CN100338390C - Method for predicting coal combustion suitability, coal mediation/transaction system, coal mediation/transaction method, program for executing the transaction method, and recording medium having the program recorded thereon - Google Patents
Method for predicting coal combustion suitability, coal mediation/transaction system, coal mediation/transaction method, program for executing the transaction method, and recording medium having the program recorded thereon Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 513
- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 71
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims description 81
- 238000010304 firing Methods 0.000 claims description 51
- 238000003860 storage Methods 0.000 claims description 24
- 239000002893 slag Substances 0.000 claims description 20
- 238000004458 analytical method Methods 0.000 claims description 19
- 239000000779 smoke Substances 0.000 claims description 19
- 238000005065 mining Methods 0.000 claims description 18
- 238000006467 substitution reaction Methods 0.000 claims description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 210000000056 organ Anatomy 0.000 claims 2
- 239000000446 fuel Substances 0.000 description 15
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005755 formation reaction Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000012384 transportation and delivery Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000008520 organization Effects 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000004449 solid propellant Substances 0.000 description 4
- 238000010025 steaming Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 238000013439 planning Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B1/00—Combustion apparatus using only lump fuel
- F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
- F23B1/22—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using travelling grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B7/00—Combustion techniques; Other solid-fuel combustion apparatus
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- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The present invention is a method for predicting coal combustion suitability, which predicts coal combustion suitability when coal is combusted in a stoker boiler having a grate, and obtains a coal combustion amount per unit area of the grate in the stoker boiler from a formula W ═ kxf/(1-a-M)/(1-VM) using characteristic feature values of ash content a, total moisture M, volatile matter VM, and the like of the coal. Wherein, K: boiler coefficient of operation, F: carbon combustion coefficient. The suitability of combustion in the stoker boiler is predicted based on the coal combustion amount.
Description
Technical field
The present invention relates to the burning adaptability Forecasting Methodology of coal, detailed says, the burning adaptability Forecasting Methodology of the coal of the burning adaptability of the coal when the present invention relates to make coal burning by the firing machine boiler with grate in the prediction firing machine boiler.In addition, the invention still further relates to the coal intermediary transaction system, coal intermediary method of commerce of the burning adaptability Forecasting Methodology of having utilized aforesaid coal, the recording medium that is used to carry out the program of this method and has write down this program.
Background technology
Under prior art, the kind of boiler based on fuel and being divided into: boiler that acts as a fuel with the solid fuel of coal etc. and the boiler that acts as a fuel with liquid or gas etc.
As being the boiler of fuel with the solid fuel, particularly, as being the boiler of fuel with coal, on the platform that is called grate or fire grate (fire grate), make the firing machine boiler (or, be also referred to as chute grate formula grate boiler) of coal burning or be ground into coal microgranular and make the pulverized coal boiler of its burning, further, fluidized-bed combustion boiler etc. is by known.
When making coal burning with these boilers, even used identical coal, because according to the difference of the operating condition of boiler type or boiler etc., boiler efficiency or efficiency of combustion are easy to change, be very important so select to be suitable for the coal of boiler type or boiler operating condition.
, in the transaction of prior art, because do not consider the kind of boiler or the kind that operating condition is selected coal, so do not carry out the selection of optimal coal.
And, even will select optimal coal, because must from the information that coal producer that the user can know or transaction dealer provide, select coal, so will select optimal coal just to be restricted naturally.
On the other hand, even in boiler, the firing machine boiler (or, chute grate formula grate boiler) have: the stove that makes coal burning; Acceptance utilizes the burning of the coal in this stove and the heat that produces, makes the boiler body of water heating or evaporation; Connect stove and chimney, be used for the gas that produces in the stove being released to the flue of atmosphere from chimney.In stove, be provided with the coal input port, and under this coal input port in stove, grate is set to the conveyance that can circulate with the speed of regulation.Be provided with air fed air supply unit on the grate on each position of grate circulation.
Now, if coal is put in the coal input port, then the coal of this input is followed the mobile of grate and is deposited on the grate with the layer state of specific thickness, keeps this layer state always and moves in the stove.So, owing to radiations heat energy in the stove catches fire laminar surface.The face that catches fire of the coal that fights takes fire moves to lower floor from laminar surface, and passes through combustion air and aerify and burn.In addition, remaining ash is discharged to outside the stove from ash recovery mouth.In addition, the exhaust that produces in stove is passed flue and is released to the atmosphere from chimney.
Yet, in the firing machine boiler of prior art, acting as a fuel with coal and making under the situation of its burning, the experience that present situation is based on user's (or operator etc.) of boiler waits to be selected coal kind and uses.Therefore, according to the difference of coal kind, also boiler efficiency or efficiency of combustion are poor sometimes.
Summary of the invention
One object of the present invention is to provide a kind of coal of can predicting whether to be adapted at the burning adaptability Forecasting Methodology of the coal that burns in the firing machine boiler.
The burning adaptability Forecasting Methodology of coal of the present invention, when the firing machine boiler that has a grate in utilization makes coal burning, burning adaptability to coal is predicted, it is characterized in that: the property feature value of using coal, ask for the coal burning amount of grate per unit area in aforementioned firing machine boiler, predict for the burning adaptability in the firing machine boiler based on this coal burning amount.
According to this Forecasting Methodology,, ask for the coal burning amount of every grate unit are in the firing machine boiler, so can correctly ask for the coal burning amount because use the property feature value of coal.Because predict for the burning adaptability in the firing machine boiler, whether be the coal kind that burns in the firing machine boiler that is adapted to use so can judge selected coal based on this coal burning amount.
Therefore, with respect to the user who uses the firing machine boiler, the judgement material in the time of can buying in coal, its result, user can consider that burning adaptability in the firing machine boiler and economy carry out the selection of coal kind etc.
In the burning adaptability Forecasting Methodology of coal of the present invention, the property feature value of wishing coal is ash content A, total moisture M and volatile matter VM.
If use such ash content A, total moisture M and the volatile matter VM property feature value when asking for the coal burning amount, then can correctly ask for the coal burning amount of every grate unit are in the firing machine boiler.
In addition, as the property feature value of coal, can with above-mentioned ash content A, total moisture M and volatile matter VM use high calorific power HCV.
At this moment, when asking for coal burning amount W, wish to use following formula or its approximate expression.
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor F of boiler: carbon burning coefficient.
At this,, for example can enumerate air quantity delivered ratio in the grate each several part of total air quantity delivered to the firing machine boiler, firing machine boiler, grate speed etc. as the stream factor of boiler.
In addition, about the carbon burning coefficient, be 0～1 numerical value by fired state decision, can be that key element decides its value mainly with ash content A or volatile matter VM.In addition, according to circumstances different, also can be with these parts and high calorific power HCV as key element.
Specifically, (1a) formula below wish using or (1b) any approximate expression of formula or they ask for carbon burning coefficient F.
F＝-a×VM+b×A(1-c×A)+d ……(1a)
Wherein, the numerical value of a, b, c, d is for just.
F＝-e×VM-f×A-g×HCV+h ……(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just.
On the other hand, also can will ask for carbon burning coefficient F in the coal representative diameter substitution variable.
Specifically, can use following formula or its approximate expression to ask for aforementioned carbon burning coefficient F.
F＝F1×AF×δ ……(1c)
F1＝(-j×Dp+k×A-1)×CR
2
+(m×Dp-n×A+o)×CR
+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic.
And then, when asking for coal burning amount W, wish and will ask in the air quantity delivered ratio substitution variable in the grate each several part of total air quantity delivered or total air quantity delivered and firing machine boiler.
Specifically, as long as use following formula or its approximate expression to ask for.
W＝∑Mj×Gj×Tj×∑Fj/(1-A-M)/(1-VM)
Wherein, subscript j: the sequence number of the position of expression grate length
Mj: the coefficient relevant with air capacity
Gj: the air capacity that supplies to grate j position in the Tj time
Tj: the holdup time of grate j position.
If, then can more correctly ask for the coal burning amount with asking for coal burning amount W in the air quantity delivered ratio substitution variable in the grate each several part of so total air quantity delivered or total air quantity delivered and firing machine boiler.
In general, in order to make coal completing combustion, need to supply with ratio coal completing combustion required air quantity more air in theory.Its reason is: because only supply with theoretical air requirement, can not spread all over the each several part of coal, certain part is emitted under unburnt state.In solid fuel, because only the surface contacts with air, so must roll up excess air., when the air supply amount was too much, it is many that combustion products becomes, and fuel temperature is reduced, and the heat loss that accompanies with it also increases, so the thermal efficiency reduces, fuel is wasted.
Particularly, under the situation of firing machine boiler, the coal that is layered on the grate is followed moving of grate, move in the stove with layer state always, following each process of process: the initial layer surface catches fire, and then, the face that catches fire moves to lower floor from laminar surface, and then aerify, burn, be very important key element so the air in each process (each position) is supplied with ratio improving on the efficiency of combustion this point.
Therefore, as if asking for coal burning amount W in the air quantity delivered ratio substitution variable in the grate each several part of total air quantity delivered that will supply to the firing machine boiler or total air quantity delivered and firing machine boiler, then can more correctly ask for the coal burning amount.
When asking for coal burning amount W, wish and to ask in the grate speed substitution variable.
Specifically, as long as use following formula or its approximate expression to ask for.
W＝(L/V)×∑(Mj×Gj)×∑Fj/(1-A-M)/(1-VM)
Wherein, V: grate speed
L: the effective length of grate.
If with asking for coal burning amount W in such grate speed substitution variable, then can more correctly ask for the coal burning amount.Promptly, at one side traveling grate, Yi Bian make under the situation of stacked coal burning on it, the translational speed of grate is the key factor that influences fuel efficiency significantly, so ask for coal burning amount W if consider the translational speed of this grate, then can more correctly ask for the coal burning amount.
In addition, wish to use the coal burning amount of trying to achieve to predict boiler efficiency and efficiency of combustion by any above-mentioned method.
About boiler efficiency, wish to predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
About efficiency of combustion, wish to predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
At this moment, use the predictor formula of following formula as the formed heat loss L4 of unburned part in the combustion slag.
L4＝((B-W)×8100/(B×CV)}+D
Wherein, B: the coal amount that drops into to boiler
CV: heating value of coal
D: the heat loss that causes because of dust in the exhaust etc.
If predict boiler efficiency and efficiency of combustion in this wise, can predict exactly then whether coal is adapted at burning in the firing machine boiler.
And then, wish prediction coal smoke generation and/or SO
xAmount.
At this moment, wish to use following formula to ask for SO
xAmount,
SO
x[Nm
3/ Nm
3Exhaust]=sulphur content [kg/kg coal] * (22.4/32)/dried capacity [Nm
3/ kg coal].
If predict coal smoke generation and/or SO in this wise
xAmount then can be considered to give the influence ground of environment and select coal kind etc.
Another object of the present invention is to provide the coal of a kind of kind that can from extensively more information, select the most suitable boiler or operating condition coal intermediary transaction system, coal intermediary method of commerce, write down the recording medium and the program of the program that is used to carry out this method.
The burning adaptability Forecasting Methodology of the coal of coal of the present invention intermediary transaction system application of aforementioned is selected the kind of suitable boiler or the coal of operating condition.
Coal of the present invention intermediary transaction system, the seller who sells coal and buy between the buyer of the employed coal of boiler, intermediation is played in transaction to coal, it is characterized in that: have: the Coal Information storing mechanism of having stored the information relevant with aforementioned coal according to each coal kind; Store the boiler information storage mechanism of the information relevant with aforementioned boiler; Select prompting mechanism, this mechanism is in the condition relevant with boiler of being stored by this boiler information storage mechanism, the suitable precedence of the prediction coal kind that is suitable for burning in each coal kind from be stored in aforementioned Coal Information storing mechanism is selected this suitable precedence high a kind or multiple coal and is prompted to aforementioned buyer.
According to this coal intermediary transaction system, under the state that in advance information relevant with the coal that will sell is stored in according to each coal kind in the Coal Information storing mechanism, if for example relevant with the boiler of buyer's use information is stored in the boiler information storage mechanism, then select prompting mechanism in the condition relevant of being stored by this boiler information storage mechanism with boiler, the suitable precedence of the prediction coal kind that is suitable for burning in each coal kind from be stored in the Coal Information storing mechanism is selected this suitable precedence high a kind or multiple coal and is pointed out.
Therefore, if in advance the information relevant with the coal that will sell is stored in the Coal Information storing mechanism according to each coal kind, then can from extensively more information, select relevant information, the kind of for example boiler or the coal of operating condition of the most suitable and employed boiler.
In coal of the present invention intermediary transaction system, information about coal comprises: the ash content A that is contained in the coal, total moisture M and volatile matter VM, select prompting mechanism in the condition relevant that aforementioned boiler information storage mechanism is stored with boiler, according to each coal kind that is stored in aforementioned Coal Information storing mechanism, ask for the coal burning amount based on the ash content A that is contained in this coal, total moisture M and volatile matter VM, wish to predict the suitable precedence of the coal kind that is suitable for burning based on this coal burning amount.
At this moment, when asking for coal burning amount W, wish to use following formula or its approximate expression to ask for.
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor of boiler
F: carbon burning coefficient.
At this,, for example under the situation of firing machine boiler, can enumerate air quantity delivered ratio in the grate each several part of total air quantity delivered to the firing machine boiler, firing machine boiler, grate speed etc. as the stream factor K of boiler.
In addition, about carbon burning coefficient F, be 0～1 numerical value by fired state decision, can be that key element decides its value mainly with ash content A and volatile matter VM.In addition, according to circumstances different, also can be with these parts and high calorific power HCV, coal representative diameter D
pAs key element.
Specifically, can use following (1a) formula, (1b) formula or (1c) any approximate expression of formula or they ask for carbon burning coefficient F,
F＝-a×VM+b×A(1-c×A)+d ……(1a)
Wherein, the numerical value of a, b, c, d is for just.
F＝-e×VM-f×A-g×HCV+h ……(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just.
F＝F1×AF×δ ……(1c)
F1＝(-j×Dp+k×A-1)×CR
2+(m×Dp-n×A+o)×CR+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic
If use such ash content A, total moisture M and volatile matter VM or these and high calorific power HCV, coal representative diameter D
pParameter when asking for the coal burning amount then can correctly be asked for the coal burning amount in the boiler.Its result, because can correctly ask for the coal burning amount, thus can be based on this coal burning amount, the burning adaptability in the prediction boiler judges whether selected coal is the coal kind that burns in the boiler that is adapted at using.
Coal of the present invention intermediary method of commerce is intermediary's method of commerce that above-mentioned coal intermediary transaction system is launched as coal intermediary method of commerce.
According to this coal intermediary method of commerce, can access with in the identical effect of effect described in the above-mentioned coal intermediary transaction system.
Program of the present invention is to be used for program that above-mentioned any coal intermediary method of commerce is carried out on computers.
Recording medium of the present invention is to have write down the recording medium that is used for program that any above-mentioned coal intermediary method of commerce is carried out on computers and can be read by computer.
According to this program and recording medium, by program of the present invention being installed in the generic server that is used for network etc., can carry out the coal intermediary method of commerce of above-mentioned any by generic server, promote so can seek the utilization of coal of the present invention intermediary method of commerce.
Description of drawings
Fig. 1 is the figure that represents the structure of the firing machine boiler that uses in one embodiment of the present invention.
Fig. 2 is the figure of formation of the coal intermediary transaction system of expression embodiments of the present invention.
Fig. 3 is the figure of the formation of the server in the same embodiment of expression.
Fig. 4 is the figure of the content of the Coal Information storing mechanism in the same embodiment of expression.
Fig. 5 is the figure of the Coal Information registration picture in the same embodiment of expression.
Fig. 6 is the figure of the boiler information registration picture in the same embodiment of expression.
Fig. 7 is the figure of the suitable coal name list picture in the same embodiment of expression.
Fig. 8 is the figure that the coal in the same embodiment of expression is bought picture.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described.
(first embodiment)
The burning adaptability Forecasting Methodology of the coal of present embodiment is when making coal burning in having the firing machine boiler of grate, the burning adaptability Forecasting Methodology of the coal of the burning adaptability of prediction coal, use the property feature value of coal, ask for the coal burning amount of every grate unit are in the firing machine boiler, the burning adaptability in the firing machine boiler is predicted based on this coal burning amount.
So, at first the firing machine boiler is described.
As shown in Figure 1, the firing machine boiler has: the stove 1 that makes coal burning; The boiler body 11 of accepting heat and making the water heating, evaporate, described heat produces by the burning of the coal in this stove 1; Connect stove 1 and chimney (omitting diagram), be used for the gas that produces in the stove 1 being released to the flue 14 of atmosphere from chimney.
In stove 1, be provided with coal input port 2, and under this coal input port 2 in stove 1, be provided with grate 3, it can be with speed conveyance that circulate of regulation.Specifically, while the driving wheel of the grate 3 of ring-type by front and back circulates goes in ring.Be provided with air fed air supply unit 4 on the grate 3 on each position of grate 3 circulation, and be provided with at the lower position of grate 3 and collect and to discharge the leakage charcoal outlet 5 that leaks charcoal.In addition, conveyance direction front end one side at grate 3 is provided with ash recovery mouth 6.
Therefore, if coal puts in the coal input port 2, then the coal of this input is followed the mobile of grate 3 and is deposited on the grate 3 with the layer state of specific thickness, keeps this layer state always and moves in the stove 1.At this moment, layer thickness and the grate feed speed of suitably adjusting coal in advance waits the non-uniform combustion that suppresses the coal in the stove.Move to the interior coal of stove owing to radiations heat energy in the stove catches fire laminar surface.Also suitably adjusting air in this case in advance distributes so that catch fire and can not postpone.The face that catches fire of the coal that fights takes fire moves to lower floor from laminar surface, and passes through combustion air and aerify and burn.At this moment, adjust the air feed speed in advance, make the face that catches fire from laminar surface to the moving evenly and be in maximal rate of lower floor, and also suitably adjust air in advance and distribute, with do one's utmost to suppress the generation of coal smoke, promptly, make its completing combustion.In addition, remaining ash is discharged to outside the stove from ash recovery mouth 6.In addition, the exhaust that produces in stove is passed flue 14 and is released to the atmosphere from chimney.
Then, use the property feature value of coal to ask for the coal burning amount, then carry out as described below.
As the property feature value of coal, can select ash content A, total moisture M and volatile matter VM, apply it in the following formula, ask for coal burning amount W
W＝K×F/(1-A-M)/(1-VM) ……(1)
Wherein, K: the stream factor of boiler, F: carbon burning coefficient.
At this, (1a) formula below utilizing, (1b) formula or (1c) formula ask for carbon burning coefficient F.
F＝-a×VM+b×A(1-c×A)+d ……(1a)
Wherein, the numerical value of a, b, c, d is for just.
F＝-e×VM-f×A-g×HCV+h ……(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just.
F＝F1×AF×δ ……(1c)
F1＝(-j×Dp+k×A-1)×CR
2
+(m×Dp-n×A+o)×CR
+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic.
These values are as long as set by actual measured value and simulated experiment.
As mentioned above, carbon burning coefficient F can mainly ask for by volatile matter VM and ash content A, and in general, when volatile matter VM and ash content A became big, carbon burning coefficient F diminished.
Therefore, if use such ash content A, total moisture M and volatile matter VM or these and high calorific power HCV, coal representative diameter D
pProperty feature value when asking for the coal burning amount then can correctly be asked for the coal burning amount.
In addition, in above-mentioned (1) formula,, can ask for coal burning amount W with in the air quantity delivered ratio substitution variable in the grate each several part of total air quantity delivered and firing machine boiler as the stream factor K of boiler.In this case, use following formula or its approximate expression.
W＝∑Mj×Gj×Tj×∑Fj/(1-A-M)/(1-VM) ……(2)
Wherein, subscript j: the sequence number of the position of expression grate length
Mj: the coefficient relevant with air capacity
Gj: the air capacity that supplies to grate j position in the Tj time
Tj: the holdup time of grate j position.
If with asking for coal burning amount W in the air quantity delivered ratio substitution variable in the grate each several part of so total air quantity delivered and firing machine boiler, then can more correctly ask for the coal burning amount.
In general, in order to make coal completing combustion, need to supply with ratio coal completing combustion required air quantity more air in theory.Its reason is: because only supply with theoretical air requirement, can not spread all over the each several part of coal, certain part is emitted under unburnt state.In solid fuel, because only the surface contacts with air, so must roll up excess air., when the air supply amount was too much, it is many that combustion products becomes, and fuel temperature is reduced, and the heat loss that accompanies with it also increases, so the thermal efficiency reduces, fuel is wasted.
Particularly, under the situation of firing machine boiler, the coal that is layered on the grate is followed moving of grate, move in the stove with layer state, following each process of process: catch fire on laminar surface at first, then, the face that catches fire moves to lower floor from laminar surface, and then aerify, burn, be very important key element so the air in each process (each position) is supplied with ratio improving on the efficiency of combustion this point.
Therefore, as if asking for coal burning amount W in the air quantity delivered ratio substitution variable in the grate each several part of total air quantity delivered that will supply to the firing machine boiler and firing machine boiler, then can more correctly ask for the coal burning amount.
And then, in above-mentioned (2) formula,,, ask for coal burning amount W if with grate speed substitution variable as the stream factor K of boiler, then be preferred.At this moment, use following formula or its approximate expression.
W＝(L/V)×∑(Mj×Gj)×∑Fj/(1-A-M)/(1-VM)
Wherein, V: grate speed
L: the effective length of grate.
If with asking for coal burning amount W in such grate speed substitution variable, then can more correctly ask for the coal burning amount.Promptly, at one side traveling grate, Yi Bian make under the situation of form of stacked coal burning thereon, the translational speed of grate is the key factor that influences fuel efficiency significantly, so ask for coal burning amount W if consider the translational speed of this grate, then can more correctly ask for the coal burning amount.
Then, use the coal burning amount of trying to achieve to predict boiler efficiency and efficiency of combustion by any above-mentioned method.
About boiler efficiency η b, predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
That is, utilize following formula to predict boiler efficiency η b.
ηb＝1-(∑L/100) ……(4)
Wherein, ∑ L: the total of various heat loss ratio L1～L6
L1: the heat loss ratio of the exhaust that produces owing to burning
L2: be blown into the heat loss ratio that steam in the stove etc. causes
L3: the heat loss ratio that unburnt gas causes
L4: the heat loss ratio that the unburned part in the combustion slag causes
L5: the heat loss ratio that radiant heat causes
L6: other.
About efficiency of combustion η c, predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
That is, utilize following formula to predict boiler efficiency η b.
That is η c=1-L3-L4 ... (5)
Wherein, L3: the heat loss that unburnt gas causes
L4: the heat loss that the unburned part in the combustion slag causes.
In above-mentioned (5) formula, use the prediction type of following formula as the formed heat loss L4 of unburned part in the combustion slag.
L4＝U×8100/(B×CV)+D ……(6)
At this, U is the unburned carbon amount,
U＝(B-W)。
Therefore, efficiency of combustion η c is as described below.
ηc＝1-L3-{U×8100/(B×CV)+D} ……(7)
Wherein, B: put into the coal amount in the boiler
CV: heating value of coal
D: the heat loss that causes because of dust in the exhaust etc.
If predict boiler efficiency and efficiency of combustion in this wise, can predict exactly then whether coal is adapted at burning in the firing machine boiler.
And then, if prediction coal smoke generation and SO
xAmount, then more preferred.At this moment, use following formula to ask for SO
xAmount.
SO
x[Nm
3/ Nm
3Exhaust]=the dried capacity [Nm of sulphur content [kg/kg coal] * 22.4/32/
3/ kg coal] ... (8)
If predict coal smoke generation and SO in this wise
xAmount then can be considered to give the influence ground of environment and select coal kind etc.
(second embodiment)
Below, as second embodiment, to describing based on coal of the present invention intermediary transaction system.
(system's formation)
Fig. 2 is the figure that the summary of the coal intermediary transaction system of expression present embodiment constitutes.This coal intermediary transaction system 21 is the seller who sells coal and buys between the buyer of the employed coal of boiler, and the coal intermediary transaction system of intermediary is carried out in the transaction of coal, has: boiler user terminal 22A, 22B, 22C; Coal mining dealer terminal 23; Coal transaction dealer terminal 24; Boiler producer terminal 25; Research or project enterprise planning dealer terminal 26, the server 27 held, these parts can connect mutually communicatedly via the network system 28 of internet etc.
Boiler user terminal 22A, 22B, 22C are the terminal computers that boiler user (buyer) is held, described boiler user has boiler and will buy the coal that uses at this boiler and acts as a fuel, by notebook computer, desktop computer, the mobile phone with browser function or portable information terminal formations such as (PDA).This boiler user terminal 22A, 22B, 22C have the formation identical with common computer, that is, have: input mechanism, indication mechanism, storing mechanism, controlling organization.
At this, during from the input mechanism input condition relevant, respond with it with the boiler that uses, the various information of sending from server 27 are presented on the indication mechanism.As with the relevant condition of using of boiler, be the machine, operating condition etc. of boiler.For example, under the situation of the firing machine boiler that makes coal burning on the grate that moves, be air quantity delivered ratio in the grate each several part of total air quantity delivered, firing machine boiler, grate speed etc. to the firing machine boiler.
Coal mining dealer terminal 23 is terminal computers that exploitation and the dealer (seller) that will sell coal are held, and is made of notebook computer, desktop computer etc.This coal mining dealer terminal 23 has the formation identical with common computer, that is, have: input mechanism, indication mechanism, storing mechanism, controlling organization.
At this, can be from the coal relevant information of input mechanism registration with our company's exploitation.As the information relevant, for example be coal title, ash content A, total moisture M, volatile matter VM, oxygen/carbon ratio (O/C), size distribution and other property feature values, and then be unit price, the place of production, advantage etc. with coal.
Coal transaction dealer terminal 24 is to buy coal and sell boiler user's etc. the coal transaction terminal computer that the dealer held with the coal of buying from the coal mining dealer, is made of notebook computer, desktop computer etc.This coal transaction dealer terminal 24 has the formation identical with common computer, promptly, have: input mechanism, indication mechanism, storing mechanism, controlling organization, and can carry out two kinds of functions of the function of the function of aforementioned boiler user terminal 22A, 22B, 22C and coal mining dealer terminal 23.
Boiler producer terminal 25 is terminal computers that boiler producer is held.The terminal 26 that this boiler producer terminal 25 or research, project enterprise planning dealer are held also has the formation identical with common computer, promptly, have: input mechanism, indication mechanism, storing mechanism, controlling organization, can obtain information about the coal kind of the machine that is fit to boiler or operating condition.
As shown in Figure 3, server 27 has: as the s operation control mechanism 33 that is connected the selection prompting mechanism of the formations such as CPU on the network system 28 via intelligence receiver structure 31 and information transmitting mechanism 32, input mechanism 34, indication mechanism 35, procedure stores mechanism 36, stored the Coal Information storing mechanism 37, storage of the information relevant with the coal that will sell and be the boiler information storage mechanism 38 of the relevant information of the boiler of fuel with coal according to coal kind.
S operation control mechanism 33 has following function: in the condition relevant with boiler of being stored in this boiler information storage mechanism 38, the suitable precedence of the prediction coal kind that is suitable for burning in each coal kind from be stored in Coal Information storing mechanism 37 is selected this suitable precedence high a kind or multiple coal and is prompted to the terminal of buyer's one side.
In procedure stores mechanism 36, store the program that is used to carry out " system acting " described later.
As shown in Figure 4, according to coal title No1, the No2 that will sell ... in Coal Information storing mechanism 37, store: property feature value (for example, ash content A, total moisture M, volatile matter VM, oxygen/carbon ratio (O/C), size distribution and other etc.), unit price, the place of production, advantage etc.
Store in boiler information storage mechanism 38: the operating condition of the kind of boiler, the capacity of boiler, boiler for example under the situation of firing machine boiler, stores air capacity, grate speed of total air quantity delivered, grate each several part etc.
(action of system)
(1) from coal sales dealer's visit (registration of Coal Information)
Sell the coal mining dealer of coal or the browser software that coal transaction dealer utilizes coal mining dealer terminal 23 (or coal transaction dealer terminal 24), the uniform resource locator URL of given server 27 (Uniform Resource Locators), access server 27.
The server 27 of accepting the interview and requiring from the coal mining dealer terminal 23 of seller's one side (or coal transaction dealer terminal 24), with respect to the coal mining dealer terminal 23 of having visited (or coal transaction dealer terminal 24), output Coal Information registration picture (with reference to Fig. 5).
The seller is based on the Coal Information registration picture that is presented on the coal mining dealer terminal 23 (or coal transaction dealer terminal 24), and the input Coal Information is to server 27 outputs.That is, input coal title, property feature value (for example, ash content A, total moisture M, volatile matter VM, oxygen/carbon ratio (O/C), size distribution and other), unit price, the place of production, advantage etc. are to server 27 outputs.
Accept the server 27 of Coal Information based on this Coal Information from the coal mining dealer terminal 23 (coal transaction dealer terminal 24) of seller's one side, property feature value (for example, ash content A, total moisture M, volatile matter VM, oxygen/carbon ratio (O/C), size distribution and other), unit price, the place of production, advantage are stored in the Coal Information storing mechanism 37.
Like this, when a plurality of coal mining dealers or coal transaction dealer accepts the information relevant with the coal that will sell, except the property feature value relevant, also successively unit price, the place of production, advantage etc. are stored in the Coal Information storing mechanism 37 with a plurality of coal titles.
(2) from boiler user (the coal person's of buying) visit (registration of boiler information)
The boiler user or the coal transaction dealer that buy coal utilize boiler user terminal 22A, 22B, 22C (or coal transaction dealer terminal 24), access server 27.
From the boiler user terminal 22A of buyer's one side, the server 27 that 22B, 22C (or coal transaction dealer terminal 24) accept the interview and require, with respect to the boiler user terminal 22A that has visited, 22B, 22C (or coal transaction dealer terminal 24), output boiler information registration picture (with reference to Fig. 6).
Buyer is based on the boiler information registration picture that is presented on boiler user terminal 22A, 22B, the 22C (or coal transaction dealer terminal 24), and input boiler information is to server 27 outputs.That is, the capacity of kind, the boiler of input boiler, the operating condition of boiler (for example under the situation of firing machine boiler, importing the air capacity, grate speed of total air quantity delivered, grate each several part etc.) etc. are to server 27 outputs.
Boiler user terminal 22A from buyer's one side, 22B, the server 27 that 22C (or coal transaction dealer terminal 24) accepts boiler information is stored in this boiler information in the boiler information storage mechanism 38, and, in the condition relevant of in this boiler information storage mechanism 38, being stored with boiler, the suitable precedence of the prediction coal kind that is suitable for burning in each coal kind from be stored in Coal Information storing mechanism 37 is selected this suitable precedence high a kind or multiple coal and is prompted to the boiler user terminal 22A of buyer's one side, 22B, 22C (or coal transaction dealer terminal 24).
Like this, according to each the coal title that is stored in the Coal Information storing mechanism 37, property feature value based on this coal, specifically, based on the ash content A that contains in this coal, total moisture M, volatile matter VM, and oxygen/carbon ratio (O/C) etc., ask for the coal burning amount, predict the suitable precedence of the coal kind that is suitable for burning based on this coal burning amount.
When asking for coal burning amount W, use following formula to ask for.
W＝K×F/(1-A-M)/(1-VM) ……(1)
Wherein, K: the stream factor of boiler, F: carbon burning coefficient.
At this, can use following (1a) formula, (1b) formula or (1c) any approximate expression of formula or they ask for carbon burning coefficient F.
F＝-a×VM+b×A(1-c×A)+d ……(1a)
Wherein, the numerical value of a, b, c, d is for just.
F＝-e×VM-f×A-g×HCV+h ……(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just.
F＝F1×AF×δ ……(1c)
F1＝(-j×Dp+k×A-1)×CR
2
+(m×Dp-n×A+o)×CR
+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic.
Then, based on this coal fuel quantity W, prediction is suitable for the suitable precedence of the coal kind that burns in the boiler of being registered.
Specifically, use coal burning amount W, prediction boiler efficiency and efficiency of combustion, and then, prediction coal smoke generation and SO
xAmount is utilized these boiler efficiencies, efficiency of combustion, coal smoke generation and SO
xAmount, prediction is fit to precedence.
About boiler efficiency η b, predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
That is, utilize following formula to predict boiler efficiency η b.
ηb＝1-(∑L/100) ……(4)
Wherein, ∑ L: the total of various heat loss ratio L1～L6
L1: the heat loss ratio of the exhaust that produces owing to burning
L2: be blown into the heat loss ratio that steam in the stove etc. causes
L3: the heat loss ratio that unburnt gas causes
L4: the heat loss ratio that the unburned part in the combustion slag causes
L5: the heat loss ratio that radiant heat causes
L6: other.
About efficiency of combustion η c, predict according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
That is, utilize following formula to predict boiler efficiency η c.
ηc＝1-L3-L4 ……(5)
Wherein, L3: the heat loss that unburnt gas causes
L4: the heat loss that the unburned part in the combustion slag causes.
In the formula, use the prediction type of following formula as the formed heat loss L4 of unburned part in the combustion slag.
L4＝(U×8100/B×CV)+D ……(6)
At this, U is the unburned carbon amount,
U＝(B-W)。
Therefore, efficiency of combustion η c is as described below.
That is η c=1-L3-{U * 8100/ (B * CV)+D) ... (7)
Wherein, B: put into the coal amount in the boiler
CV: heating value of coal
D: the heat loss that causes because of dust in the exhaust etc.
And then, at coal smoke generation and SO
xIn the amount, use following formula to ask for SO
xAmount.
SO
x[Nm
3/ Nm
3Exhaust]=the dried capacity [Nm of sulphur content [kg/kg coal] * 22.4/32/
3/ kg coal] ... (8)
From above boiler efficiency of trying to achieve, efficiency of combustion, coal smoke generation and SO
xAmount and then, the coal consumption amount of boiler, anticipation is fit to precedence.
At this, can utilize institute's calorific requirement, heating value of coal and the boiler efficiency of boiler to ask for the coal consumption amount of boiler.For example, with institute's calorific requirement of boiler be made as Q, heating value of coal be made as CV, when boiler efficiency is made as η b,
Can utilize the coal consumption amount=Q/CV/ η b of boiler to ask for.
Different as the case may be, can use various methodologies to be used as envisioning the method that is fit to precedence.
For example, when needs are paid attention to environment, increase coal smoke generation or SO
xThe factor of amount.In addition, as a rule, be preferably coal smoke generation or SO
xAmount decides adaptability with boiler efficiency or the high order of efficiency of combustion below a certain amount of.In addition, preferably decide adaptability with the few order of coal consumption amount.
Perhaps, can be with these boiler efficiencies, efficiency of combustion, coal smoke generation and SO
xMeasure, also have the coal consumption amount to multiply by weight coefficient, ask for comprehensive evaluation value, utilize this comprehensive evaluation value to envision suitable precedence.In this case,, ask for comprehensive evaluation value, then can envision the most suitable precedence of the coal of suitable each environment for use if corresponding environment for use condition waits and replaces weight coefficient.
Like this, the suitable coal name list picture (with reference to Fig. 7) that obtains is sent to boiler user terminal 22A, 22B, the 22C (or coal transaction dealer terminal 24) of buyer's one side.
Buyer judges whether to buy with reference to the suitable coal name list picture that is shown on boiler user terminal 22A, 22B, the 22C (or coal transaction dealer terminal 24).
Here, under the situation that hope is bought, buying when wishing that check is inserted on a hurdle, then demonstrating relevant with the coal title that will the buy bill (with reference to Fig. 8) of buying.
Buyer is based on the bill of buying that shows, after inserting necessary item, to server 27 transmission information.That is, after inserting the amount of buying, delivery ground, delivery day etc., to server 27 transmission information.
From the boiler user terminal 22A of buyer's one side, the server 27 that 22B, 22C (or coal transaction dealer terminal 24) accept to buy bill, buy bill based on this, carry out the further processing of transaction business.About later processing, between buyer and seller, conclude the business.
In addition, in the transaction of this intermediary, buyer's one side when carrying out the registration of Coal Information, to a side payment procedure expense (registration fee usefulness) of management server 27, and then, to a side defrayment of management server 27 annual fee as every year.
In addition, also by carrying out above-mentioned operation, that is, can utilize the terminal registration boiler information of being held from own in boiler producer or research project enterprise planning dealer, which kind of information obtains the kind of suitable this boiler or the coal of operating condition is.
(effect of second embodiment)
Coal intermediary transaction system according to present embodiment, under the state that according to each coal kind the information relevant with the coal that will sell is stored in advance in the Coal Information storing mechanism 37, if the information relevant with the boiler of buyer's use is stored in the boiler information storage mechanism 38, then in the condition relevant that s operation control mechanism 33 is stored in this boiler information storage mechanism 38 with boiler, the suitable precedence of the coal kind that prediction is suitable for burning in each coal kind from be stored in Coal Information storing mechanism 37, select the high multiple coal of this suitable precedence, as suitable coal name list (Fig. 7) and be prompted to buyer.
Therefore, if according to each coal kind the information relevant with the coal that will sell is stored in the Coal Information storing mechanism 37 in advance, then can from extensively more information, select the kind of suitable boiler or the coal of operating condition.
In addition, because on the coal name list that is fit to, except the project of boiler efficiency, efficiency of combustion, discharge characteristic etc., also shown unit price, the place of production, advantage etc., so can consider apart from the cost of transportation in the place of production or the content described in the advantage etc., select the kind of the coal that will buy.
In addition, during the suitable precedence of the coal kind that is suitable for burning in prediction, because property feature value based on the ash content A that contains in the coal, total moisture M, volatile matter VM etc., ask for the coal burning amount, predict the suitable precedence of the coal kind that is suitable for burning based on this coal burning amount, so can correctly ask for the suitable precedence of suitable coal kind.
At this moment, when asking for coal burning amount W,
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor of boiler, F: carbon burning coefficient.Because ask for, so can correctly ask for the coal burning amount from following formula.
In addition, because use coal burning amount W, prediction boiler efficiency and efficiency of combustion are fit to precedence from these boiler efficiencies and efficiency of combustion anticipation, so can correctly judge the coal title of fit for service boiler.
And then, because prediction coal smoke generation and SO
xAmount is together with these coal smoke generation and SO
xAmount, anticipation is fit to precedence, so also can consider coal kind is selected in the influence of environment.
(distortion of second embodiment)
In addition, system of the present invention is not limited to aforesaid embodiment, also comprises variation shown below.
In aforementioned embodiments, though the Coal Information that will sell registers on the server 27 via network system 28 from coal mining dealer terminal 23 or coal transaction dealer terminal 24, but also can be not via network system 28, the Coal Information that will sell is directly inputted in the server 27.
In aforementioned embodiments, though from coal mining dealer terminal 23 or the coal transaction dealer terminal 24 inputs information relevant with the coal that will sell, promptly, the property feature value of ash content A, total moisture M, volatile matter VM and the oxygen/carbon ratio (O/C) etc. that contain the coal, but also can carry out the analysis of coal, import the property feature value of coal based on this analysis result in a side of management server 27.At this moment, as long as pay the expense (service charge) that this analysis operation is followed from a side of entrusting a side direction management server 27 of analyzing.
In aforementioned embodiments, though by the terminal 22A that connects via network system 28,22B, 22C, 23～26, server 27 constitute, and also can be realized by the computer of self.Also can expect same effect in this case.
According to the program of the coal intermediary method of commerce that is used for carrying out on computers above-mentioned any and the recording medium that write down this program and can have been read by computer, by being used for that program of the present invention is installed on the generic server of network etc., can carry out the coal intermediary method of commerce of above-mentioned any by generic server, promote so can seek the utilization of coal of the present invention intermediary method of commerce.
(embodiment)
Below, the specific embodiment based on the burning adaptability Forecasting Methodology of the coal of aforementioned first embodiment is described.
(embodiment 1)
The total moisture M of object coal, ash content A, volatile matter VM are as described in the embodiment 1 of table 1.This moment employed boiler effective length L=6m, the transporting velocity V=9m/h of grate.The excess air ratio that the air supply amount will not produce coal smoke and efficient maximum is set at m=1.6.
The property list of table 1 coal
| Embodiment |
| 1 | |
| The total sulphur content wt%-DB of coal character total moisture wt%-AR M ash content wt%-AR A volatile matter wt%-AR high calorific power kcal/kg-AR low heat valve kcal/kg-AR CV C wt%-AR H wt%-AR O wt%-AR N wt%-AR S wt%-AR volatile matter wt%-DAF VM | 8 28.5 25.3 5,220 4,970 52.2 3.7 10.2 0.7 0.4 39.3 0.76 |
In each physical property substitution aforesaid (3) formula with these coals, calculate coal burning amount W.Though use is calculated carbon burning coefficient ∑ Fj with the relevant formula of ash content, volatile matter, coefficient a=0.140, b=0.799, c=2.336, the d=0.145 of this moment.(3) each coefficient of formula becomes result shown below.
L/V＝0.667
∑Mj＝0.175
∑Gj＝1,650
∑Fj＝0.174
W＝86.9[Kg/m
2]
In addition, the coal amount B that puts in the boiler this moment is every 1m
2Grate 98.02kg.Therefore, use (6) formula, the ratio of trying to achieve the heat loss that the unburned carbon in the combustion slag causes is as follows.In (6) formula, the actual value of ratio D from boiler of the heat loss that causes because of dust in the exhaust etc. is seen as 2.3%.
Calculate the generation U of unburned carbon with following formula.
B＝98.02
U＝(B-W)＝11.16
Calculate the heat loss ratio L4 that the unburned part in the combustion slag causes with following formula.
D＝2.3％
L4＝U×8100/(B×CV)+D＝20.9％
Making L3 is 0, calculates efficiency of combustion η c with following formula.
ηc＝1-L3-L4＝79.1％
Based on jIS, to heat loss L5 and other heat loss L6 that waste-heat rejection L1, radiant heat cause, the sensible heat of taking out of together with the combustion slag calculates, and its result is as shown in table 2.
The result of the burning condition of table 2 boiler and heat loss ratio
| Embodiment |
| 1 | |
| The capacity t/h of boiler | 10 |
| Delivery temperature (AH outlet) excess air ratio exhaust O 2％ | 168 1.6 8.1％ |
| The detailed description L1 exhaust sensible heat L3+L4 imperfect combustion L5 radiation heat loss L6 heat that solid is with of the heat loss of boiler | 7.3％ 20.9％ 3.2％ 1.2％ |
| Boiler efficiency low level benchmark heat loss method | 67.5％ |
Therefore, boiler efficiency η b is as follows.
That is η b=1-∑ L=67.5%,
If institute's calorific requirement of the boiler of 10t/h is 5,390,000Kcal/h, then per 1 hour coal consumption amount is as follows.
The coal consumption amount [Kg/h]=5,390 of boiler, 000/CV/ η b=1,607
If the steaming hour in a year is 8,000 hours, then the coal consumption amount in 1 year is as follows.
The coal consumption amount [t/y]=12,895 in 1 year
(embodiment 2)
The total moisture M of object coal, ash content A, volatile matter VM are as described in the embodiment 2 of table 3.This moment employed boiler effective length L=6m, the transporting velocity V=9m/h of grate.The excess air ratio that the air supply amount will not produce coal smoke and efficient maximum is set at m=1.6.
The property list of table 3 coal
| Embodiment |
| 2 | |
| The total sulphur content wt%-DB of coal character total moisture wt%-AR M ash content wt%-AR A volatile matter wt%-AR high calorific power kcal/kg-AR low heat valve kcal/kg-AR CV C wt%-AR H wt%-AR O wt%-AR N wt%-AR S wt%-AR volatile matter wt%-DAF VM | 8 14.3 35.2 6,300 6,000 62.2 4.7 9.5 1 0.3 45 0.87 |
In each physical property substitution aforesaid (3) formula with these coals, calculate coal burning amount W.Though use is calculated carbon burning coefficient ∑ Fj with the relevant formula of ash content, volatile matter, coefficient a=0.140, b=0.799, c=2.336, the d=0.145 of this moment.(3) each coefficient of formula becomes result shown below.
L/V＝0.667
∑Mj＝0.175
∑Gj＝1,640
∑Fj＝0.166
W＝74.2(Kg/m
2)
In addition, the coal amount B that puts in the boiler this moment is every 1m
2Grate 81.2kg.Therefore, use (6) formula, the ratio of trying to achieve the heat loss that the unburned carbon in the combustion slag causes is as follows.In (6) formula, the actual value of ratio D from boiler of the heat loss that causes because of dust in the exhaust etc. is seen as 1.8%.
Calculate the generation U of unburned carbon with following formula.
B＝81.20
U＝(B-W)＝7.02
Calculate the heat loss ratio L4 that the unburned part in the combustion slag causes with following formula.
D＝1.8％
L4＝U×8100/(B×CV)+D＝13.5％
Making L3 is 0, calculates efficiency of combustion η c with following formula.
ηc＝1-L3-L4＝86.5％
Based on jIS, to heat loss L5 and other heat loss L6 that waste-heat rejection L1, radiant heat cause, the sensible heat of taking out of together with the combustion slag calculates, and its result is as shown in table 4.
The result of the burning condition of table 4 boiler and heat loss ratio
| Embodiment |
| 2 | |
| The capacity t/h of boiler | 10 |
| Delivery temperature (AH outlet) excess air ratio exhaust O 2％ | 168 1.6 8.0％ |
| The detailed description L1 exhaust sensible heat L3+L4 imperfect combustion L5 radiation heat loss L6 heat that solid is with of the heat loss of boiler | 7.8％ 13.5％ 3.2％ 0.6％ |
| Boiler efficiency low level benchmark heat loss method | 75.0％ |
Therefore, boiler efficiency η b is as follows.
ηb＝1-∑L＝75.0％
If institute's calorific requirement of the boiler of 10t/h is 5,390,000Kcal/h, then per 1 hour coal consumption amount is as follows.
The coal consumption amount [Kg/h]=5,390 of boiler, 000/CV/ η b=1,198
If the steaming hour in 1 year is 8000 hours, then the coal consumption amount in 1 year is as follows.
The coal consumption amount [t/y]=9,852 in 1 year
(embodiment 3)
The total moisture M of object coal, ash content A, volatile matter VM are as described in the embodiment 3 of table 5.This moment employed boiler effective length L=6m, the transporting velocity V=9m/h of grate.The excess air ratio that the air supply amount will not produce coal smoke and efficient maximum is set at m=1.6.
The property list of table 5 coal
| Embodiment |
| 3 | |
| The total sulphur content wt%-DB of coal character total moisture wt%-AR M ash content wt%-AR A volatile matter wt%-AR high calorific power kcal/kg-AR low heat valve kcal/kg-AR CV C wt%-AR H wt%-AR O wt%-AR N wt%-AR S wt%-AR volatile matter wt%-DAF VM | 6.5 17.4 18.3 6,500 6,240 67.5 4.1 3.5 0.7 0.3 23.9 0.43 |
In each physical property substitution aforesaid (3) formula with these coals, calculate coal burning amount W.Though use is calculated carbon burning coefficient ∑ Fj with the relevant formula of ash content, volatile matter, coefficient a=0.140, b=0.799, c=2.336, the d=0.145 of this moment.(3) each coefficient of formula becomes result shown below.
L/V＝0.667
∑Mj＝0.175
∑Gj＝1,700
∑Fj＝0.204
W＝69.8[Kg/m
2]
In addition, the coal amount B that puts in the boiler this moment is every 1m
2Grate 78.14kg.Therefore, use (6) formula, the ratio of trying to achieve the heat loss that the unburned carbon in the combustion slag causes is as follows.In (6) formula, the actual value of ratio D from boiler of the heat loss that causes because of dust in the exhaust etc. is seen as 1.8%.
Calculate the generation U of unburned carbon with following formula.
B＝78.14
U＝(B-W)＝8.46
Calculate the heat loss ratio L4 that the unburned part in the combustion slag causes with following formula.
D＝1.8％
L4＝U×8100/(B×CV)+D＝15.8％
Making L3 is 0, calculates efficiency of combustion η c with following formula.
ηc＝1-L3-L4＝84.2％
Based on jIS, to heat loss L5 and other heat loss L6 that waste-heat rejection L1, radiant heat cause, the sensible heat of taking out of together with the combustion slag calculates, and its result is as shown in table 6.
The result of the burning condition of table 6 boiler and heat loss ratio
| Embodiment |
| 3 | |
| The capacity t/h of boiler | 10 |
| Delivery temperature (AH outlet) excess air ratio exhaust O 2％ | 168 1.6 8.0％ |
| The detailed description L1 exhaust sensible heat L3+L4 imperfect combustion L5 radiation heat loss L6 heat that solid is with of the heat loss of boiler | 7.8％ 15.8％ 3.1％ 0.7％ |
| Boiler efficiency low level benchmark heat loss method | 72.6％ |
Therefore, boiler efficiency η b is as follows.
ηb＝1-∑L＝72.6％
If institute's calorific requirement of the boiler of 10t/h is 5,390,000Kcal/h, then per 1 hour coal consumption amount is as follows.
The coal consumption amount [Kg/h]=5,390 of boiler, 000/CV/ η b=1,190
If the steaming hour in 1 year is 8000 hours, then the coal consumption amount in 1 year is as follows.
The coal consumption amount [t/y]=9,521 in 1 year
(embodiment 4)
The total moisture M of object coal, ash content A, volatile matter VM are as described in the embodiment 4 of table 7.This moment employed boiler effective length L=6m, the transporting velocity V=9m/h of grate.The excess air ratio that the air supply amount will not produce coal smoke and efficient maximum is set at m=1.6.
The property list of table 7 coal
| Embodiment |
| 4 | |
| The total sulphur content wt%-DB of coal character total moisture wt%-AR M ash content wt%-AR A volatile matter wt%-AR high calorific power kcal/kg-AR low heat valve kcal/kg-AR CV C wt%-AR H wt%-AR O wt%-AR N wt%-AR S wt%-AR volatile matter wt%-DAF VM representative diameter Dp cm | 9.4 21.3 26.6 5,560 5,300 57.3 3.7 6.9 1.1 0.3 38.4 0.6 2.5 |
In each physical property substitution aforesaid (3) formula with these coals, calculate coal burning amount W.At this moment, ask for carbon burning coefficient F with following formula.
F＝F1×AF×δ
F1 is as shown in the formula described in this formula.
F1＝(-j×Dp+k×A-1)×CR
2
+(m×Dp-n×A+o)×CR
+(-p×Dp+q×A-r)
Wherein, CR is the characteristic coefficient that is determined by the Analysis Values of coal and elementary analysis value,, makes CR=5.629 here.
Dp is the representative diameter of coal, is 2.5cm.
AF utilizes relevant coefficient with air, can calculate by enough following formulas.
AF＝α×(1/EX)
β
Here, EX is an excess air ratio, and the numerical value of α, β makes α=0.889, β=0.75 respectively for just.
δ is the coefficient relevant with equipment energy characteristic and is 0～1.0 positive numerical value, makes δ=1 here.
The numerical value of j, k, l, m, n, o, p, q, r is set respectively as described below for just.
j＝0.0007 k＝0.00005 l＝0.0034
m＝0.0023 n＝0.0008 o＝0.1129
p＝0.0091 q＝0.0025 r＝0.1688
When utilizing above value to calculate, obtain following value.
AF＝0.625
F1＝0.304
∑Fj＝0.190
L/V＝0.667
∑Mj＝0.175
∑Gj＝1.672
W＝86.772[Kg/m
2]
In addition, the coal amount B that puts in the boiler this moment is every 1m
2Grate 91.91kg.Therefore, use (6) formula, the ratio of trying to achieve the heat loss that the unburned carbon in the combustion slag causes is as follows.In (6) formula, the actual value of ratio D from boiler of the heat loss that causes because of dust in the exhaust etc. is seen as 1.8%.
Calculate the generation U of unburned carbon with following formula.
B＝91.91
U＝(B-W)＝5.14
Calculate the heat loss ratio L4 that the unburned part in the combustion slag causes with following formula.
D＝1.8％
L4＝U×8100/(B×CV)+D＝10.3％
Making L3 is 0, calculates efficiency of combustion η c with following formula.
ηc＝1-L3-L4＝89.7％
Based on jIS, to heat loss L5 and other heat loss L6 that waste-heat rejection L1, radiant heat cause, the sensible heat of taking out of together with the combustion slag calculates, and its result is as shown in table 8.
The result of the burning condition of table 8 boiler and heat loss ratio
| Embodiment |
| 4 | |
| The capacity t/h of boiler | 10 |
| Delivery temperature (AH outlet) excess air ratio exhaust O 2％ | 168 1.6 8.0％ |
| The detailed description L1 exhaust sensible heat exhaust latent heat L3+L4 imperfect combustion L6 solid of the heat loss of boiler is with heat L5 radiation heat loss | 8.3％ 0.0％ 9.7％ 0.8％ 3.1％ |
| Boiler efficiency low level benchmark heat loss method | 78.1％ |
Therefore, boiler efficiency η b is as follows.
That is η b=1-∑ L=78.1%,
If institute's calorific requirement of the boiler of 10t/h is 5,390,000Kcal/h, then per 1 hour coal consumption amount is as follows.
The coal consumption amount [Kg/h]=5,390 of boiler, 000/CV/ η b=1,302
If the steaming hour in 1 year is 8,000 hours, then the coal consumption amount in 1 year is as follows.
The coal consumption amount (t/y)=10,414 in 1 year
Industrial utilizability
The present invention relates to the burning adaptability Forecasting Methodology of coal, can be used in the burning adaptability of the coal in the prediction firing machine boiler when in having the firing machine boiler of grate, making coal burning. In addition, the recording medium that the present invention relates to coal intermediary transaction system, coal intermediary method of commerce, is used for carrying out the program of this method of commerce and recorded this program can be used when intermediary's transaction of coal.
Claims (18)
1. the burning adaptability Forecasting Methodology of a coal when firing machine boiler that has a grate in utilization makes coal burning, is predicted the burning adaptability of coal, it is characterized in that:
Adopt following mechanism:
Store the information relevant with described coal the Coal Information storing mechanism,
Store the information relevant with described boiler the boiler information storage mechanism,
With with reference to information relevant and the information relevant with described coal with described boiler, ask for the coal burning amount when under the condition of described boiler, making described coal burning and predict the arithmetical organ of described coal with respect to the burning adaptability of described boiler from the coal burning amount that is obtained
Have following step:
In described Coal Information storing mechanism the storage comprise at least the property feature value of ash content A, total moisture M and volatile matter VM be used as the Coal Information storing step of the information relevant with described coal,
In described boiler information storage mechanism storage comprise the information of described firing machine boiler of grate unit are be used as the boiler information storing step of the information relevant with above-mentioned boiler,
With forecast combustion adaptability step, utilize described arithmetical organ, with reference to information relevant and the information relevant with described coal with described boiler, ask for the coal burning amount of the grate per unit area when under the condition of described firing machine boiler, making described coal burning, with this coal burning amount is burning adaptability in the basic forecast firing machine boiler
Use following formula or its approximate expression to ask for aforementioned coal burning amount W,
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor of boiler
F: carbon burning coefficient.
2. the burning adaptability Forecasting Methodology of coal as claimed in claim 1 is characterized in that: (1a) formula below using or (1b) any approximate expression of formula or they ask for aforementioned carbon burning coefficient F,
F＝-a×VM+b×A(1-c×A)+d ......(1a)
Wherein, the numerical value of a, b, c, d is for just
F＝-e×VM-f×A-g×HCV+h ......(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just.
3. the burning adaptability Forecasting Methodology of coal as claimed in claim 1 is characterized in that: will ask for aforementioned carbon burning coefficient F in the coal representative diameter substitution variable.
4. the burning adaptability Forecasting Methodology of coal as claimed in claim 3 is characterized in that: use following formula or its approximate expression to ask for aforementioned carbon burning coefficient F,
F＝F1×AF×δ ......(1c)
F1＝(-j×Dp+k×A-1)×CR
2+(m×Dp-n×A+o)×CR+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic.
5. as the burning adaptability Forecasting Methodology of each described coal of claim 1～4, it is characterized in that: will in the air quantity delivered ratio substitution variable in the grate each several part of total air that the firing machine boiler is supplied with or total air quantity delivered and firing machine boiler, ask for aforementioned coal burning amount W.
6. the burning adaptability Forecasting Methodology of coal as claimed in claim 5 is characterized in that: use following formula or its approximate expression to ask for aforementioned coal burning amount W,
W＝∑Mj×Gj×Tj×∑Fj/(1-A-M)/(1-VM)
Wherein, subscript j: the sequence number of the position of expression grate length
Mj: the coefficient relevant with air capacity
Gj: the air capacity that supplies to grate j position in the Tj time
Tj: the holdup time of grate j position.
7. as the burning adaptability Forecasting Methodology of each described coal of claim 1～4, it is characterized in that: will ask for aforementioned coal burning amount W in the grate speed substitution variable.
8. the burning adaptability Forecasting Methodology of coal as claimed in claim 7 is characterized in that: use following formula or its approximate expression to ask for aforementioned coal burning amount W,
W＝(L/V)×∑(Mj×Gj)×∑Fj/(1-A-M)/(1-VM)
Wherein, V: grate speed
L: the effective length of grate.
9. as the burning adaptability Forecasting Methodology of each described coal of claim 1～4, it is characterized in that: use aforementioned coal burning amount to predict boiler efficiency and efficiency of combustion.
10. the burning adaptability Forecasting Methodology of coal as claimed in claim 9 is characterized in that: ask for aforementioned boiler efficiency according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993).
11. the burning adaptability Forecasting Methodology of coal as claimed in claim 9 is characterized in that: ask for previous combustion efficient according to " heat loss method " in the Japanese Industrial Standards " level land boiler hot account form " (B 8222-1993),
, use the predictor formula of following formula here as the formed heat loss L4 of unburned part in the combustion slag,
L4＝{(B-W)×8100/(B×CV)}+D
Wherein, B: put into the coal amount in the boiler
CV: heating value of coal
D: the heat loss that causes because of dust in the exhaust etc.
12. the burning adaptability Forecasting Methodology as each described coal of claim 1～4 is characterized in that: prediction coal smoke generation and/or SO
xAmount;
Use following formula to ask for aforementioned SO
xAmount,
SO
x[Nm
3/ Nm
3Exhaust]=sulphur content [kg/kg coal] * (22.4/32)/dried capacity [Nm
3/ kg coal].
13. a coal intermediary transaction system the seller who sells coal and buy between the buyer of the employed coal of boiler, plays intermediation to the transaction of coal, it is characterized in that: have:
Stored the Coal Information storing mechanism of the relevant information of a plurality of and aforementioned coal according to each coal kind;
Store the boiler information storage mechanism of the information relevant with aforementioned boiler;
Select prompting mechanism, this mechanism is with reference to information relevant with described boiler and the information relevant with described coal, coal burning amount when asking for the coal burning that under the condition of described boiler, makes each coal kind, and the suitable precedence of coal kind that is suitable for the burning of described boiler from the coal burning amount prediction of every kind of coal being obtained is selected this suitable precedence high a kind or multiple coal and is prompted to aforementioned buyer;
Described Coal Information storing mechanism has been stored ash content A, total moisture M and the volatile matter VM conduct information relevant with described coal that is contained in the coal at least,
Aforementioned selection prompting mechanism uses following formula or its approximate expression to ask for aforementioned coal burning amount W,
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor of boiler
F: carbon burning coefficient.
14. coal as claimed in claim 13 intermediary transaction system is characterized in that: (1a) formula below using, (1b) formula or (1c) any approximate expression of formula or they ask for aforementioned carbon burning coefficient F,
F＝-a×VM+b×A(1-c×A)+d ......(1a)
Wherein, the numerical value of a, b, c, d is for just
F＝-e×VM-f×A-g×HCV+h ......(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just
F＝F1×AF×δ ......(1c)
F1＝(-j×Dp+k×A-1)×CR
2+(m×Dp-n×A+o)×CR+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic
15. as claim 13 or 14 described coal intermediary transaction systems, it is characterized in that,
Have the server, boiler user terminal, the coal mining dealer terminal that connect via the internet,
Described coal mining dealer terminal can be set the information relevant with described coal in described Coal Information storing mechanism,
Described boiler user terminal can be set the information relevant with described boiler in described boiler information storage mechanism, and can export the object information that comes from described selection prompting mechanism.
16. a coal intermediary method of commerce the seller who sells coal and buy between the buyer of the employed coal of boiler, plays intermediation to the transaction of coal, it is characterized in that:
Use following mechanism:
According to the Coal Information storing mechanism of the relevant information of a plurality of and described coal of coal kind storage,
Store the information relevant with described boiler the boiler information storage mechanism,
Information relevant with described boiler with reference and the Information Selection relevant with described coal are suitable for one or more coals of described boiler combustion and are prompted to described buyer's selection prompting mechanism,
Comprise the steps:
With the information relevant with described coal according to each coal kind be stored in Coal Information storing step in the Coal Information storing mechanism,
Will the information relevant be stored in described boiler boiler information storing step in the boiler information storage mechanism,
Utilize described selection prompting mechanism, the coal burning amount when relevant information is asked for the coal burning that makes each coal kind under the condition of described boiler with reference to the information relevant with described boiler with described coal and from the coal burning amount of every kind of coal being obtained predict the suitable precedence of the coal kind that is suitable for burning suitable precedence prediction steps,
One or more coals that the suitable precedence that selection is predicted is high and the selection of pointing out prompting step,
At least ash content A, total moisture M that adopts in the coal to be comprised and volatile matter VM be as the information relevant with described coal,
In described suitable precedence prediction steps, use following formula or its approximate expression to ask for aforementioned coal burning amount W,
W＝K×F/(1-A-M)/(1-VM)
Wherein, K: the stream factor of boiler
F: carbon burning coefficient.
17. coal as claimed in claim 15 intermediary method of commerce is characterized in that: (1a) formula below using, (1b) formula or (1c) any approximate expression of formula or they ask for aforementioned carbon burning coefficient F,
F＝-a×VM+b×A(1-c×A)+d ......(1a)
Wherein, the numerical value of a, b, c, d is for just
F＝-e×VM-f×A-g×HCV+h ......(1b)
Wherein, HCV is the high calorific power of heated drying benchmark
The numerical value of e, f, g, h is for just
F＝F1×AF×δ ......(1c)
F1＝(-j×Dp+k×A-1)×CR
2+(m×Dp-n×A+o)×CR+(-p×Dp+q×A-r)
Wherein, CR: the characteristic coefficient that is determined by the Analysis Values and the elementary analysis value of coal
Dp: the representative diameter of coal
A: ash content
The numerical value of j, k, l, m, n, o, p, q, r is for just
AF＝α×(1/EX)
β
Wherein, AF: utilize relevant coefficient with air
EX: excess air ratio
The numerical value of α, β is for just
δ: the coefficient relevant and be 0～1.0 positive numerical value with equipment energy characteristic
18. as claim 16 or 17 described coal intermediary method of commerce,
Also adopt the server, boiler user terminal and the coal mining dealer terminal that connect through the internet,
In the storage of described Coal Information, from the described coal mining dealer terminal input information relevant and described Coal Information storing mechanism, set with described coal,
In described boiler information storing step, from the described boiler user terminal input information relevant and described boiler information storage mechanism, set with described boiler,
In described selection prompting step, the object information that will come from described selection prompting mechanism outputs to described boiler user terminal.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP252725/2001 | 2001-08-23 | ||
| JP2001252726 | 2001-08-23 | ||
| JP2001252725 | 2001-08-23 | ||
| JP252726/2001 | 2001-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1575397A CN1575397A (en) | 2005-02-02 |
| CN100338390C true CN100338390C (en) | 2007-09-19 |
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ID=26620853
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|---|---|---|---|
| CNB02821000XA Expired - Fee Related CN100338390C (en) | 2001-08-23 | 2002-08-22 | Method for predicting coal combustion suitability, coal mediation/transaction system, coal mediation/transaction method, program for executing the transaction method, and recording medium having the program recorded thereon |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2003019078A1 (en) |
| CN (1) | CN100338390C (en) |
| WO (1) | WO2003019078A1 (en) |
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| JP4931385B2 (en) * | 2005-08-23 | 2012-05-16 | 中国電力株式会社 | Coal / woody biomass mixed fuel collection / sales system and method |
| JP5197032B2 (en) * | 2008-01-18 | 2013-05-15 | 中国電力株式会社 | Combustion state simulation method, program, storage medium, and combustion state simulation apparatus |
| CN104776445B (en) * | 2015-04-30 | 2017-03-01 | 刘逸卓 | A kind of method determining coal volatile combustion required air quantity and application |
| CN105181926A (en) * | 2015-08-25 | 2015-12-23 | 南京南瑞继保电气有限公司 | Heat-balance-based soft sensing method for fire coal calorific value of coal-gas boiler realizing blending combustion of pulverized coal |
| CN110320881B (en) * | 2019-08-06 | 2022-03-22 | 张华东 | Wisdom fuel system of thermal power factory |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60248903A (en) * | 1984-05-24 | 1985-12-09 | 三菱重工業株式会社 | Method of operating coal burining boiler |
| JPS61243206A (en) * | 1985-04-19 | 1986-10-29 | Takuma Co Ltd | Steam boiler |
| JPH1054547A (en) * | 1996-08-09 | 1998-02-24 | Ishikawajima Harima Heavy Ind Co Ltd | Nitrogen oxide concentration estimation method for coal burning boiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143602U (en) * | 1984-08-24 | 1986-03-22 | バブコツク日立株式会社 | Stoker type combustion device |
-
2002
- 2002-08-22 JP JP2003523902A patent/JPWO2003019078A1/en active Pending
- 2002-08-22 WO PCT/JP2002/008460 patent/WO2003019078A1/en active Application Filing
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60248903A (en) * | 1984-05-24 | 1985-12-09 | 三菱重工業株式会社 | Method of operating coal burining boiler |
| JPS61243206A (en) * | 1985-04-19 | 1986-10-29 | Takuma Co Ltd | Steam boiler |
| JPH1054547A (en) * | 1996-08-09 | 1998-02-24 | Ishikawajima Harima Heavy Ind Co Ltd | Nitrogen oxide concentration estimation method for coal burning boiler |
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| Publication number | Publication date |
|---|---|
| CN1575397A (en) | 2005-02-02 |
| WO2003019078A1 (en) | 2003-03-06 |
| JPWO2003019078A1 (en) | 2004-12-16 |
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