CN108613896B - Coal-fired electric generation furnace flying marking quantity measuring method - Google Patents
Coal-fired electric generation furnace flying marking quantity measuring method Download PDFInfo
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Abstract
The invention discloses a kind of coal-fired electric generation furnace flying marking quantity measuring methods, belong to unburned carbon in flue dust detection technique field.Coal-fired electric generation furnace flying marking quantity measuring method of the invention, comprising the following steps: step A: solid particle addition；Step B: primary vibration；Step C: primary weighing；Step D: flying dust addition；Step E: secondary vibration；Step F: dry；Step G: secondary weighing；Step H: calcination；Step I:CO2Content detection；Step J: tail gas discharge.It is an object of the invention to overcome the shortcomings of that the measurement accuracy of existing coal-fired electric generation furnace unburned carbon in flue dust detection technique and reliability be not high, a kind of coal-fired electric generation furnace flying marking quantity measuring method is provided, the accuracy and reliability of flying marking measurement is improved.
Description
Technical field
The present invention relates to unburned carbon in flue dust detection technique fields, more specifically to a kind of coal-fired electric generation furnace flying dust
Carbon containing quantity measuring method.
Background technique
Unburned carbon in flue dust is the important operating index of coal-fired electric generation furnace and economic indicator, according to the flying marking detected
Amount, can be improved the efficiency of combustion of coal-fired electric generation furnace, to reduce coal consumption, be improved boiler operatiopn with timely adjustment coal-air ratio
Economy.Currently, mainly using the combustibility and high dielectric constant of the physics and chemical property of carbon, such as carbon, it is winged to detect
Grey phosphorus content.The detection method of unburned carbon in flue dust can be mainly divided into microwave method, optical emitting method, Infrared Detection Method, thermogravimetric point
The methods of analysis method and calcination carbon loss method.
Currently, mostly using lead screw to add stepper motor and rotation in the flying marking amount detecting device based on calcination carbon loss method
Pallet is as ash sample transport mechanism, and in the ash sample transport mechanism, stepper motor and rotary-tray are driven by belt, are passed through
Step motor control rotary-tray, then crucible is transported to below designated position by rotary-tray；Stepper motor and lead screw pass through
Shaft coupling is attached, and drives lead screw by the rotation of stepper motor, crucible is sent to designated position, complete to receive ash, ash discharge, title
Weight and calcination.But such flying marking amount detecting device, ash sample carry out being easy to produce sintering phenomenon when calcination, cause to fly
Ash can not be discharged, and influence equipment normal operation and testing result, while each calcination sampling amount is less, testing result is sampled
Process is affected, and testing result reliability is not high.
In flying marking amount detecting device based on microwave method, the ash sample in flue is collected into sampling bottle using hitting
It is interior, uncombusted carbon particle is contained in boiler fly ash, since carbon is conductive, it has absorption to microwave, can pass through
Measuring device carries out microwave measurement, and under ash sample as much, phosphorus content is more, also more to the absorption of microwave；Conversely, carbon containing
Amount is fewer, also fewer to the absorption of microwave.But such detection mode is needed by manually once being changed to same flying dust sample
Credit analysis, measures the absolute value of phosphorus content, is once demarcated to microwave detection equipment, such microwave detection equipment is just capable of measuring
The absolute value of unburned carbon in flue dust out, therefore be affected by coal type change, it is often necessary to be demarcated, measurement accuracy and can
It is not high by property.
Have a large amount of related patents files about unburned carbon in flue dust detection technique in the prior art to disclose, such as patent disclosure
Number: 103822880 A of CN, publication date: on May 28th, 2014, invention and created name are as follows: flying marking measuring method and be
System, this application discloses a kind of flying marking measuring methods, comprising the following steps: collects flying dust so that institute by sampler
It states flying dust and forms flying dust layer on the sampler surface；When the thickness of the flying dust layer is greater than preset value, the flying dust is obtained
The hemisphere of layer or the spectral emissivity of normal direction；According to the spectral emissivity, the mark of unburned carbon in flue dust and spectral emissivity is utilized
Determine function and obtains the unburned carbon in flue dust in the flying dust.The flying marking measuring method of this application can online and real-time measurement
Boiler flyash carbon content has the advantages that measurement is accurate.But the testing result of the flying marking measuring method of this application
It is affected by coal type change, measurement accuracy and reliability be not high.
In conclusion how to overcome the measurement accuracy of existing coal-fired electric generation furnace unburned carbon in flue dust detection technique and reliable
The not high deficiency of property, be in the prior art urgent need to resolve the technical issues of.
Summary of the invention
1. technical problems to be solved by the inivention
It is an object of the invention to overcome the measurement accuracy of existing coal-fired electric generation furnace unburned carbon in flue dust detection technique and
The not high deficiency of reliability provides a kind of coal-fired electric generation furnace flying marking quantity measuring method, improves flying marking measurement
The accuracy and reliability of amount.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
Coal-fired electric generation furnace flying marking quantity measuring method of the invention, comprising the following steps:
Step A: solid particle addition；
Step B: primary vibration；
Step C: primary weighing；
Step D: flying dust addition；
Step E: secondary vibration；
Step F: dry；
Step G: secondary weighing；
Step H: calcination；
Step I:CO2Content detection；
Step J: tail gas discharge.
As further improvement of the present invention, in step A, it gets out coal-fired electric generation furnace flying marking amount detection device
It sets, calcination container is transported to below solid particle container by lifting rotation pallet, solenoid valve one, rapping valve is opened and opens
Valve closing is tapped by the blanking channel that rapping valve is connected to solid particle container lower end, so that in solid particle container
Al2O3Solid particle falls into the inside of inner cylinder from feeding inlet.
In step B, calcination container is placed on shaking platform, is vibrated 3-5 minutes；
In step C, calcination container is transported on weighing piece by lifting rotation pallet, is weighed to calcination container,
The quality for obtaining calcination container at this time is mk；
In step D, calcination container is transported to by sample tap by lifting rotation pallet, from sample tap respectively to each ash charge
Mouth is passed through flying dust, controls the flying dust total amount that each sample tap is passed through and is greater than 50g；
In step E, calcination container is placed on shaking platform, is vibrated 3-5 minutes；
In step F, calcination container is transported in drying oven by lifting rotation pallet, closes machinery valve one, is opened
Solenoid valve three closes solenoid valve six, N is continually fed into drying oven2, it is then shut off solenoid valve three, controls adding in drying oven
Hot 200 DEG C of temperature maintenance is hereinafter, control heating time 1 minute or less；Calcination container is taken out out of drying oven after the completion of heating,
Close solenoid valve three, open solenoid valve six, by vacuum pump one by drying oven air and water vapour extract out；
In step G, calcination container is transported on weighing piece by lifting rotation pallet, is weighed to calcination container,
The quality for obtaining calcination container at this time is mz；
In step H, calcination container is transported in incinerator by lifting rotation pallet, closes machinery valve two, is opened
Solenoid valve two closes solenoid valve four, O is continually fed into incinerator2, it is then shut off solenoid valve two, controls adding in incinerator
Hot temperature maintains 800 DEG C or more, and control heating time continues 30 minutes or more；
In step I, after the completion of heating, solenoid valve four is opened, the gas in incinerator is pumped by sealing by vacuum pump three
In container, after puff duration is more than the second, solenoid valve four is closed, vacuum pump three stops working, and passes through CO2Concentration detector measures close
Seal CO in container2Content, and will test result and be sent to central control unit and calculated；
In step J, solenoid valve five is opened, the air in sealing container is extracted out by vacuum pump two, is then shut off electromagnetism
Valve five is prepared for measurement next time.
As further improvement of the present invention, the coal-fired electric generation furnace flying marking amount detecting device includes:
One end of drying oven, the drying oven is connect by pipeline with inert gas organization of supply, the other end of drying oven
It is connect by pipeline with vacuum pump one；
One end of incinerator, the incinerator is connect by pipeline with oxygen supply mechanism, and the other end of incinerator passes through
The other end of the connection of one end of pipeline and sealing container, sealing container is connect by pipeline with vacuum pump two；
Calcination container；
And lifting rotation pallet, the lifting rotation pallet is for transporting calcination container.
As further improvement of the present invention, the coal-fired electric generation furnace flying marking amount detecting device further include: Gu
Body container for granule and gas passage；The lower end of the solid particle container is communicated with blanking channel, and the blanking channel is equipped with
Open and close valve；Solenoid valve one and rapping valve, blanking channel described in the rapping valve face are successively arranged on the gas passage.
As further improvement of the present invention, the coal-fired electric generation furnace flying marking amount detecting device further include: point
Not Wei Yu the lifting rotation pallet transport weighing piece, sample tap and ash discharging hole in range.
As further improvement of the present invention, it is connected to the oxygen supply mechanism and the pipeline of the incinerator is equipped with
Solenoid valve two；The pipeline for being connected to the inert gas organization of supply and the drying oven is equipped with solenoid valve three；It is connected to described burn
It burns and is connected with solenoid valve four and vacuum pump three in turn on furnace and the pipeline of the sealing container；Be connected to the sealing container with it is described
The pipeline of vacuum pump two is equipped with solenoid valve five；The pipeline for being connected to the drying oven and the vacuum pump one is equipped with solenoid valve
Six.
As further improvement of the present invention, the bottom of the drying oven is equipped with machinery valve one, the incinerator
Bottom is equipped with machinery valve two.
As further improvement of the present invention, CO is equipped in the sealing container2Concentration detector.
As further improvement of the present invention, the calcination container includes:
Outer cylinder；
Inner cylinder, the inner cylinder are connected to the bottom of the outer barrel by support rod, passed through inside the inner cylinder several
Divides are each independent calcination channel up and down, and several through holes are equipped on every piece of demarcation plate；It is each described bright
The surrounding in burn through road is respectively equipped with several intercommunicating pores, is connected with one on each intercommunicating pore and is laterally extended pipe；The top of the inner cylinder
It is communicated with feeding inlet, the lower part of the feeding inlet is that the tapered channel of internal diameter, the top of the feeding inlet are in waiting from bottom to top
The channel of diameter；
And several longitudinally extending tubes, the longitudinally extending tube are sequentially connected the transverse direction on a calcination channel from bottom to top
Extension, the upper end of extension is connected separately with an ash charge mouth longitudinally in each, and the ash charge mouth is that internal diameter is gradually wealthy from bottom to top
Channel.
As further improvement of the present invention, the through hole aperture of the demarcation plate being located above thereon, which is greater than, to be located below
Demarcation plate through hole aperture thereon.
3. beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) present invention in actual use, is passed through Al to the inside of inner cylinder by the feeding inlet on inner cylinder2O3Solid particle, so
Calcination container is placed on shaking platform afterwards and is vibrated, so that Al2O3Solid particle is evenly distributed on each bright inside calcination container
In burn through road, then it is passed through flying dust to each ash charge mouth respectively and calcination container is placed on shaking platform and vibrate, so that flying dust
It is full and uniform in each calcination channel inside calcination container to spread out, and make flying dust and Al2O3Solid particle effectively mixes,
Wherein Al2O3With firm crystal structure, Al2O3Serve " skeleton ", meanwhile, Al2O3Fusing point is up to 2050 DEG C, in flying dust
In calcination fusion process, the sintering temperature of flying dust is improved, so as to avoid flying dust the phenomenon that calcination process mutually bonds, together
When promote C element in flying dust sufficiently and O2Haptoreaction improves the measurement accuracy of unburned carbon in flue dust.
(2) it in the present invention, controls the flying dust total amount that each sample tap is passed through and is greater than 50g, so that unburned carbon in flue dust detection
Sampling amount is obviously improved, so that testing result is influenced smaller by sampling process, testing result is representative and reliability is aobvious
Write enhancing, wherein be correspondingly each independent calcination channel up and down by several divides by inner cylinder inside, actually make
Used time can be passed through the flying dust of equivalent, to the ash charge mouth at the top of each longitudinally extending tube so as to effectively disperse a large amount of flying dusts
In each calcination channel, while several through holes are equipped on every piece of demarcation plate, the surrounding in each calcination channel is distinguished
Equipped with several intercommunicating pores, so that the flying dust dispersed in each calcination channel is sufficiently and O2Haptoreaction improves flying marking
The measurement accuracy of amount.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the overlooking structure diagram of coal-fired electric generation furnace flying marking amount detecting device in embodiment；
Fig. 2 is the schematic cross-sectional view of drying oven in embodiment；
Fig. 3 is the schematic cross-sectional view of solid particle container in embodiment；
Fig. 4 is the schematic cross-sectional view of incinerator in embodiment；
Fig. 5 is the schematic cross-sectional view of sealing container in embodiment；
Fig. 6 is the schematic cross-sectional view of calcination container in embodiment；
Fig. 7 is the overlooking structure diagram of calcination container in embodiment；
Fig. 8 is the flow chart of coal-fired electric generation furnace flying marking quantity measuring method in embodiment.
Label declaration in schematic diagram: 1, sample tap；2, ash discharging hole；3, lifting rotation pallet；4, calcination container；401, it props up
Strut；402, outer cylinder；403, inner cylinder；404, demarcation plate；405, through hole；406, feeding inlet；407, it is laterally extended pipe；408, it indulges
To extension；409, ash charge mouth；5, drying oven；6, solid particle container；7, incinerator；8, sealing container；9, solenoid valve two；
10, vacuum pump three；11, solenoid valve three；12, vacuum pump two；13, vacuum pump one；14, rapping valve；15, weighing piece；16, solenoid valve
One；17, solenoid valve four；18, solenoid valve five；19, solenoid valve six；20, machinery valve two；21,CO2Concentration detector；22, mechanical
Valve one.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Therefore, below to the embodiment of the present invention provided in the accompanying drawings
Detailed description be not intended to limit the range of claimed invention, but be merely representative of selected embodiment of the invention.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
To further appreciate that the contents of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1-7, the coal-fired electric generation furnace flying marking amount detecting device of the present embodiment, comprising: drying oven 5, it is dry
One end of furnace 5 is connect by pipeline with inert gas organization of supply, and the other end of drying oven 5 is connected by pipeline and vacuum pump 1
It connects；Incinerator 7, one end of incinerator 7 connects by pipeline with oxygen supply mechanism, the other end of incinerator 7 pass through pipeline and
One end of sealing container 8 connects, and the other end of sealing container 8 is connect by pipeline with vacuum pump 2 12；Calcination container 4；Lifting
Rotary-tray 3, the lifting rotation pallet 3 is for transporting calcination container 4；Solid particle container 6, the lower end of solid particle container 6
It is communicated with blanking channel, blanking channel is equipped with open and close valve；Gas passage；Solenoid valve 1 and vibration are successively arranged on gas passage
Beat valve 14,14 face blanking channel of rapping valve；And be located at lifting rotation pallet 3 transport range in weighing piece 15, take
Sample mouth 1 and ash discharging hole 2.
Wherein, the pipeline of connection oxygen supply mechanism and incinerator 7 is equipped with solenoid valve 29；It is connected to inert gas supply
The pipeline of mechanism and drying oven 5 is equipped with solenoid valve 3 11；It is connected in turn on connection incinerator 7 and the pipeline of sealing container 8
Solenoid valve 4 17 and vacuum pump 3 10；The pipeline of communication seals container 8 and vacuum pump 2 12 is equipped with solenoid valve 5 18；Connection is dry
The pipeline of dry furnace 5 and vacuum pump 1 is equipped with solenoid valve 6 19；The bottom of drying oven 5 is equipped with machinery valve 1, incinerator 7
Bottom be equipped with machinery valve 2 20；CO is equipped in sealing container 82Concentration detector 21 is passed data measured by signal wire
Pass central control unit.
Wherein, calcination container 4 includes: outer cylinder 402；Inner cylinder 403, inner cylinder 403 are connected to outer cylinder 402 by support rod 401
Internal bottom is divided into each independent calcination channel up and down by several demarcation plates 404 inside inner cylinder 403, and every piece is divided
Several through holes 405 are equipped on partition 404；The surrounding in each calcination channel is respectively equipped with several intercommunicating pores, each intercommunicating pore
On be connected with one and be laterally extended pipe 407；The top of inner cylinder 403 is communicated with feeding inlet 406, the lower part of feeding inlet 406 be from lower and
The tapered channel of upper internal diameter, the top of feeding inlet 406 are the channel of uniform internal diameter；And several longitudinally extending tubes 408, it is longitudinal to extend
What pipe 408 was sequentially connected from bottom to top on a calcination channel one is laterally extended pipe 407, longitudinally in each the upper end of extension 408 point
It is not connected with an ash charge mouth 409, ash charge mouth 409 is internal diameter gradually wealthy channel from bottom to top.The demarcation plate 404 being located above is thereon
405 aperture of through hole be greater than 405 aperture of through hole of underlying demarcation plate 404 thereon.
With reference to Fig. 8, the coal-fired electric generation furnace flying marking quantity measuring method of the present embodiment, comprising the following steps:
Step A: solid particle addition: coal-fired electric generation furnace flying marking amount detecting device is got out, lifting rotation is passed through
Calcination container 4 is transported to 6 lower section of solid particle container by pallet 3, is opened solenoid valve 1, rapping valve 14 and open and close valve, is led to
It crosses the blanking channel that rapping valve 14 is connected to 6 lower end of solid particle container to tap, so that the Al in solid particle container 62O3
Solid particle falls into the inside (Al in solid particle container 6 of inner cylinder 403 from feeding inlet 4062O3Solid particle is powdered granule,
And handled in advance by heat drying)；
Step B: primary vibration: calcination container 4 is placed on shaking platform, is vibrated 3-5 minutes；
Step C: calcination container 4: being transported on weighing piece 15 by primary weighing by lifting rotation pallet 3, is held to calcination
Device 4 is weighed, and the quality for obtaining calcination container 4 at this time is mk；
Step D: flying dust addition: calcination container 4 is transported to by sample tap 1 by lifting rotation pallet 3, is divided from sample tap 1
The flying dust of equivalent is not passed through to each ash charge mouth 409, the flying dust total amount that each sample tap 1 is passed through is controlled and is greater than 50g；
Step E: secondary vibration: calcination container 4 is placed on shaking platform, is vibrated 3-5 minutes；
Step F: dry: calcination container 4 being transported in drying oven 5 by lifting rotation pallet 3, closes machinery valve one
22, solenoid valve 3 11 is opened, solenoid valve 6 19 is closed, is continually fed into N into drying oven 52(so that maintaining N in drying oven 52Atmosphere
It encloses, to completely cut off O2, avoid in flying dust part C element in subsequent heat drying process with O2Oxidation reaction occurs, improves subsequent
The accuracy of ash sample weighing), it is then shut off solenoid valve 3 11, controls 200 DEG C of heating temperature maintenance in drying oven 5 hereinafter, control
Heating time 1 minute processed or less (remove the moisture in ash sample)；Calcination container 4 is taken out out of drying oven 5 after the completion of heating,
Close solenoid valve 3 11, open solenoid valve 6 19, by vacuum pump 1 by drying oven 5 air and water vapour extract out；
Step G: calcination container 4: being transported on weighing piece 15 by secondary weighing by lifting rotation pallet 3, is held to calcination
Device 4 is weighed, and the quality for obtaining calcination container 4 at this time is mz；
Step H: calcination container 4: being transported in incinerator 7 by calcination by lifting rotation pallet 3, closes machinery valve two
20, solenoid valve 29 is opened, solenoid valve 4 17 is closed, is continually fed into O into incinerator 72(enable flammable C element in flying dust
Enough full combustions generate CO2, while can also prevent the CO in air2Measurement result is had an impact, measurement accuracy is improved), so
Close solenoid valve 29 afterwards, control the heating temperature in incinerator 7 and maintain 800 DEG C or more, control heating time continue 30 minutes with
Above (so that the C element point reaction in flying dust generates CO2)；
Step I:CO2Content detection: after the completion of heating, opening solenoid valve 4 17, will be in incinerator 7 by vacuum pump 3 10
Gas be pumped into sealing container 8, after puff duration 15 seconds or more, close solenoid valve 4 17, vacuum pump 3 10 stops working, logical
Cross CO2Concentration detector 21 measures CO in sealing container 82Content, and will test result and be sent to central control unit and calculated
(thus the numerical value for obtaining unburned carbon in flue dust)；
Step J: tail gas discharge: opening solenoid valve 5 18, is extracted out the air in sealing container 8 by vacuum pump 2 12,
It is then shut off solenoid valve 5 18, is prepared for measurement next time.Calcination container 4 after completing detection passes through lifting rotation pallet 3
2 mouthfuls of ash discharging hole are transported to, the product after calcination is removed.
The mode of unburned carbon in flue dust takes every time substantially according to national standard in existing calcination carbon loss method detection coal-fired electric generation furnace
The flying dust of about 1g carries out phosphorus content detection, often has the following problems: (1) it is existing to be easy to produce sintering when carrying out calcination for flying dust
As causing flying dust that can not be discharged, influencing equipment normal operation and testing result；(2) each sampling amount of flying dust is less, detection knot
Fruit is affected by sampling process, and testing result is not representative.Therefore, existing calcination carbon loss method detects coal fired power generation pot
Its measurement accuracy of the mode of unburned carbon in flue dust and reliability are relatively low in furnace.In the present embodiment, design calcination container 4 is wrapped
It includes: outer cylinder 402；Inner cylinder 403, inner cylinder 403 are connected to the bottom inside outer cylinder 402 by support rod 401, lead to inside inner cylinder 403
It crosses several demarcation plates 404 and is divided into each independent calcination channel up and down, and be equipped with several through holes on every piece of demarcation plate 404
405；The surrounding in each calcination channel is respectively equipped with several intercommunicating pores, and one is connected on each intercommunicating pore and is laterally extended pipe 407；It is interior
The top of cylinder 403 is communicated with feeding inlet 406, and the lower part of feeding inlet 406 is the tapered channel of internal diameter from bottom to top, feeding inlet 406
Top be uniform internal diameter channel, in order to Al2O3The addition of solid particle；And several longitudinally extending tubes 408, it is longitudinal to extend
What pipe 408 was sequentially connected from bottom to top on a calcination channel one is laterally extended pipe 407, longitudinally in each the upper end of extension 408 point
It is not connected with an ash charge mouth 409, and the surrounding in each calcination channel is respectively equipped with several intercommunicating pores, is connected on each intercommunicating pore
One is laterally extended pipe 407 so that flying dust during calcination not from 403 internal drain of inner cylinder, ash charge mouth 409 be from bottom to top in
Diameter gradually wealthy channel, in order to the addition of flying dust and flying dust and O2Come into full contact with reaction, in actual use, pass through inner cylinder
Feeding inlet 406 on 403 is passed through Al to the inside of inner cylinder 4032O3Then calcination container 4 is placed on shaking platform by solid particle
Vibration, so that Al2O3Solid particle is evenly distributed in each calcination channel inside calcination container 4, then respectively to it is each enter
Grey mouth 409, which is passed through flying dust and calcination container 4 is placed on shaking platform, to be vibrated, so that flying dust is each inside calcination container 4
It is full and uniform in calcination channel to spread out, and make flying dust and Al2O3Solid particle effectively mixes, wherein Al2O3With firm crystalline substance
Body structure, Al2O3Serve " skeleton ", meanwhile, Al2O3Fusing point is up to 2050 DEG C, in the calcination fusion process of flying dust, improves
The sintering temperature of flying dust, so as to avoid flying dust the phenomenon that calcination process mutually bonds, while promoting the C element in flying dust
Sufficiently and O2Haptoreaction improves the measurement accuracy of unburned carbon in flue dust.
In the present embodiment, controls the flying dust total amount that each sample tap 1 is passed through and be greater than 50g, so that unburned carbon in flue dust detection
Sampling amount is obviously improved, so that testing result is influenced smaller by sampling process, testing result is representative and reliability is aobvious
Write enhancing, wherein correspondingly each independent calcination channel up and down will be divided by several demarcation plates 404 inside inner cylinder 403,
In actual use, it can be passed through the flying dust of equivalent, to the ash charge mouth 409 at 408 top of each longitudinally extending tube so as to will be a large amount of
Flying dust is effectively dispersed in each calcination channel, while several through holes 405 are equipped on every piece of demarcation plate 404, each
The surrounding in calcination channel is respectively equipped with several intercommunicating pores, so that the flying dust dispersed in each calcination channel is sufficiently and O2Contact is anti-
It answers, improves the measurement accuracy of unburned carbon in flue dust.Wherein, 405 hole of through hole of the demarcation plate 404 being located above thereon is designed
Diameter is greater than 405 aperture of through hole of underlying demarcation plate 404 thereon, so that Al2O3Solid particle and flying dust are in vibrator bar
It is evenly dispersed along the calcination channel being sequentially distributed from bottom to top under part, avoid Al2O3Solid particle and flying dust concentrations
In bottom calcination channel and influence the accuracy of flying marking measurement.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. coal-fired electric generation furnace flying marking quantity measuring method, which comprises the following steps:
Step A: solid particle addition；
In step A, coal-fired electric generation furnace flying marking amount detecting device is got out, is held calcination by lifting rotation pallet (3)
Device (4) is transported to below solid particle container (6), is opened solenoid valve one (16), rapping valve (14) and open and close valve, is passed through rapping
The blanking channel that valve (14) is connected to solid particle container (6) lower end taps, so that the Al in solid particle container (6)2O3
Solid particle falls into the inside of inner cylinder (403) from feeding inlet (406)；
Step B: primary vibration；
In step B, calcination container (4) is placed on shaking platform, is vibrated 3-5 minutes；
Step C: primary weighing；
In step C, calcination container (4) is transported on weighing piece (15) by lifting rotation pallet (3), to calcination container (4)
It weighs, the quality for obtaining calcination container (4) at this time is mk；
Step D: flying dust addition；
In step D, calcination container (4) is transported to by sample tap (1) by lifting rotation pallet (3), from sample tap (1) respectively to
Each ash charge mouth (409) is passed through flying dust, controls the flying dust total amount that each sample tap (1) is passed through and is greater than 50g；
Step E: secondary vibration；
In step E, calcination container (4) is placed on shaking platform, is vibrated 3-5 minutes；
Step F: dry；
In step F, calcination container (4) is transported in drying oven (5) by lifting rotation pallet (3), closes machinery valve one
(22), solenoid valve three (11) are opened, closed solenoid valve six (19), be continually fed into N into drying oven (5)2, it is then shut off solenoid valve
Three (11) control 200 DEG C of heating temperature maintenance in drying oven (5) hereinafter, control heating time 1 minute or less；Heating is completed
Calcination container (4) is taken out out of drying oven (5) afterwards, is closed solenoid valve three (11), opens solenoid valve six (19), passes through vacuum pump
One (13) by drying oven (5) air and water vapour extract out；
Step G: secondary weighing；
In step G, calcination container (4) is transported on weighing piece (15) by lifting rotation pallet (3), to calcination container (4)
It weighs, the quality for obtaining calcination container (4) at this time is mz；
Step H: calcination；
In step H, calcination container (4) is transported in incinerator (7) by lifting rotation pallet (3), closes machinery valve two
(20), solenoid valve two (9) are opened, closed solenoid valve four (17), be continually fed into O into incinerator (7)2, it is then shut off solenoid valve
Two (9) control the heating temperature in incinerator (7) and maintain 800 DEG C or more, and control heating time continues 30 minutes or more；
Step I:CO2Content detection；
It in step I, after the completion of heating, opens solenoid valve four (17), is taken out the gas in incinerator (7) by vacuum pump three (10)
Enter in sealing container (8), after puff duration 15 seconds or more, closes solenoid valve four (17), vacuum pump three (10) stops working, passes through
CO2Concentration detector () 21 measures CO in sealing container (8)2Content, and will test result and be sent to central control unit progress
It calculates；
Step J: tail gas discharge；
It in step J, opens solenoid valve five (18), the air in sealing container (8) is extracted out by vacuum pump two (12), is then closed
Solenoid valve five (18) is closed, is prepared for measurement next time.
2. coal-fired electric generation furnace flying marking quantity measuring method according to claim 1, it is characterised in that；The coal-fired hair
Electric boiler flying marking amount detecting device includes:
Drying oven (5), one end of the drying oven (5) are connect by pipeline with inert gas organization of supply, drying oven (5) it is another
One end is connect by pipeline with vacuum pump one (13)；
One end of incinerator (7), the incinerator (7) is connect by pipeline with oxygen supply mechanism, the other end of incinerator (7)
It is connect by pipeline with one end of sealing container (8), the other end of sealing container (8) is connected by pipeline and vacuum pump two (12)
It connects；
Calcination container (4)；
And lifting rotation pallet (3), the lifting rotation pallet (3) is for transporting calcination container (4).
3. coal-fired electric generation furnace flying marking quantity measuring method according to claim 2, it is characterised in that；The coal-fired hair
Electric boiler flying marking amount detecting device further include: solid particle container (6) and gas passage；The solid particle container (6)
Lower end be communicated with blanking channel, the blanking channel is equipped with open and close valve；Solenoid valve one is successively arranged on the gas passage
(16) and rapping valve (14), blanking channel described in rapping valve (14) face.
4. coal-fired electric generation furnace flying marking quantity measuring method according to claim 3, it is characterised in that；The coal-fired hair
Electric boiler flying marking amount detecting device further include: the weighing piece being located in lifting rotation pallet (3) the transport range
(15), sample tap (1) and ash discharging hole (2).
5. coal-fired electric generation furnace flying marking quantity measuring method according to claim 4, it is characterised in that: be connected to the oxygen
Gas organization of supply and the pipeline of the incinerator (7) are equipped with solenoid valve two (9)；It is connected to the inert gas organization of supply and institute
The pipeline for stating drying oven (5) is equipped with solenoid valve three (11)；It is connected to the pipeline of the incinerator (7) Yu the sealing container (8)
On be connected with solenoid valve four (17) and vacuum pump three (10) in turn；It is connected to the sealing container (8) and the vacuum pump two (12)
Pipeline be equipped with solenoid valve five (18)；The pipeline for being connected to the drying oven (5) and the vacuum pump one (13) is equipped with electromagnetism
Valve six (19).
6. coal-fired electric generation furnace flying marking quantity measuring method according to claim 5, it is characterised in that: the drying oven
(5) bottom is equipped with machinery valve one (22), and the bottom of the incinerator (7) is equipped with machinery valve two (20).
7. coal-fired electric generation furnace flying marking quantity measuring method according to claim 6, it is characterised in that: the sealing is held
CO is equipped in device (8)2Concentration detector (21).
8. according to coal-fired electric generation furnace flying marking quantity measuring method described in claim 2-7 any one, it is characterised in that；
The calcination container (4) includes:
Outer cylinder (402)；
Inner cylinder (403), the inner cylinder (403) is connected to the internal bottom of the outer cylinder (402) by support rod (401), described
Inner cylinder (403) is internal to be divided into each independent calcination channel, and every piece of demarcation plate up and down by several demarcation plates (404)
(404) several through holes (405) are equipped on；The surrounding in each calcination channel is respectively equipped with several intercommunicating pores, Mei Gelian
It is connected with one on through-hole and is laterally extended pipe (407)；Feeding inlet (406), the feeding inlet are communicated at the top of the inner cylinder (403)
(406) lower part is that the tapered channel of internal diameter, the top of the feeding inlet (406) are the channel of uniform internal diameter from bottom to top；
And several longitudinally extending tubes (408), the longitudinally extending tube (408) are sequentially connected from bottom to top on a calcination channel
One is laterally extended pipe (407), and the upper end of extension (408) is connected separately with an ash charge mouth (409), the ash charge mouth longitudinally in each
It (409) is the gradually wealthy channel of internal diameter from bottom to top.
9. coal-fired electric generation furnace flying marking quantity measuring method according to claim 8, which is characterized in that be located above
Through hole (405) aperture of demarcation plate (404) thereon is greater than through hole (405) hole of underlying demarcation plate (404) thereon
Diameter.
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| CN110749522B (en) * | 2019-11-13 | 2020-09-22 | 扎鲁特旗扎哈淖尔煤业有限公司 | Crushing type coal quality identification device |
| CN112748035B (en) * | 2020-11-18 | 2023-07-21 | 苏州西热节能环保技术有限公司 | Testing device and method for representing caking property of SCR denitration fly ash of power plant |
| CN113670765B (en) * | 2021-08-16 | 2021-12-24 | 江苏乐尔环境科技股份有限公司 | Fly ash carbon content detection device and detection method thereof |
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