CN102345974A - Drying and grading machine for processed object and drying and grading method - Google Patents
Drying and grading machine for processed object and drying and grading method Download PDFInfo
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- CN102345974A CN102345974A CN2011102053118A CN201110205311A CN102345974A CN 102345974 A CN102345974 A CN 102345974A CN 2011102053118 A CN2011102053118 A CN 2011102053118A CN 201110205311 A CN201110205311 A CN 201110205311A CN 102345974 A CN102345974 A CN 102345974A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/30—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors
- F26B17/32—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containers; with movement performed by rotary floors the movement being in a horizontal or slightly inclined plane
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention provides an efficient drying and grading machine for a processed object and a drying and grading method. The drying and grading machine comprises a rotary cylinder capable of freely rotating around the axis thereof. One end of the rotary cylinder is equipped with a feeding port for an object to be processed and a carrier gas and the other end of the rotary cylinder is equipped with a discharge port for the object to be processed and the carrier gas; a heating unit for heating and drying an object to be processed in the rotary cylinder during the delivery process of the object from the feeding port to the discharge port; a grading cover arranged to cover the other end side of the rotary cylinder. The lower part of the grading cover is equipped with a fixed discharge outlet for discharging the processed object and the upper part of the grading cover is equipped with a fixed gas outlet for discharging the gas carrier; and a dispersed gas blowing unit arranged inside the grading cover wherein the processed object is sent to the fixed discharge outlet.
Description
Technical field
The present invention relates to object being treated is carried out the dry classification machine and the dry classification method of dry classification.Particularly at coal during as object being treated, effect of the present invention can show significantly.
Background technology
In the manufacturing of coke,, therefore use the low coal of caking property to make widely because the shortage of high-quality bonded carbon (strong bonded carbon and weak bonded carbon) and price thereof is surging.Although you can use a low adhesion to the coal drying to use, but in the water becomes 6.5% or less, about 100um will play the following coal dust particles (dust Development), resulting in deterioration in the operating environment and other issues.And, with the coal particulate below about 300um when coke oven is supplied with, can cause carbon attached to the problem in the coke oven.Therefore, in order to address these problems,, utilize grading plant with particulate classification from coal/remove before the drying or after the drying.
On the other hand, all the time, in the drying of coal, use horizontal rotary drier or fluid bed dryer, but that horizontal rotary drier and fluid bed dryer are compared power consumption is few, favourable at the equipment cost this respect.
As the typical example of in the past horizontal rotary drier, known so-called steam-tube drier (STD).In using the drying that steam-tube drier carried out, be purpose to improve drying efficiency etc., one situation is to be blown into carrier gas (for example, with reference to patent documentation 1).As shown in Figure 7, this steam-tube drier has the rotating cylinder 110 that rotates around the axle center freely, makes this rotating cylinder 110 rotations, thus will by from the thing that is dried of a distolateral supply (packing into) of this rotating cylinder 110 to another distolateral conveyance and discharge.In this conveyance process, utilize as drying and make the thing drying that is dried with outer hot heating steam.
Further particularly; Rotating cylinder 110 has the for example length of 10～30m; Between the two end plates of these rotating cylinder 110 inside, a plurality of heating tubes 111 extend along axis direction, and these a plurality of heating tubes 111 are heated through warmed-up steam is supplied to inside as thermal medium.After the things that are dried such as moistening powder or nodular powder were fed into the inside of rotating cylinder 110, it was heated drying through contacting with heating tube 111, and moved successively to outlet 112 sides along with the rotation of rotating cylinder 110.
In addition, rotating cylinder 110 one distolateral be provided with carrier gas be blown into mouthfuls 113, this carrier gas with discharge the earthing setting that links to each other with another distolateral outlet 112 of this gas exhaust port 122 concomitantly from gas exhaust port 122 in the rotating cylinder 110 inner vapor phases that produce.
, because this horizontal rotary drier in the past do not possess grading function, therefore carry out at dry coal and then to particulate need grading plant together being set in addition with this drying machine under the situation of classification/remove, equipment cost increases.And, owing to these devices only consider that respectively drying or classification design, therefore when using these devices to carry out drying and classification, just carry out drying and classification successively, operability reduces.
Patent documentation 1: TOHKEMY 2004-44876 communique
Summary of the invention
The major subjects that the present invention will solve is to provide a kind of dry classification machine and the dry classification method that can carry out dry and classification efficiently to object being treated.
The present invention who has solved this problem is following.
Technical scheme 1 described invention
A kind of object being treated dry classification machine; It is characterized in that; These object being treated dry classification facility are equipped with: rotate rotating cylinder freely around the axle center, at a distolateral supply port with object being treated and carrier gas of this rotating cylinder, at another distolateral outlet with object being treated and carrier gas of this rotating cylinder; Heating unit is being supplied with object being treated and from the process that said outlet is discharged, this heating unit is through inner heating comes object being treated is carried out heat drying to said rotating cylinder from said supply port; The classification cover, it is distolateral that it is arranged to cover another of said rotating cylinder, has the fixedly outlet that is used to discharge object being treated in the bottom of this classification cover, has the fixedly exhaust outlet that is used to discharge carrier gas on the top of this classification cover; And the unit that blows afloat that disperses gas, it is arranged at the path that the interior object being treated of said classification cover arrives said fixedly outlet.
(significant feature effect)
With carrier gas after object being treated is discharged from the outlet of object being treated; For the larger-diameter particle of ratio in the object being treated that accompanies with carrier gas; Owing to making its rising, gravity can reach capacity in advance; Therefore; It begins to descend at the moment, and discharges to the outside from the fixedly outlet of classification cover bottom surface with the object being treated that does not have to accompany with carrier gas.On the other hand, for accompany with carrier gas, the particle of smaller diameter in the object being treated, its state that keeps accompanying with carrier gas is discharged to the outside from the fixedly exhaust outlet on classification cover top.Thereby with particle (particulate) classification from object being treated of smaller diameter/remove.
In addition, blowing afloat when disperseing gas, particulate that has descended along with the object being treated that does not accompany with carrier gas or the particulate that can insufficiently descend because of rising are disperseed gas to blow afloat, so effectiveness of classification improves.And; When on the object being treated in the classification cover arrives the path of fixing outlet, blowing afloat dispersion gas; To particulate to blow afloat effect very reliable; And; The object being treated that does not blow afloat is directly discharged to the outside from the fixedly outlet of classification cover bottom surface; Therefore, need not to consider that the object being treated that will not blow afloat is to fixedly outlet guiding.
Technical scheme 2 described inventions
For technical scheme 1 described object being treated dry classification machine, the unit that blows afloat of said dispersion gas is made up of the tubing that will disperse gas to blow afloat from the hole that is formed on its perisporium,
Said tubing is configured to, and it crosses the path that object being treated arrives said fixedly outlet.
(significant feature effect)
When the unit that blows afloat that disperses gas is when crossing object being treated and arriving the tubing in the fixing path of outlet, for example, can not hinder the discharge of the object being treated that does not blow afloat through with proper spacing installation tubing.And, when the hole from the perisporium that is formed at tubing will disperse gas to blow afloat, can realize the effect that blows afloat reliably to particulate.
Technical scheme 3 described inventions
For technical scheme 1 described object being treated dry classification machine, the position above the height of the said rotating cylinder of ratio of said classification cover leans on is formed with the settling zone that disperses object being treated.
(significant feature effect)
When being provided with the classification cover, can be in this settling zone reliably above-mentioned particulate being carried out classification/remove, thereby effectiveness of classification is improved with the mode that above rotating cylinder, forms the settling zone.
Technical scheme 4 described inventions
A kind of dry classification method of object being treated is characterized in that, in the dry classification machine of technical scheme 1, coal is used as object being treated.
(significant feature effect)
With carrier gas with coal under the situation of another distolateral discharge of rotating cylinder; In the hierarchical spatial after this is discharged; For accompany with carrier gas, in the coal than larger-diameter particle; Owing to making its rising, gravity can reach capacity in advance; Therefore; It begins to descend at the moment, and is guided downwards in hierarchical spatial with the coal that does not have to accompany with carrier gas.On the other hand, for accompany with carrier gas, the particle of smaller diameter in the coal, its state that keeps accompanying with carrier gas in hierarchical spatial by to above guiding.Therefore, can be with particle (particulate) classification from dried coal of smaller diameter/remove.
Technical scheme 5 described inventions
A kind of dry classification method of object being treated is characterized in that, the flow-rate ratio of the said dispersion gas in the dry classification machine of technical scheme 1 is few from the flow of the carrier gas that an end of said rotating cylinder is blown into.
(significant feature effect)
The flow of the carrier gas that blows at an end that makes the flow-rate ratio of disperseing gas from rotating cylinder can not exert an influence to the circulation of the carrier gas in the rotating cylinder after a little while, and the result is also can the drying of object being treated not to be exerted an influence.
(invention effect)
According to the present invention, can carry out drying and classification to object being treated efficiently.
Description of drawings
Fig. 1 is the front view of the horizontal rotary drier of a mode of the present invention.
Fig. 2 is another distolateral enlarged drawing of rotating cylinder, and is the figure that has omitted the classification cover.
Fig. 3 is the cutaway view along the X-X line of Fig. 1.
Fig. 4 is the enlarged drawing of classification cover.
Fig. 5 is the enlarged drawing that blows afloat the unit that disperses gas.
Fig. 6 (a) and Fig. 6 (b) are the key diagrams that blows afloat the unit that disperses gas.
Fig. 7 is the stereogram of steam-tube drier in the past.
Fig. 8 is the flow chart of the dry classification operation of the 1st mode.
The flow chart of the dry classification operation of Fig. 9 the 2nd mode.
Label declaration
10: rotating cylinder; 11: steam pipe (heating unit); 41: supply port; 50: outlet; 55: the classification cover; 56: fixing exhaust outlet; 57: fixing outlet; 58: blow afloat the unit; 61: on hold together plate; 65: agitating unit; A: carrier gas; E: handled thing; N: disperse gas; N1: air; N2: inert gas; W: object being treated.
The specific embodiment
Below, embodiment of the present invention is described.
Fig. 1 shows the horizontal rotary drier that in dry classification, uses in this mode.This horizontal rotary drier has rotating cylinder 10 cylindraceous, is arranged to respect to the horizontal plane tilt a little in the axle center of this rotating cylinder 10, and an end of rotating cylinder 10 is positioned at the position higher than the other end.Below rotating cylinder 10,2 support units 20 are provided with the mode that supports rotating cylinder 10 with motor unit 30, and rotating cylinder 10 rotates freely by means of the axle center of motor unit 30 around self.As shown in Figure 3, this rotating cylinder 10 is around a direction, is around (direction of arrow R) rotation counterclockwise in illustrated example, for rotating speed, and the not enough 1m/s of peripheral speed for example.
In the inside of rotating cylinder 10, many steam pipes 11 extend ground along the axis direction of rotating cylinder 10 to be installed, and said many steam pipes 11 are metal pipe, and its inside can be circulated as the steam of heat medium etc.Many these steam pipes 11 are with for example concentric with the axle center of the rotating cylinder 10 circumferential and arranged radially in mode edge.
As shown in Figure 2, on another distolateral perisporium of rotating cylinder 10, be formed through a plurality of outlets 50.A plurality of outlets 50 are along circumferential formation 2 row of rotating cylinder 10, and formation with being separated from each other.In addition, though a plurality of outlet 50 whole shapes are identical, also can make its shape different.
As shown in Figure 3, be provided with many of stretching out to the axle center of rotating cylinder 10 from the inwall of rotating cylinder 10 in the inside of rotating cylinder 10 and hold together plate (scratching upper plate) 61.As shown in Figure 1, holding together plate 61 on these many is set to multiple row in the axial direction discretely, is 3 row in illustrated example.As shown in Figure 3, hold together on each panel 60 by many that equally spaced separate each other, be to hold together plate 61 on 4 to constitute in illustrated example.
Hold together plate 61 on each and form, and form terminal part hook-shaped to the front side bending of the direction of rotation R of rotating cylinder 10 by the metal of wall thickness.On hold together plate 61 extension elongation be set to rotating cylinder 10 for example inner diameter D 1/10～3/10.
In addition, hold together plate 61 on each and be configured in the following manner: the front side end of the outlet 50 of the rear side position of the direction of rotation R through being positioned at rotating cylinder 10, and near the straight line parallel with the axis direction of rotating cylinder 10, stretch out.Therefore, in front of the last front side that holds together plate 61, there is not outlet 50, but has the inwall of rotating cylinder 10.
As shown in Figure 1, on hold together panel 60 rotating cylinder 10 internal configurations in outlet 50 and after between the supply port 41 stated, hold together panel 60 and lean on another distolateral position not exist at rotating cylinder 10 inner ratio outlets 50.In addition, hold together panel 60 on and be configured in the part of leaning on outlet 50 between outlet 50 and the supply port 41.
As shown in Figure 1, on the ratio of rotating cylinder 10 inside, hold together panel 60 and lean on a distolateral position of rotating cylinder 10 to be provided with agitating unit 65, this agitating unit 65 is used for stirring to rotating cylinder 10 inner object being treated W supplying with (packing into).This agitating unit 65 also be disposed at inner the holding together panel 60 on distolateral and separate of rotating cylinder 10 near one.As this agitating unit 65, can use for example known screw (stud type) agitating unit or anchor formula (contrary pen feather) agitating unit etc.Wherein particularly, because the cause of the structural limitations of the effect of separation of particles (dispersion) and STD is preferably selected anchor formula mixer means.
Like Fig. 1 and shown in Figure 4, another the distolateral mode that on rotating cylinder 10, has a plurality of outlets 50 with covering is provided with the classification cover 55 that can discharge object being treated W and carrier gas A.This classification cover 55 is formed by the metal of wall thickness, and as shown in Figure 3, the bottom surface of bottom 55d have be dried with classification after object being treated W, be the fixedly outlet 57 of handled thing E, the end face of 55u has the fixedly exhaust outlet 56 of carrier gas A on top.In addition, the top 55u of classification cover 55 with the width of axial quadrature on along with towards fixing exhaust outlet 56 and narrowed width, likewise, the bottom 55d of classification cover 55 also on width along with towards fixing outlet 57 and narrowed width.Overlook when observing, fixedly exhaust outlet 56 and fixedly outlet 57 be positioned at the substantial middle portion of classification cover 55.
The inside of classification cover 55 becomes the hierarchical spatial that is full of air, and particularly classification cover 55 inside of rotating cylinder 10 tops (scope shown in the label L) become settling zone 90.That is, classification cover 55 is arranged in rotating cylinder 10 tops and is formed with settling zone 90.In addition, classification cover 55 fixes on the ground through not shown member, does not together rotate with the rotation of rotating cylinder 10.
Like Fig. 8 and shown in Figure 9, fixedly exhaust outlet 56 is open upwards at upper and lower, and is connected with dust suction unit 201.Carrier gas A is inconjunction with steam from fixedly exhaust outlet 56 discharges, and particulate C is from fixedly exhaust outlet 56 discharges simultaneously.In addition, fixedly outlet 57 also is open upwards at upper and lower, and is connected with conveyance unit 204 such as conveyer belts.Classification/remove particulate C, and discharge handled thing E from fixing outlet 57.
For the upper limb of rotating cylinder 10 and the fixing separating distance L between the exhaust outlet 56; Be preferably separating distance L and satisfy L＞0.3D with respect to the inner diameter D of rotating cylinder 10; Be more preferably separating distance L and satisfy 0.8D＜L＜4D, be preferably separating distance L especially and satisfy 1.0D＜L＜2.5D with respect to the inner diameter D of rotating cylinder 10 with respect to the inner diameter D of rotating cylinder 10.If separating distance L is below the 0.3D, then can't give full play to grading function, larger-diameter particle F also together is discharged from through fixing exhaust outlet 56 with carrier gas A, possibly cause that effectiveness of classification reduces, the load of dust suction unit 201 increases.On the other hand, if separating distance L is more than the 4.0D, then can be uneconomical because of the space that surpasses the necessary separating distance of classification is set.
In addition, as shown in Figure 4,90 places enlarge classification cover 55 vertically in the settling zone.90 places enlarge vertically if classification cover 55 is in the settling zone, and then particulate C reduces with the probability that other particle F etc. or classification cover 55 (particularly wall material 55A, the 55B at the axial two ends of classification cover 55) collide mutually, so effectiveness of classification improves.In addition, what is called enlarges vertically, and the coupling part that is meant than is connected with rotating cylinder 10 enlarges.
Settling zone 90 need not to spread all over enlarging vertically endlong of above-below direction.Near rotating cylinder 10, therefore particulate C etc. can also can not enlarge as illustrated example at once along planar diffusion after rotating cylinder 10 discharges through outlet 50 vertically.In addition, for the top 55u of classification cover 55, as illustrated example, be preferably in the axial direction along with towards fixing exhaust outlet 56 and narrowed width.
At the axial length of establishing the coupling part that is connected with rotating cylinder 10 is that the axial length of Z1, enlargement steps down is under the situation of Z2, for the enlarged degree of classification cover 55, preferably makes 1.5Z1＜Z2＜6Z1, is more preferably and makes 2Z1＜Z2＜4Z1.
In settling zone 90, like Fig. 3 and shown in Figure 4, at the axial side's of classification cover 55 wall material 55A and axially be provided with many support members (62,63) between the opposing party's the wall material 55B.Though exist because of classification cover 55 enlarge vertically make that intensity reduces maybe, through between an axial side's wall material 55A and axial the opposing party's wall material 55B, being provided with many support members (62,63), can keep the intensity of classification cover 55.In addition, as illustrated example, the part that does not enlarge vertically of classification cover 55, support member (62,63) also can be set between side's wall material 55A and the opposing party's wall material 55B.
For the support member of the intensity that is used to keep classification cover 55, also can be only constitute, but in this mode by the bar of linearity and tubing etc., be to constitute by tubing 62 and the umbrella material 63 that is disposed on this tubing 62.Umbrella material 63 forms the outstanding umbrella in mediad top of width, and extends the ground configuration along the bearing of trend of tubing 62.Through the existence of umbrella material 63, prevent that object being treated W is deposited on the tubing 62.Umbrella material 63 self can have the function of the intensity that is used to keep classification cover 55, also can not have this function.
As aforementioned, the top 55u of classification cover 55 on width along with towards fixing exhaust outlet 56 and narrowed width but, in this case, as shown in Figure 3, preferably makes support member (62,63) not be positioned at the fixedly below of exhaust outlet 56.When the top of classification cover 55 55u on the width along with during narrowed width, as shown in Figure 3, produce, and particulate C being attached to this air-flow S1 along the air-flow S1 of the wall material of this narrowed width towards fixing exhaust outlet 56.Therefore, the particulate C of rising can not collide with the end face of classification cover 55 and descend mutually, and effectiveness of classification improves.In addition, in the inside of classification cover 55, producing in the air-flow S1 of above-mentioned wall material, mainly be created in the air-flow S2 that central vertical ground rises, particulate C also is attached to this air-flow S2.Therefore, if many support members (62,63) are not positioned at the fixedly below of exhaust outlet 56, the particulate C that then is attached to the air-flow S2 that rises on central vertical ground can not collide with support member (62,63) and descend mutually, and effectiveness of classification further improves.
As shown in Figure 3, in the inside of classification cover 55, on the path that arrives fixing outlet 57 from the outlet 50 of rotating cylinder 10 through free-falling etc. of object being treated W, be rotating cylinder 10 below, be provided with and disperse that gas N's blow afloat unit 58.Blow afloat in the inside of classification cover 55 (hierarchical spatial) like this when disperseing gas N; Particulate C that has descended along with the object being treated W that does not accompany with carrier gas A or the particulate C that can descend inadequately because of rising can be disperseed gas N blow afloat, so effectiveness of classification improves.In addition; When fixedly blowing afloat on the path of outlet 57 in the arrival of object being treated W when disperseing gas N; Reliable for effect to blowing afloat of following particulate C: the state so that the object being treated W that is not had to accompany with carrier gas A encases is discharged the also particulate C of free-falling in rotating cylinder 10; And; The object being treated W that does not blow afloat directly discharges to the outside from the fixedly outlet 57 of classification cover 55 bottom surfaces as handled thing E; Therefore, need not to consider that the object being treated W that will not blow afloat is to fixedly outlet 57 guiding.
As above-mentioned; In this embodiment, not only utilize settling zone 90, also utilize the whole zone of hierarchical spatial (classification cover 55 inside); Respectively the particulate C among the object being treated W is guided to the top with carrier gas A, the object being treated W that removes particulate C is guided downwards.
Not special qualification of the concrete mode that blows afloat unit 58 of disperseing gas N also can constitute through the unit that the dispersion plate that for example is made up of net material etc. and the mesh through this net material will disperse gas N to blow afloat.In addition; Fixedly do not have to be provided with on the path of outlet 57 in the arrival of object being treated W and blow afloat under the situation of unit 58; Though can consider in such scheme, to make dispersion plate towards fixedly outlet 57 inclinations; Even but dispersion plate is tilted; The object being treated W that does not blow afloat also can be deposited on the dispersion plate; Therefore, need to consider separately object being treated W is guided to fixing outlet 57.
On the other hand; In this embodiment; Gas N's blow afloat unit 58 as disperseing; Like Fig. 5 and shown in Figure 6 constituting: have tubing 58A; This tubing 58A crosses object being treated W and arrives the path of fixing outlet 57 and on perisporium, form porose 58Ac, blows afloat dispersion gas N from the hole 58Ac that is formed at this tubing 58A.Make like this and disperse the unit 58 that blows afloat of gas N to arrive fixedly by crossing object being treated W that the tubing 58A in the path of outlet 57 constitutes, need not then to consider that the object being treated W that will not blow afloat guides to fixing outlet 57.In addition, when the hole 58Ac from the perisporium that is formed at tubing 58A will disperse gas N to blow afloat, can realize the effect that blows afloat reliably to particulate C.
In this mode, the hole 58Ac that is formed at the perisporium of tubing 58A is circle, and is formed with a plurality of with on the bearing of trend of tubing 58A, separating suitable interval.In addition, shown in Fig. 6 (a), hole 58Ac is so that disperse gas N to form to the mode that oblique upper blows afloat.
As illustrated example, preferably many tubing 58A fixedly are being arranged in parallel near the outlet 57 vertically.In this mode; Make and disperse gas N to blow to desire from the object being treated W that descends between the tubing 58A adjacent one another are; Thereby make particulate C disperseed gas N to blow afloat; On the other hand; The object being treated W that does not blow afloat directly descends between tubing 58A, and is discharged to the outside from fixing outlet 57 as handled thing E.In addition, disperseed particulate C that gas N blows afloat after fly upward classification cover 55 inside, and then fly upward among the carrier gas A and discharge to the outside from fixing exhaust outlet 56.
Also the tubing group that multilayer is made up of many tubing 58A can be set discretely on above-below direction.In addition, also can change the amount of the dispersion gas N that blows afloat from each hole 58Ac according to the amount of the object being treated W that descends.Have again, also can be as this mode, configuration umbrella material 58B on each tubing 58A.This umbrella material 58B forms the outstanding umbrella in mediad top of width, and extends along the bearing of trend of tubing 58A.Through the existence of umbrella material 58, prevent that more reliably object being treated W is deposited on the tubing 58A.
As disperseing gas N, for example outside the deacration, can also use inert gases such as nitrogen or argon gas etc., as long as select according to the characteristic of object being treated W.But, be the situation that coal etc. has the object being treated of ignition quality at object being treated W, or be under the situation of the object being treated that causes that dust explosion is such at object being treated W, preferably use inert gas.
In this embodiment, as shown in Figure 8, in inert gas N2 entrained air N1 such as nitrogen, in heat exchanger 205, utilize thermophore S such as steam that this entrained gas is heated the back as dispersion gas N.
Though inert gas N2 does not limit with respect to the ratio of sneaking into of air N1 is special; But at object being treated W is the situation that coal etc. has the object being treated of ignition quality; Or be under the situation of the object being treated that causes that dust explosion is such at object being treated W so that from the fixing oxygen concentration of the gas of exhaust outlet 56 discharges be below 13%, the mode that is preferably below 12% sneaks into inert gas N2.Like this oxygen concentration being suppressed lowlyer is that particulate C for fear of coal etc. blasts.In addition, because carrier gas A contains the vaporized steam along with the drying of object being treated W, so the oxygen concentration reduction, the possibility that particulate C blasts is low.That is, this blast is to disperse the gas N significant problem that becomes because of being blown into.
, if increase the ratio of sneaking into of inert gas N2, then cost raises; Relative therewith; Disperse gas N just with carrier gas A etc. from after fixedly exhaust outlet 56 is discharged, utilize the dust suction unit 201 that is connected with conveyance unit 202 such as conveyer belt to remove particulate C, then just from chimney 203 discharges.
Therefore, as shown in Figure 9, preferably the gas that will discharge from fixing exhaust outlet 56 is utilizing dust suction unit 201 to utilize as dispersion gas N after removing particulate C again.For the carrier gas A that discharges from the inside (hierarchical spatial) of classification cover 55 (comprise and disperse gas N), its oxygen concentration is lower, and has been heated, and therefore, can will remove particulate C carrier gas A afterwards as disperseing gas N to utilize well.Certainly, also can utilize 205 pairs of these carrier gas of heat exchanger A suitably to heat.
For the carrier gas A that has discharged from fixing exhaust outlet 56, though also can be with it all as disperseing gas N utilize, also can only utilization be a part of as illustrated example, and remainder is expelled to the atmosphere from chimney 203., preferably make the flow of the carrier gas A that the flow-rate ratio of disperseing gas N blows into from an end of rotating cylinder 10 few, be more preferably and make the flow that disperses gas N be 1/5～1/2 of the flow of this carrier gas A.Like this, the flow of the carrier gas A that blows at an end that makes the flow-rate ratio of disperseing gas N from rotating cylinder 10 can not exert an influence to the circulation of the carrier gas A in the rotating cylinder 10 after a little while, and the result is also can the drying of object being treated W not to be exerted an influence.
At this; At object being treated W is under the situation of object being treated with ignition quality such as coal; Or object being treated W for the situation of object being treated that can cause dust explosion under, expectation is (preferably below 12%) below 13% from the fixing oxygen concentration of the gas of exhaust outlet 56 discharges.Therefore, though not shown, utilize oxymeter that the oxygen concentration of the gas of discharging from fixing exhaust outlet 56 is measured (supervisions), surpass under the situation of setting at this measured value, preferably inert gas is sneaked among the dispersion gas N so that this measured value less than predetermined value.
On the other hand, as shown in Figure 1, at another distolateral supply pipe 70 and bleeder pipe 71 that is used in steam pipe 11, supplying with steam that be provided with of rotating cylinder 10.In addition, distolaterally be provided with feeding screw 42, have screw rod (Screw) in the inside of this feeding screw 42, and this feeding screw 42 form cylindric with the mode that is embedded in rotating cylinder 10 at one of rotating cylinder 10.End at this feeding screw 42 is provided with the driver elements such as motor 43 that are used to make the screw rods rotation of being located at feeding screw 42 inside.And supply port 41 is in the opened upper end of feeding screw 42, and the inside of feeding screw 42 is communicated with this supply port 41.
The inside of feeding screw 42 will be desired to be supplied to from supply port 41 by the dry object being treated W of the horizontal rotary drier of this embodiment; And utilize driver element 43 to make to be arranged at these feeding screw 42 inner screw rods to rotate; Thus, object being treated W is supplied to the inside of rotating cylinder 10.In addition; Near feeding screw 42, be provided with not shown gas and be blown into the unit; Said gas is blown into the unit air, inert gas etc. is blown into the inside of rotating cylinder 10 as carrier gas A from the supply port 41 that also is blown into mouthful as gas, by this gas be blown into carrier gas A that the unit has been blown into towards another of rotating cylinder 10 distolaterally at the internal circulation of rotating cylinder 10.
Below, the action of horizontal rotary drier is described.
When utilizing this horizontal rotary drier that object being treated W is carried out drying, as shown in Figure 1, object being treated W is supplied to supply port 41.The object being treated W that will be supplied to from supply port 41 supplies to the inside of rotating cylinder 10 through feeding screw 42, with by Steam Heating steam pipe 11 contact and be dried, and to the other end side shifting (drying process) of rotating cylinder 10.
Arrive the position at agitating unit 65 places at object being treated W after, be stirred unit 65 and stir, such as shown in Figure 3 then, rotated along with the rotation of rotating cylinder 10 to hold together on the plate 61.By on the object being treated W that held together hold together to fall naturally when plate 61 is positioned at the upside of rotating cylinder 10 last, at this moment, the particulate C that object being treated W is comprised disperses (so-called flying upward (flight) action) in rotating cylinder.
On the other hand, be set at one of rotating cylinder 10 and distolateral be blown into carrier gas A that the unit has been blown into from supply port 41 through in the rotating cylinder 10, and be discharged to outside the rotating cylinder 10 from also outlet 50 as the outlet of object being treated W.At this moment, carrier gas A follow by on hold together the particulate C that plate 61 is scattered in the rotating cylinder 10 and discharge from outlet 50.Carrier gas A that has discharged from outlet 50 and particulate C discharge from the inside (hierarchical spatial) of classification cover 55 via fixing exhaust outlet 56 together.And, supply with dispersion gas N to blow afloat the mode of disperseing gas N towards the top of classification cover 55 through the unit 58 that is blown into that disperses gas N.Usually the flow that is somebody's turn to do the flow-rate ratio carrier gas A that disperses gas N is little.In addition, when outlet 50 was discharged, the flow velocity of carrier gas A was for example 5～10m/s at carrier gas A.According to the area of outlet 50 and the amount of being blown into of carrier gas A this flow velocity is carried out suitable adjustment.
Big and particle Heavy Weight of particle diameter among the object being treated W falls in rotating cylinder 10, does not follow carrier gas A, but falls naturally from the outlet 50 that is positioned at downside.This particle (object being treated W) that has fallen is not naturally further disperseed gas N not blow afloat yet, but through between the tubing 58A and be discharged to the outside as handled thing E from fixing outlet 57.In addition; Though the bigger particle F of the diameter among the object being treated W is along with carrier gas A discharges from outlet 50; But because its Heavy Weight; Do not arrive fixedly exhaust outlet 56 with carrier gas A; But fall downwards, and with the big object being treated W of particle diameter together everywhere as handled thing E from fixedly outlet 57 discharges.
Below, the action effect of horizontal rotary drier is described.
As the horizontal rotary drier of this embodiment; When on when holding together plate 61 and being arranged at the inside of rotating cylinder 10; The particulate C that object being treated W is contained disperses in rotating cylinder 10 volume inside; Thereby can make this particulate C be attached to carrier gas A, and discharge to the outside from fixing exhaust outlet 56 with carrier gas A.The result is, can carry out classification/remove to the particulate C that object being treated W is contained.
And; When holding together plate 61 on each and be configured in the following manner: through the direction of rotation R with rotating cylinder 10 is the front side end that benchmark is positioned at the outlet 50 of rear side; And near the straight line parallel with the axis direction of rotating cylinder 10, stretch out, then carry the rear side that the object being treated W that places on the plate 61 is positioned at outlet 50.Therefore, can prevent that the object being treated W on the plate 61 directly gets into outlet 50, the probability that the feasible object being treated W that mixes the state that particulate C is arranged discharges from outlet 50 reduces.
When holding together panel 60 on a plurality of and being positioned at along at interval position of the axis direction of rotating cylinder 10, the 10 inner object being treated W that move alternately hold together the part of plate 61 and do not have the part of holding together plate 61 on existing at rotating cylinder.Therefore, be divided into repeatedly holding together on the object being treated W, thereby make efficient to improve.
In addition, when on hold together plate 61 week of rotating cylinder 10 upwards each other with equal intervals discretely during arranged spaced, hold together object being treated W on can be efficiently.Particularly; The row that stretch out and object being treated W is held together, hold together plate 61 towards the axle center when inwall along with the rotation of rotating cylinder 10 from rotating cylinder 10; Hold together panel 60 promptly is being provided with when a plurality of with making progress devices spaced apart week; Carrier gas A passes from holding together the object being treated W that plate 61 falls; Therefore; A lot of particulate C and carrier gas A are accompanied, thereby effectiveness of classification is improved.And, hold together panel 60 in the utilization and also have following attached advantage: can improve the contacting efficiency of object being treated W and steam pipe 11, thereby drying efficiency is improved.
In this embodiment; Hold together in the panel 60 last; At least another distolateral (downstream) on hold together panel 60 on hold together plate 61 and have following such position relation: holding together plate 61 on said is benchmark with the direction of rotation R of rotating cylinder 10; On having on the position near the place ahead lateral margin of outlet 50, hold together the cardinal extremity of plate 61, and hold together plate 61 on said and stretch out towards the axle center from the inwall of rotating cylinder 10.Therefore, can hold together on said keep between the next outlet 50 of direction of rotation front side of plate 61 and rotating cylinder 10 and on hold together a lot of object being treated W.The result is, compares with converter action (キ Le Application ア Network シ ヨ Application), can more carefully stir object being treated W, thereby improves the grading effect to object being treated W.
In addition, in this embodiment, on hold together plate 61 and constitute, stretch out towards the axle center of rotating cylinder 10 from cardinal extremity, the terminal part that stretches out is that benchmark forwards bends with the direction of rotation R of rotating cylinder 10.Therefore, can hold together on said keep between the next outlet 50 in direction of rotation the place ahead of plate 61 and rotating cylinder 10 and on hold together more object being treated W.The result is further to improve the grading effect to object being treated W.
When than on when holding together a distolateral position that panel 60 leans on rotating cylinder 10 and being provided with the agitating unit 65 that is used for the object being treated W that is fed in the rotating cylinder 10 is stirred; Since on utilizing, hold together 61 couples of object being treated W of plate hold together on carrying out before object being treated W be stirred, so the particulate C that object being treated W is contained is screened.The result is to make the dispersion efficiency of plate 61 disperse particles C to improve.In addition, though also can not be provided with above agitating unit 65 with on hold together plate 61, if be provided with, then can make raisings such as classification efficiency, become preferred device.
With outlet 50, fixing outlet 57 and when fixedly exhaust outlet 56 is combined; In comprising the whole hierarchical spatial of settling zone 90, utilize carrier gas A and disperse gas N to carry out classification; Wherein, Said outlet 50 is arranged at the perisporium of rotating cylinder 10 and moves along circumferential along with the rotation of rotating cylinder 10; Said fixedly outlet 57 is arranged at the bottom of the classification cover 55 that is provided with the mode that covers this outlet 50; And be fixed and can't move, said fixedly exhaust outlet 56 is arranged at the top of classification cover 55.That is, realize classification through following manner: particulate C discharges from fixing exhaust outlet 56 back above being directed to along with carrier gas A, and remaining particle is directed to the below and from fixedly outlet 57 discharges.
When classification cover 55 inside of rotating cylinder 10 tops become the space that has been full of air, when being settling zone 90, the larger-diameter particle F of ratio that accompanies with carrier gas A falls through inertia in settling zone 90, and from fixedly outlet 57 discharges.
When the path of the object being treated W above the fixing outlet 57 be provided with disperse gas N blow afloat unit 58 time; Can make the particulate C that falls to fixing outlet 57 with other object being treateds W towards fixedly exhaust outlet 56 risings; The result is, to particulate C classification/removing efficient improves.
In this embodiment, hold together on each panel 60 every row on hold together plate 61 number also can not be 4, not special the qualification, but in order to ensure on hold together capacity, preferably be provided with 4～6.In addition, for the quantity of every row outlet 50,, preferably be provided with 10～17 though not special the qualification considered the mechanical strength of the reduction pressure loss, disperse particles C and rotating cylinder 10 etc.
Utilizability on the industry
The present invention can use as the machinery and the method for object being treateds such as coal being carried out dry and classification.As horizontal rotary drier, though preferred steam-tube drier (STD) also can adopt blade mixer (Paddle Mixer) etc.
Claims (5)
1. an object being treated dry classification machine is characterized in that,
These object being treated dry classification facility are equipped with:
Rotate rotating cylinder freely around the axle center, at a distolateral supply port of this rotating cylinder, at another distolateral outlet of this rotating cylinder with object being treated and carrier gas with object being treated and carrier gas;
Heating unit is being supplied with object being treated and from the process that said outlet is discharged, this heating unit is through inner heating comes object being treated is carried out heat drying to said rotating cylinder from said supply port;
The classification cover, it is distolateral that it is arranged to cover another of said rotating cylinder, has the fixedly outlet that is used to discharge object being treated in the bottom of this classification cover, has the fixedly exhaust outlet that is used to discharge carrier gas on the top of this classification cover; And
The unit that blows afloat that disperses gas, it is arranged at the path that the interior object being treated of said classification cover arrives said fixedly outlet.
2. object being treated dry classification machine according to claim 1, wherein,
The unit that blows afloat of said dispersion gas is made up of the tubing that will disperse gas to blow afloat from the hole that is formed on its perisporium,
Said tubing is configured to, and it crosses the path that object being treated arrives said fixedly outlet.
3. object being treated dry classification machine according to claim 1, wherein,
Position above the height of the said rotating cylinder of ratio of said classification cover leans on is formed with the settling zone that disperses object being treated.
4. the dry classification method of an object being treated is characterized in that,
In the dry classification machine of claim 1, coal is used as object being treated.
5. the dry classification method of an object being treated is characterized in that,
The flow-rate ratio of the said dispersion gas in the dry classification machine of claim 1 is few from the flow of the carrier gas that an end of said rotating cylinder is blown into.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-164916 | 2010-07-22 | ||
| JP2010-164914 | 2010-07-22 | ||
| JP2010164916A JP5388962B2 (en) | 2010-07-22 | 2010-07-22 | Dry classification method for workpieces |
| JP2010164914A JP5230700B2 (en) | 2010-07-22 | 2010-07-22 | Horizontal rotary dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102345974A true CN102345974A (en) | 2012-02-08 |
| CN102345974B CN102345974B (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110205311.8A Active CN102345974B (en) | 2010-07-22 | 2011-07-21 | Drying and grading machine for processed object and drying and grading method |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101795048B1 (en) |
| CN (1) | CN102345974B (en) |
| BR (1) | BRPI1104139A2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104774631A (en) * | 2015-04-13 | 2015-07-15 | 陕西煤业化工集团神木天元化工有限公司 | Dedusting technique of rotary furnace for producing blind coal from powder coal |
| CN104789244A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Gas-circulating method for pyrolysis production of anthracite in coal powder rotary furnace |
| CN110100140A (en) * | 2017-09-19 | 2019-08-06 | 中部电力株式会社 | Use the heating device and heating means of overheated steam |
| TWI683082B (en) * | 2014-03-31 | 2020-01-21 | 日商月島機械股份有限公司 | Processed object drying method and horizontal rotary dryer |
| CN112304054A (en) * | 2020-11-02 | 2021-02-02 | 安徽济生元药业有限公司 | Processing equipment of DHA algae oil soft capsule |
| CN115283254A (en) * | 2022-07-29 | 2022-11-04 | 中触媒新材料股份有限公司 | System and method for quickly screening and activating oxygen production adsorbent particle airflow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102090283B1 (en) * | 2017-07-19 | 2020-03-17 | 주식회사 엘지화학 | Drying System Comprising Structure for Removing Fine Particle from Inside of Heat-Exchanger Tube |
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| JP2005274060A (en) * | 2004-03-25 | 2005-10-06 | Kubota Corp | Wet ash drying device |
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- 2011-07-21 BR BRPI1104139-0A patent/BRPI1104139A2/en not_active Application Discontinuation
- 2011-07-21 KR KR1020110072685A patent/KR101795048B1/en active IP Right Grant
- 2011-07-21 CN CN201110205311.8A patent/CN102345974B/en active Active
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| JP2001272169A (en) * | 2000-03-27 | 2001-10-05 | Kurimoto Ltd | Continuous type rotary drier |
| CN2764779Y (en) * | 2004-12-22 | 2006-03-15 | 沈阳戴维环保节能设备有限公司 | Rotary processing unit for semi-coked filtering material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI683082B (en) * | 2014-03-31 | 2020-01-21 | 日商月島機械股份有限公司 | Processed object drying method and horizontal rotary dryer |
| CN104774631A (en) * | 2015-04-13 | 2015-07-15 | 陕西煤业化工集团神木天元化工有限公司 | Dedusting technique of rotary furnace for producing blind coal from powder coal |
| CN104789244A (en) * | 2015-04-13 | 2015-07-22 | 陕西煤业化工集团神木天元化工有限公司 | Gas-circulating method for pyrolysis production of anthracite in coal powder rotary furnace |
| CN104774631B (en) * | 2015-04-13 | 2017-04-12 | 陕西煤业化工集团神木天元化工有限公司 | Dedusting technique of rotary furnace for producing blind coal from powder coal |
| CN110100140A (en) * | 2017-09-19 | 2019-08-06 | 中部电力株式会社 | Use the heating device and heating means of overheated steam |
| US11137208B2 (en) | 2017-09-19 | 2021-10-05 | Chubu Electric Power Co., Inc. | Heating device and heating method, each of which uses superheated steam |
| CN112304054A (en) * | 2020-11-02 | 2021-02-02 | 安徽济生元药业有限公司 | Processing equipment of DHA algae oil soft capsule |
| CN112304054B (en) * | 2020-11-02 | 2021-12-21 | 安徽济生元药业有限公司 | Processing equipment of DHA algae oil soft capsule |
| CN115283254A (en) * | 2022-07-29 | 2022-11-04 | 中触媒新材料股份有限公司 | System and method for quickly screening and activating oxygen production adsorbent particle airflow |
| CN115283254B (en) * | 2022-07-29 | 2023-08-25 | 中触媒新材料股份有限公司 | Rapid screening and activating system and method for air flow of oxygen-making adsorbent particles |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1104139A2 (en) | 2013-01-15 |
| KR20120018278A (en) | 2012-03-02 |
| CN102345974B (en) | 2015-03-18 |
| KR101795048B1 (en) | 2017-11-07 |
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