CN108253415A - A kind of method for eliminating Circulating Fluidized Bed Temperature deviation - Google Patents
A kind of method for eliminating Circulating Fluidized Bed Temperature deviation Download PDFInfo
- Publication number
- CN108253415A CN108253415A CN201810073601.3A CN201810073601A CN108253415A CN 108253415 A CN108253415 A CN 108253415A CN 201810073601 A CN201810073601 A CN 201810073601A CN 108253415 A CN108253415 A CN 108253415A
- Authority
- CN
- China
- Prior art keywords
- temperature
- blast cap
- round steel
- data processor
- gap
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The invention discloses it is a kind of eliminate Circulating Fluidized Bed Temperature deviation method, including：Step 1: the laying of temperature point and temperature sensor installation；Step 2: in blast cap it is required install additional round steel quantity and diameter calculating；Step 3: install round steel in blast cap additional；Step 4: the adjustment of the round steel installed additional in blast cap and maximum bed temperature deviation output.Step of the present invention is simple and realizes conveniently, by loading area being needed to install round steel additional in blast cap, changes maximum bed temperature deviation, solves the problems, such as that Circulating Fluidized Bed Temperature is small in the end and big in the middle, reduce NO caused by localized hyperthermiaXThe amount of being originally generated improves the whole fluid effect of material, highly practical.
Description
Technical field
The invention belongs to eliminate Circulating Fluidized Bed Temperature deviation technical field, and in particular to a kind of elimination is ciculation fluidized
The method of bed of boiler temperature deviation.
Background technology
In today that circulating fluidized bed boiler gradually maximizes, gradually increasing for burner hearth bed surface area results in cloth wind unevenness
The intermediate region even, air quantity is larger burning due to air quantity abundance is abundant, and thermal discharge is larger；And the smaller left and right side region of air quantity because
Air quantity is smaller and burns insufficient, and thermal discharge is smaller, high among bed temperature, left and right ends are low, and it is big to ultimately cause bed temperature deviation, above-mentioned
Problem has seriously limited Circulating Fluidized Bed Boilers on-load ability and has increased NOXRaw emissions, also become cycle
The biggest obstacle that fluidized-bed combustion boiler develops to overcritical, ultra supercritical.The presence of bed temperature deviation can lead to unit on-load ability
Limited, NOXThe amount of being originally generated is big, bed layer pressure fluctuates, bed surface locally has going out for the problems such as coke button generates, carbon content in the bottom ash is high
It is existing.Foreign countries not yet propose practicable solution regarding to the issue above still in further conceptual phase；The country is in list
Pure today for focusing on fluidized-bed combustion boiler enlargement, also gradually the above problem is started to pay attention to, but studied in numerical simulation
Calculation stages, individual cycle fluidized-bed combustion boiler have carried out separator inlet flue necking transformation, but to the effect of bed temperature deviation reduction
Fruit is very little；Boiler operatiopn personnel can only be inclined to extenuate bed temperature by adjusting the size of the 8 feeder difference coal-supplying amounts in stokehold
Difference, effect are also only to rest on the deviation between intermediate bed temperature and left and right ends bed temperature to reduce between 10-15 DEG C.Therefore, disappear
Except Circulating Fluidized Bed Temperature deviation is to NO caused by reduction localized hyperthermiaXThe amount of being originally generated improves the whole fluidisation of material
Effect is very important.
Invention content
It is recycled in view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of eliminate
The method of fluidized-bed combustion boiler bed temperature deviation, step is simple and realizes convenient, elimination bed temperature deviation, caused by reducing localized hyperthermia
NOXThe amount of being originally generated improves the whole fluid effect of material, highly practical.
In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of elimination Circulating Fluidized Bed Temperature
The method of deviation, the lower furnace portion of the circulating fluidized bed boiler are equipped with fluid bed, and the fluid bed includes air distribution plate and multiple
The blast cap on the air distribution plate is laid in multiple lines and multiple rows, is set per sector-style cap by one side wall of burner hearth to burner hearth opposite side wall paper, often
Row blast cap is set by wall paper after burner hearth front wall to burner hearth, it is characterised in that this method includes the following steps：
Step 1: the laying of temperature point and temperature sensor installation：It is set along the width direction interval of the burner hearth front wall
Put multiple preceding temperature points, and temperature sensor before being installed on multiple preceding temperature points respectively；
The width direction of wall is arranged at intervals multiple rear temperature points after along the burner hearth, and respectively in multiple rear temperature
Temperature sensor after being installed on measuring point；
Step 2: in blast cap it is required install additional round steel quantity and diameter calculating, specifically include following steps：
Step 201, using data processor according to formulaObtain the air quantity Q of single blast capf, wherein, QzTo follow
The primary air flow of circulation fluidized bed boiler, nfSum for blast cap；
Step 202, using data processor according to formulaObtain the wind speed V of single blast capf, wherein, PwFor
The primary air pressure of circulating fluidized bed boiler；
Step 203, using data processor according to formulaAnd combine the single blast cap obtained in step 201
Air quantity QfWith the wind speed V of single blast cap obtained in step 202f, obtain the flow area M of single blast capf；
Step 204, using data processor according to formulaAnd combine the list obtained in step 203
The flow area M of a blast capf, obtain the required diameter d for installing round steel additional in single blast capg, wherein, SfBlast pipe for blast cap
Flow area；
Step 205, using data processor according to formulaAnd it is obtained in combination step 202 single
The wind speed V of blast capf, the quantity n of installation round steel needed for blast cap is obtained, wherein, ε is single round steel resistance coefficient, and the value of ε is
2.5×10-5；
Step 3: installing round steel in blast cap additional, detailed process is：
Step 301, setting blast cap need loading area, and the blast cap needs loading area to be located at away from burner hearth front wall m rows and away from stove
After thorax between wall m rows, and the blast cap needs loading area to be located at away from one side wall p of burner hearth row and away between another side wall p row of burner hearth；
Wherein, m is positive integer, and 3≤m≤5, p are positive integer, and 21≤p≤25；
N round steel point is welded in the n blast cap that the blast cap is needed in loading area by step 302；Wherein, the blast cap
The blast cap number in loading area is needed to be more than n, the round steel is located at the blast pipe entrance of the blast cap；
Step 4: the adjustment of the round steel installed additional in blast cap and maximum bed temperature deviation output：
After the completion of installing round steel additional in step 401, blast cap, start circulating fluidized bed boiler normal work, multiple preceding temperature pass
Sensor is respectively detected the temperature at preceding temperature point each on burner hearth front wall, and the multiple preceding temperature points that will be detected
The temperature at place is sent to data processor, meanwhile, multiple rear temperature sensors are respectively to rear temperature point each on wall after burner hearth
The temperature at place is detected, and the temperature at the multiple rear temperature points detected is sent to data processor；
Step 402, data processor are by the temperature at the multiple preceding temperature points received according to sequence from small to large
Sequence, temperature point maximum value and preceding temperature point minimum value before acquisition, data processor survey the multiple rear temperature received
Temperature at point sorts according to sequence from small to large, temperature point maximum value and rear temperature point minimum value after acquisition, data
Processor calls difference block to carry out mathematic interpolation to preceding temperature point maximum value and preceding temperature point minimum value, obtains preceding temperature
Difference, data processor call difference block to carry out mathematic interpolation to rear temperature point maximum value and rear temperature point minimum value,
Obtain rear temperature gap；
Step 403, data processor compare preceding temperature gap with rear temperature gap with temperature gap setting value respectively
Compared with when Current Temperatures difference is not less than temperature gap setting value not less than temperature gap setting value or rear temperature gap, to wind
The round steel installed additional in cap is adjusted, until preceding temperature gap is respectively less than temperature gap setting value with rear temperature gap；Otherwise, when
When preceding temperature gap and rear temperature gap are respectively less than temperature gap setting value, stop adjustment；
Preceding temperature gap and rear temperature gap are compared by step 404, data processor, if preceding temperature gap is more than
Temperature gap afterwards, then maximum bed temperature deviation is preceding temperature gap；If preceding temperature gap is less than rear temperature gap, maximum bed temperature
Deviation is rear temperature gap；If preceding temperature gap is equal to rear temperature gap, maximum bed temperature deviation for preceding temperature gap or
Temperature gap afterwards, the maximum bed temperature deviation of data processor controlled display output.
A kind of method of above-mentioned elimination Circulating Fluidized Bed Temperature deviation, it is characterised in that：The length of the round steel
0.4~0.6 times of the internal diameter of blast pipe for the blast cap.
A kind of method of above-mentioned elimination Circulating Fluidized Bed Temperature deviation, it is characterised in that：The round steel by
12Cr18Ni9 is made.
A kind of method of above-mentioned elimination Circulating Fluidized Bed Temperature deviation, it is characterised in that：To blast cap in step 403
The round steel of interior installation is adjusted, and detailed process is as follows：First, circulating fluidized bed boiler is run and stopped, being installed additional in blast cap
Round steel removed；Then, the round steel of dismounting point is welded in the blast cap needs not installing additional in loading area in the blast cap of round steel,
Restart circulating fluidized bed boiler operation, repeat step 401 to step 403.
Compared with the prior art, the present invention has the following advantages：
1st, method and step of the invention is simple, reasonable design, and it is convenient and easy for installation to realize, at low cost.
2nd, the circle of the invention by being welded with certain amount and size to the blast cap blast pipe on the air distribution plate of intermediate Reasonable area domain
Steel can be very good to control the bed temperature deviation of fluid bed within 30-35 DEG C.
3rd, the present invention is to carry out the laying of temperature point and temperature sensor installation according to the size of bed surface width first,
Later, the required quantity and diameter for installing round steel additional in blast cap is calculated, then, round steel is installed in blast cap；Finally, blast cap is adjusted
The round steel of interior installation, until preceding temperature gap is respectively less than temperature gap setting value with rear temperature gap, data processor controlled is shown
Show that device exports preceding temperature gap and rear temperature gap, eliminate Circulating Fluidized Bed Temperature deviation.
In conclusion step of the present invention is simple and realizes conveniently, by loading area being needed to install round steel additional in blast cap, change most
Big bed temperature deviation solves the problems, such as that Circulating Fluidized Bed Temperature is small in the end and big in the middle, reduces NO caused by localized hyperthermiaX
The amount of being originally generated improves the whole fluid effect of material, highly practical.
Below by drawings and examples, technical scheme of the present invention is described in further detail.
Description of the drawings
Fig. 1 is the schematic block circuit diagram of the present invention.
Fig. 2 is the flow diagram of the present invention.
Reference sign:
1-preceding temperature sensor；2-rear temperature sensor；3-data processor；
4-display.
Specific embodiment
As depicted in figs. 1 and 2, the method that the present invention eliminates Circulating Fluidized Bed Temperature deviation, the recirculating fluidized bed
The lower furnace portion of boiler is equipped with fluid bed, and the fluid bed includes air distribution plate and multiple is laid in the air distribution plate in multiple lines and multiple rows
On blast cap, set by one side wall of burner hearth to burner hearth opposite side wall paper per sector-style cap, each column blast cap is by wall after burner hearth front wall to burner hearth
It lays, this method includes the following steps：
Step 1: the laying of temperature point and temperature sensor installation：It is set along the width direction interval of the burner hearth front wall
Put multiple preceding temperature points, and temperature sensor 1 before being installed on multiple preceding temperature points respectively；
The width direction of wall is arranged at intervals multiple rear temperature points after along the burner hearth, and respectively in multiple rear temperature
Temperature sensor 2 after being installed on measuring point；
Step 2: in blast cap it is required install additional round steel quantity and diameter calculating, specifically include following steps：
Step 201, using data processor 3 according to formulaObtain the air quantity Q of single blast capf, wherein, QzFor
The primary air flow of circulating fluidized bed boiler, nfSum for blast cap；
Step 202, using data processor 3 according to formulaObtain the wind speed V of single blast capf, wherein, PwFor
The primary air pressure of circulating fluidized bed boiler；
Step 203, using data processor 3 according to formulaAnd combine the single blast cap obtained in step 201
Air quantity QfWith the wind speed V of single blast cap obtained in step 202f, obtain the flow area M of single blast capf；
Step 204, using data processor 3 according to formulaAnd combine the list obtained in step 203
The flow area M of a blast capf, obtain the required diameter d for installing round steel additional in single blast capg, wherein, SfBlast pipe for blast cap
Flow area；
Step 205, using data processor 3 according to formulaAnd combine the list obtained in step 202
The wind speed V of a blast capf, obtain installing additional needed for blast cap the quantity n of round steel, wherein, ε is single round steel resistance coefficient, and the value of ε
It is 2.5 × 10-5；
Step 3: installing round steel in blast cap additional, detailed process is：
Step 301, setting blast cap need loading area, and the blast cap needs loading area to be located at away from burner hearth front wall m rows and away from stove
After thorax between wall m rows, and the blast cap needs loading area to be located at away from one side wall p of burner hearth row and away between another side wall p row of burner hearth；
Wherein, m is positive integer, and 3≤m≤5, p are positive integer, and 21≤p≤25；
N round steel point is welded in the n blast cap that the blast cap is needed in loading area by step 302；Wherein, the blast cap
The blast cap number in loading area is needed to be more than n, the round steel is located at the blast pipe entrance of the blast cap；
Step 4: the adjustment of the round steel installed additional in blast cap and maximum bed temperature deviation output：
After the completion of installing round steel additional in step 401, blast cap, start circulating fluidized bed boiler normal work, multiple preceding temperature pass
Sensor 1 is respectively detected the temperature at preceding temperature point each on burner hearth front wall, and the multiple preceding temperature detected are surveyed
Temperature at point is sent to data processor 3, meanwhile, multiple rear temperature sensors 2 are respectively to rear temperature each on wall after burner hearth
Temperature at measuring point is detected, and the temperature at the multiple rear temperature points detected is sent to data processor 3；
Step 402, data processor 3 are by the temperature at the multiple preceding temperature points received according to sequence from small to large
Sequence, temperature point maximum value and preceding temperature point minimum value before acquisition, data processor 3 survey the multiple rear temperature received
Temperature at point sorts according to sequence from small to large, temperature point maximum value and rear temperature point minimum value after acquisition, data
Processor 3 calls difference block to carry out mathematic interpolation to preceding temperature point maximum value and preceding temperature point minimum value, obtains preceding temperature
Difference is spent, data processor 3 calls difference block to carry out difference meter to rear temperature point maximum value and rear temperature point minimum value
It calculates, obtains rear temperature gap；
Step 403, data processor 3 compare preceding temperature gap with rear temperature gap with temperature gap setting value respectively
Compared with when Current Temperatures difference is not less than temperature gap setting value not less than temperature gap setting value or rear temperature gap, to wind
The round steel installed additional in cap is adjusted, until preceding temperature gap is respectively less than temperature gap setting value with rear temperature gap；Otherwise, when
When preceding temperature gap and rear temperature gap are respectively less than temperature gap setting value, stop adjustment；
Preceding temperature gap and rear temperature gap are compared by step 404, data processor 3, if preceding temperature gap is big
In rear temperature gap, then maximum bed temperature deviation is preceding temperature gap；If preceding temperature gap is less than rear temperature gap, maximum bed
Warm deviation is rear temperature gap；If preceding temperature gap is equal to rear temperature gap, maximum bed temperature deviation for preceding temperature gap or
Temperature gap after person, data processor 3 control display 4 to export maximum bed temperature deviation.
In the present embodiment, the length of the round steel is 0.4~0.6 times of the internal diameter of the blast pipe of the blast cap.
In the present embodiment, the length for installing round steel needed for blast cap additional is determining according to blast cap air inlet bore, avoids justifying
The too long welding difficulty of steel it is larger and point be welded in it is unstable in blast cap blast pipe, so as to ensure that round steel is in water cooling wind on blast cap blast pipe
Indoor First air can stablize attachment under washing away, and the abnormal phenomenon such as will not fall off, deform.
In the present embodiment, the round steel is made of 12Cr18Ni9.
In the present embodiment, on the one hand, it is the another aspect because round steel is wear-resistant and corrosion-resistant made of 12Cr18Ni9,
It is made of because blast cap is also by 12Cr18Ni9, meets welding process requirement as possible using same material, convenient for welding.
In the present embodiment, the round steel installed additional in blast cap is adjusted in step 403, detailed process is as follows：First, it will follow
The operation of circulation fluidized bed boiler stops, and the round steel installed additional in blast cap is removed；Then, the round steel of dismounting point is welded in the wind
Cap needs not installing additional in loading area in the blast cap of round steel, restarts circulating fluidized bed boiler operation, repeats step 401 to step
403。
In the present embodiment, by circulating fluidized bed boiler certain load air quantity, emulsion zone oxygen amount, entirety and office next time
The great number tested data statistical analysis of relationship, obtains " non-between portion's air distribution plate resistance and fluidized bed temperature distribution, bed pressure fluctuation
Artificial interference of the linear fluid in fixed space makes First air blast cap forward position horizontal direction pressure on air distribution plate is entered equal
Enter blast cap blast pipe, the ventilation quantity of unit area is in entire bed surface approximately equal " conclusion, therefore, by centre close
Blast cap blast pipe on reason region air distribution plate is welded with the round steel of certain amount and size, can be very good the bed temperature of fluid bed is inclined
Difference control is in the reasonable scope.
In the present embodiment, pass through deep layer mechanism and influence factor to air distribution plate resistance, circulating fluidized bed boiler air distribution plate
The upper blast cap characteristic and Heat Transfer in Furnace performance of circulating fluidized bed boiler, circulating fluidized bed boiler solid circulating rate research and numerical value
Simulate water cooled wind chamber static pressure distribution influences experimental study to bed temperature deviation, and experience is adjusted by circulating fluidized bed boiler, recycles
The certain load of Fluidized Bed Boiler corresponds to certain primary air flow, and certain primary air flow corresponds to certain wind pressure.
In the present embodiment, in actual installation process, the round steel setting angle there are certain requirements, i.e., the center line of round steel with
The centerline parallel of the blast pipe of blast cap improves circulating resistance under the premise of material is saved to the full extent, increases welding surface
Area；In addition, when round steel is installed, the blast pipe of blast cap is stretched out in one end of round steel, easy for removal and installation.
In the present embodiment, further preferably, m 4, p 23 reduces the scope, and reduces the adjustment of round steel.
In the present embodiment, the value range of the temperature gap setting value is 30 DEG C~40 DEG C.
In the present embodiment, further preferably, the temperature gap setting value is 35 DEG C.
In the present embodiment, further preferably, the quantity of the preceding temperature point and rear temperature point is 10.
In the present embodiment, for 150MW circulating fluidized bed boilers, as shown in table 1, the temperature results obtained before improvement such as table
Shown in 1：
The temperature at preceding temperature point before the improvement of table 1 and the temperature at rear temperature point
Can be obtained from table 1, for 150MW circulating fluidized bed boilers, preceding temperature maximum (917 DEG C) before improvement and before
The difference of temperature minimum value (716 DEG C) is 201 DEG C, the difference of rear temperature maximum (907 DEG C) and rear temperature minimum value (708 DEG C)
It it is 199 DEG C, then maximum bed temperature deviation is 201 DEG C, and maximum bed temperature deviation up to 200 DEG C or so, lead by the distribution of higher intermediate bed temperature
Caused Load of Circulating Fluidized Bed Boiler can only band to 80% boiler maximum continuous rating (BMCR).
In the present embodiment, for 150MW circulating fluidized bed boilers, as shown in table 2, using method using the present invention, change
The temperature results obtained after are as shown in table 2：
Temperature at the improved preceding temperature point of table 2 and the temperature at rear temperature point
It can be obtained from table 2, for 150MW circulating fluidized bed boilers, method using the present invention, preceding temperature maximum
The difference of (839 DEG C) and preceding temperature minimum value (805 DEG C) is 34 DEG C, rear temperature maximum (855 DEG C) and preceding temperature minimum value
The difference of (839 DEG C) is 16 DEG C, then maximum bed temperature deviation is 34 DEG C, and maximum bed temperature deviation is reduced to 34 DEG C or so by 200 DEG C,
Balanced bed temperature distribution can make Load of Circulating Fluidized Bed Boiler bring to 100% boiler maximum continuous rating (BMCR), transformation
Effect is fairly obvious.
In conclusion step of the present invention is simple and realizes conveniently, by loading area being needed to install round steel additional in blast cap, change most
Big bed temperature deviation solves the problems, such as that Circulating Fluidized Bed Temperature is small in the end and big in the middle, reduces NO caused by localized hyperthermiaX
The amount of being originally generated improves the whole fluid effect of material, highly practical.
The above is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and the equivalent structure that technical spirit makees above example change, and still fall within skill of the present invention
In the protection domain of art scheme.
Claims (4)
1. a kind of method for eliminating Circulating Fluidized Bed Temperature deviation, the lower furnace portion of the circulating fluidized bed boiler is equipped with stream
Change bed, the fluid bed include air distribution plate and it is multiple be laid in blast cap on the air distribution plate in multiple lines and multiple rows, per sector-style cap by
One side wall of burner hearth to burner hearth opposite side wall paper is set, and each column blast cap is set by wall paper after burner hearth front wall to burner hearth, it is characterised in that the party
Method includes the following steps：
Step 1: the laying of temperature point and temperature sensor installation：It is arranged at intervals along the width direction of the burner hearth front wall more
A preceding temperature point, and respectively on multiple preceding temperature points install before temperature sensor (1)；
The width direction of wall is arranged at intervals multiple rear temperature points after along the burner hearth, and respectively in multiple rear temperature points
Temperature sensor (2) after upper installation；
Step 2: in blast cap it is required install additional round steel quantity and diameter calculating, specifically include following steps：
Step 201, using data processor (3) according to formulaObtain the air quantity Q of single blast capf, wherein, QzFor cycle
The primary air flow of fluidized-bed combustion boiler, nfSum for blast cap；
Step 202, using data processor (3) according to formulaObtain the wind speed V of single blast capf, wherein, PwTo follow
The primary air pressure of circulation fluidized bed boiler；
Step 203, using data processor (3) according to formulaAnd combine the single blast cap obtained in step 201
Air quantity QfWith the wind speed V of single blast cap obtained in step 202f, obtain the flow area M of single blast capf；
Step 204, using data processor (3) according to formulaAnd it is obtained in combination step 203 single
The flow area M of blast capf, obtain the required diameter d for installing round steel additional in single blast capg, wherein, SfBlast pipe for blast cap it is logical
Flow area；
Step 205, using data processor (3) according to formulaAnd combine the single wind obtained in step 202
The wind speed V of capf, the quantity n of installation round steel needed for blast cap is obtained, wherein, ε is single round steel resistance coefficient, and the value of ε is
2.5×10-5；
Step 3: installing round steel in blast cap additional, detailed process is：
After step 301, setting blast cap need loading area, the blast cap that loading area is needed to be located at away from burner hearth front wall m rows and away from burner hearth
Between wall m rows, and the blast cap needs loading area to be located at away from one side wall p of burner hearth row and away between another side wall p row of burner hearth；Its
In, m is positive integer, and 3≤m≤5, p are positive integer, and 21≤p≤25；
N round steel point is welded in the n blast cap that the blast cap is needed in loading area by step 302；Wherein, the blast cap need to add
The blast cap number filled in region is more than n, and the round steel is located at the blast pipe entrance of the blast cap；
Step 4: the adjustment of the round steel installed additional in blast cap and maximum bed temperature deviation output：
After the completion of installing round steel additional in step 401, blast cap, start circulating fluidized bed boiler normal work, multiple preceding temperature sensors
(1) temperature at preceding temperature point each on burner hearth front wall is detected respectively, and the multiple preceding temperature points that will be detected
The temperature at place is sent to data processor (3), meanwhile, multiple rear temperature sensors (2) are respectively to rear temperature each on wall after burner hearth
Temperature at degree measuring point is detected, and the temperature at the multiple rear temperature points detected is sent to data processor (3)；
Step 402, data processor (3) arrange the temperature at the multiple preceding temperature points received according to sequence from small to large
Sequence, temperature point maximum value and preceding temperature point minimum value before acquisition, data processor (3) survey the multiple rear temperature received
Temperature at point sorts according to sequence from small to large, temperature point maximum value and rear temperature point minimum value after acquisition, data
Processor (3) calls difference block to carry out mathematic interpolation to preceding temperature point maximum value and preceding temperature point minimum value, before obtaining
Temperature gap, it is poor that data processor (3) calls difference block to carry out rear temperature point maximum value and rear temperature point minimum value
Value calculates, and obtains rear temperature gap；
Step 403, data processor (3) compare preceding temperature gap with rear temperature gap with temperature gap setting value respectively
Compared with when Current Temperatures difference is not less than temperature gap setting value not less than temperature gap setting value or rear temperature gap, to wind
The round steel installed additional in cap is adjusted, until preceding temperature gap is respectively less than temperature gap setting value with rear temperature gap；Otherwise, when
When preceding temperature gap and rear temperature gap are respectively less than temperature gap setting value, stop adjustment；
Preceding temperature gap and rear temperature gap are compared by step 404, data processor (3), if preceding temperature gap is more than
Temperature gap afterwards, then maximum bed temperature deviation is preceding temperature gap；If preceding temperature gap is less than rear temperature gap, maximum bed temperature
Deviation is rear temperature gap；If preceding temperature gap is equal to rear temperature gap, maximum bed temperature deviation for preceding temperature gap or
Temperature gap afterwards, data processor (3) control display (4) export maximum bed temperature deviation.
2. a kind of method for eliminating Circulating Fluidized Bed Temperature deviation described in accordance with the claim 1, it is characterised in that：It is described
The length of round steel is 0.4~0.6 times of the internal diameter of the blast pipe of the blast cap.
3. according to a kind of method of elimination Circulating Fluidized Bed Temperature deviation described in claims 1 or 2, it is characterised in that：
The round steel is made of 12Cr18Ni9.
4. according to a kind of method of elimination Circulating Fluidized Bed Temperature deviation described in claims 1 or 2, it is characterised in that：
The round steel installed additional in blast cap is adjusted in step 403, detailed process is as follows：First, circulating fluidized bed boiler operation is stopped
Only, the round steel installed additional in blast cap is removed；Then, the round steel of dismounting point is welded in the blast cap needs not add in loading area
In the blast cap for filling round steel, restart circulating fluidized bed boiler operation, repeat step 401 to step 403.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073601.3A CN108253415B (en) | 2018-01-25 | 2018-01-25 | A method of eliminating Circulating Fluidized Bed Temperature deviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073601.3A CN108253415B (en) | 2018-01-25 | 2018-01-25 | A method of eliminating Circulating Fluidized Bed Temperature deviation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108253415A true CN108253415A (en) | 2018-07-06 |
| CN108253415B CN108253415B (en) | 2019-06-14 |
Family
ID=62743179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810073601.3A Expired - Fee Related CN108253415B (en) | 2018-01-25 | 2018-01-25 | A method of eliminating Circulating Fluidized Bed Temperature deviation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108253415B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3494046A (en) * | 1967-11-20 | 1970-02-10 | Union Carbide Corp | Fluid bed drying system |
| CN101329582A (en) * | 2008-07-18 | 2008-12-24 | 东南大学 | Method for optimizing and diagnosing circulating fluid bed boiler combustion |
| CN106122952A (en) * | 2016-08-17 | 2016-11-16 | 山西平朔煤矸石发电有限责任公司 | A kind of CFB boiler nested type blast cap air-distribution device and remodeling method thereof |
| CN106439799A (en) * | 2016-04-12 | 2017-02-22 | 无锡华光锅炉股份有限公司 | Air distribution structure of circulating fluidized bed boiler |
-
2018
- 2018-01-25 CN CN201810073601.3A patent/CN108253415B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3494046A (en) * | 1967-11-20 | 1970-02-10 | Union Carbide Corp | Fluid bed drying system |
| CN101329582A (en) * | 2008-07-18 | 2008-12-24 | 东南大学 | Method for optimizing and diagnosing circulating fluid bed boiler combustion |
| CN106439799A (en) * | 2016-04-12 | 2017-02-22 | 无锡华光锅炉股份有限公司 | Air distribution structure of circulating fluidized bed boiler |
| CN106122952A (en) * | 2016-08-17 | 2016-11-16 | 山西平朔煤矸石发电有限责任公司 | A kind of CFB boiler nested type blast cap air-distribution device and remodeling method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108253415B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107166429B (en) | A kind of boiler furnace flame central position monitoring method | |
| CN103267684B (en) | A kind of station boiler pressure restraining element life consumption acquisition methods and system | |
| CN103955599B (en) | Acquisition method of combustion characteristic under different circumference air quantities after boiler improvement | |
| CN111853747A (en) | Cylindrical low-nitrogen energy-saving pressure-bearing water pipe boiler | |
| CN108220513A (en) | Energy Conservation of Blast Furnace furnace retaining method | |
| CN110184445A (en) | A kind of test method of furnace trial device | |
| CN108534118A (en) | A kind of overcritical or ultra supercritical water wall of monotube boiler structure | |
| CN115374636A (en) | Boiler numerical simulation and performance calculation coupled wall temperature prediction method | |
| CN102374658B (en) | Angular pipe water circulating structure with complete forced upward flowing on heating surface | |
| CN105509035B (en) | A kind of method, apparatus and automatic control system of determining opposed firing intake | |
| CN209512282U (en) | A kind of gas-fired condensing boiler multi-temperature zone heating installation | |
| CN108253415B (en) | A method of eliminating Circulating Fluidized Bed Temperature deviation | |
| CN102853448B (en) | Optimization method for combustion system of slab heat accumulating type heating furnace | |
| CN102980740B (en) | Turbulent burner cold air dynamic field measuring method and exclusive surveying instrument | |
| CN107502694A (en) | A kind of shaft furnace inlet duct and shaft furnace air inlet method | |
| CN106282529B (en) | A kind of hot-rolling heating furnace slab fuel metering method | |
| CN104359223B (en) | System and method using exhaust steam in steam turbine as steam air heater of utility boiler thermal medium | |
| CN105352174B (en) | A kind of larger gas hot-water boiler | |
| CN205746769U (en) | A kind of pulverized-coal fired boiler | |
| CN105299894A (en) | Gas-fired hot water boiler air circulation energy saving system | |
| CN205156347U (en) | Gas -fired hot water boiler air cycle economizer system | |
| CN207035095U (en) | A kind of easy coking area of main burner solves coking structure | |
| CN205208690U (en) | Gas -fired hot water boiler water route circulation economizer system | |
| CN102798114B (en) | Method for arranging water-cooled wall of vertical pipe panel of internal thread pipe with non-uniform caliber | |
| CN208365509U (en) | A kind of DHS corner tube type fuel-firing gas-firing steam boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 Termination date: 20210125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |