CN108613896A - 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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- CN108613896A CN108613896A CN201810439258.XA CN201810439258A CN108613896A CN 108613896 A CN108613896 A CN 108613896A CN 201810439258 A CN201810439258 A CN 201810439258A CN 108613896 A CN108613896 A CN 108613896A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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.The coal-fired electric generation furnace flying marking quantity measuring method of the present invention, includes the following steps：Step A：Solid particle adds；Step B：Primary vibration；Step C：Once weigh；Step D：Flying dust adds；Step E：Secondary vibration；Step F：It is dry；Step G：Secondary weighing；Step H：Calcination；Step I：CO2Content detection；Step J：Tail gas is discharged.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 technology
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, is improved boiler operatiopn with timely adjustment coal-air ratio
Economy.Currently, mainly using the combustibility and high-k 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 leading screw in the flying marking amount detecting device based on calcination carbon loss method adds stepper motor and rotation
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 leading screw pass through
Shaft coupling is attached, and drives leading 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 easy ting 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 apparatus 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 is analysed, and is measured the absolute value of phosphorus content, is once demarcated to microwave detection equipment, such microwave detection equipment could measure
Go out the absolute value of unburned carbon in flue dust, 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：Flying marking measuring method and it is
System, this application discloses a kind of flying marking measuring methods, include the following steps：Flying dust is collected 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 more 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 measure online and in real time
Boiler flyash carbon content, it is accurate to have the advantages that measure.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.
Invention content
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 is：
The coal-fired electric generation furnace flying marking quantity measuring method of the present invention, includes the following steps：
Step A：Solid particle adds；
Step B：Primary vibration；
Step C：Once weigh；
Step D：Flying dust adds；
Step E：Secondary vibration；
Step F：It is dry；
Step G：Secondary weighing；
Step H：Calcination；
Step I：CO2Content detection；
Step J：Tail gas is discharged.
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, the blanking channel being connected to solid particle container lower end by rapping valve tap so that in solid particle container
Al2O3Solid particle falls into the inside of inner cylinder from feeding mouth.
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 more 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, 1 minute heating time of control 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 is stopped, and passes through CO2Concentration detector measures close
Seal CO in container2Content, and testing result is sent to central control unit and is 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 to measure 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 with vacuum pump one by pipeline；
One end of incinerator, the incinerator is connect by pipeline with oxygen supply mechanism, and the other end of incinerator passes through
One end of pipeline and sealing container connects, and the other end of 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 includes：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 are equipped on the gas passage successively, blanking channel described in the rapping valve face.
As further improvement of the present invention, the coal-fired electric generation furnace flying marking amount detecting device further includes：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 stove and is connected with solenoid valve four and vacuum pump three in turn on 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 barrel；
Inner cylinder, the inner cylinder are connected to the bottom of the outer barrel by supporting rod, by several inside the inner cylinder
Divides are each independent calcination channel up and down, and several through holes are equipped on every piece of demarcation strip；It is each described bright
The surrounding in burn through road is respectively equipped with several intercommunicating pores, and being connected with one on each intercommunicating pore is laterally extended pipe；The top of the inner cylinder
It is communicated with feeding mouth, the lower part of the feeding mouth is that the tapered channel of internal diameter, the top of the feeding mouth 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, longitudinally in each the upper end of extension be connected separately with an ash charge mouth, 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 strip that is located above thereon, which is more than, is located at lower section
Demarcation strip through hole aperture thereon.
3. advantageous effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result：
(1) present invention in actual use, Al is passed through by the feeding mouth on inner cylinder to the inside of 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 the flying dust phenomenon mutually cohesive in calcination process, together
When promote C element in flying dust fully 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 more 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 by inside inner cylinder by several divides be it is each up and down independent calcination channel, actually make
Used time can be passed through the flying dust of equivalent, so as to effectively disperse a large amount of flying dusts to the ash charge mouth at the top of each longitudinally extending tube
In each calcination channel, while several through holes are equipped on every piece of demarcation strip, the surrounding in each calcination channel is distinguished
Equipped with several intercommunicating pores so that the flying dust of dispersion is fully and O in each calcination channel2Haptoreaction improves flying marking
The measurement accuracy of amount.
Description of the drawings
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 barrel；403, inner cylinder；404, demarcation strip；405, through hole；406, feeding mouth；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 implementation mode
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, the embodiment of the present invention to providing in the accompanying drawings below
Detailed description be not intended to limit the range of claimed invention, but be merely representative of the present invention selected embodiment.
Based on the embodiments of the present invention, what those of ordinary skill in the art were obtained without creative efforts is all
Other embodiment shall fall within the protection scope of the present invention.
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to figure 1-7, the coal-fired electric generation furnace flying marking amount detecting device of the present embodiment, including：Drying oven 5, it is dry
One end of stove 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；One end of incinerator 7, incinerator 7 is connect by pipeline with oxygen supply mechanism, the other end of incinerator 7 by pipeline with
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 is equipped on gas passage successively and is shaken
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, connection oxygen supply mechanism and the pipeline of incinerator 7 are equipped with solenoid valve 29；It is connected to inert gas supply
Mechanism and the pipeline of drying oven 5 are equipped with solenoid valve 3 11；Connection incinerator 7 is connected in turn on the pipeline of sealing container 8
Solenoid valve 4 17 and vacuum pump 3 10；Communication seals container 8 and the pipeline of vacuum pump 2 12 are equipped with solenoid valve 5 18；Connection is dry
Dry stove 5 and the pipeline of vacuum pump 1 are 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 barrel 402；Inner cylinder 403, inner cylinder 403 are connected to outer barrel 402 by supporting rod 401
Internal bottom is divided into each independent calcination channel up and down, and every piece point inside inner cylinder 403 by several demarcation strips 404
Several through holes 405 are equipped on partition board 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 mouth 406, the lower part of feeding mouth 406 be from lower and
The tapered channel of upper internal diameter, the top of feeding mouth 406 are the channel of uniform internal diameter；And several longitudinally extending tubes 408, it is longitudinally extended
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 strip 404 being located above is thereon
405 aperture of through hole be more than 405 aperture of through hole of underlying demarcation strip 404 thereon.
With reference to figure 8, the coal-fired electric generation furnace flying marking quantity measuring method of the present embodiment includes the following steps：
Step A：Solid particle adds：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 mouth 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：Once weigh：Calcination container 4 is transported on weighing piece 15 by lifting rotation pallet 3, calcination is held
Device 4 is weighed, and the quality for obtaining calcination container 4 at this time is mk；
Step D：Flying dust adds：Calcination container 4 is transported to 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 more than 50g；
Step E：Secondary vibration：Calcination container 4 is placed on shaking platform, is vibrated 3-5 minutes；
Step F：It is dry：Calcination container 4 is 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, N is continually fed 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 follow-up
The accuracy that ash sample is weighed), it is then shut off solenoid valve 3 11, controls 200 DEG C of heating temperature maintenance in drying oven 5 hereinafter, control
1 minute heating time 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：Secondary weighing：Calcination container 4 is transported on weighing piece 15 by lifting rotation pallet 3, calcination is held
Device 4 is weighed, and the quality for obtaining calcination container 4 at this time is mz；
Step H：Calcination：Calcination container 4 is transported in incinerator 7 by lifting rotation pallet 3, closes machinery valve two
20, solenoid valve 29 is opened, solenoid valve 4 17 is closed, O is continually fed into incinerator 72(enable flammable C element in flying dust
Enough fully burnings 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, solenoid valve 4 17 is opened, it will be in incinerator 7 by vacuum pump 3 10
Gas be pumped into sealing container 8, after puff duration 15 seconds is above, close solenoid valve 4 17, vacuum pump 3 10 is stopped, logical
Cross CO2Concentration detector 21 measures CO in sealing container 82Content, and testing result is sent to central control unit and is calculated
(to obtain the numerical value of unburned carbon in flue dust)；
Step J：Tail gas is discharged：Solenoid valve 5 18 is opened, 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 to measure next time.It completes the calcination container 4 after detection and passes through lifting rotation pallet 3
It is transported to 2 mouthfuls of ash discharging hole, 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 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 stove.In the present embodiment, design calcination container 4 wraps
It includes：Outer barrel 402；Inner cylinder 403, inner cylinder 403 are connected to the bottom inside outer barrel 402 by supporting rod 401, and 403 inside of inner cylinder is logical
It crosses several demarcation strips 404 and is divided into each independent calcination channel up and down, and several through holes are equipped on every piece of demarcation strip 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 mouth 406, and the lower part of feeding mouth 406 is the tapered channel of internal diameter from bottom to top, feeding mouth 406
Top be uniform internal diameter channel, in order to Al2O3The addition of solid particle；And several longitudinally extending tubes 408, it is longitudinally extended
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 for flying dust not from 403 internal drain of inner cylinder during calcination, ash charge mouth 409 is interior from bottom to top
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 mouth 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 the flying dust phenomenon mutually cohesive in calcination process, while promoting the C element in flying dust
Fully 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 more 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 it will be divided into each independent calcination channel up and down by several demarcation strips 404 inside inner cylinder 403,
In actual use, the flying dust of equivalent can be passed through to the ash charge mouth 409 at the top of each longitudinally extending tube 408, so as to will be a large amount of
Flying dust is effectively dispersed in each calcination channel, while being equipped with several through holes 405 on every piece of demarcation strip 404, each
The surrounding in calcination channel is respectively equipped with several intercommunicating pores so that the flying dust of dispersion is fully and O in each calcination channel2Contact is anti-
It answers, improves the measurement accuracy of unburned carbon in flue dust.Wherein, 405 hole of through hole of the demarcation strip 404 being located above thereon is designed
Diameter is more than 405 aperture of through hole of underlying demarcation strip 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
The accuracy of flying marking measurement is influenced in the calcination channel of bottom.
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, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. coal-fired electric generation furnace flying marking quantity measuring method, which is characterized in that include the following steps：
Step A：Solid particle adds；
Step B：Primary vibration；
Step C：Once weigh；
Step D：Flying dust adds；
Step E：Secondary vibration；
Step F：It is dry；
Step G：Secondary weighing；
Step H：Calcination；
Step I：CO2Content detection；
Step J：Tail gas is discharged.
2. coal-fired electric generation furnace flying marking quantity measuring method according to claim 1, it is characterised in that；
In step A, coal-fired electric generation furnace flying marking amount detecting device is got out, by lifting rotation pallet 3 by calcination container 4
It is transported to 6 lower section of solid particle container, solenoid valve 1, rapping valve 14 and open and close valve are opened, by rapping valve 14 to solid
The blanking channel of 6 lower end of container for granule connection is tapped so that the Al in solid particle container 62O3Solid particle is from feeding mouth
406 fall into the inside of inner cylinder 403.
In step B, calcination container 4 is placed on shaking platform, is vibrated 3-5 minutes；
In step C, calcination container 4 is transported on weighing piece 15 by lifting rotation pallet 3, is weighed to calcination container 4,
The quality for obtaining calcination container 4 at this time is mk；
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 more than 50g；
In step E, calcination container 4 is placed on shaking platform, is vibrated 3-5 minutes；
In step F, calcination container 4 is transported in drying oven 5 by lifting rotation pallet 3, closes machinery valve 1, is opened
Solenoid valve 3 11 closes solenoid valve 6 19, N is continually fed into drying oven 52, it is then shut off solenoid valve 3 11, controls drying oven
200 DEG C of heating temperature maintenance in 5 is hereinafter, 1 minute heating time of control or less；By calcination container 4 from drying after the completion of heating
Take out in stove 5, close solenoid valve 3 11, open solenoid valve 6 19, by vacuum pump 1 by drying oven 5 air and water steam
Vapour is extracted out；
In step G, calcination container 4 is transported on weighing piece 15 by lifting rotation pallet 3, is weighed to calcination container 4,
The quality for obtaining calcination container 4 at this time is mz；
In step H, calcination container 4 is transported in incinerator 7 by lifting rotation pallet 3, closes machinery valve 2 20, is opened
Solenoid valve 29 closes solenoid valve 4 17, O is continually fed into incinerator 72, it is then shut off solenoid valve 29, controls incinerator 7
Interior heating 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 4 17 is opened, the gas in incinerator 7 is pumped by sealing by vacuum pump 3 10
In container 8, after puff duration 15 seconds or more, solenoid valve 4 17 is closed, vacuum pump 3 10 is stopped, and passes through CO2Concentration Testing
Instrument 21 measures CO in sealing container 82Content, and testing result is sent to central control unit and is calculated；
In step J, solenoid valve 5 18 is opened, the air in sealing container 8 is extracted out by vacuum pump 2 12, is then shut off electromagnetism
Valve 5 18 is prepared to measure next time.
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 includes：
One end of drying oven (5), the drying oven (5) is 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 with one end of sealing container (8) by pipeline, 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).
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 includes：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 equipped on the gas passage successively
(16) and rapping valve (14), blanking channel described in rapping valve (14) face.
5. coal-fired electric generation furnace flying marking quantity measuring method according to claim 4, it is characterised in that；The coal-fired hair
Electric boiler flying marking amount detecting device further includes：The weighing piece being located in lifting rotation pallet (3) the transport range
(15), sample tap (1) and ash discharging hole (2).
6. coal-fired electric generation furnace flying marking quantity measuring method according to claim 5, it is characterised in that：It is 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) and 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)；It is connected to the drying oven (5) and the pipeline of the vacuum pump one (13) is equipped with electromagnetism
Valve six (19).
7. coal-fired electric generation furnace flying marking quantity measuring method according to claim 6, 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).
8. coal-fired electric generation furnace flying marking quantity measuring method according to claim 7, it is characterised in that：The sealing is held
CO is equipped in device (8)2Concentration detector (21).
9. the coal-fired electric generation furnace flying marking quantity measuring method according to claim 3-8 any one, it is characterised in that；
The calcination container (4) includes：
Outer barrel (402)；
Inner cylinder (403), the inner cylinder (403) is connected to the internal bottom of the outer barrel (402) by supporting rod (401), described
Inner cylinder (403) is internal to be divided into each independent calcination channel, and every piece of demarcation strip up and down by several demarcation strips (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)；It is communicated with feeding mouth (406), the feeding mouth at the top of the inner cylinder (403)
(406) lower part is that the tapered channel of internal diameter, the top of the feeding mouth (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
(409) it is internal diameter gradually wealthy channel from bottom to top.
10. coal-fired electric generation furnace flying marking quantity measuring method according to claim 9, which is characterized in that be located above
Demarcation strip (404) through hole (405) aperture thereon be more than the through hole (405) of underlying demarcation strip (404) thereon
Aperture.
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| CN113670765A (en) * | 2021-08-16 | 2021-11-19 | 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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