CN104215036A - Flowing layer drying machine and method for drying wet raw material - Google Patents
Flowing layer drying machine and method for drying wet raw material Download PDFInfo
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- CN104215036A CN104215036A CN201310210243.3A CN201310210243A CN104215036A CN 104215036 A CN104215036 A CN 104215036A CN 201310210243 A CN201310210243 A CN 201310210243A CN 104215036 A CN104215036 A CN 104215036A
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Abstract
The invention provides a flowing layer drying machine and a method for drying a wet raw material. The flowing layer drying machine (100) comprises a body part (10), and the body part (10) is provided with a space (13) used for enabling the wet raw material to make contact with gas for drying. The flowing layer drying machine (100) enables the gas for drying to circulate from a gas supply opening (16) formed in the lower portion of the body part (10) to a gas exhaust opening (17) formed in the upper portion of the body part (10), so that the wet raw material is dried. The side face portion and the top of the body part (10) are respectively provided with a covering body (30), the covering bodies (30) surround the body part (10), and accordingly a flow path (32) used for allowing the gas for drying to circulate is formed between the covering bodies (30) and the body part (10). The body part (10) can be heated by the way that the drying gas branched from the upstream side of the gas supply opening (16) circulates in the flow path (32).
Description
Technical field
The present invention relates to the drying means of fluidized bed drying machine and wet raw material.
Background technology
As carrying out dry device to the wet raw material containing moisture, be known to by making the wet raw material containing moisture contact with the gas of high temperature, wet raw material to be flowed and carry out dry fluidized bed drying machine.Due to fluidized bed drying machine can be dry powdered in large quantities wet raw material, therefore apply to various field.
Such as, when producing coke, for the purpose of the productivity ratio of the quality and raising coke oven that improve coke, fluidized bed drying machine is used to carry out drying to the coal dust being about to the coke oven loading coke oven 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, the moisture content that drying reduces coke oven coal is carried out to such coal dust.
But, in fluidized bed drying machine, owing to being carry out dry device to wet raw material, therefore in the waste gas of fluidized bed drying machine, contain a large amount of moisture.In addition, due to this waste gas wet raw material heated and moisture evaporated and obtains, therefore compared with the drying gas being supplied to fluidized bed drying machine, temperature decline.Therefore, following situation may be had: the inwall of moisture contained in waste gas at the upper space (free space portion) of fluidized bed drying machine, the upstream device place condensation of fluidized bed drying machine, the corrosion composition in wet raw material contained in moisture causes corrosion.
As the technology of the phenomenon for avoiding moisture condensation contained in such a waste gas, proposition has following method: when making part drying gas to free space portion shunting and the drying gas after shunting being blown into free space portion, between free space portion and the inwall of dry classification room, arrange impingement plate, this impingement plate forms the mobile space (patent document 1: Japanese Unexamined Patent Publication 2008-264657 publication) for making shunt gas movement.In this patent document 1, proposition has by making shunt gas collide the method be incubated whole inwall in impingement plate.
But, as described in patent document 1, which, if arrange impingement plate in free space portion, then there is the hidden danger causing in space that wet raw material is attached between impingement plate and inwall blocking.If wet raw material blocks, then possibly operation cannot be continued.Therefore, once wet raw material is attached to the inside of drying machine or blocks, then in order to remove this wet raw material, needing the inside of taking drying machine apart to clean, therefore causing the running efficiency of drying machine to decline.
In addition, because impingement plate is subject to physical impact under corrosive environment, therefore this impingement plate needs to be made up of the material of corrosion resistance and resistance to abrasion excellence, and particularly in large-scale equipment, equipment cost can increase.Therefore, seek to suppress when not making equipment cost increase moisture at the internal condensation of fluidized bed drying machine thus reduce the technology of the corrosion of the inwall of fluidized bed drying machine.
Summary of the invention
The present invention makes in view of the foregoing, its object is to provide a kind of and moisture can be suppressed at the internal condensation of fluidized bed drying machine thus reduce inwall along with the fluidized bed drying machine be corroded that condenses.In addition, its object is also that providing a kind of can suppress moisture at the internal condensation of fluidized bed drying machine thus reduce the drying means of inwall along with the wet raw material be corroded that condenses.
The invention provides a kind of fluidized bed drying machine, it comprises the main part with the space making wet raw material contact with drying gas, this fluidized bed drying machine carries out drying towards the gas discharge outlet circulation on the top being located at main part to wet raw material from the gas supply port of the bottom being located at main part by making drying gas, wherein, on the side surface part and top of main part, there is nappe, this nappe forms the stream for dry gas circulation between this nappe and main part around main part, by making to circulate this stream from the drying gas of the upstream side branch of gas supply port, main part is heated.
In fluidized bed drying machine of the present invention, by reason, by being used in, the circulation and can heating main part in the stream utilizing nappe to be formed on the side surface part of main part and top of dry drying gas is carried out to wet raw material.Because the drying gas circulated in the stream utilizing nappe to be formed in the mode of the main part that detours does not contact with wet raw material at main part, therefore there is higher temperature, can heat the inside of main part fully from the side surface part of main part and top.Therefore, it is possible to the moisture originally contained in suppression wet raw material is in the inside of main part and gas discharge section condensation.
Thereby, it is possible to the corrosion to the main part of fluidized bed drying machine and the inwall of gas discharge section suppressing fully to produce along with condensation.In addition, owing to using drying gas as the thermal source circulated in the stream formed by nappe, therefore compared with using the situation of other thermals source, the complicated of equipment can be avoided.And then, due to make drying gas successively at the stream formed by nappe compared with situation about circulating in main part, can be easy to control drying regime, be easy to the basis of the flow controlling drying gas is reduced the flow of the drying gas circulated in the stream formed by nappe, therefore, it is possible to realize the miniaturization of fluidized bed drying machine.
Preferably, the nappe top and side surface part of main part being formed stream has angle bar structure or channels configuration.Because such nappe also has the function of outer wall strengthening main part, and the shaped steel that can application market be sold, therefore compare with the situation at whole top with the whole side surface part in main body covered portion, equipment cost can be reduced fully.
Preferably, in fluidized bed drying machine of the present invention, in the downstream of gas discharge outlet, there is gas discharge section, this gas discharge section makes the drying gas circulated in the stream formed by nappe and the exhaust gas merger of discharging from the gas discharge outlet of main part, and discharges containing drying gas and waste gas at interior gas.According to such gas discharge section, the higher and moisture of temperature compared with the waste gas of the gas discharge outlet carrying out main body can be discharged containing proportional lower gas.Thus, can suppress fully to produce condensation at gas discharge section and its upstream device place, the corrosion of the inwall of gas discharge section can be suppressed fully.
In the present invention, a kind of drying means of wet raw material is also provided, it uses fluidized bed drying machine, this fluidized bed drying machine has makes wet raw material flow while carry out dry main part, towards the gas discharge outlet circulation on the top being located at main part, drying is carried out to wet raw material from the gas supply port of the bottom being located at main part by making drying gas, wherein, the drying means of this wet raw material has following operation: to main part supply wet raw material and drying gas, the waste gas obtained containing dry thing and moisture by removing moisture at least partially contained in wet raw material, and by making to circulate in the stream utilizing nappe to be formed at the side surface part of main part and top from the drying gas of the upstream side branch of gas supply port in the mode of the main part that detours, thus to the operation that main part heats.
In the drying means of wet raw material of the present invention, by reason, dry drying gas is carried out to wet raw material circulate by being used in the stream formed by the top in main body covered portion and the nappe of side surface part and main part is heated.Because the drying gas circulated in nappe in the mode of the main part that detours does not contact with wet raw material at main part place, therefore there is higher temperature, can heat the inside of main part fully from the side surface part of main part and top.Therefore, it is possible to the moisture originally contained in suppression wet raw material is at internal condensation.
Thereby, it is possible to suppress fully to produce along with condensation to the main part of fluidized bed drying machine and the corrosion of gas discharge section.In addition, owing to using drying gas as the thermal source circulated in nappe, therefore compared with using the situation of other thermals source, the complicated of equipment can be avoided.And then, as compared to the situation making drying gas circulate in nappe with main part successively, can be easy to control drying regime, be easy to the basis of the flow controlling drying gas is reduced the flow of the drying gas circulated in the stream formed by nappe, therefore, it is possible to realize the miniaturization of fluidized bed drying machine.
Preferably, the drying means of wet raw material of the present invention has following operation: make the drying gas circulated in nappe and the exhaust gas merger of discharging from the gas discharge outlet of main part, discharge the gas comprising drying gas and waste gas.Thus, in gas discharge section, circulation has temperature compared with the waste gas of the gas discharge outlet carrying out main body higher and the gas that moisture concentration is lower.Thus, can suppress fully to produce condensation in gas discharge section and upstream device thereof, the corrosion of the inwall of gas discharge section can be suppressed fully.
According to the present invention, moisture can be suppressed at the internal condensation of fluidized bed drying machine, the corrosion of the inwall of fluidized bed drying machine can be reduced.In addition, a kind of drying means that can be reduced the wet raw material of the corrosion of the inwall of fluidized bed drying machine by suppression moisture at the internal condensation of fluidized bed drying machine can be provided.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment representing fluidized bed drying machine of the present invention.
Fig. 2 is the sectional view of the II-II line along Fig. 1.
Fig. 3 is the sectional view of the III-III line along Fig. 1.
Fig. 4 is the side view of the embodiment representing fluidized bed drying machine of the present invention.
Fig. 5 is the sectional view along the V-V line of Fig. 1 in other embodiments of fluidized bed drying machine of the present invention.
Fig. 6 is the sectional view along the VI-VI line of Fig. 1 in other embodiments of fluidized bed drying machine of the present invention.
Detailed description of the invention
Below, drying device of the present invention is explained preferred embodiment with reference to accompanying drawing.But the present invention is not limited to following embodiment.In addition, in the accompanying drawings, mark identical Reference numeral to identical or equivalent element, according to circumstances the repetitive description thereof will be omitted.
Fig. 1 is the skeleton diagram of the fluidized bed drying machine 100 of present embodiment.Fluidized bed drying machine 100 comprises main part 10(drying machine main body 10), this main part 10 has the space 13 that the wet raw material containing moisture is contacted with drying gas.Drying gas circulates from the gas supply port 16 of the bottom being located at main part 10 towards the gas discharge outlet 17 at the top being located at main part 10.Be provided with dispersion plate 14 in the inside of main part 10, this dispersion plate 14 has the function that drying gas is disperseed in dry place, and has the hole that multiple drying gas can circulate.
Main part 10 is linked with and loads groove 11A and drain tank 18, this loading groove 11A is used for inside wet raw material being supplied to main part 10, across space 13 between this drain tank 18 and loading groove 11A, for dry thing dried in the inside of main part 10 is externally discharged from main part 10.Loading groove 11A is linked with shear 11B, and wet raw material is supplied to from shear 11B and loads groove 11A.Drain tank 18 is linked to main part 10 sentencing than loading groove 11A the mode making the bottom surface of drain tank 18 be connected with dispersion plate 14 on the lower.Thus, the structure of easily discharging dried dry thing from the space 13 of main part 10 is formed.Be loaded into the effect low suspension of the ascending air that wet raw material that groove 11A is encased in the top of the dispersion plate 14 of main part 10 produces at the drying gas imported from gas supply port 16.Like this, fluidized bed 15 is formed on the dispersion plate 14 of drying gas in main part 10 utilizing wet raw material and import from gas supply port 16.
By removing the moisture at least partially in wet raw material in this fluidized bed 15, the pulverous dry thing with predetermined moisture content can be obtained from drain tank 18.In order to by the Height Adjustment of fluidized bed 15 in predetermined scope, preferably control fluidized bed 15 above-below direction on pressure differential.The amount of the dry thing that the pressure differential on the above-below direction of fluidized bed 15 can be extracted from drain tank 18 by adjustment controls.Extracted amount from the dry thing of drain tank 18 can be adjusted by the not shown rotary valve being such as located at the downstream of drain tank 18.
Main part 10 is provided with the nappe 30 covering its side surface part and top both sides.Nappe 30 is set to the whole top of the side surface part in main body covered portion 10 and whole top.In the side surface part of main part 10, be formed between top and nappe for the stream 32 for dry gas circulation.That is, nappe 30 forms the stream 32 for dry gas circulation by the side surface part in main body covered portion 10 and top.Can heat the inside of main part 10 by making drying gas circulate in stream 32.Because nappe 30 forms stream 32 by the side surface part in main body covered portion 10 and even the top of main part 10, therefore, it is possible to suppress Yin Wendu decline and overlooked the inwall at the top of the main part 10 be easily corroded fully.
Fluidized bed drying machine 100 comprises: main part 10; And gas supply part 20, it is for being supplied to the stream 32 formed by the side surface part of main part 10, top and nappe 30 by drying gas.Gas supply part 20 has: flue 24, and it is for being transported to gas supply port 16 by drying gas; And isocon 25, it is from flue 24 branch, for drying gas is supplied to stream 32.The flow control valve 22 of the flow for adjusting drying gas is provided with at flue 24, be provided with the flow control valve 27 of the flow for adjusting drying gas at isocon 25, flue 24, isocon 25 are formed as the structure that can adjust the flow of drying gas respectively with operating condition accordingly.Also the not shown feeding blower fan of supply drying gas can be configured at the upstream side of flue 24.
Isocon 25 in the downstream of the flow control valve 27 of isocon 25, namely branch into branched pipe 25a, 25b between flow control valve 17 and gas supply port 16.The top ends of branched pipe 25a, 25b is linked to nappe 30, is formed as the structure that drying gas can be supplied to multiple positions of stream 32.The part drying gas circulated in flue 24 utilizes isocon 25, branched pipe 25a, 25b are supplied to stream 32.The flow being assigned to the drying gas in branched pipe 25a and branched pipe 25b also can by arranging flow control valve or throttle orifice adjusts in the stream of respective pipe arrangement.
As drying gas, as long as dry gas can be carried out to wet raw material, just can use various gas without special restriction, such as, the non-active gas after burnt gas, heating and air etc. can be used.The temperature of preferred drying gas is higher than atmospheric temperature.From the view point of drying efficiency and the heat resistance loading groove 11A of wet raw material, the temperature of drying gas is such as 50 DEG C ~ 350 DEG C in the moment supplied to space 13 from gas supply port 16, is preferably 150 DEG C ~ 250 DEG C.As burnt gas, such as can use as produced by coke oven, burnt gas containing carbon dioxide.
To be supplied to drying gas in main part 10 from gas supply port 16 for benchmark, the ratio being supplied to the drying gas of stream 32 via isocon 25, branched pipe 25a, 25b is such as 10 volume % ~ 30 volume %.By changing the ratio being supplied to the drying gas of nappe 30, the temperature of main part 10 and gas discharge section 40 can be adjusted.
Such as, as long as the solid contents such as the powder of wet raw material dried in the present embodiment containing moisture, then without particular determination, can list pulverous inorganic matter such as coal dust, metal powder or ceramic powder or pulverous organic dust etc.In above-mentioned powder, from the view point of the function of drying device applying present embodiment fully, preferred coal dust etc. are easy to the powder assembled.
The moisture content of wet raw material is such as 5 quality % ~ 30 quality %, is preferably 9 quality % ~ 15 quality %.On the other hand, be such as below 10 quality % from the moisture content of the pulverous dry thing (xeraphium) of drain tank 18 discharge, be preferably 3 quality % ~ 10 quality %.In addition, in this manual, the measurement mechanism of non-contacting microwave type can be used to measure the moisture content of wet raw material and dry thing.The moisture content of dry thing can by the quantity delivered supplied to main part 10 of wet raw material, adjust from the quantity delivered of the drying gas of gas supply port 16 and the temperature etc. of drying gas.Like this, the coal dust as coke oven such as dried coal dust can be loaded in coke oven.
Containing the gas from the fluidized bed 15 of the moisture of wet raw material by forming the free space portion on the top in the space 13 of main part 10, externally discharge from gas discharge outlet 17 via gas discharge section 40.Gas discharge section 40 has the exhaust piping 42 of the gas discharge outlet 17 being linked to main part 10.Such as be linked to the not shown Induced fan induction in the downstream of exhaust piping 42 from the waste gas of gas discharge outlet 17 discharge and circulate in exhaust piping 42, discharging in air.In addition, preferably by dust arresters such as the bag hoses arranged at exhaust piping 42 for removing in waste gas the dust such as contained xeraphium to carry out the dedusting of waste gas.
In stream 32, the drying gas of circulation contacts while heat main part 10 with the side surface part of main part 10 and top on one side successively, and circulates to gas discharge section 40.Stream 32 utilizes nappe 30 to be connected to connecting pipe 44 on the top of main part 10.The top of connecting pipe 44 is connected to exhaust piping 42.Thus, the drying gas after main part 10 is heated after flowing through the connecting pipe 44 being linked to nappe 30, the linking part between connecting pipe 44 and exhaust piping 42 and the exhaust gas merger of to discharge from gas discharge outlet 17.
Circulation in stream 32 and connecting pipe 44 at the drying gas of exhaust piping 42 place and exhaust gas merger not by carrying out the space 13 of the main part 10 of drying to wet raw material, but the space 13 of the main part 10 that detours and exhaust gas merger.Therefore, compared with the waste gas from gas discharge outlet 17, temperature is higher and moisture amount is lower.In nappe 30, the drying gas of circulation heats the side surface part of main part 10 and top, and can by with the exhaust gas merger from gas discharge outlet 17 and make the gas temperature in gas discharge section 40 be in more than dew point.Thereby, it is possible to suppress to produce condensation in gas discharge section 40.
In the fluidized bed drying machine 100 of present embodiment, to make in stream 32 the drying gas of circulation than gas discharge outlet 17 downstream place and exhaust gas merger.Therefore, with the situation making drying gas at main part 10 and exhaust gas merger, be connected in series stream 32 with main part 10 and utilize drying gas to compare the situation that main part 10 heats, can the flow velocity of waste gas near mitigation of gases outlet 17.Therefore, it is possible to reduce the amount of the dry thing carried secretly in the offgas fully.Thus, the obstruction of the bag hose being such as located at exhaust piping 42 can also be suppressed.
Fig. 2 is the sectional view of the II-II line along Fig. 1.The nappe 30 being formed stream 32 by the side surface part of the main part 10 of covering fluidized bed drying machine 100 has angle bar structure.The angle bar structure of such nappe 30 can use shaped steel to be formed.The general name of that shaped steel is the preshaped cross sectional shape predetermined for L font etc., longer on material axis direction steel.Angle bar structure can use in above-mentioned shaped steel, formed perpendicular to the angle steel that market for L font, the cross section of length direction is sold.
The structure of nappe 30 is not limited to angle bar structure, also can be such as to use channels configuration in shaped steel, that formed perpendicular to the cross section of the length direction slim steel that is U-shaped.Like this, because the nappe 30 with angle bar structure or channels configuration also has the function of the outer wall strengthening main part 10, and the shaped steel that can application market be sold, therefore compared with the situation of the whole side surface part in main body covered portion 10, can reduce equipment cost fully.
Fig. 3 is the sectional view of the III-III line along Fig. 1.As shown in Figure 3, nappe 30 is set to the whole top in main body covered portion 10.In addition, nappe 30 covers a part of periphery of exhaust piping 42.Like this, due to nappe 30, be formed as can the structure that heats of the waste gas higher to moisture amount, therefore, it is possible to suppress moisture to condense at the top of main part 10 and exhaust piping 42 fully.
Fig. 4 is the side view of fluidized bed drying machine 100.As shown in Figure 4, nappe 30 have on the side of main part 10 multiple shaped steel extend along the vertical direction and obtain angle bar structure 30b.Thereby, it is possible to strengthen main part 10 and heat the side surface part of main part 10 fully.The each shaped steel forming angle iron structure 30b utilizes coupling member 30a, 30c of a pair band shape to link at the upper and lower side of each shaped steel.Drying from branched pipe 25a, 25b passes through coupling member 30c, the angle bar structure 30b of downside and the coupling member 30a of upside successively with gas, discharges from connecting pipe 44 to exhaust piping 42.
Fig. 5 is the schematic sectional view of other embodiments representing fluidized bed drying machine of the present invention.Fig. 5 represents the cross section of the V-V line of the fluidized bed drying machine 200 along Fig. 1.Fluidized bed drying machine 200, except the shape this point different from the structure of nappe 30 of stream 32, has the structure identical with fluidized bed drying machine 100.The nappe 30 of the side surface part and top that cover fluidized bed drying machine 200 has the whole top of the side surface part covering fluidized bed drying machine 200 and the chuck structure at whole top.That is, nappe 30 is arranged in the mode of the side surface part of surrounding main part 10, forms stream 32.Fig. 6 represents the cross section of the VI-VI line of the fluidized bed drying machine 200 along Fig. 1.As shown in Figure 6, identical with fluidized bed drying machine 100, the whole top in the main body covered portion of nappe 30 10 and form stream 32.In addition, nappe 30 covers a part of periphery of exhaust piping 42.
Due to as shown in Figure 5, Figure 6, the chuck that the top that nappe 30 has not only main body covered portion 10 also covers on the upside of whole side surface part constructs, therefore, it is possible to suppress to come the heat radiation of the side surface part of main body 10, can heat the inside of main part 10 fully and be incubated.
Then, below use the fluidized bed drying machine 100,200 of the respective embodiments described above that embodiment wet raw material being carried out to dry drying means is described.The drying means of the wet raw material of present embodiment has: the 1st operation, wherein, wet raw material and drying gas are supplied to the space 13 of main part 10, remove the moisture at least partially contained by wet raw material, obtain dry thing from drain tank 18 and obtain the waste gas containing moisture from gas discharge outlet 17; 2nd operation, wherein, make drying gas from the upstream side branch of gas supply port 16 and utilizing circulation the stream 32 formed with the nappe 30 at the side surface part in the main body covered portion 10 of the mode in the space 13 of the main part 10 that detours and top, thus main part 10 is heated; And the 3rd operation, wherein, make the drying gas of circulation in stream 32 and the exhaust gas merger of discharging from gas discharge outlet 17, discharge and contain drying gas and waste gas at interior gas.
In the 1st operation, in the inside of main part 10, the drying gas imported from gas supply port 16 is utilized to form the fluidized bed 15 of wet raw material.In such fluidized bed 15, remove the moisture at least partially of wet raw material by making wet raw material fully contact with drying gas.Moisture after removal forms waste gas together with drying gas, is discharged from gas discharge outlet 17 by free space portion to gas discharge section 40.On the other hand, moisture at least partially contained by wet raw material is removed and the dry thing that obtains is discharged by from drain tank 18.
In the 2nd operation, circulated in stream 32 by the gas that the drying gas made with circulate in main part 10 is identical and the side surface part of main part 10 and top heated.Owing to the drying gas of circulation in main part 10 and the drying gas that circulate in stream 32 to be set to the gas of one species, therefore compared with the situation of the different types of gas of use, can simplified apparatus significantly.Such effect is needing to carry out a large amount of wet raw materials being particularly useful in dry field.
In the 3rd operation, make the drying gas of circulation in stream 32 and the exhaust gas merger of discharging from gas discharge outlet 17.Like this, by making drying gas and exhaust gas merger, the temperature of the gas of circulation in gas discharge section 40 can be improved, and the moisture that can reduce in gas is containing proportional.Thereby, it is possible to suppress moisture to condense at the inwall of gas discharge section 40.Adopt such drying means, moisture can be suppressed fully to condense in main part 10, gas discharge section 40, the corrosion to inwall that can the attachment of corrosion composition be suppressed fully to cause.
Above, describe the preferred embodiment of the present invention, but the present invention is not limited to above-mentioned embodiment.Such as, have main part in the above-described embodiment, this main part cross section had perpendicular to vertical is the trunk part of rectangle, but the shape of main part is not limited to above-mentioned shape.In addition, heater or the cooler of the temperature for adjusting drying gas also can be set in the stream of drying gas.
utilizability in industry
According to the present invention, moisture can be suppressed at the internal condensation of fluidized bed drying machine, the corrosion of the inwall of fluidized bed drying machine can be reduced.In addition, can provide a kind of moisture can be suppressed at the internal condensation of fluidized bed drying machine thus the drying means of the wet raw material of the corrosion of the inwall of fluidized bed drying machine can be reduced.
description of reference numerals
10, main part; 11A, loading groove; 11B, shear; 13, space; 14, dispersion plate; 15, fluidized bed; 16, gas supply port; 17, gas discharge outlet; 18, drain tank; 20, gas supply part; 22,27, flow control valve; 24, flue; 25, isocon; 25a, 25b, branched pipe; 30, nappe; 30a, 30c, coupling member; 30b, angle iron structure; 32, stream; 40, gas discharge section; 42, exhaust piping; 44, connecting pipe; 100,200, fluidized bed drying machine.
Claims (5)
1. a fluidized bed drying machine, it comprises the main part had for the space making wet raw material contact with drying gas, this fluidized bed drying machine carries out drying towards the gas discharge outlet circulation on the top being located at aforementioned body portion to above-mentioned wet raw material from the gas supply port of the bottom being located at aforementioned body portion by making above-mentioned drying gas, wherein
On the side surface part and top in aforementioned body portion, have nappe, this nappe forms around aforementioned body portion the stream circulated for above-mentioned drying gas between this nappe and aforementioned body portion,
By making to circulate above-mentioned stream from the above-mentioned drying gas of the upstream side branch of above-mentioned gas supply port, aforementioned body portion is heated.
2. fluidized bed drying machine according to claim 1, wherein,
The above-mentioned nappe forming above-mentioned stream has the angle bar structure or channels configuration that are formed by shaped steel.
3. fluidized bed drying machine according to claim 1 and 2, wherein,
Have gas discharge section in the downstream of above-mentioned gas outlet, this gas discharge section makes the above-mentioned drying gas that circulates in the above-mentioned stream formed by above-mentioned nappe and the exhaust gas merger of discharging from the above-mentioned gas outlet in aforementioned body portion and discharges containing above-mentioned drying gas and above-mentioned waste gas at interior gas.
4. the drying means of a wet raw material, wherein use fluidized bed drying machine, this fluidized bed drying machine comprises main part, this main part has the space for making wet raw material contact with drying gas, this fluidized bed drying machine carries out drying towards the gas discharge outlet circulation on the top being located at aforementioned body portion to above-mentioned wet raw material from the gas supply port of the bottom being located at aforementioned body portion by making drying gas
The drying means of this wet raw material has following operation:
Above-mentioned wet raw material and above-mentioned drying gas is supplied, the waste gas obtained containing dry thing and above-mentioned moisture by removing moisture at least partially contained in above-mentioned wet raw material to above-mentioned main part; And
By making to circulate the stream formed by the covering side surface part in aforementioned body portion and the nappe at top from the above-mentioned drying gas of the upstream side branch of above-mentioned gas supply port in the mode in aforementioned body portion of detouring, thus aforementioned body portion is heated.
5. the drying means of wet raw material according to claim 4, wherein,
The drying means of this wet raw material has following operation: make the above-mentioned drying gas that circulates in the above-mentioned stream formed by above-mentioned nappe and the exhaust gas merger of discharging from the above-mentioned gas outlet in aforementioned body portion, discharges and contains above-mentioned drying gas and above-mentioned waste gas at interior gas.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107308533A (en) * | 2016-04-26 | 2017-11-03 | 碧果制药株式会社 | Oxygen concentrating device |
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| AU2012232314A1 (en) * | 2011-03-22 | 2013-10-10 | Mitsubishi Heavy Industries, Ltd. | Fluidized bed drying device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107308533A (en) * | 2016-04-26 | 2017-11-03 | 碧果制药株式会社 | Oxygen concentrating device |
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