化实践》", 《山西冶金》 * |
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Application publication date: 20190215 |