CN104803350B - A kind of method of converting furnace surface temperature equilibrium - Google Patents
A kind of method of converting furnace surface temperature equilibrium Download PDFInfo
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- CN104803350B CN104803350B CN201410039732.1A CN201410039732A CN104803350B CN 104803350 B CN104803350 B CN 104803350B CN 201410039732 A CN201410039732 A CN 201410039732A CN 104803350 B CN104803350 B CN 104803350B
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- temperature
- burner
- combustion air
- intake valve
- equilibrium
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Abstract
The method that the present invention relates to the equilibrium of a kind of converting furnace surface temperature, the method comprises the following steps: combustion air valve and fuel under high pressure intake valve, the low-pressure fuel intake valve of burner inlet are disposed as full-gear by (1)；(2) use infrared high-temperature detector that every boiler tube in reburner is carried out temperature survey one by one, according to measuring the data obtained, select the burner of high temperature furnace pipe corresponding region, turn the air inflow of combustion air valve on this burner down；(3) stably burn after the adjustment of combustion air valve more than 2h, repeats step (2)；(4) operation of repeatedly circulation step (2) (3)；(5) if tube skin temperature remains at a small amount of high temperature of part in reburner, employing turns down low-pressure fuel intake valve on burner and controls, if still there is a small amount of high temperature furnace pipe of part, then does the most perfect by adjusting the operation of fuel under high pressure intake valve.Compared with prior art, the advantages such as product of the present invention has safe and simple, reliable, strong operability.
Description
Technical field
The present invention relates to a kind of reburner, the method especially relating to the equilibrium of a kind of converting furnace surface temperature.
Background technology
Chemical Manufacture enterprise with guarantee enterprise's equipment safety, reliable, persistence for business administration focus target, this
Target is directly connected to the life of enterprise, is the most important thing in business administration.
In large-size chemical steam conversion hydrogen production plant, its reburner equipment is the production equipment of core, this large-scale steaming
Vapour reburner typically uses tipburn negative-pressure type stove, and boiler tube is in a row distributed in burner both sides, and methane steam is by stream
Inverted boiler tube, relies on the mode of heating of absorption burner Fire Radiation heat to facilitate C-H high temperature chain rupture and chemistry
Reaction.The structure of tipburn negative-pressure type stove typically uses furnace roof to arrange burner, and is distributed in boiler tube surrounding in a row, i.e.
Besieged boiler tube in a row can spray from the burner of surrounding all directions and absorb heat at combustion flame.Therefore, reburner stove
Pipe assembly is core facility in reburner equipment.Furnace tube device daily normal, steady, pacify, expire, excellent operation, directly
It is related to the profit of enterprise, is related to the existence of enterprise originally.So, involve all management operations of boiler tube,
It it is all the act of the most important thing.
For a long time, the balance optimizing management of converting furnace surface temperature annoyings producing hydrogen from steam conversion enterprise always
Industry, this mainly has following because producing the impact that huge negative consequences factor is brought.
One, the unbalanced boiler tube normal safe that directly threatens of tube skin temperature reliably runs.Exceed design
The boiler tube that temperature uses only runs the 10% of boiler tube its service life in design uses temperature, and easily occurs
The hazardous accidents of boiler tube explosion.Boiler tube cost and the required expense of replacing are the most high simultaneously, the time between overhauls(TBO) resumed production
The longest.A general similar internal diameter isMillimeter, its equipment cost of boiler tube of a length of L=15 rice is 150,000；
As 18800Nm3The device of/h hydrogen is changed all boiler tube costs and is about 10,000,000 yuan, and the time between overhauls(TBO) at least needs
The time of 45 days, have a strong impact on operation productivity ratio.
Its two, the unbalanced service life badly influencing boiler tube inner catalyst of tube skin temperature.Boiler tube is catalyzed
The cost of agent is high, is typically similar to 18800Nm3The device of/h hydrogen, its catalyst cost is 1,000,000 yuan of people
Coin, the artificial and equipment cost of replacing is the highest, and the time between overhauls(TBO) needed for what is more important more catalyst changeout is longer,
As producing 18800Nm per year3The device of hydrogen more catalyst changeout every time at least needs the repair time of 15 days.
Its three, the unbalanced conversion ratio directly influencing process gas gas of tube skin temperature, then have influence on product
The qualification rate of product and the yield of product.
Its four, the unbalanced service life that also can be related to reburner upstream device of tube skin temperature.Due to stove
Tube-surface temperature unbalanced, makes the unbalanced of each coil outlet process gas conversion temperature, has the existence of high temperature dot,
The impact bringing local superhigh temperature to upstream device exists.
Therefore, the operation management that optimizes of tube skin temperature equilibrium is always the key of chemical industry producing hydrogen from steam conversion enterprise
Point.
The most typically balance optimizing to producing hydrogen from steam conversion tube skin temperature operates and mostly rests on relatively
For original ocular examination, Some Enterprises uses the unilateral maneuver of local thermometric local directed complete set；Also there is only a few
Ji Jia large enterprise uses and chooses indivedual boiler tube and at its surface patch temperature sensing sheet and reach outward transmitter and make reference
Display, but the service life of this temperature patch facility is short, stable and poor reliability, and such long-term operation gets up,
Boiler tube is still in blind pipe and runs, and paster is arranged on tube skin and the conduction of heat of boiler tube also brings the negative of local
Impact, and install the easiest.Therefore, the optimization operation management of tube skin temperature equilibrium is always chemical industry steam
The headache of reforming hydrogen manufacturing enterprise is sick.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and provide a kind of safe and simple,
Reliably, the method for the reburner surface temperature equilibrium of strong operability.
The purpose of the present invention can be achieved through the following technical solutions: the equilibrium of a kind of converting furnace surface temperature
Method, it is characterised in that the method comprises the following steps:
(1) combustion air valve and fuel under high pressure intake valve, the low-pressure fuel intake valve of burner inlet are respectively provided with
For full-gear；
(2) use infrared high-temperature detector that every boiler tube in reburner is carried out temperature survey one by one, according to survey
Amount the data obtained, selects the burner of high temperature furnace pipe corresponding region, turns the air inlet of combustion air valve on this burner down
Amount；
(3) stably burn after the adjustment of combustion air valve more than 2h, repeats step (2)；
(4) operation of repeatedly circulation step (2)-(3)；
(5) if tube skin temperature remains at a small amount of high temperature of part in reburner, cannot be with adjusting combustion air
The method of valve controls, then employing turns down low-pressure fuel intake valve on burner and controls, if boiler tube in reburner
The most still there is a small amount of high temperature furnace pipe of part in surface temperature, then next by adjusting the operation of fuel under high pressure intake valve again
Do the most perfect.
The flame-observing hole in the infrared high-temperature detector selective radiation section furnace tube high temperature Duan Chu cross section described in step (2) enters
Row thermometric.
Described infrared high-temperature detector selects Applicable temperature at 700 DEG C～1100 DEG C of infrared heat temperature-measuring guns.
The reflectance of described infrared high-temperature detector selects between 0.9～0.95.
The amplitude of accommodation of the air inflow of combustion air valve on this burner of turning down described in step (2) is 5%.
Operating mode when described infrared high-temperature detector detects selects to operate during reburner maximum load operating mode,
The most at full capacity or it is optimized adjustment during over loading measurement condition, is optimized operation and needs 24 hours and stablize work
The time conditions of condition.
Turning down low-pressure fuel intake valve on burner and adjusting the operation of fuel under high pressure intake valve described in step (5)
Identical with turning the step of combustion air valve on burner down.
Compared with prior art, the invention have the advantages that
1, equalization methods is safe and simple, reliable, strong operability.
2, it is greatly prolonged boiler tube service life, on the one hand improves and bear extreme heat load, on the other hand reduce boiler tube
Amount of tension and creep compliance；Promote each bar oven tube lifetime to equalize, it is to avoid indivedual boiler tube burst booster contingencies simultaneously
Occur, do strong effective guarantee for scheduled overhaul, provide reliable guarantee for equipment safety continuous and stable production,
Improve device productivity ratio；It is greatly reduced the cost of overhaul.
3, promoting endothermic catalytic reaction equilibrium in each bar boiler tube, catalyst applying working condition equalizes, is greatly prolonged it and makes
With the life-span, the use cost of catalyst is greatly lowered.
4, reduce boiler tube upstream device thermal extremes, improve upstream device working condition, the most suitably reduce downstream
(cooling) energy consumption of equipment.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
March 7 in 2011～8 days, Shanghai Hua Lin industrial gases company limited producing hydrogen from steam conversion furnace apparatus (is called for short
SMR1 device) carry out super large Road test.During this, reburner burner operation situation is checked and adjusts
Whole, the especially monitoring to tube skin temperature is the closest, is divided into whole 56 boiler tube tables in measuring stove 4 times
Surface temperature.By being analyzed with measuring the data obtained, and 4 adjustment burner combustion airs and low compression ignition
Material air valve opening, in order to ensure that 56 tube skin temperatures, less than design load 960 DEG C, promote 56 stoves simultaneously
The surface temperature of pipe equalizes as far as possible.
◆ use infrared high-temperature detector that 56 tube skin temperatures of SMR1 reburner are measured one by one,
Utilize OFFICE-EXCEL software and combine the data that top construction layout drawing measurement of comparison is obtained, to 24
Platform burner combustion air and low-pressure fuel intake valve valve opening are adjusted, and reduce 56 tube skin temperature differences；
By 4 measurements, comparison and adjustment, reduce 56 tube skin temperature difference as far as possible, promote reburner to reach
Optimal duty.
Step is as follows:
1, temperature measurement location Uniform provisions is flame-observing hole on reburner, and thermometric height is with the eye level sight line of normal person
As vertical height；
2, the reflectance of infrared high-temperature detector is unified is arranged on 0.92；
3, Field adjustment burner combustion air and the manual intake valve valve opening of low-pressure fuel；
4, all of thermometric and operation data are recorded.
Result:
1, in burner hearth, before 56 boiler tube temperature difference extreme value self-adjustings 110 DEG C are down to 49 DEG C after adjusting, simultaneously this
Also it is the minimum temperature difference value in (the big load of SMR) adjustment history
2,942 DEG C before the highest boiler tube temperature self-regulating is whole in 56 boiler tubes in burner hearth are down to 924 DEG C after adjusting,
This is also the minimum during (the big load of SMR) history adjusts simultaneously.
Embodiment 2
A kind of method of converting furnace surface temperature equilibrium, the method comprises the following steps:
(1) combustion air and fuel under high pressure intake valve, the low-pressure fuel intake valve of burner inlet are disposed as
Full-gear；
(2) when reburner maximum load operating mode (at full capacity or be optimized adjustment during over loading measurement condition,
It is optimized operation and needs the time conditions of 24 hours steady working condition) use infrared high-temperature detector to conversion
In stove, every boiler tube carries out temperature survey one by one, according to measuring the data obtained, selects the combustion of high temperature furnace pipe corresponding region
Burner, turns the air inflow of combustion air valve on this burner down；The amplitude of accommodation is the switch degree of 5%.
The flame-observing hole in described infrared high-temperature detector selective radiation section furnace tube high temperature Duan Chu cross section carries out thermometric.Institute
The infrared high-temperature detector stated selects Applicable temperature at 700 DEG C of infrared heat temperature-measuring guns.Described infrared high-temperature
The reflectance of detector selects between 0.9.
(3) stably burn after the adjustment of combustion air valve more than 2h, repeats step (2)；
(4) operation of repeatedly circulation step (2)-(3)；
(5) if tube skin temperature remains at a small amount of high temperature of part in reburner, cannot be with adjusting combustion air
The method of valve controls, then employing turns down low-pressure fuel intake valve on burner and controls, if boiler tube in reburner
The most still there is a small amount of high temperature furnace pipe of part in surface temperature, then next by adjusting the operation of fuel under high pressure intake valve again
Do the most perfect.Wherein said turns down low-pressure fuel intake valve and the behaviour of adjustment fuel under high pressure intake valve on burner
Make identical with turning the step of combustion air valve on burner down.
Embodiment 3
A kind of method of converting furnace surface temperature equilibrium, the method comprises the following steps:
(1) combustion air and fuel under high pressure intake valve, the low-pressure fuel intake valve of burner inlet are disposed as
Full-gear；
(2) when reburner maximum load operating mode (at full capacity or be optimized adjustment during over loading measurement condition,
It is optimized operation and needs the time conditions of 24 hours steady working condition) use infrared high-temperature detector to conversion
In stove, every boiler tube carries out temperature survey one by one, according to measuring the data obtained, selects the combustion of high temperature furnace pipe corresponding region
Burner, turns the air inflow of combustion air valve on this burner down；The amplitude of accommodation is the switch degree of 5%.
The flame-observing hole in described infrared high-temperature detector selective radiation section furnace tube high temperature Duan Chu cross section carries out thermometric.Institute
The infrared high-temperature detector stated selects Applicable temperature at 1100 DEG C of infrared heat temperature-measuring guns.Described infrared ray is high
The reflectance of temperature detector selects between 0.95.
(3) stably burn after the adjustment of combustion air valve more than 2h, repeats step (2)；
(4) operation of repeatedly circulation step (2)-(3)；
(5) if tube skin temperature remains at a small amount of high temperature of part in reburner, cannot be with adjusting combustion air
The method of valve controls, then employing turns down low-pressure fuel intake valve on burner and controls, if boiler tube in reburner
The most still there is a small amount of high temperature furnace pipe of part in surface temperature, then next by adjusting the operation of fuel under high pressure intake valve again
Do the most perfect.
Claims (7)
1. the method for a converting furnace surface temperature equilibrium, it is characterised in that the method comprises the following steps:
(1) combustion air valve and fuel under high pressure intake valve, the low-pressure fuel intake valve of burner inlet are respectively provided with
For full-gear；
(2) use infrared high-temperature detector that every boiler tube in reburner is carried out temperature survey one by one, according to survey
Amount the data obtained, selects the burner of high temperature furnace pipe corresponding region, turns the air inlet of combustion air valve on this burner down
Amount；
(3) stably burn after the adjustment of combustion air valve more than 2h, repeats step (2)；
(4) operation of repeatedly circulation step (2)-(3)；
(5) if tube skin temperature remains at a small amount of high temperature of part in reburner, cannot be with adjusting combustion air
The method of valve controls, then employing turns down low-pressure fuel intake valve on burner and controls, if boiler tube in reburner
The most still there is a small amount of high temperature of part in surface temperature, then is done by the operation of adjustment fuel under high pressure intake valve again
The most perfect.
The method of a kind of converting furnace surface temperature the most according to claim 1 equilibrium, it is characterised in that
The flame-observing hole in the infrared high-temperature detector selective radiation section furnace tube high temperature Duan Chu cross section described in step (2) is surveyed
Temperature.
The method of a kind of converting furnace surface temperature the most according to claim 1 and 2 equilibrium, its feature
Being, described infrared high-temperature detector selects Applicable temperature at 700 DEG C～1100 DEG C of infrared heat temperature-measuring guns.
The method of a kind of converting furnace surface temperature the most according to claim 3 equilibrium, it is characterised in that
The reflectance of described infrared high-temperature detector selects between 0.9～0.95.
The method of a kind of converting furnace surface temperature the most according to claim 1 equilibrium, it is characterised in that
The amplitude of accommodation of the air inflow of combustion air valve on this burner of turning down described in step (2) is 5%.
The method of a kind of converting furnace surface temperature the most according to claim 1 equilibrium, it is characterised in that
Operating mode when described infrared high-temperature detector detects selects to operate during reburner maximum load operating mode, the fullest
It is optimized adjustment when load or over loading measurement condition, is optimized operation and needs 24 hours steady working condition
Time conditions.
The method of a kind of converting furnace surface temperature the most according to claim 1 equilibrium, it is characterised in that
Turning down low-pressure fuel intake valve on burner and adjusting operation and the tune of fuel under high pressure intake valve described in step (5)
On little burner, the step of combustion air valve is identical, and wherein, described turns the step of combustion air valve on burner down
For: the amplitude of accommodation of air inflow is 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410039732.1A CN104803350B (en) | 2014-01-27 | 2014-01-27 | A kind of method of converting furnace surface temperature equilibrium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410039732.1A CN104803350B (en) | 2014-01-27 | 2014-01-27 | A kind of method of converting furnace surface temperature equilibrium |
Publications (2)
| Publication Number | Publication Date |
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| CN104803350A CN104803350A (en) | 2015-07-29 |
| CN104803350B true CN104803350B (en) | 2016-08-31 |
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ID=53688625
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410039732.1A Expired - Fee Related CN104803350B (en) | 2014-01-27 | 2014-01-27 | A kind of method of converting furnace surface temperature equilibrium |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186472A (en) * | 1986-02-10 | 1987-08-14 | Toshiba Corp | Fuel system controller for fuel cell power generation plant |
| CN103033597A (en) * | 2012-12-07 | 2013-04-10 | 上海宝冶工程技术有限公司 | Online detection method for pipelines of blast furnace |
-
2014
- 2014-01-27 CN CN201410039732.1A patent/CN104803350B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62186472A (en) * | 1986-02-10 | 1987-08-14 | Toshiba Corp | Fuel system controller for fuel cell power generation plant |
| CN103033597A (en) * | 2012-12-07 | 2013-04-10 | 上海宝冶工程技术有限公司 | Online detection method for pipelines of blast furnace |
Non-Patent Citations (2)
| Title |
|---|
| 工业炉管温度的红外成像测试方法;戴煜 等;《南京化工大学学报》;19991130;第21卷(第6期);第44-48页 * |
| 裂解炉炉管表面温度的测量;孙建兵 等;《乙烯工业》;20111231;第23卷(第3期);第43-46页 * |
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| CN104803350A (en) | 2015-07-29 |
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Granted publication date: 20160831 Termination date: 20210127 |