CN105517972A - Installation and process of pre-calcination - Google Patents
Installation and process of pre-calcination Download PDFInfo
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- CN105517972A CN105517972A CN201480049726.2A CN201480049726A CN105517972A CN 105517972 A CN105517972 A CN 105517972A CN 201480049726 A CN201480049726 A CN 201480049726A CN 105517972 A CN105517972 A CN 105517972A
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- room
- waste material
- precalcining
- push mechanism
- shell
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/44—Burning; Melting
- C04B7/4407—Treatment or selection of the fuel therefor, e.g. use of hazardous waste as secondary fuel ; Use of particular energy sources, e.g. waste hot gases from other processes
- C04B7/4423—Waste or refuse used as fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
- F27B7/32—Arrangement of devices for charging
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/125—Fuels from renewable energy sources, e.g. waste or biomass
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
The invention relates to an installation for pre-calcination (20) of pulverulent mineral materials (22), intended for the production of cement, comprising a pre-calciner (14) including an enclosure (50), supply ducts (70) of the mineral materials into the enclosure, supply ducts (65, 66) of hot gases into the enclosure, at least one exhaust duct (71) of the hot gases from the enclosure, one first chamber (72) communicating with the enclosure, supply ducts (78) of waste materials (80) into the first chamber, at least one second chamber (74) communicating with the enclosure, at least one first mobile pushing part (86) arranged to push the waste material out of the first chamber, the second chamber being intended to receive the waste material pushed out of the first chamber, and at least one second mobile pushing part (86) arranged to push the waste material out of the second chamber.
Description
Technical field
The application relates to the device of mineral material and the use of alternative fuel (especially waste material) that are intended to supply cement kiln for precalcining.Present patent application also relates to the method for the precalcining of this mineral material.
Background technology
Cement is the hydraulic binding agent by grinding the mixture of Wingdale and some material and burn and obtain, described material (such as clay) provides silicon, aluminium and iron to combustion processes thus prepares grog, then by described grog and with gypsum (calcium sulphate dihydrate, CaSO42H2O) calcium sulfate that, the form of hemihydrate (CaSO41/2H2O), anhydrite (anhydrous calciumsulphate, CaSO4) or its mixture is added grinds together.
The thermal treatment being applied to the mixture (being called cement slurry) of mineral material covers all stages of the chemical transformation forming grog.Mainly contain about heating, Wingdale decarbonation (it occurs in about 850 DEG C) and burn till step (it occurs in about 1450 DEG C).Decarbonation corresponds to the conversion reaction of Wingdale to lime.Burn till the reaction corresponding to causing the mineral forming grog.
Preheating steps and most decarbonation carry out usually in decarbonation tower, simultaneously remaining decarbonation and burn till step and carry out in cement kiln.
Decarbonation tower as a rule comprises a series of cyclonic separator be arranged in vertically on several level (level).The cement slurry existed with the form of epipastic mineral material is introduced into the top of tower, and makes raw material enter suspended state in each cyclonic separator by the hot gas from cement kiln.Raw material are heated by contacting with gas in each cyclonic separator, and be then separated due to gravity and fall into the cyclonic separator of next level, in the cyclonic separator of next level, raw material enter suspended state again.After like this by different cyclonic separators, mineral material is introduced into cement kiln.
Cement kiln is usually corresponding to the steel cylinder with internal refractory liner.Steel cylinder to tilt some angles relative to horizontal direction, and rotates around its axis.The lower end of kiln is equipped with burner, and burner can produce the flame that can reach about 10 meters of length.Raw material are provided in kiln in the higher-end of the cylinder relative with burner.The rotation of kiln and inclination make mineral material by described kiln.
Preferably make when mineral material enters cement kiln the decarbonation speed of mineral material high as much as possible, thus reduce the decarbonation stage in cement kiln.Decarbonation reaction is actually the reaction of extremely absorbing heat, and therefore needs the effective heat exchange between hot gas and epipastic mineral material.Because of the unpromising optimization of cement kiln, these exchange and design, if therefore in cement kiln the decarbonation stage too high, then may be necessary to reduce material by the flow velocity of kiln.
However, by mineral material is passed through cyclonic separator, only obtain relatively low decarbonation speed, be generally 30% to 40%.Here it is, and why decarbonation tower comprises precalcining stove usually further, and precalcining stove is arranged along the path of mineral material, and described precalcining stove corresponds to shell, and fuel burns in shell.This can make mineral material be increased to about 90% in the decarbonation degree of cement kiln charging place.The example of precalcining stove is described in french patent application FR2691790.
Precalcining stove can consume the major part be supplied in the fuel in cement mill, such as, reach 70%.The general type of the fuel used comprises refinery coke, coal, oil or Sweet natural gas.
Desirable using alternative fuel as the fuel being used for precalcining stove, such as, from the fuel of waste material.These waste materials are such as tire, household garbage, mud, flammable solid or industrial waste.But a shortcoming is, in current precalcining stove, need fuel to be pulverized and/or grinds can use in a large number, such as, more than 15% of the fuel needed for precalcining stove.Therefore the cost of these fuel is prepared and their uses in cement mill are incompatible.
Summary of the invention
Thus, the feature of embodiment of the present invention is the shortcoming solving aforementioned precalcining stove at least in part.
Another feature of embodiment of the present invention is, by the pre-treatment of restriction to waste material, grinding especially, makes it possible to, in precalcining stove, waste material is used as fuel.
Another feature of embodiment of the present invention is, precalcining stove can be used in the device of cement mill.
Therefore, embodiment of the present invention provide a kind of device of the precalcining for epipastic mineral material, and described epipastic mineral material is intended to the preparation for cement, and described device comprises precalcining stove, and described precalcining stove comprises:
-shell,
-mineral material is supplied to the feed line of described shell,
-hot gas is supplied to the feed line of described shell,
-at least one discharge conduit that hot gas is discharged from described shell,
-the first Room of being communicated with shell,
-waste material is supplied to the feed line of the first Room,
-at least one second Room, it is connected with described shell,
-at least one first moves push mechanism, and it is set to waste material to release the first Room, and the second Room is intended to receive the waste material released from the first Room, and
-at least one second moves push mechanism, and it is set to waste material to release the second Room.
According to embodiment of the present invention, each push mechanism can move in the mode of translational movement relative to shell.
According to embodiment of the present invention, at least part of waste material does not grind.
According to embodiment of the present invention, waste material is selected from: tire, household garbage, mud, ignitable fuel or industrial waste.
According to embodiment of the present invention, described device comprises at least one first actuator, at least one first actuator described is connected to the first push mechanism, and be configured such that the first push mechanism moves in the first chamber between two end positions, and described device comprises at least one second actuator, at least one second actuator described is connected to the second push mechanism, and is suitable for the second push mechanism is moved in the second chamber between two end positions.
According to embodiment of the present invention, described device comprises mixing section further and makes the cyclonic separator of material separation, and described mixing section is communicated with shell, and is intended to the flue gas being supplied with auto-combustion kiln, described cyclonic separator by tubes connection to reaction chamber.
According to embodiment of the present invention, described device comprise by hot discharge gas to the first supplying duct of shell and by hot discharge gas to the second supplying duct of linking conduit, mixing section is connected to cyclonic separator by described linking conduit.
According to embodiment of the present invention, the distance between the bottom of the second Room and the bottom of the first Room changes between 200mm to 1200mm.
Embodiment of the present invention provide a kind of method for operating precalcining device defined above, and described method comprises the steps:
-waste material is supplied to the first Room;
-waste material is kept continuing for the first time length in the first chamber;
-move push mechanism via described first waste material is escaped and enter the second Room from the first Room, described first moves push mechanism is suitable for waste material to release the first Room;
-waste material is kept continuing for the second time length in the second chamber; And
-move push mechanism via described second waste material is discharged from the second Room, described second moves push mechanism is suitable for waste material to release the second Room.
According to embodiment of the present invention, in the first Room and the second Room, carry out the gasification for waste material.
According to embodiment of the present invention, the residence time of waste material in precalcining stove changed between 5 minutes to 90 minutes.
Accompanying drawing explanation
At reference accompanying drawing subsequently in the description of concrete non-limiting embodiments of the present invention, will be described, in accompanying drawing these feature and advantage and other side:
Fig. 1 partly illustrates the example in the cement mill of the precalcining stove comprising series connection with graphic form;
Fig. 2 partly illustrates the example in the cement mill comprising precalcining stove in parallel with graphic form;
Fig. 3 more specifically illustrates the embodiment of the precalcining stove in Fig. 1;
Fig. 4 more specifically illustrates the embodiment of the precalcining stove in Fig. 2;
Fig. 5 and Fig. 6 is the cross section of the graphic form of the precalcining stove of Fig. 3 and Fig. 4 respectively.
Fig. 7 and Fig. 8 is the cross section of the precalcining stove of Fig. 3 and Fig. 4 respectively, and it can compare with the cross section of Fig. 6, and has two operation stepss of precalcining stove; And
Fig. 9 and Figure 10 represents two other embodiments of the precalcining stove of Fig. 1 or Fig. 2.
Embodiment
For purposes of clarity, in different figures, identical element is indicated by identical Reference numeral, and in addition, each accompanying drawing is not drawn to scale.In addition, in specification sheets part subsequently, unless otherwise indicated, term " haply ", " about " and " being about " mean " many 10% or few 10% ".In addition, in part subsequently, adjective " below " and " top " use relative to reference direction, such as vertical direction.In addition, the element that only understanding of this description is useful represents and describes.Especially, the concrete structure of the element in cement mill is known for those skilled in the art, is not therefore specifically described in the following description.
Fig. 1 illustrates the example of cement mill device 10.The mineral material provided with powdery state is one after the other through pre-heaters 12, precalcining stove 14, cement kiln 16 and water cooler 18.Pre-heaters 12 and precalcining stove 14 form precalcining tower 20.Precalcining stove 14 can be integrated in pre-heaters 12.
Epipastic mineral material 22 (corresponding to cement slurry) is supplied to pre-heaters 12.Pre-heaters 12 can comprise a series of cyclonic separator be arranged in vertically on several level.Mineral material is powder morphology, is typically made up of the particle with the size being less than 100 μm according to 90% of quality meter.They comprise Wingdale and the material (such as clay) containing silicon, aluminium or iron particularly.The heat smoke 24 carrying out auto-combustion kiln 16 is risen through pre-heaters 12 by connecting box 26 and is preheated these mineral materials.Flue gas 27 is released into the outside of device 10 after being filtered.
The mineral material 28 through heating leaving pre-heaters 12 is utilized by the consumption of fuel to be calcined from the pre-warmed air of water cooler 18 by conduit 30 in precalcining stove 14.Being provided in kiln 16 with the material 34 of precalcining by connecting box 26 through preheating, completing burning in order to the pre-warmed air 38 be used for from water cooler 18 by the energy supply from the burning of fuel 36.The product 40 that burns till leaving kiln 16 corresponds to grog; It cools in water cooler 18.Grog 42 through cooling is discharged from water cooler 18.Arrow 44 in Fig. 1 shows excessive warm air and leaves water cooler 18 and be intended to for other purposes.
Fig. 2 illustrates another example of cement mill device 45.This cement mill device comprises identical element with the cement mill device 10 shown in Fig. 1, and difference is that precalcining stove 14 is parallel to pre-heaters 12 and arranges.Epipastic mineral material one after the other passes pre-heaters 12, precalcining stove 14, again passes pre-heaters 12, cement kiln 16 and water cooler 18.Specifically, the mineral material 32 through precalcining from precalcining stove 14 is reintroduced into pre-heaters 12.
Fig. 3 and Fig. 4 still more specifically illustrates two examples of the part of the decarbonation tower 20 of the embodiment comprising precalcining stove 14 in the form shown, and described two examples correspond respectively to the cement mill device 10 shown in Fig. 1 and the cement mill device 45 shown in Fig. 2.
Fig. 5 and Fig. 6 is that the precalcining stove 14 of Fig. 3 and Fig. 4 is according to the cross section of the graphic form of line V-V and line VI-VI respectively.
Precalcining stove 14 comprises shell 50, and described shell is connected to mixing section 54 in its underpart by conduit 52.Mixing section 54 is connected to connecting box 26 by means of valve 56, and flue gas 24 penetrates the bottom of mixing section 54 from described connecting box.The top of mixing section 54 is communicated with the rear-conduit (post-combustionduct) 57 (such as with the form of swan neck) that burns and is expelled to cyclonic separator 58, from cyclonic separator 58, the mineral material 34 through precalcining can be recycled.
Shell 50 can relative to D axis for axis symmetry.Inwall can comprise the upper part 60 extended by lower part 62, and lower part 62 forms the level in succession around D axis, and described level in succession moves closer in D axis from top to bottom.According to variant of the present invention, level in succession only in the side of shell 50, and therefore not around D axis.The inwall of shell 50 can be obtained by refractory brick.
Be used as to carry air precalcining stove 14 from a part (indicated by arrow 64 and transmitted by conduit 30) for the warm air of water cooler 18 recovery.Conduit 30 is divided into several conduit further, especially, is divided into one or more conduits 65 of the bottom arriving shell 50, such as, at the level place (as shown in Figure 4) of conduit 52.Conduit 30 is divided into the conduit 66 on the top arriving shell 50 further.Another conduit 68 can arrive the top (as shown in Figure 3) of mixing section 54 or arrive the linking conduit 57 (as shown in Figure 4) of mixing section 54 and cyclonic separator 58.By the mode of variant, also conduit 68 can not be used.Valve (not shown) can be set to be used for regulating the flow velocity of the hot gas of circulation in conduit 65,66 and 68.
A conduit 65 and two conduits 66 are shown in Fig. 3 and Fig. 4, and two conduits 66 are shown in Figure 5.Even so, a large amount of conduits 65 and 66 also can be set.According to embodiment of the present invention, the general tangential inwall in shell 50 of conduit 66 and enter shell 50, to make the gas entering shell 50 carry out turbulent motion, as in Figure 5 by shown by arrow 68.The conduit 66 be communicated with the top of shell 50 can carry 80% of the warm air such as reclaimed from water cooler 18.The conduit 65 be communicated with the bottom of shell 50 such as can carry 20% of the warm air reclaimed from water cooler 18.
The part of epipastic mineral material is supplied to shell 50 by conduit 70.These mineral materials can come from another cyclonic separator (not shown) of decarbonation tower 20.By way of example, the level place that conduit 70 is roughly connected to shell 50 at conduit 66 arrives conduit 66.In Figure 5, the end of conduit 70 represents by a dotted line.Disturbance device can be set in conduit 66 and/or conduit 70, thus contribute to obtaining turbulent flow.
Shell 50 extends from the top of shell via the conduit 71 be communicated with the rear-conduit 57 that burns, and conduit 71 is for being expelled to mixing section 54 by gas from shell 50.
Waste material reaction chamber is arranged on several level on the lower wall 62 of shell 50.The quantity of level can change between 2 to 20, is preferably between 2 to 10.In the present embodiment of the present invention shown in Fig. 3 to Fig. 6, reaction chamber is arranged on two levels.Reference numeral 72 indicates the reaction chamber on the summit closest to shell 50, and Reference numeral 74 indicates the reaction chamber closest to conduit 52.Each reaction chamber 72,74 corresponds to the approximate horizontal part of inwall 62.Each reaction chamber 72,74 is up and towards D axis side opening to the internal space of shell 50.
Conduit 78 arranges the reaction chamber 72 being used for waste material being supplied to top.Waste material can be tire, household garbage, mud, flammable solid or industrial waste.Waste material can not carry out grinding or only carrying out rough grinding at least in part.The mean sizes being incorporated into each constituent element of the waste material in shell 50 can be attributed to such spheroid, and the radius of this spheroid can change in 20 to 500mm.The overall dimension introducing the waste material constituent element in shell 50 can change in 10 to 1500mm.By way of example, each conduit 78 towards shell 50 opening, is preferably the outer boundary along upper room 72 in the perpendicular of upper room 72.Waste material can fall into upper room 72 due to gravity.In reaction chamber 72,74, waste material 80 represents in figs. 3 and 4 in the form shown.Shield or rotation lock conduit (not shown) can be set thus with the mode of leakproof close chamber 78 when not having waste material.
Waste material running gear 82 is associated with each reaction chamber 72,74.In the present embodiment of the present invention, four waste material running gears 82 are associated with each reaction chamber 72,74.Each device 82 can comprise actuator 84, and figure 6 illustrates each waste material running gear 82 has two actuators 84, is suitable for the mobile push mechanism 86 be associated with reaction chamber 72,74.Push mechanism 86 can have block or cultrate shape, and can optionally be passed by the circulation duct of cooling fluid.Push mechanism 86 can be obtained by refractory materials.Each actuator 84 can correspond to whisky jack, Pneumatic jack or have the actuator of electro-motor.Push mechanism 86 can such as move in each reaction chamber 72,74 according to translational movement between first end position and the second end position.In first end position, therefore push mechanism 86 apart from D axis farthest, and penetrates reaction chamber 72,74 as few as possible.In the present embodiment of the present invention, in first end position, each push mechanism 86 does not penetrate into shell 50 in fact.In the second end position, push mechanism 86 is nearest apart from D axis, and therefore penetrates into reaction chamber 72,74 as much as possible.
When push mechanism 86 moves forward in the reaction chamber 72,74 be associated, it is by least part of release reaction chamber in the waste material that is present in reaction chamber 72,74.
Upper room 72 and lower room 74 are positioned at different level places substantially.Therefore, when waste material is discharged from upper room 72, they fall into lower room 74.When waste material is discharged from lower room 74, they drop in conduit 52.
By way of example, for each reaction chamber:
-relative to D axisymmetrical, two waste material running gears 82 are set, and the push mechanism 86 of correspondence moves in the direction di and
-relative to D axisymmetrical, two waste material running gears 82 are set, and the push mechanism 86 of correspondence is moving perpendicular on the direction D2 of direction D1.
Direction D1 and D2 can be level.In figure 6, four push mechanism 86 being associated with lower reaction chamber 74 illustrate in first end position.
According to embodiment of the present invention, in the preparatory phase of cement, each push mechanism 86 between first end position and the 3rd mid-way, can move back and forth between first end position and the second end position.3rd mid-way corresponds to push mechanism 86 total path in a combustion chamber of (such as about 50%) of such as 25% to 75%.This means that thus push mechanism 86 can not penetrate in the combustion chamber 72,74 be associated maximum.An advantage of this embodiment of the present invention resides in reduced the interface in cement preparatory phase process between fixed part and moving portion.Another advantage is for remain on permanent for waste material on fixing part and moving-member.When stopping work in cement mill, push mechanism 86 can be sent to the second end position, thus whole waste materials is gone out from precalcining fire grate.
Burner (not shown) can optionally be present in shell 50 or in conduit 52.Preferably, in shell 50 or conduit 52, burner is not had.Decarbonation tower 20 may further include the standard precalcining stove being equipped with burner.
Decarbonation tower 20 operates in the following manner.Powdery mineral particles is introduced into shell 50 via conduit 70.Mineral material can from another cyclonic separator of decarbonation tower 20, and can stand heating and partly decarbonation.
The particle of mineral material is carried by the gas (gas 64 especially, supplied from water cooler 18 and by conduit 65,66) existed in shell 50.After passing precalcining stove 14, the particle of mineral material is carried through conduit 71, then by afterfire conduit 57.The particle of mineral material is carried by the flue gas 24 from kiln 16 and enters cyclonic separator 58, and at cyclonic separator 58 place, the particle of mineral material is separated and falls due to gravity to charging place of kiln 16.The particle of mineral material in shell 50 through time length can change 0.1 second to 10 seconds, particularly about 2 seconds.
The gasification being present in the waste material 80 in reaction chamber 72,74 is main in shell 50.This is so a kind of process: according to this process, and waste material 80 changes carbon monoxide, hydrogen, carbonic acid gas and other volatile hydrocarbons into.This process is carried out at higher than the temperature of 700 DEG C, utilizes the amount of controlled molecular oxygen and does not burn in a large number.Molecular oxygen can be provided by the gas 64 from water cooler 18.When there is not mixing between molecular oxygen and waste material, gasification is main.By way of example, the medial temperature in shell 50 can change between 700 DEG C to 1000 DEG C.Even so, combustion reactions can exist with gasification simultaneously.Hot gas from the gasification of waste material 80 mixes with the hot gas 64 from water cooler 18, and causes burning and the decarbonation of mineral material particles.
Waste material is introduced into upper room 72 via conduit 78.When the gasification of the waste material in upper room 72 is fully carried out, pushed upwards parts 86 move in upper room 72, thus make the waste material from upper room 72 fall into lower room 74.Then the gasification of waste material continues in lower room 74, is placed in upper room 72 with stylish waste material.Instantly when the gasification in room 74 is fully carried out, lower push mechanism 86 moves in lower room 74, thus makes the waste material from lower room 74 fall into conduit 52.
Waste material falls into lower room 74 from upper room 72 and makes advantageously to stir waste material in gasification, makes the amount of the waste material that may increase gasification.By way of example, the height of drop of the waste material between the bottom and lower room 74 of upper room 72 can change between 200mm to 1200mm, can be about 600mm especially.In addition, the discharge of waste material is by carrying out with the push mechanism of motion of translation movement via actuator, that is by having the system of simple structure and stable schedule of operation, this is mutually compatible with the strict operations specifications existed in precalcining stove 14.
Fig. 7 and Fig. 8 shows in the preparatory phase of cement, the move sequence of the push mechanism 86 of lower room 74.In the figure 7, represent and be in first end position in the push mechanism 86 of the upper and lower of figure, and represent and be in the 3rd mid-way at the right part of figure and the push mechanism 86 of left part.In fig. 8, represent and be in first end position at the left part of figure and the push mechanism 86 of right part, and represent and be in the 3rd mid-way in the push mechanism 86 of the upper and lower of figure.Push mechanism 86 can move according to continuous print circulation, and each circulation comprises by Fig. 7,6,8, and 6 and then path (passage) in succession to the structure shown in Fig. 7.The push mechanism 86 be associated with upper room 72 can move in a similar fashion.
When stopping work in cement mill, can carry out operation cycle as above to be discharged by the whole waste materials being present in precalcining stove, its difference is push mechanism to move to the second end.
Precalcining stove 14 comprises the regulation system that energy manufactures, and described energy is provided by the gasification of waste material.This can be controlled by the move sequence of the push mechanism 86 to upper room 72 and lower room 74 and by controlling the feeding rate of waste material in precalcining stove and the flow velocity in conduit 65 and 66 and realize.Temperature in shell 50 can be measured, measure for this adjustment and the typical case that carries out as the energy provided the gasification by waste material.
By way of example, the residence time of waste material in shell 50, to be introduced moment in room 72 by conduit 78 until it is discharged into the moment in conduit 52 from it, can change between 5 minutes to 90 minutes, especially can within about 1 hour.The size of precalcining stove 14 is suitable for the flow velocity needed for cement kiln 16.The charging flow velocity of the waste material in shell 50 depends on the size of precalcining stove 14 and the flow velocity of cement kiln 16.By way of example, the receiving surface from the waste material of upper room 72 and lower room 74 can at 20m
2to 100m
2between change, be about 60m especially
2.The maximum path of each push mechanism 86 can from 10cm to 1.5m.
According to variant of the present invention, the combustion reactions of waste material can be main in shell 50.In this case, compressed-air actuated feed line can be set in reaction chamber 72,74.
Fig. 9 shows another embodiment of the present invention, and precalcining stove 100 comprises whole elements of the precalcining stove 14 shown in Fig. 3 and Fig. 4, and difference is that the upper wall 92 of each push mechanism 86 also plays the effect of combustion chamber.In the embodiment of the present invention shown in Fig. 9, thus precalcining stove 100 includes the combustion chamber on four levels.
Waste material is supplied by the conduit 78 on the upper wall 92 of upper push mechanism 86, and described upper wall forms the first reaction chamber 94.When upper push mechanism 86 is away from D axis, the part being present in the waste material on the upper wall 92 of push mechanism 86 is fallen in the part of the wall 62 in the front in upper push mechanism 86, and wall 62 forms the second reaction chamber 96.When upper push mechanism 86 is close to D axis, the part of waste material is released the second reaction chamber 96 by them.This waste material is fallen on the upper wall 92 of lower push mechanism 86, and described upper wall 92 forms the 3rd reaction chamber 98.Instantly, when push mechanism 86 is away from D axis, the part being present in the waste material on the upper wall 92 of lower push mechanism 86 is fallen in the part of the wall 62 in the front in lower push mechanism 86, and described wall 62 forms the 4th reaction chamber 98.Instantly, when push mechanism 86 is close to D axis, the part of waste material is released the 4th reaction chamber 52 by them, and makes it to enter conduit 52.
Figure 10 illustrates another embodiment of precalcining stove 110 of the present invention, and in precalcining stove 110, reaction chamber 112,114 is arranged in the mode of ladder, and towards identical direction, a reaction chamber is the extension of another reaction chamber.In this embodiment of the present invention, waste material is directed to the single side of shell 50, and advances in a linear fashion.
Describe specific embodiment of the invention scheme.Various changes and modifications will be presented to those skilled in the art.Especially, even if precalcining stove 14 has been described to be connected to mixing section 54, and mixing section 54 self is connected to cyclonic separator 58 by catheter coude 57, precalcining stove 14 directly can be connected to cyclonic separator 58 or directly be connected to charging place of kiln 16.In addition, even if in aforementioned embodiment of the present invention, lower room is associated with each upper room, and obviously the size of lower room can be enough large, to receive the waste material of room on two or more.
Claims (12)
1., for carrying out a device for precalcining (20) to epipastic mineral material (22), described device is intended to the preparation for cement (42) and comprises precalcining stove (14), and described precalcining stove comprises:
-shell (50),
-mineral material is supplied to the feed line (70) of described shell,
-hot gas is supplied to the feed line (65,66) of described shell,
-at least one discharge conduit (71) that hot gas is discharged from described shell,
-one the first Room (72), it is connected with described shell, waste material (80) is supplied to the feed line (78) of the first Room,
-at least one second Room (74), it is connected with described shell,
-at least one first moves push mechanism (86), and it is set to waste material to release the first Room, and the second Room is intended to receive the waste material released from the first Room, and
-at least one second moves push mechanism (86), and it is set to waste material to release the second Room.
2. the device for precalcining (20) according to claim 1, its housing (50) comprises the first Room (72) and at least described second Room (74).
3. the device for precalcining (20) according to claim 1 and 2, wherein each push mechanism (86) moves in the mode of translational movement relative to shell (50).
4. the device for precalcining according to any one in claims 1 to 3, wherein not the grinding at least partially of waste material (80).
5. the device for precalcining (20) according to any one in Claims 1-4, wherein waste material (80) is selected from: tire, household garbage, mud, ignitable fuel or industrial waste.
6. the device for precalcining (20) according to any one in claim 1 to 5, it comprises at least one first actuator (84) and comprises at least one second actuator (84), at least one first actuator (84) described is connected to the first push mechanism and is configured such that the first push mechanism moves between two end positions in the first Room (72), at least one second actuator (84) described is connected to the second push mechanism, and be configured such that second component moves between two end positions in the second Room (72).
7. the device for precalcining (20) according to any one in claim 1 to 6, its cyclonic separator (58) comprising mixing section (54) further and make material separation, described mixing section (54) is communicated with shell (50) and is supplied with the flue gas (24) of auto-combustion kiln (16), and described cyclonic separator (58) is connected to reaction chamber by conduit (57).
8. the device for precalcining (20) according to claim 7, it comprise by hot discharge gas to first supplying duct (66) of shell (50) and by hot discharge gas to second supplying duct (68) of linking conduit (57), mixing section (54) is connected to cyclonic separator (58) by described linking conduit (57).
9. the device for precalcining (20) according to any one in claim 1 to 8, the distance wherein between the bottom and the bottom of the first Room of the second Room (74) changes between 200mm to 1200mm.
10., for operating a method for precalcining (20) device according to any one in claim 1 to 9, it comprises the steps:
-waste material (80) is supplied to the first Room (72);
-waste material is kept continuing for the first time length in the first chamber;
-move push mechanism (86) via described first to make waste material discharge the first Room to enter the second Room (74), described first moves push mechanism (86) is suitable for waste material being released the first Room (74);
-waste material is kept continuing for the second time length in the second chamber; And
-move push mechanism (86) via described second to make waste material discharge the second Room, described second moves push mechanism (86) is suitable for waste material being released the second Room (74).
11. methods according to claim 10, wherein carry out the gasification of waste material (80) in the first Room and the second Room (72,74).
12. methods according to claim 10 or 11, wherein the residence time of waste material in precalcining stove (14) changed between 5 minutes to 90 minutes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1358693A FR3010405A1 (en) | 2013-09-10 | 2013-09-10 | INSTALLATION AND PRECALCINATION METHOD |
| FR1358693 | 2013-09-10 | ||
| PCT/EP2014/069079 WO2015036361A1 (en) | 2013-09-10 | 2014-09-08 | Installation and process of precalcination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105517972A true CN105517972A (en) | 2016-04-20 |
Family
ID=49876800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480049726.2A Pending CN105517972A (en) | 2013-09-10 | 2014-09-08 | Installation and process of pre-calcination |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3044181A1 (en) |
| CN (1) | CN105517972A (en) |
| FR (1) | FR3010405A1 (en) |
| MX (1) | MX2016002956A (en) |
| PH (1) | PH12016500440A1 (en) |
| WO (1) | WO2015036361A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312984A (en) * | 2016-06-22 | 2019-02-05 | 蒂森克虏伯工业解决方案股份公司 | The device and method of raw material for thermal treatment of fluidizable |
| CN109312983A (en) * | 2016-06-21 | 2019-02-05 | 蒂森克虏伯工业解决方案股份公司 | Heat-treating apparatus and method for mineral material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5364265A (en) * | 1992-05-29 | 1994-11-15 | Cle | Equipment for and method of precalcining any mineral materials whatsoever |
| CN102070308A (en) * | 2010-12-01 | 2011-05-25 | 中信重工机械股份有限公司 | Device technology configuration method for treating house refuses by using rotary cement kiln |
| CN102607044A (en) * | 2012-04-20 | 2012-07-25 | 成都建筑材料工业设计研究院有限公司 | Incineration device for treating multi-variety and multi-phase wastes |
| US8474387B2 (en) * | 2009-06-08 | 2013-07-02 | Flsmidth A/S | Method and apparatus for incineration of combustible waste |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9608341D0 (en) * | 1996-04-23 | 1996-06-26 | Blue Circle Ind Plc | Disposal of waste tyres |
-
2013
- 2013-09-10 FR FR1358693A patent/FR3010405A1/en not_active Withdrawn
-
2014
- 2014-09-08 CN CN201480049726.2A patent/CN105517972A/en active Pending
- 2014-09-08 MX MX2016002956A patent/MX2016002956A/en unknown
- 2014-09-08 WO PCT/EP2014/069079 patent/WO2015036361A1/en active Application Filing
- 2014-09-08 EP EP14771809.2A patent/EP3044181A1/en not_active Withdrawn
-
2016
- 2016-03-08 PH PH12016500440A patent/PH12016500440A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5364265A (en) * | 1992-05-29 | 1994-11-15 | Cle | Equipment for and method of precalcining any mineral materials whatsoever |
| US8474387B2 (en) * | 2009-06-08 | 2013-07-02 | Flsmidth A/S | Method and apparatus for incineration of combustible waste |
| CN102070308A (en) * | 2010-12-01 | 2011-05-25 | 中信重工机械股份有限公司 | Device technology configuration method for treating house refuses by using rotary cement kiln |
| CN102607044A (en) * | 2012-04-20 | 2012-07-25 | 成都建筑材料工业设计研究院有限公司 | Incineration device for treating multi-variety and multi-phase wastes |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109312983A (en) * | 2016-06-21 | 2019-02-05 | 蒂森克虏伯工业解决方案股份公司 | Heat-treating apparatus and method for mineral material |
| CN109312984A (en) * | 2016-06-22 | 2019-02-05 | 蒂森克虏伯工业解决方案股份公司 | The device and method of raw material for thermal treatment of fluidizable |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3010405A1 (en) | 2015-03-13 |
| WO2015036361A1 (en) | 2015-03-19 |
| EP3044181A1 (en) | 2016-07-20 |
| PH12016500440A1 (en) | 2016-05-16 |
| MX2016002956A (en) | 2016-11-18 |
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