CN109668168A - The method for early warning that heating furnace tube is hardening cracked - Google Patents
The method for early warning that heating furnace tube is hardening cracked Download PDFInfo
- Publication number
- CN109668168A CN109668168A CN201710965511.0A CN201710965511A CN109668168A CN 109668168 A CN109668168 A CN 109668168A CN 201710965511 A CN201710965511 A CN 201710965511A CN 109668168 A CN109668168 A CN 109668168A
- Authority
- CN
- China
- Prior art keywords
- heating furnace
- early warning
- furnace tube
- oxygen content
- alarm
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/18—Detecting fluid leaks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2231/00—Fail safe
- F23N2231/20—Warning devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of method for early warning that heating furnace tube is hardening cracked, safety is poor caused by mainly solving the problems, such as Operation delay, discovery not in time in the prior art.The present invention is by using a kind of method for early warning that heating furnace tube is hardening cracked, and on the basis of DCS existing alarm setting, adds the alarm setting of a set of multi-parameter joint-monitoring, the multi-parameter includes oxygen content, fire box temperature and heated medium flow；When oxygen content is reduced to 0.5-1.5%, fire box temperature rises 10-50 DEG C, and when heated medium flow-reduction, the technical solution that DCS provides alarm decision preferably solves the above problem, can be used in the early warning that heating furnace tube is hardening cracked.
Description
Technical field
The present invention relates to a kind of method for early warning that heating furnace tube is hardening cracked.
Background technique
Petrochemical heating furnace Frequent Accidents in recent years, the production accident as caused by furnace tube leakage often occur, industry
On closed-circuit TV system is generally equipped with for Large-scale Heater, boiler tube is once leakage, which occurs, to be found in time, Heating Furnace
Can only partial parameters be caused to fluctuate at furnace tube leakage initial stage, as furnace temperature increases, oxygen content reduces, heated medium flow-reduction
Deng, manually adjusting certain parameters and can restore normally by heating furnace automatic adjustment or interior behaviour, but heating furnace cannot be transported steadily
Row, interior behaviour are notified that outer behaviour carries out scene inspection at this time, and interior behaviour can be can be found that by chimney over-emitting black exhaust or flame-observing hole observation
Accident, but apart from boiler tube material leakage, the time is longer at this time, is easy to cause more serious consequence.
It is born by oxygen content of the analysis heating furnace before and after material leakage accident occurs, combustible gas dosage, fire box temperature, burner hearth
The Parameters variations such as pressure, heated medium flow can be found that it is regular governed.But interior behaviour in operation only can be to reaching
A certain parameter to alarming value individually regulates and controls, and operation in this way has certain hysteresis quality, does not send out in time after leaking and occurring especially
Existing, one-parameter regulation at this time easilys lead to consequence further expansion, causes more serious accident.
Summary of the invention
The technical problem to be solved by the present invention is to safeties caused by Operation delay in the prior art, discovery not in time
Poor problem provides a kind of method for early warning that new heating furnace tube is hardening cracked.This method have operation do not lag, find and
When, the good advantage of safety.
To solve the above problems, The technical solution adopted by the invention is as follows: a kind of method for early warning that heating furnace tube is hardening cracked,
On the basis of DCS (dcs) existing alarm setting, the alarm setting of a set of multi-parameter joint-monitoring, institute are added
Stating multi-parameter includes oxygen content, fire box temperature and heated medium flow；When oxygen content is reduced to 0.5-1.5%, burner hearth
Temperature rises 10-50 DEG C, and when heated medium flow-reduction, DCS provides alarm decision.
In above-mentioned technical proposal, it is preferable that in the oxygen content, fire box temperature and heated medium flow, only
When 1-2 parameter fluctuates, respective alarm setting will not be triggered, when 3 parameters reach early warning value simultaneously, DCS alarm.
In above-mentioned technical proposal, it is preferable that it is existing that operator needs to check and adjust in time after receiving the report for police service heating furnace
Shape.
In above-mentioned technical proposal, it is preferable that when operator checks and adjust heating furnace status, it is negative to reduce heating furnace
Lotus, and the scene of progress is checked, the preparation for promptly stopping heating furnace is carried out.
In above-mentioned technical proposal, it is preferable if material leakage does not occur for boiler tube, according to hearth combustion situation, adjusts flue gear
Plate, air distribution, fuel gas dosage adjust heater parameters normally, if material leakage, urgent blowing out occur for boiler tube.
In above-mentioned technical proposal, it is preferable that when providing alarm decision, control on computer and warning note frame occur, simultaneously
Start sound-light alarm.
In above-mentioned technical proposal, it is preferable that have in the alarm setting of multi-parameter joint-monitoring including oxygen content, burner hearth
Relation formula between temperature and the historical data and 3 parameters of furnace pressure.
Heating furnace is after boiler tube hardening cracks, and since heated medium burns in furnace, causes furnace temperature to increase, oxygen content drop
Low, heated medium flow-reduction parameter fluctuation, middle control DCS only set the alarming value of single parameter at present.The present invention passes through close
The investigation and analysis of several years boiler tube material leakage accidents, obtain accident occur before oxygen content, combustible gas dosage, fire box temperature, combustion chamber draft,
The Parameter Variations such as fire box temperature, heated medium flow, the interior behaviour of advance notice and outer behaviour take measures, and are that heating furnace is safe
The valuable reaction time is striven in even running.This patent is analyzed for the parameter fluctuation of chemical industry heating furnace tube material leakage,
A kind of method for proposing multi-parameter early warning effectively compensates for the deficiency of existing alarm setting, and safety is good, achieves preferable skill
Art effect.
The present invention will be further described below by way of examples, but is not limited only to the present embodiment.
Specific embodiment
[embodiment 1]
A kind of method for early warning that heating furnace tube is hardening cracked adds a set of multi-parameter on the basis of DCS existing alarm setting
The alarm setting of joint-monitoring, the multi-parameter include oxygen content, fire box temperature and heated medium flow；Work as oxygen content
It is reduced to 0.5-1.5%, fire box temperature rises 10-50 DEG C, and when heated medium flow-reduction, DCS provides alarm decision.
In the oxygen content, fire box temperature and heated medium flow, when only 1-2 parameter fluctuates, no
Respective alarm setting can be triggered, when 3 parameters reach early warning value simultaneously, DCS alarm.
Operator needs to check and adjust in time heating furnace status after receiving the report for police service.Operator, which checks and adjusts, to be added
When hot stove status, heating furnace load is reduced, and the scene of progress is checked, carry out the preparation for promptly stopping heating furnace.If boiler tube is not
Material leakage occurs, according to hearth combustion situation, adjusts damper, air distribution, fuel gas dosage and adjusts heater parameters normally, such as
Material leakage, urgent blowing out occur for fruit boiler tube.When providing alarm decision, controls on computer and warning note frame, while starting sound occur
Light alarm.
There is the history number including oxygen content, fire box temperature and furnace pressure in the alarm setting of multi-parameter joint-monitoring
Accordingly and the relation formula between 3 parameters.
The method for early warning that certain aromatic hydrocarbons heating furnace tube is hardening cracked, operating method:
(1) according to heating furnace operate normally in the key parameters such as oxygen content, fire box temperature, heated medium flow, formulate
Reasonable oxygen content, fire box temperature, rate-of flow fluctuation range take oxygen content to be reduced to 1%, and fire box temperature rises 30 DEG C,
And heated medium flow-reduction 10% is used as early warning value.
(2) on the basis of original DCS alarm setting, the alarm method of a set of multi-parameter joint-monitoring is added by programming,
When above three key parameter reaches fluctuation range simultaneously, alarm interpretation is provided, pops up boiler tube material leakage reminding window.
(3) the outer behaviour carry out scene of behaviour's connection is checked in, is carried out urgent blowing out and is prepared, if material leakage does not occur for boiler tube, according to
Hearth combustion situation adjusts damper, air distribution, fuel gas dosage and adjusts heater parameters normally, if boiler tube leaks
Material, urgent blowing out.
Claims (7)
1. a kind of method for early warning that heating furnace tube is hardening cracked adds a set of multi-parameter connection on the basis of DCS existing alarm setting
The alarm setting of monitoring is closed, the multi-parameter includes oxygen content, fire box temperature and heated medium flow；When oxygen content drops
Down to 0.5-1.5%, fire box temperature rises 10-50 DEG C, and when heated medium flow-reduction, DCS provides alarm decision.
2. the method for early warning that heating furnace tube is hardening cracked according to claim 1, it is characterised in that the oxygen content, burner hearth
In temperature and heated medium flow, when only 1-2 parameter fluctuates, respective alarm setting will not be triggered, is joined when 3
When counting while reaching early warning value, DCS alarm.
3. the method for early warning that heating furnace tube is hardening cracked according to claim 1, it is characterised in that operator is receiving the report for police service
After need to check and adjust heating furnace status in time.
4. the method for early warning that heating furnace tube is hardening cracked according to claim 3, it is characterised in that operator checks and adjusts
When heating furnace status, heating furnace load is reduced, and the scene of progress is checked, carry out the preparation for promptly stopping heating furnace.
5. the method for early warning that heating furnace tube is hardening cracked according to claim 4, it is characterised in that if material leakage does not occur for boiler tube,
According to hearth combustion situation, adjusts damper, air distribution, fuel gas dosage and adjust heater parameters normally, if boiler tube is sent out
Raw material leakage, urgent blowing out.
6. the method for early warning that heating furnace tube is hardening cracked according to claim 1, it is characterised in that when providing alarm decision, control
Occur warning note frame on computer, while starting sound-light alarm.
7. the method for early warning that heating furnace tube is hardening cracked according to claim 1, it is characterised in that the report of multi-parameter joint-monitoring
The relationship having between historical data and 3 parameters including oxygen content, fire box temperature and furnace pressure in alert setting is public
Formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965511.0A CN109668168A (en) | 2017-10-17 | 2017-10-17 | The method for early warning that heating furnace tube is hardening cracked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710965511.0A CN109668168A (en) | 2017-10-17 | 2017-10-17 | The method for early warning that heating furnace tube is hardening cracked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109668168A true CN109668168A (en) | 2019-04-23 |
Family
ID=66139863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710965511.0A Pending CN109668168A (en) | 2017-10-17 | 2017-10-17 | The method for early warning that heating furnace tube is hardening cracked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109668168A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338471A (en) * | 2011-09-02 | 2012-02-01 | 中国石油天然气股份有限公司 | Optimization operation monitoring method of heating furnace |
| CN202434013U (en) * | 2012-01-05 | 2012-09-12 | 福建国化热像监控设备有限公司 | Infrared thermal imaging online monitoring system for petrochemical optional key device |
| CN102798294A (en) * | 2012-06-19 | 2012-11-28 | 合肥瑞石测控工程技术有限公司 | Real-time monitoring and safety warning device for temperature of furnace tube of tubular industrial furnace |
-
2017
- 2017-10-17 CN CN201710965511.0A patent/CN109668168A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338471A (en) * | 2011-09-02 | 2012-02-01 | 中国石油天然气股份有限公司 | Optimization operation monitoring method of heating furnace |
| CN202434013U (en) * | 2012-01-05 | 2012-09-12 | 福建国化热像监控设备有限公司 | Infrared thermal imaging online monitoring system for petrochemical optional key device |
| CN102798294A (en) * | 2012-06-19 | 2012-11-28 | 合肥瑞石测控工程技术有限公司 | Real-time monitoring and safety warning device for temperature of furnace tube of tubular industrial furnace |
Non-Patent Citations (2)
| Title |
|---|
| 化工安全管理: "http://wap.aitmy.com/21-0-210792-1.html", 《化工安全管理》 * |
| 戴乐强: "红外在线监测制氢转化炉中的应用", 《仪器仪表用户》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |
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| RJ01 | Rejection of invention patent application after publication |