CN104236285A - A drying device and a drying method utilizing the drying device - Google Patents
A drying device and a drying method utilizing the drying device Download PDFInfo
- Publication number
- CN104236285A CN104236285A CN201410250658.8A CN201410250658A CN104236285A CN 104236285 A CN104236285 A CN 104236285A CN 201410250658 A CN201410250658 A CN 201410250658A CN 104236285 A CN104236285 A CN 104236285A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- burnt gas
- chimney
- fluidized bed
- raw material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a drying device and a drying method utilizing the drying device. The drying device (100) comprises a chimney (20) used for discharging burnt gases supplied from a flue (11) to a coke oven (10) into the atmosphere, a flow layer drying machine (30) which dries wet raw materials by means making contact between the wet raw materials and the burnt gases to obtain dry materials, and a flowing path (21) used for supplying the burnt gases to the flow layer drying machine (30). The flowing path (21) is connected to the lower portion of the chimney (20) and used for supplying the burnt gases in the chimney (20) to the flow layer drying machine (30).
Description
Technical field
The present invention relates to for dry wet raw material drying device and use the drying means of this drying device.
Background technology
As the device of the wet raw material such as coal containing moisture for drying, be known to a kind of fluidized bed drying machine, this fluidized bed drying machine contacts with the gas of high temperature by making wet raw material, thus carries out drying while wet raw material is flowed.Due to fluidized bed drying machine can be dry powdered in large quantities wet raw material, thus apply flexibly in various field.
Such as, when producing coke, to improve coke quality and to improve for the purpose of the productivity ratio in coke oven, fluidized bed drying machine is used to make the coal dust of the coke oven be encased in coke oven dry in advance.The moisture content of the coal dust of the coke oven before drying is generally 9 % by weight ~ 13 about % by weight.By utilizing fluidized bed drying machine to carry out drying to such coal dust, thus reduce the moisture content of coke oven coal.
As the drying gas used in such fluidized bed drying machine, be used in the burnt gas produced in coke oven.Such as, in patent document 1 (Japanese Patent No. 3825587 description), motion has and will produce in coke oven and the method that uses as the drying gas of fluidized bed drying machine of the burnt gas circulated in flue.Like this, can seek effectively to utilize the burnt gas produced in coke oven.
But also as described in patent document 1, which, in common chamber shaped coke oven, to be configured to brick across the thickness of about 100mm relative and alternately arrange for carbonization chamber and combustion chamber row.And the heat produced in a combustion chamber passes to the coal dust in carbonization chamber via brick.1 row of combustion chamber are divided into the cell of Room 26 to Room 34 usually.The bottom of each combustion chamber is configured with regenerator.Each cell with the coke oven of such structure is grouped into two groups in the running and (is set to below " the 1st grouping " and " the 2nd grouping ".)。
Carry out accumulation of heat and regenerator be in the condition of high temperature the 1st grouping in, fuel gas and air are preheated in this regenerator.About the fuel gas after preheating and air, the fuel in combustion chamber gas on regenerator top and air are joined and carry out burn (upwelling).Then, the waste gas after burning sinks (sinking) in the combustion chamber of the 2nd grouping.Waste gas in the regenerator of bottom being configured at this combustion chamber by recuperation of heat after discharge via flue.
The temperature of the regenerator of the 1st grouping reduces gradually by carrying out preheating to gas.On the other hand, by carrying out accumulation of heat to the heat of waste gas, temperature rises the temperature of regenerator of the 2nd grouping gradually.Through the set time, carry out the operation respectively the 1st grouping being switched to accumulation of heat side, the 2nd grouping being switched to combustion side.By carrying out this switching operation every the set time, thus alternately carry out warm-up operation and heat storage operation respectively in the 1st grouping and the 2nd grouping, thus improve heat storage efficiency.Like this, the operation making the state of combustion chamber alternately be switched to combustion side and sinking side is called " burning switches ".
When carrying out above-mentioned " burning switch " like this, the generation of the burnt gas in coke oven is temporarily interrupted.Therefore, in fluidized bed drying machine, when using burnt gas as drying gas, because the flow of drying gas reduces or stops when this " burning switches ", therefore, existing and being difficult to stably continue to carry out dry situation.In order to tackle such situation, in patent document 1, motion has a kind of method of carrying out recycling by making the gas of discharging from fluidized bed drying machine circulate as the supply gas of fluidized bed drying machine.
When producing coke in coke oven, in order to improve the stability of coke production, require the deviation of doing one's utmost the proterties suppressing the coal used as raw material.At this, utilize fluidized bed drying machine dry and moisture content that the is dry thing of acquisition changes because of the impact of the moisture content of wet raw material, the temperature of drying gas and moisture content etc.
Therefore, in the technology that patent document 1 is such, the situation of the treating capacity reduction making fluidized bed drying machine etc. may be needed to tackle when " burning switches " of coke oven.Thus, seek to guarantee a kind ofly stably to produce the dry thing and the technology that can suppress the variation of the water content of dry thing that reach target dryness.
Summary of the invention
the problem that invention will solve
Namely the present invention makes in view of the foregoing, the drying device that also can stably continue when the burning that its object is to be provided in coke oven switches fluidized bed drying machine is operated and drying means.
for the scheme of dealing with problems
A technical scheme of the present invention provides a kind of drying device, and this drying device comprises: chimney, and it is for being discharged in air by the burnt gas of the coke oven supplied from flue; Fluidized bed drying machine, it contacts dry wet raw material by making wet raw material with burnt gas, thus obtains dry thing; And stream, it is for being supplied to fluidized bed drying machine by burnt gas, and the bottom of stream and chimney links, for the burnt gas in chimney is supplied to fluidized bed drying machine.
According to the drying device of the invention described above, the burnt gas of the coke oven being supplied to chimney from flue can be supplied to fluidized bed drying machine constantly.That is, in " burning switches " period of coke oven, also the burnt gas be trapped in chimney can be supplied to fluidized bed drying machine.Thus, when the burning of coke oven switches, the treating capacity that can reduce for fluidized bed drying machine reduces significantly or prepares to have the reply of replacement gas etc. of lower water content.Thus, fluidized bed drying machine can stably continuous running.Can reduce fully and use such fluidized bed drying machine and the deviation of the water content of dry thing that obtains.Thus, drying device of the present invention also contributes to the steady running of the device in downstream and the Quality advance of product.
In drying device of the present invention, preferably, intermittently supply above-mentioned burnt gas from coke oven to chimney, the supply dwell time of the burnt gas from coke oven is being set to t (hour), evaporation of water heat is set to Q
1(MJ/ton-water), the heat of burnt gas is set to Q
2(MJ/Nm
3), the quantity delivered of wet raw material is set to M (ton/ hour), the moisture content of the moisture content of wet raw material and dry thing is set to m respectively
1(quality %) and m
2(quality %) and when the temperature of the burnt gas in chimney and stream is set to T, the aggregate value V (m of the internal volume of the upper end chimney by the top of the link mouth of the ratio stream in the internal volume of stream and chimney
3) meet formula 1.
V≥[M×(m
1-m
2)×(Q
1/Q
2)×t]×(273+T)/273 (1)
The aggregate value V of above-mentioned formula (1) is met, even if then in the treating capacity of " burning switches " period uncomfortable whole fluidized bed drying machine, also can suppress to drying device air supply if having.
Drying device of the present invention also can comprise: oxygen detection portion, and it is for detecting the oxygen of the inside of at least one in chimney and stream; Flow control division, it for regulating the quantity delivered of the burnt gas to the supply of fluidized bed drying machine in stream; And control part, its testing result according to oxygen detection portion controls flow control division.Thereby, it is possible to suppress fully to flow in stream and fluidized bed drying machine from the upper end leaked-in air of chimney.
Another technical scheme of the present invention provides a kind of drying means using drying device, and it is the drying means of the wet raw material using drying device, and this drying device comprises: chimney, and it is for being discharged in air by the burnt gas of the coke oven supplied from flue; Fluidized bed drying machine, it contacts dry wet raw material by making wet raw material with burnt gas, thus obtains dry thing; And stream, it is for being supplied to fluidized bed drying machine by burnt gas, this use drying device drying means there is following operation: from flue to the operation of burnt gas of chimney supply coke oven; And the burnt gas in chimney is supplied to fluidized bed drying machine to make the operation of wet raw material drying.
According to drying means of the present invention, the burnt gas being supplied to the coke oven of chimney can be supplied to fluidized bed drying machine constantly.Therefore, even if when " burning switches " of coke oven, also the burnt gas be trapped in chimney can be supplied to fluidized bed drying machine.Thus, when the burning of coke oven switches, the treating capacity that can reduce for fluidized bed drying machine reduces significantly or prepares to have the reply of replacement gas etc. of lower water content.Thus, stably the dry operating of wet raw material can be carried out by sustainable utilization fluidized bed drying machine.
In above-mentioned drying means, also in stopping during flue supplies burnt gas to chimney, the burnt gas in chimney can be supplied to fluidized bed drying machine.In addition, this drying means also can have following operation: according to the oxygen concentration in the inside of at least one in chimney and stream, controls the quantity delivered of the burnt gas to the supply of fluidized bed drying machine.By having such operation, can suppress fully to flow in stream and fluidized bed drying machine from the upper end leaked-in air of chimney, and security can be improved further.
According to the present invention, even if drying device and the drying means of the running of fluidized bed drying machine also stably can be continued when a kind of burning at coke oven can be provided to switch.
Accompanying drawing explanation
Fig. 1 is the figure of the schematic configuration of the embodiment representing drying device of the present invention.
Fig. 2 is the chimney of an embodiment and the sectional view of its periphery that schematically show drying device of the present invention.
Detailed description of the invention
The preferred embodiment of drying device of the present invention is explained referring to accompanying drawing.But the present invention is not limited to following embodiment.In addition, the Reference numeral identical to element annotation identical or equal in accompanying drawing, and according to circumstances the repetitive description thereof will be omitted.
Fig. 1 is the figure of the schematic configuration of the drying device 100 representing present embodiment.The chimney 20 that drying device 100 comprises coke oven 10, utilize flue 11 and coke oven 10 to link and the fluidized bed drying machine 30 utilizing pipe arrangement 21 and chimney 20 to link.
Such as, in coke oven 10, along with the production of coke, produce and contain as the carbon dioxide of main component and the burnt gas of nitrogen.Coke production amount in coke oven 10 is 1000 ton per days (loading carbon (wetting) 60 tons/h) left and right, the amount of the burnt gas produced in 1 coke oven battery of coke oven 10 is such as 60000m
3about/h.The burnt gas produced in coke oven 10 is directed to chimney 20 by flue 11.It is such as 150 DEG C ~ 300 DEG C by the temperature of burnt gas during flue 11.
Fig. 2 schematically shows the chimney included by drying device of present embodiment and the sectional view of its periphery.Than ground G position on the lower, be linked with flue 11 in the bottom of chimney 20.In addition, chimney 20 refers to the position of netted line.The generating capacity of the burnt gas in coke oven 10 is greater than the consumption of the burnt gas in fluidized bed drying machine 30, the burnt gas that have passed flue 11 is directed to chimney 20, and is moved upward in chimney 20 thus is diffused in air from the top of chimney 20.Be linked with pipe arrangement 21 at link mouth 24 place of the bottom being formed at chimney 20, this pipe arrangement 21 is supply as the stream of drying burning of gas waste gas to fluidized bed drying machine 30.Pipe arrangement 21 is configured to supply burnt gas from chimney 20 to fluidized bed drying machine 30.
The generating capacity of the burnt gas in coke oven 10 is less than the consumption of the burnt gas in fluidized bed drying machine 30, burnt gas circulates towards fluidized bed drying machine 30 along the arrow 60,62 of Fig. 1 from the top of the link mouth 24 of chimney 20.Like this, the link mouth 24 periphery place in flue 11 and the burnt gas be in than linking mouth 24 position are by the top directed to pipe arrangement 21.
The drying device 100 of present embodiment is by applying flexibly the burnt gas be detained in the chimney 20 of coke oven, even if when coke oven 10 burning switch time etc. from the burnt gas of coke oven 10 quantity delivered reduce or stop, also can supply burnt gas constantly to fluidized bed drying machine 30.Therefore, even if intermittently supply burnt gas from coke oven 10 to chimney 20, the steady running of fluidized bed drying machine 30 can also be continued.In addition, produce along with supplying burnt gas via pipe arrangement 21 to fluidized bed drying machine 30 from chimney 20 situation flowing into air from the top of chimney 20 to the inside of chimney 20.
The coupling position of chimney 20 and pipe arrangement 21, i.e. link mouth 24 are located at the bottom of chimney 20.That is, when the height of the bottom surface apart from chimney 20 is set to H, link mouth 24 and be located at than the bottom surface with chimney 20 at a distance of the height position on the lower of 1/2H.From the viewpoint of internal volume effectively utilizing chimney 20, preferably link mouth 24 be located at than with the height position on the lower of bottom surface at a distance of 1/3H.In the present embodiment, arrange link mouth 24 at the base portion place of chimney 20, at link mouth 24 place, the pipe arrangement 21 being certainly linked to chimney 20 supplies burnt gas to fluidized bed drying machine 30.Like this, by link mouth 24 being arranged on the lower position of chimney 20, thus burnt gas can be made to be trapped in the position of side more top than link mouth 24 fully.
In the present embodiment, link mouth 24 is located at the position of side more top than ground G, but in other implementations, also link mouth 24 can be located at than ground G position on the lower.In addition, other the flue different from flue 11 at the exhaust gas utilization from the stove (such as, rolling heating furnace, C.A.P.L-Continuous Annealing Processing Line) except coke oven 10 is supplied to chimney 20, the waste gas from this stove except coke oven 10 also effectively can utilize as drying gas.
In the present embodiment, during having burnt gas to chimney 20 supply, the wall of chimney 20 is made to become high temperature because of burnt gas.Thus, even if switch Airflow in burning to enter chimney 20, this air is also heated due to the wall of chimney 20, becomes the temperature higher than the air do not flow in chimney 20 (extraneous air).Thus, when the burning of coke oven 10 has switched, utilized the air-flow produced by the air of the high temperature in chimney 20 and burnt gas, the circulation from coke oven 10 to the burnt gas of chimney 20 is recovered swimmingly.
Preferably link mouth 24 to arrange in the mode that the central axis across chimney 20 is relative with the inflow entrance 23 of flue 11 when chimney 20 seen from above.Like this, by making link mouth 24 separate with inflow entrance 23, the pressure oscillation of coke oven 10 can be suppressed fully.
The internal volume of chimney 20 does not have particular determination, preferably has the internal volume that often can supply the degree of the burnt gas of fixed amount to fluidized bed drying machine 30.Such as, preferably by the sidewall of chimney 20, by the upper end of the link mouth 24 of chimney 20 and the horizontal plane A parallel with ground G and by the top of chimney 20 and the internal volume V that surrounds of the horizontal plane B parallel with ground G
1(m
3) and the internal volume V of pipe arrangement 21
2(m
3) aggregate value V (m
3) meet following formula (1).
V≥[M×(m
1-m
2)×(Q
1/Q
2)×t]×(273+T)/273 (1)
V＝V
1+V
2 (2)
In formula (1), t (hour) represents because the burning switching etc. of coke oven 10 causes time of stopping from the supply of the burnt gas of coke oven 10, Q
1(MJ/ton-water) represents evaporation of water heat, Q
2(MJ/Nm
3) representing the heat of burnt gas, M (ton/ hour) represents the quantity delivered of the wet raw material of fluidized bed drying machine 30, m
1(quality %) and m
2(quality %) represents the moisture content of wet raw material and dry thing respectively, and T represents the temperature of the burnt gas in chimney 20 and stream 21.
The service data using coal dust as the drying device 100 when wet raw material is represented in table 1.According to such 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 running, and the numerical value of projects is not limited to the value of table 1.In addition, V
n, V
trepresent the benchmark of aequum that calculate according to each service data, burnt gas.The right of above-mentioned formula (1) is equivalent to the V in table 1
t.If utilize the aggregate value V (m that above-mentioned formula (2) calculates
3) become V
tabove volume then meets formula (1).Aggregate value V (the m of this formula (1) is met if become
3), then can suppress the inflow to fluidized bed drying machine 30 of air.
As oxygen detection portion, the oxygen densitometer 22 for detecting oxygen concentration also can be set on chimney 20 or pipe arrangement 21.Thereby, it is possible to avoid the inside being fed into fluidized bed drying machine 30 from the top leaked-in air (oxygen) of chimney 20.As oxygen densitometer 22, the oxygen densitometer usually sold in the market can be used.In addition, from the viewpoint of security, the oxygen concentration of the inside of preferred chimney 20 and the inside of pipe arrangement 21 is at 13 below volume %.
Pipe arrangement 21 is provided with the flow control valve 26 of the quantity delivered for adjusting the burnt gas supplied to fluidized bed drying machine 30.The signal of the oxygen concentration utilizing oxygen densitometer 22 to measure is sent to control part 52.The control part 52 of the signal of oxygen concentration is received to flow control valve 26 transmitted traffic conditioning signal from oxygen densitometer 22.Flow control valve 26 regulates the flow of burnt gas according to the flow regulating signal received from control part 52.
Such as, control part 52 when flow into a large amount of air from the top of chimney 20 and be certainly located at specific discharge control valve 26 receive the signal of the oxygen concentration exceeding higher limit by the oxygen densitometer 22 of the position of upstream side, utilize flow control valve 26, reduce or stop the quantity delivered of the burnt gas supplied to fluidized bed drying machine 30.Like this, the oxygen concentration in the bottom of chimney 20 and pipe arrangement 21 can be suppressed to exceed higher limit and rise.In addition, the influx that oxygen flows into fluidized bed drying machine 30 can be reduced.
The control method of flow control valve 26 is not limited to above-mentioned method, such as, also can be configured to according to the generating capacity from the burnt gas of coke oven 10, utilize flow control valve 26 to regulate the flow of the burnt gas supplied to fluidized bed drying machine 30.
Forced ventilation 38 is provided with in the position of specific discharge control valve 26 downstream of pipe arrangement 21.Utilize forced ventilation 38, supply the drying gas of burnt gas as wet raw material to fluidized bed drying machine 30.Burnt gas circulates towards the gas discharge outlet 33 of the top wall portion being located at main part 36 from the gas supply port 32 of bottom of the main part 36 being located at fluidized bed drying machine 30.Have in the inside of fluidized bed drying machine 30 and make burnt gas be distributed to function in dry place, be provided with and can limit wet raw material and move downwards and the dispersion plate 34 that burnt gas can be made to circulate upward.
The supply unit 31 of the wet raw material for supplying coal etc. is connected with at main part 36.In addition, the discharge portion 37 for being discharged to the outside by dry thing main body 36 dried in the inside of main part 36 is connected with at main part 36.Supply unit 31 and discharge portion 37 are arranged across main part 36.The wet raw material utilizing supply unit 31 to be encased in the top of the dispersion plate 34 of main part 36 is floating by the upwelling produced because of the burnt gas imported from gas supply port 32.Like this, fluidized bed 35 is formed with by wet raw material with on the dispersion plate 34 of burnt gas in main part 36 that gas supply port 32 imports.
Being removed at least partially of moisture in fluidized bed 35 in wet raw material, obtains the pulverous dry thing with the moisture content of regulation from discharge portion 37.In order to by the Height Adjustment of fluidized bed 35 in the scope of regulation, preferably control the pressure reduction on the above-below direction of fluidized bed 35.Pressure reduction on the above-below direction of fluidized bed 35 such as can control by adjusting the amount of the dry thing that extract from discharge portion 37.Extracted amount from the dry thing of discharge portion 37 such as can utilize not shown rotary valve to adjust.
From the viewpoint of the heat resistance of the drying efficiency of wet raw material and equipment, at gas supply port 32 place, the temperature of burnt gas is such as 150 DEG C ~ 300 DEG C.If utilize the solid contents such as the powder of the wet raw material of drying device 100 drying of present embodiment containing moisture, be then not particularly limited, such as, can there are pulverous inorganic matter such as coal dust, metal powder or ceramic powder or pulverous organic dust etc.
The moisture content of wet raw material supplied from supply unit 31 is such as 5 quality % ~ 30 quality %, is preferably 9 quality % ~ 13 quality %.On the other hand, be such as below 10 quality % from the moisture content of the pulverous dry thing (xeraphium) of discharge portion 37 discharge, be preferably 5 quality % ~ 11 quality %.In addition, in this manual, the measurement of the water content of wet raw material and the water content of dry thing can use the measurement mechanism of non-contact type microwave type to measure.The moisture content of dry thing by the quantity delivered of the wet raw material to main part 36 supply and can adjust from the quantity delivered of the burnt gas of gas supply port 32 and the temperature etc. of burnt gas.When dry thing is coal dust, as the coal dust of coke oven, coke oven 10 can be encased in.
Containing the moisture come from wet raw material and the Exhaust Gas that have passed fluidized bed 35 by the free space portion in main part 36, and to be discharged to the outside by gas discharge section 40 from gas discharge outlet 33.Gas discharge section 40 links with the gas discharge outlet 33 of main part 36, and this gas discharge section 40 has pipe arrangement 42 for linking each equipment forming gas discharge section 40 and the dust arrester 43 utilizing pipe arrangement 42 to link and induced draught fan 44.The induced draught fan 44 that the Exhaust Gas of discharging from gas discharge outlet 33 is linked to the downstream of dust arrester 43 is induced and after circulation, is discharged in air from chimney 45 in pipe arrangement 42.Chimney 45 is the chimney different from the chimney 20 of burnt gas.As dust arrester 43, the bag collector etc. for removing the dust such as the xeraphium that contains in Exhaust Gas can be used.
The example using drying device 100 pairs of wet raw materials to carry out dry drying means is described.In this drying means, use above-mentioned drying device 100, this above-mentioned drying device 100 comprises: chimney 20, and it is for being discharged in air by the burnt gas of the coke oven supplied from flue 11 10; Fluidized bed drying machine 30, it is dry by wet raw material by making wet raw material contact with burnt gas, thus obtains dry thing; And pipe arrangement 21, it is for being supplied to fluidized bed drying machine 30 by burnt gas.This drying means has following operation: the operation intermittently supplying the burnt gas of coke oven 10 from flue 11 to chimney 20; And the burnt gas in chimney 20 is supplied to fluidized bed drying machine 30 continuously to make the operation of wet raw material drying.
Above-mentioned each operation can be carried out according to the explanation to above-mentioned drying device 100.In addition, can also based on the operation of carrying out the explanation of drying device 100 except these operations.Such as, the operation of the quantity delivered controlling the burnt gas supplied to fluidized bed drying machine 30 according to the oxygen concentration utilizing oxygen densitometer 22 to detect can also be had.
Owing to using drying device 100 in above-mentioned drying means, therefore, even if reduce to the supply of the burnt gas of chimney 20 from coke oven 10 or stop, also burnt gas can be supplied to fluidized bed drying machine 30 constantly.Thus, the burnt gas supplied to fluidized bed drying machine 30 can not be made to interrupt, and can the drying of stably constant moisture raw material.The dry thing using such drying device 100 to obtain can reduce the deviation of moisture content fully, therefore, it is possible to reduce the variation of the device in downstream, improves quality.
Above, describe preferred embodiment of the present invention, but the present invention is not limited to above-mentioned embodiment.Such as, waste gas can also be supplied from the equipment except coke oven 10 to chimney 20.In addition, oxygen densitometer 22 can not be located at pipe arrangement 21, and near the such as link mouth 24 being located at chimney 20, or be located at both pipe arrangement 21 and chimney 20.When utilizing the oxygen densitometer being located at both pipe arrangement 21 and chimney 20 oxygen concentration different from each other to be detected, such as, can according to the flow of the oxygen concentration adjustment burnt gas of higher one.In addition, the heater or cooler that are used for the temperature adjusting the burnt gas supplied to fluidized bed drying machine 30 can also be located at pipe arrangement 21.
Claims (7)
1. a drying device, wherein,
This drying device comprises:
Chimney, it is for being discharged in air by the burnt gas of the coke oven supplied from flue;
Fluidized bed drying machine, it contacts dry above-mentioned wet raw material by making wet raw material with above-mentioned burnt gas, thus obtains dry thing; And
Stream, it is for being supplied to above-mentioned fluidized bed drying machine by above-mentioned burnt gas,
The bottom of above-mentioned stream and above-mentioned chimney links, for the above-mentioned burnt gas in above-mentioned chimney is supplied to above-mentioned fluidized bed drying machine.
2. drying device according to claim 1, wherein,
Above-mentioned burnt gas is intermittently supplied to above-mentioned chimney from above-mentioned coke oven,
The supply dwell time of the above-mentioned burnt gas from above-mentioned coke oven is being set to t, evaporation of water heat is being set to Q
1, the heat of above-mentioned burnt gas is set to Q
2, the quantity delivered of above-mentioned wet raw material is set to M, the moisture content of the moisture content of above-mentioned wet raw material and above-mentioned dry thing is set to m respectively
1and m
2, and when the temperature of the above-mentioned burnt gas in above-mentioned chimney and above-mentioned stream is set to T,
The aggregate value V of the internal volume of the upper end part by the top of the link mouth of the internal volume of above-mentioned stream and the above-mentioned stream of ratio of above-mentioned chimney meets formula 1,
V>=[M × (m
1-m
2) × (Q
1/ Q
2) × t] × (273+T)/273 formula 1
Wherein, the unit of t is hour, Q
1unit be MJ/ton-water, Q
2unit be MJ/Nm
3, the unit of M is ton/ hour, m
1, m
2unit be the unit of quality %, V be m
3.
3. drying device according to claim 1 and 2, wherein,
This drying device comprises:
Oxygen detection portion, it is for detecting the oxygen of the inside of at least one in above-mentioned chimney and above-mentioned stream;
Flow control division, it for regulating the quantity delivered of the above-mentioned burnt gas to above-mentioned fluidized bed drying machine supply in above-mentioned stream; And
Control part, it is for controlling above-mentioned flow control division according to the testing result in above-mentioned oxygen detection portion.
4. a drying means, it uses drying device to carry out dry drying means to wet raw material, wherein,
This drying device comprises:
Chimney, it is for being discharged in air by the burnt gas of the coke oven supplied from flue;
Fluidized bed drying machine, it contacts dry above-mentioned wet raw material by making wet raw material with above-mentioned burnt gas, thus obtains dry thing; And
Stream, it is for being supplied to above-mentioned fluidized bed drying machine by above-mentioned burnt gas,
This drying means has following operation:
Supply the operation of the burnt gas of above-mentioned coke oven to above-mentioned chimney from above-mentioned flue; And
Burnt gas in above-mentioned chimney is supplied to above-mentioned fluidized bed drying machine to make the operation of above-mentioned wet raw material drying.
5. drying means according to claim 4, wherein,
In the above-mentioned operation of the above-mentioned burnt gas of supply, the supply of above-mentioned burnt gas is intermittent supply,
The supply dwell time of the above-mentioned burnt gas from above-mentioned coke oven is being set to t, evaporation of water heat is being set to Q
1, the heat of above-mentioned burnt gas is set to Q
2, the quantity delivered of above-mentioned wet raw material is set to M, the moisture content of above-mentioned wet raw material moisture content and above-mentioned dry thing is set to m respectively
1and m
2, and when the temperature of the above-mentioned burnt gas in above-mentioned chimney and above-mentioned stream is set to T,
The aggregate value V of the internal volume of the upper end part by the top of the link mouth of the internal volume of above-mentioned stream and the above-mentioned stream of ratio of above-mentioned chimney meets formula 1,
V>=[M × (m
1-m
2) × (Q
1/ Q
2) × t] × (273+T)/273 formula 1
Wherein, the unit of t is hour, Q
1unit be MJ/ton-water, Q
2unit be MJ/Nm
3, the unit of M is ton/ hour, m
1, m
2unit be the unit of quality %, V be m
3.
6. the drying means according to claim 4 or 5, wherein,
In stopping during above-mentioned flue supplies above-mentioned burnt gas to above-mentioned chimney, the above-mentioned burnt gas in above-mentioned chimney is supplied to above-mentioned fluidized bed drying machine.
7. the drying means according to claim 4 or 5, wherein,
This drying means has following operation:
According to the oxygen concentration in the inside of at least one in above-mentioned chimney and above-mentioned stream, control the quantity delivered of the above-mentioned burnt gas to above-mentioned fluidized bed drying machine supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013124700A JP5410633B1 (en) | 2013-06-13 | 2013-06-13 | Drying apparatus and drying method using the drying apparatus |
| JP2013-124700 | 2013-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104236285A true CN104236285A (en) | 2014-12-24 |
| CN104236285B CN104236285B (en) | 2018-04-27 |
Family
ID=50202686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410250658.8A Active CN104236285B (en) | 2013-06-13 | 2014-06-06 | Drying device and the drying means using the drying device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5410633B1 (en) |
| CN (1) | CN104236285B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202562223U (en) * | 2012-05-14 | 2012-11-28 | 鄂尔多斯市中誉能源股份有限公司 | Drying device capable of preventing coal moisture regain |
| 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 |
| CN103123205A (en) * | 2013-03-07 | 2013-05-29 | 浙江大学 | Fluidization moving series arrangement steam drying system and technology |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2013
- 2013-06-13 JP JP2013124700A patent/JP5410633B1/en not_active Expired - Fee Related
-
2014
- 2014-06-06 CN CN201410250658.8A patent/CN104236285B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202562223U (en) * | 2012-05-14 | 2012-11-28 | 鄂尔多斯市中誉能源股份有限公司 | Drying device capable of preventing coal moisture regain |
| 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 |
| 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 |
|---|---|
| JP2015000882A (en) | 2015-01-05 |
| CN104236285B (en) | 2018-04-27 |
| JP5410633B1 (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1120872C (en) | Method and apparatus for drying coal | |
| CN102452802B (en) | Treating equipment for waste containing sludge | |
| CN102530923B (en) | High-temperature electric calcining system and method of carbon raw material | |
| CN103183460B (en) | Sludge treatment device | |
| US4541572A (en) | Pulverizing, drying and transporting system for injecting a pulverized fuel into a blast furnace | |
| CN203007146U (en) | Beam type heat accumulation lime kiln | |
| CN101139093A (en) | Method and device of fluidized carbonization moving bed activating of chemical legal wood activated charcoal | |
| CN102410706A (en) | Fluidized bed drying method of ilmenite powder | |
| WO2006109629A1 (en) | Wet raw material drier and method of drying | |
| CN101799240A (en) | Method for using waste heat flue gas from rotary hearth furnace | |
| CN202304253U (en) | An ilmenite powder fluidized bed drying system | |
| CN202193735U (en) | Sludge contained waste material treatment equipment | |
| KR102405860B1 (en) | Sludge treatment method and cement manufacturing system | |
| CN208613051U (en) | A kind of steel slag micro mist using steel plant's waste heat flue gas selects powder system | |
| CN104236285A (en) | A drying device and a drying method utilizing the drying device | |
| CN102563666A (en) | Sludge incineration method and sludge incineration facility | |
| CN214371676U (en) | Automatic kiln equipment for producing kaolin | |
| CN102351442B (en) | Method for material calcination and limekiln device | |
| CN205619759U (en) | Positive anode material of lithium ion battery is adjustable gas kiln of atmosphere for sintering | |
| CN104315823B (en) | Semi coke dewatering device and method | |
| CN113483554A (en) | Drying device and drying method for lump ore for blast furnace concentrate | |
| CN103301921B (en) | Energy-saving and emission-reducing device and method for industrial vertical mill | |
| CN203807396U (en) | Low-temperature pulverized coal retorting furnace | |
| CN203068947U (en) | Cupola furnace waste heat rock wool plate curing furnace | |
| CN202465467U (en) | Sludge treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |