CN104236285B - Drying device and the drying means using the drying device - Google Patents
Drying device and the drying means using the drying device Download PDFInfo
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- CN104236285B CN104236285B CN201410250658.8A CN201410250658A CN104236285B CN 104236285 B CN104236285 B CN 104236285B CN 201410250658 A CN201410250658 A CN 201410250658A CN 104236285 B CN104236285 B CN 104236285B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The present invention provides a kind of drying device and the drying means using the drying device.The drying device (100) includes：Chimney (20), it is used to be discharged in air from the burning waste gas in the coke oven (10) that flue (11) supplies；Fluidized bed drying machine (30), it dries wet raw material by making wet raw material be contacted with burning waste gas, so as to obtain dried object；And flow path (21), it is used to burning waste gas being supplied to fluidized bed drying machine (30).Flow path (21) and the lower part of chimney (20) link, for the burning waste gas in chimney (20) to be supplied to fluidized bed drying machine (30).
Description
Technical field
The present invention relates to for drying the drying device of wet raw material and the drying means using the drying device.
Background technology
As the device for wet raw materials such as the dry coals containing moisture, it is known to a kind of fluidized bed drying machine, should
Fluidized bed drying machine is by making wet raw material be contacted with the gas of high temperature, so that wet raw material is dried while flowing.
Since fluidized bed drying machine being capable of dry powdered wet raw material, thus apply flexibly in various fields in large quantities.
For example, in the case where producing coke, for the purpose of improving the productivity in coke quality and raising coke oven, in advance
The coal dust for making to be encased in the coke oven in coke oven using fluidized bed drying machine is dried.The moisture content of the coal dust of coke oven before drying
Usually weight % of 9 weight %~13 or so.Such coal dust is dried by using fluidized bed drying machine, so as to reduce
The moisture content of coke oven coal.
As the drying gas used in such fluidized bed drying machine, given up using the burning produced in coke oven
Gas.For example, in patent document 1 (No. 3825587 specifications of Japanese Patent Publication No.), motion has and will be produced and in flue in coke oven
The method that the burning waste gas of middle circulation is used as the drying of fluidized bed drying machine with gas.In such manner, it is possible to seek to efficiently use
The burning waste gas produced in coke oven.
However, also as described in patent document 1, carbonization chamber and combustion chamber row are configured in common chamber shaped coke oven
It is opposite across the brick of the thickness of about 100mm and be alternately arranged.Moreover, the heat produced in a combustion chamber passes to charcoal via brick
Change indoor coal dust.1 row of combustion chamber are usually divided into Room 26 to the cell of Room 34.The lower part of each combustion chamber is configured with accumulation of heat
Room.Each cell for the coke oven having a structure in which is grouped into two groups and (is set to " the 1st packet " and " the 2nd point below in the running
Group ".).
It is in progress accumulation of heat and regenerative chamber in the 1st packet of the condition of high temperature, fuel gas and air are in the regenerative chamber
It is preheated.On the fuel gas and air after preheating, fuel in combustion chamber gas and air on regenerative chamber top merge and
Burnt (upper up-flow).Then, the exhaust gas after burning sinks (sinking) in the combustion chamber of the 2nd packet.Exhaust gas is configuring
Discharged in the regenerative chamber of the lower part of the combustion chamber after recuperation of heat via flue.
The temperature of the regenerative chamber of 1st packet is gradually reduced by being preheated to gas.On the other hand, the 2nd packet
The temperature of regenerative chamber is gradually increasing by carrying out accumulation of heat to the heat of exhaust gas and temperature.When by the set time, respectively will it carry out
1st packet is switched to accumulation of heat side, the 2nd packet is switched to the operation of combustion side.By carrying out the switching work every the set time
Industry, so that warm-up operation and heat storage operation are alternately carried out respectively in the 1st packet and the 2nd packet, so as to improve heat storage efficiency.
In this way, the operation that the state for making combustion chamber is alternately switched to combustion side and sinking side is known as " burning switches ".
When carrying out above-mentioned such " burning switching ", the generation of the burning waste gas in coke oven is temporarily interrupted.Therefore, exist
In fluidized bed drying machine, in the case where using burning waste gas as drying gas, due to being dried at " the burning switching "
Flow-reduction or stopping with gas, accordingly, there exist the situation for being difficult to stably persistently be dried.In order to tackle such feelings
Condition, in patent document 1, motion have a kind of by making to dry as fluidized bed from the gas circulation of fluidized bed drying machine discharge
The method that the supply gas of machine is recycled.
When coke is produced in coke oven, in order to improve the stability of coke production, it is desirable to strongly suppress to use as raw material
Coal character deviation.Here, using the moisture content for the dried object that fluidized bed drying machine is dry and obtains because of wet raw material
Moisture content, the temperature of drying gas and the influence of moisture content etc. and change.
Therefore, in technology as patent document 1, reply may be needed to make fluidized bed in " the burning switching " of coke oven
The situation of the treating capacity reduction of drying machine etc..Thus, seek to ensure that a kind of can stably produce reaches the dry of target dryness
Dry thing and the technology that the variation of the water content of dried object can be suppressed.
The content of the invention
Problems to be solved by the invention
The present invention is to make in view of the foregoing, and its purpose is to provide also can in the burning switching of coke oven
The drying device and drying means for stably operating persistently fluidized bed drying machine.
The solution used to solve the problem
The technical solution of the present invention provides a kind of drying device, which includes：Chimney, it is used for from flue
The burning waste gas of the coke oven of supply is discharged in air；Fluidized bed drying machine, it is by making wet raw material be contacted with burning waste gas
To dry wet raw material, so as to obtain dried object；And flow path, it is used to burning waste gas being supplied to fluidized bed drying machine, stream
Road and the lower part of chimney link, for the burning waste gas in chimney to be supplied to fluidized bed drying machine.
According to the drying device of the invention described above, the burning waste gas of coke oven of chimney can will be supplied to from flue constantly
It is supplied to fluidized bed drying machine.That is, during " the burning switching " of coke oven, the burning waste gas being trapped in chimney can also be supplied
It is given to fluidized bed drying machine.Thus, coke oven burning switching when, can reduce for fluidized bed drying machine treating capacity significantly
Degree ground reduces or prepares the reply instead of gas etc. with relatively low water content.Thus, fluidized bed drying machine can be stably
Continuous running.The deviation of the water content of the dried object obtained using such fluidized bed drying machine can fully be reduced.Cause
And drying device of the invention also contributes to the steady running of the device in downstream and the Quality advance of product.
In the drying device of the present invention, it is preferred that above-mentioned burning waste gas is intermittently supplied to chimney from coke oven,
The supply dwell time of burning waste gas from coke oven is set to t (hour), the evaporation heat of water is set to Q1(MJ/ton-
Water), the heat of burning waste gas is set to Q2(MJ/Nm3), the quantity delivered of wet raw material is set to M (when ton/ is small), will moistening it is former
The moisture content of material and the moisture content of dried object are set to m1(quality %) and m2(quality %) and by chimney and flow path
When the temperature of burning waste gas is set to T, the cigarette of the upper end of the link mouth of ratio flow path in the internal volume and chimney of flow path by the top
Aggregate value V (the m of the internal volume of cylinder3) meet formula 1.
V≥[M×(m1-m2)×(Q1/Q2)×t]×(273+T)/273 (1)
If with the aggregate value V for meeting above-mentioned formula (1), the uncomfortable whole fluidized bed drying during " burning switching "
The treating capacity of machine, can also suppress to supply air to drying device.
The drying device of the present invention can also include：Oxygen detection portion, it is used to detect at least one in chimney and flow path
The oxygen of the inside of person；Flow control division, it is used for the confession that the burning waste gas supplied to fluidized bed drying machine is adjusted in flow path
To amount；And control unit, it controls flow control division according to the testing result in oxygen detection portion.Thereby, it is possible to be adequately suppressed
It is flowed into from the upper end leaked-in air of chimney in flow path and fluidized bed drying machine.
Another technical solution of the present invention provides a kind of drying means using drying device, it uses drying device
The drying means of wet raw material, the drying device include：Chimney, it is used for the burning waste gas discharge for the coke oven that will be supplied from flue
Into air；Fluidized bed drying machine, it dries wet raw material by making wet raw material be contacted with burning waste gas, so as to obtain dry
Dry thing；And flow path, it is used to burning waste gas being supplied to fluidized bed drying machine, this is had using the drying means of drying device
There is following process：The process that the burning waste gas of coke oven is supplied from flue to chimney；And the burning waste gas in chimney is supplied to
Fluidized bed drying machine come make wet raw material dry process.
Drying means according to the present invention, the burning waste gas that can be fed into the coke oven of chimney are continuously supplied to flow
Layer drying machine.Therefore, when " the burning switching " of coke oven, also the burning waste gas being trapped in chimney can be supplied to stream
Dynamic layer drying machine.Thus, in the burning switching of coke oven, the treating capacity that can be reduced for fluidized bed drying machine significantly drops
Low or reply instead of gas etc. of the preparation with relatively low water content.Thus, it is possible to stably sustainable utilization fluidized bed is dried
Machine carries out the dry operating of wet raw material.
, can also be during stopping supplying burning waste gas from flue to chimney, by chimney in above-mentioned drying means
Interior burning waste gas is supplied to fluidized bed drying machine.In addition, the drying means can also have following process：According to chimney and stream
Oxygen concentration in the inside at least one of road, controls the quantity delivered of the burning waste gas supplied to fluidized bed drying machine.It is logical
Crossing has such process, can be adequately suppressed from the upper end leaked-in air of chimney and be flowed into flow path and fluidized bed drying machine
In, and security can be further improved.
In accordance with the invention it is possible to providing when a kind of burning even in coke oven switches also can stably do constant flow layer
The drying device and drying means of the operating of dry machine.
Brief description of the drawings
Fig. 1 is the figure of the schematic configuration for the embodiment for representing the drying device of the present invention.
Fig. 2 is the chimney for the embodiment for schematically showing the drying device of the present invention and the section view of its periphery
Figure.
Embodiment
The preferred embodiment of the drying device of the present invention is explained referring to the drawings.But the present invention is not
It is defined in following embodiment.In addition, identical reference numeral is marked to key element identical or equal in attached drawing, and according to feelings
The repetitive description thereof will be omitted for condition.
Fig. 1 is the figure of the schematic configuration for the drying device 100 for representing present embodiment.Drying device 100 include coke oven 10,
The chimney 20 linked using flue 11 and coke oven 10 and the fluidized bed drying machine 30 linked using pipe arrangement 21 with chimney 20.
In coke oven 10, for example, with the production of coke, produce containing the carbon dioxide as main component and nitrogen
Burning waste gas.In the case that coke production amount in coke oven 10 is 1000 ton per days (loading carbon (wet) 60 tons/h) left and right, in Jiao
The amount of the burning waste gas produced in 1 coke oven battery of stove 10 is, for example, 60000m3/ h or so.The burning produced in coke oven 10 is given up
Gas is directed to chimney 20 by flue 11.The temperature of burning waste gas during by flue 11 is, for example, 150 DEG C~300 DEG C.
Fig. 2 is the sectional view for schematically showing chimney and its periphery included by the drying device of present embodiment.
Than the position of ground G on the lower, flue 11 is linked with the bottom of chimney 20.In addition, chimney 20 is referred to netted line
Position.The occurrence quantity of burning waste gas in coke oven 10 is more than the situation of the consumption of the burning waste gas in fluidized bed drying machine 30
Under, the burning waste gas for having passed through flue 11 is directed to chimney 20, and is moved upward in chimney 20 so as to from chimney 20
Top is diffused into air.Pipe arrangement 21 is linked with being formed at the link mouth 24 of the lower part of chimney 20, which is to stream
Dynamic layer drying machine 30 supplies the flow path of the burning waste gas as drying gas.Pipe arrangement 21 is configured to from chimney 20 to flowing
Layer drying machine 30 supplies burning waste gas.
The occurrence quantity of burning waste gas in coke oven 10 is less than the consumption of the burning waste gas in fluidized bed drying machine 30
In the case of, burning waste gas is flowed along the arrow 60,62 of Fig. 1 from the top of the link mouth 24 of chimney 20 towards fluidized bed drying machine 30
It is logical.In this way, at 24 periphery of link mouth in flue 11 and in being led than linking the burning waste gas at the position of mouth 24 by the top
Enter to pipe arrangement 21.
The drying device 100 of present embodiment by applying flexibly the burning waste gas being detained in the chimney 20 in coke oven, even if
Coke oven 10 burning switching when etc. the burning waste gas from coke oven 10 quantity delivered reduce or stop in the case of, also can
Burning waste gas is continually provided to fluidized bed drying machine 30.Therefore, even if intermittently supplying burning to chimney 20 from coke oven 10
Exhaust gas, is also capable of the steady running of constant flow layer drying machine 30.In addition, done with from chimney 20 via pipe arrangement 21 to fluidized bed
The top that dry machine 30 supplies burning waste gas and is produced from chimney 20 flows into the situation of air to the inside of chimney 20.
The coupling position of chimney 20 and pipe arrangement 21, link the lower part that mouth 24 is arranged on chimney 20.That is, by away from chimney 20
When the height of bottom surface is set to H, links mouth 24 and be arranged on height position on the lower than the bottom surface with chimney 20 at a distance of 1/2H.From having
Effect ground using chimney 20 internal volume from the viewpoint of, preferably link mouth 24 be arranged on than with bottom surface at a distance of 1/3H height on the lower
Position.In the present embodiment, set at the base portion of chimney 20 and link mouth 24, linked at mouth 24, be linked to chimney certainly
20 pipe arrangement 21 supplies burning waste gas to fluidized bed drying machine 30.In this way, it is arranged on the relatively low of chimney 20 by the way that mouth 24 will be linked
Position, so as to make burning waste gas fully be trapped in than linking the upper position of mouth 24.
In the present embodiment, mouth 24 will be linked and is arranged on the position more upper than ground G, but in other embodiments
In, it can also will link mouth 24 arranged on the position than ground G on the lower.In addition, from addition to coke oven 10 stove (such as,
Rolling with heating furnace, C.A.P.L-Continuous Annealing Processing Line) exhaust gas utilization and flue 11
In the case that different other flues are supplied to chimney 20, the exhaust gas of the stove from this in addition to coke oven 10, which can also be used as, to be done
It is dry to be efficiently used with gas.
In the present embodiment, during burning waste gas is fed with to chimney 20, chimney 20 is caused because of burning waste gas
Wall become high temperature.Thus, even in burning switching Airflow enter chimney 20, the air also due to the wall of chimney 20 and
It is heated, becomes the temperature higher than the air (extraneous air) not being flowed into chimney 20.Thus, switch in the burning of coke oven 10
During completion, the air by the high temperature in chimney 20 and the air-flow of burning waste gas generation are utilized so that from coke oven 10 to chimney 20
Burning waste gas is recovered with flowing smoothly.
It is preferred that link the inflow entrance 23 of mouth 24 and flue 11 in chimney 20 seen from above with across the central shaft of chimney 20
The opposite mode of line is set.In this way, by making link mouth 24 be separated with inflow entrance 23, the pressure of coke oven 10 can be adequately suppressed
Change.
The internal volume of chimney 20 does not have particular determination, preferably has to supply to fluidized bed drying machine 30 often and fixes
The internal volume of the degree of the burning waste gas of amount.For example, it is preferable to by the side wall of chimney 20, the upper end for linking mouth 24 by chimney 20
And the horizontal plane A parallel with ground G and pass through the top of chimney 20 and internal volume that the horizontal plane B parallel with ground G is surrounded
V1(m3) and pipe arrangement 21 internal volume V2(m3) aggregate value V (m3) meet following formulas (1).
V≥[M×(m1-m2)×(Q1/Q2)×t]×(273+T)/273 (1)
V=V1+V2 (2)
In formula (1), t (hour) represents to cause due to burning switching of coke oven 10 etc. the burning waste gas from coke oven 10
Supply the time stopped, Q1(MJ/ton- water) represents the evaporation heat of water, Q2(MJ/Nm3) represent burning waste gas heat, M
(when ton/ is small) represents the quantity delivered of the wet raw material of fluidized bed drying machine 30, m1(quality %) and m2(quality %) is represented respectively
The moisture content of wet raw material and dried object, T represent the temperature of chimney 20 and the burning waste gas in flow path 21.
Represent to use service data of the coal dust as the drying device 100 in the case of wet raw material in table 1.According to so
Service data, the right of above-mentioned formula (1) can be calculated.
Table 1
In table 1, the number range of projects only shows service data during common operating, the numerical value of projects
It is not limited to the value of table 1.In addition, VN、VTRepresent the desired amount of benchmark calculated according to each service data, burning waste gas.
The right of above-mentioned formula (1) is equivalent to the V in table 1T.If the aggregate value V (m calculated using above-mentioned formula (2)3) become VT
Volume above then meets formula (1).If become the aggregate value V (m for meeting the formula (1)3), then can suppress air to stream
The inflow of dynamic layer drying machine 30.
As oxygen detection portion, the oxygen concentration for detecting oxygen concentration can also be set on chimney 20 or pipe arrangement 21
Meter 22.Thereby, it is possible to avoid the top leaked-in air (oxygen) from chimney 20 from being fed into the inside of fluidized bed drying machine 30.
As oxygen densitometer 22, the oxygen densitometer usually sold in the market can be used.In addition, come from a security point
See, preferably the oxygen concentration of the inside of chimney 20 and the inside of pipe arrangement 21 is below 13 volume %.
The flow tune for the quantity delivered for being used to adjust the burning waste gas supplied to fluidized bed drying machine 30 is equipped with pipe arrangement 21
Save valve 26.The signal for the oxygen concentration measured using oxygen densitometer 22 is sent to control unit 52.From oxygen densitometer 22
The control unit 52 of the signal of oxygen concentration is received to 26 transmitted traffic Regulate signal of flow control valve.26 basis of flow control valve
The flow regulating signal received from control unit 52 adjusts the flow of burning waste gas.
For example, control unit 52 is flowing into substantial amounts of air from the top of chimney 20 and is being leaned on certainly arranged on specific discharge regulating valve 26
In the case that the oxygen densitometer 22 of the position of upstream side receives the signal more than the oxygen concentration of upper limit value, flow tune is utilized
Valve 26 is saved, reduces or stop the quantity delivered of the burning waste gas supplied to fluidized bed drying machine 30.In such manner, it is possible to suppress chimney 20
Oxygen concentration in lower part and pipe arrangement 21 exceedes upper limit value and rises.Flowed in addition, oxygen can be reduced to fluidized bed drying machine 30
The influx entered.
The control method of flow control valve 26 is not limited to above-mentioned method, is come from for example, can also be configured to basis
The occurrence quantity of the burning waste gas of coke oven 10, the burning waste gas to the supply of fluidized bed drying machine 30 is adjusted using flow control valve 26
Flow.
Forced ventilation 38 is equipped with the position of 26 downstream of specific discharge regulating valve of pipe arrangement 21.Using forced ventilation 38,
Drying gas of the burning waste gas as wet raw material is supplied to fluidized bed drying machine 30.Burning waste gas is dried from fluidized bed is arranged on
The gas discharge outlet 33 of the gas supply port 32 of the bottom of the main part 36 of machine 30 towards the top wall portion arranged on main part 36 circulates.
Have the function of to make burning waste gas be distributed in dry place in the inside of fluidized bed drying machine 30, it is former equipped with moistening can be limited
Material moves downwards and can make the dispersion plate 34 that burning waste gas circulates upward.
The supply unit 31 of the wet raw material for supplying coal etc. is connected with main part 36.In addition, connect in main part 36
It is connected to the discharge unit 37 for the dried object main body 36 after internally dry in main part 36 to be discharged to the outside.Supply unit
31 and discharge unit 37 set across main part 36.The moistening of the top of the dispersion plate 34 of main part 36 is encased in using supply unit 31
Raw material and the upper up-flow produced by floating because of the burning waste gas imported from gas supply port 32.In this way, pass through wet raw material
With from the burning waste gas that gas supply port 32 imports on dispersion plate 34 in main part 36 formed with fluidized bed 35.
At least a portion of moisture in fluidized bed 35 in wet raw material is removed, and being obtained from discharge unit 37 has regulation
Moisture content powdered dried object.In order to adjust the height of fluidized bed 35 to defined scope, preferably control flowing
Pressure difference on the above-below direction of layer 35.Pressure difference on the above-below direction of fluidized bed 35 can for example carry by adjusting from discharge unit 37
The amount of the dried object of taking-up and control.The extracted amount of dried object from discharge unit 37 can for example utilize rotary valve (not shown)
It is adjusted.
From the viewpoint of from the heat resistance of the drying efficiency of wet raw material and equipment, at gas supply port 32, burning is useless
The temperature of gas is, for example, 150 DEG C~300 DEG C.Using present embodiment drying device 100 dry wet raw material if containing
The solid contents such as the powder of moisture, then be not particularly limited, such as can to there are coal dust, metal powder or ceramic powder etc. powdered
Inorganic matter or powdered organic dust etc..
The moisture content for automatically supplying the wet raw material of the supply of portion 31 is, for example, the mass % of 5 mass %~30, is preferably 9 mass %
~13 mass %.On the other hand, the moisture content for the powdered dried object (xeraphium) discharged from discharge unit 37 is, for example, 10 matter
Below % is measured, is preferably the mass % of 5 mass %~11.In addition, in the present specification, the water content of wet raw material and dried object
The measurement of water content can use the measuring device of non-contact type microwave type to measure.The moisture content of dried object can pass through to
The quantity delivered and burning of the quantity delivered for the wet raw material that main part 36 supplies and the burning waste gas from gas supply port 32
Temperature of exhaust gas etc. is adjusted.In the case where dried object is coal dust, as the coal dust of coke oven, coke oven can be encased in
10。
Containing the moisture come from wet raw material and passed through the discharge gas of fluidized bed 35 by main part 36 from
It is discharged to the outside by spatial portion, and from gas discharge outlet 33 by gas discharge section 40.Gas discharge section 40 and main part 36
Gas discharge outlet 33 link, the gas discharge section 40 have be used for link form gas discharge section 40 each equipment pipe arrangement
42 and using pipe arrangement 42 link dust arrester 43 and induced draught fan 44.The discharge gas discharged from gas discharge outlet 33 is connected
The induced draught fan 44 tied in the downstream of dust arrester 43 induces and after circulation, air is discharged to from chimney 45 in pipe arrangement 42
In.Chimney 45 is the chimney different from the chimney 20 of burning waste gas.As dust arrester 43, it can use and be used to remove discharge gas
Bag collector of the dust such as the xeraphium contained in body etc..
Illustrate the example of drying means that wet raw material is dried using drying device 100.In the drying means
It is middle to be included using above-mentioned drying device 100, the above-mentioned drying device 100：Chimney 20, it is used to supply from flue 11
The burning waste gas of coke oven 10 is discharged in air；Fluidized bed drying machine 30, its by wet raw material is contacted with burning waste gas and
Wet raw material is dried, so as to obtain dried object；And pipe arrangement 21, it is used to burning waste gas being supplied to fluidized bed drying machine
30.The drying means has following process：The process that the burning waste gas of coke oven 10 is intermittently supplied from flue 11 to chimney 20；
And the burning waste gas in chimney 20 is continuously fed to fluidized bed drying machine 30 to make the process that wet raw material is dried.
Above-mentioned each operation can be carried out according to the explanation to above-mentioned drying device 100.Furthermore it is also possible to based on pair
The explanation of drying device 100 carries out the process in addition to these processes.It is also possible that there are for example according to utilization oxygen densitometer 22
The oxygen concentration of detection come control to fluidized bed drying machine 30 supply burning waste gas quantity delivered process.
Due to using drying device 100 in above-mentioned drying means, even if the burning from coke oven 10 to chimney 20 is given up
The supply of gas is reduced or stopped, and also constantly can supply burning waste gas to fluidized bed drying machine 30.Thus, will not make to flowing
The burning waste gas that layer drying machine 30 supplies is interrupted, and is capable of the drying of stably constant moisture raw material.Use such dry dress
The deviation of moisture content can fully be reduced by putting the dried object of 100 acquisitions, therefore, it is possible to reduce the variation of the device in downstream,
Improve quality.
The preferred embodiment of the present invention is this concludes the description of, but the present invention is not limited to above-mentioned embodiment.Example
Such as, exhaust gas can also be supplied from the equipment in addition to coke oven 10 to chimney 20.In addition, oxygen densitometer 22 can not be arranged on pipe arrangement
21, and near such as link mouth 24 of chimney 20, or arranged on both pipe arrangement 21 and chimney 20.Pipe arrangement 21 is arranged on utilizing
In the case of detecting oxygen concentration different from each other with the oxygen densitometer of both chimneys 20, for example, can be according to higher
The flow of the oxygen concentration adjustment burning waste gas of one.Furthermore it is also possible to by for adjusting what is supplied to fluidized bed drying machine 30
The heater or cooler of the temperature of burning waste gas are arranged on pipe arrangement 21.
Claims (5)
1. a kind of drying device, wherein,
The drying device includes：
Chimney, it is used to the burning waste gas of the coke oven supplied from flue being discharged in air；
Fluidized bed drying machine, it dries above-mentioned wet raw material by making wet raw material be contacted with above-mentioned burning waste gas, so as to obtain
Obtain dried object；And
Flow path, it is used to above-mentioned burning waste gas being supplied to above-mentioned fluidized bed drying machine,
The lower part of above-mentioned flow path and above-mentioned chimney links, for the above-mentioned burning waste gas in above-mentioned chimney to be supplied to above-mentioned flowing
Layer drying machine,
Above-mentioned burning waste gas is intermittently supplied from above-mentioned coke oven to above-mentioned chimney,
The supply dwell time of above-mentioned burning waste gas from above-mentioned coke oven is being set to t, the evaporation heat of water is set to Q1, will
The heat of above-mentioned burning waste gas is set to Q2, the quantity delivered of above-mentioned wet raw material is set to M, by the moisture content of above-mentioned wet raw material and
The moisture content of above-mentioned dried object is set to m1And m2And the temperature by the above-mentioned burning waste gas in above-mentioned chimney and above-mentioned flow path
When degree is set to T,
The content of the part of the upper end of the link mouth of the above-mentioned flow path of ratio of the internal volume of above-mentioned flow path and above-mentioned chimney by the top
Long-pending aggregate value V meets formula 1,
V≧[M×(m1-m2)×(Q1/Q2) × t] × the formula of (273+T)/273 1
Wherein, the unit of t is hour, Q1Unit be MJ/ton- water, Q2Unit be MJ/Nm3, when the unit of M is ton/ small,
m1、m2Unit be that the unit of quality %, V is m3。
2. drying device according to claim 1, wherein,
The drying device includes：
Oxygen detection portion, it is used for the oxygen for detecting the inside of at least one of above-mentioned chimney and above-mentioned flow path；
Flow control division, it is used in above-mentioned flow path the confession for adjusting the above-mentioned burning waste gas supplied to above-mentioned fluidized bed drying machine
To amount；And
Control unit, it is used to control above-mentioned flow control division according to the testing result in above-mentioned oxygen detection portion.
3. a kind of drying means, it is the drying means that wet raw material is dried using drying device, wherein,
The drying device includes：
Chimney, it is used to the burning waste gas of the coke oven supplied from flue being discharged in air；
Fluidized bed drying machine, it dries above-mentioned wet raw material by making wet raw material be contacted with above-mentioned burning waste gas, so as to obtain
Obtain dried object；And
Flow path, it is used to above-mentioned burning waste gas being supplied to above-mentioned fluidized bed drying machine,
The drying means has following process：
The process that the burning waste gas of above-mentioned coke oven is supplied from above-mentioned flue to above-mentioned chimney；And
Burning waste gas in above-mentioned chimney is supplied to above-mentioned fluidized bed drying machine to make the process of above-mentioned wet raw material drying,
In the above-mentioned operation for supplying above-mentioned burning waste gas, the supply of above-mentioned burning waste gas supplies to be intermittent,
The supply dwell time of above-mentioned burning waste gas from above-mentioned coke oven is being set to t, the evaporation heat of water is set to Q1, will
The heat of above-mentioned burning waste gas is set to Q2, the quantity delivered of above-mentioned wet raw material is set to M, by above-mentioned wet raw material moisture content and on
The moisture content for stating dried object is set to m1And m2And the temperature by the above-mentioned burning waste gas in above-mentioned chimney and above-mentioned flow path
When being set to T,
The content of the part of the upper end of the link mouth of the above-mentioned flow path of ratio of the internal volume of above-mentioned flow path and above-mentioned chimney by the top
Long-pending aggregate value V meets formula 1,
V≧[M×(m1-m2)×(Q1/Q2) × t] × the formula of (273+T)/273 1
Wherein, the unit of t is hour, Q1Unit be MJ/ton- water, Q2Unit be MJ/Nm3, when the unit of M is ton/ small,
m1、m2Unit be that the unit of quality %, V is m3。
4. drying means according to claim 3, wherein,
During stopping supplying above-mentioned burning waste gas from above-mentioned flue to above-mentioned chimney, the above-mentioned burning in above-mentioned chimney is given up
Gas is supplied to above-mentioned fluidized bed drying machine.
5. drying means according to claim 3, wherein,
The drying means has following process：
According to the oxygen concentration in the inside of at least one of above-mentioned chimney and above-mentioned flow path, control and dried to above-mentioned fluidized bed
The quantity delivered of the above-mentioned burning waste gas of machine supply.
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| JP2013124700A JP5410633B1 (en) | 2013-06-13 | 2013-06-13 | Drying apparatus and drying method using the drying apparatus |
| JP2013-124700 | 2013-06-13 |
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| CN103013615A (en) * | 2012-12-19 | 2013-04-03 | 华电电力科学研究院 | Efficient drying and quality-improving device and method for brown coal |
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| DE3121050C2 (en) * | 1981-05-27 | 1986-05-07 | Carl Still Gmbh & Co Kg, 4350 Recklinghausen | Process for equalizing the feed carbon mixtures for coking furnace batteries |
| JP2006232938A (en) * | 2005-02-23 | 2006-09-07 | Nippon Steel Corp | Apparatus for drying wet raw material |
| JP4787528B2 (en) * | 2005-04-08 | 2011-10-05 | 新日鉄エンジニアリング株式会社 | Wet raw material drying apparatus and drying method |
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| US3843458A (en) * | 1972-02-07 | 1974-10-22 | Waagner Biro American | Coal treating method and apparatus for coke plants |
| CN2061494U (en) * | 1989-11-09 | 1990-09-05 | 第二汽车制造厂 | Sand drying or cooling machine for static boiling bed |
| CN1285388A (en) * | 1999-08-18 | 2001-02-28 | 新日本制铁株式会社 | Method and apparatus for drying coal |
| JP3479628B2 (en) * | 2000-05-01 | 2003-12-15 | 株式会社カネコ | Carbonization equipment |
| JP2009120695A (en) * | 2007-11-14 | 2009-06-04 | Nippon Steel Corp | Method for fluidized bed-drying and classifying coal |
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| CN103123205A (en) * | 2013-03-07 | 2013-05-29 | 浙江大学 | Fluidization moving series arrangement steam drying system and technology |
Also Published As
| Publication number | Publication date |
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| CN104236285A (en) | 2014-12-24 |
| JP2015000882A (en) | 2015-01-05 |
| JP5410633B1 (en) | 2014-02-05 |
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