EP2297519A2 - Method and device for feeding conveyable materials to reaction furnaces - Google Patents
Method and device for feeding conveyable materials to reaction furnacesInfo
- Publication number
- EP2297519A2 EP2297519A2 EP09757318A EP09757318A EP2297519A2 EP 2297519 A2 EP2297519 A2 EP 2297519A2 EP 09757318 A EP09757318 A EP 09757318A EP 09757318 A EP09757318 A EP 09757318A EP 2297519 A2 EP2297519 A2 EP 2297519A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- lance
- furnace
- conveyor
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/08—Screw feeders; Screw dischargers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/18—Charging particulate material using a fluid carrier
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/12—Waste feed arrangements using conveyors
- F23G2205/121—Screw conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/18—Waste feed arrangements using airlock systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/20—Waste feed arrangements using airblast or pneumatic feeding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/202—Feeding/conveying devices using screws
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/03001—Airlock sections in solid fuel supply lines
Definitions
- the invention relates to a method and an apparatus for feeding eligible materials to reaction furnaces.
- “Materials” for the purposes of this invention also include mixtures of materials. "Eligible” in the sense of this invention means that the material is free-flowing and / or free-flowing and / or pourable and / or pasty.
- the teaching according to the invention can be used advantageously in particular for supplying mixtures of comminuted, dry or liquid-mixed waste materials in incinerators.
- Advantageous applications are the supply of fuel in furnaces for cement production or in the pressure zone of shaft furnaces for the production of pig iron that is under considerable overpressure relative to the atmosphere.
- the materials to be delivered may include solid parts and liquids. Size distribution and type of solids, as well as type and proportion of liquids contained can vary within wide ranges.
- the solids contained may be or contain hard particles (eg metal parts, mineral constituents, siliceous constituents) and softer parts such as natural or artificial fibers, textile parts, animal and vegetable wastes, plastics and foams.
- the liquids can be different in many areas. (Water, oils, fats, paints, adhesives, other chemicals, tar, .).
- the supply of bulk material which is obtained as a light fraction in the shredding of waste, is substantially dry and contains a considerable proportion of fibers or fibrous parts and hardly any metal is considerably simplified by the invention. Based on the weight of such bulk material normally has a respectable calorific value.
- AT 502 048 B1 describes a method and an apparatus for feeding bulk material having solid and liquid components to a processing plant. After the bulk material has been conveyed to the system only under ambient pressure with non-operating conveyors, it is pressurized by a pump and thereby conveyed through a narrow lance into the system. The method is only applicable if the material is actually pumpable, which is unfortunately not true for many bulk materials, especially those that contain little liquid.
- DE 199 09 132 A1 describes a supply of bulk materials by means of a pneumatic conveying path from a storage container to a cupola.
- Storage tank and conveyor string are under higher gas pressure than the cupola. Air flowing out of the conveyor line conveys bulk material into the oven at a relatively high speed. Due to these conditions, burn-back from the furnace into the conveyor system is practically impossible.
- the problem with the design is that the functionality depends strongly on the properties of the bulk material and that with the bulk material a lot of air is introduced into the cupola, so that the proper control of the combustion is more difficult.
- the storage container is not directly at the implementation site through the furnace wall, but typically ten to a hundred meters away. From a storage container several implementation sites are supplied by the furnace wall. This results in the requirement of long, not continuous straight strands for the pneumatic conveying, so that the Feeding process with minimal changes in the material properties of the material to be conveyed or pressure fluctuations in the cupola is extremely prone to failure.
- EP 0 060 137 A1 proposes a pneumatic conveyor track for granular fuel.
- the same air pressure prevails as in the conveyor line.
- the discharge of the material from the reservoir and thus the supply to the pneumatic conveying path takes place with the aid of a screw conveyor working as a screw conveyor. This is at least the controllability of the amount of material introduced into the conveyor line slightly less dependent on the properties of the bulk material over the previously discussed methods. Otherwise, the same problems exist as in DE 199 09 132 A1.
- EP 48008 A1, EP 299231 A1, EP 302047 A1, WO 9746719 A1, WO 9911825 A1 and WO 200148251 A1 deal with the so-called Corex process for the production of crude steel.
- the free-flowing granular raw material is passed through a drop-down path formed by a pressure-tight pipeline into the reaction space below the raw material container.
- either the metered discharge of the raw material from the raw material container or the metered supply of the raw material from the vertical fall distance into the reaction space by means of a short, straight line in the horizontal direction promoting metering screw.
- DE 2 249 453 A1 shows a feed device for granular fuel to a furnace chamber under elevated pressure by means of two screw conveyors.
- a first auger conveys the material away from a non-pressurized sampling point and compresses it at its end to a tight stopper.
- the plug is scraped by a device again and the mashed material is fed through a second screw conveyor to the furnace.
- the second conveyor line is under the pressure prevailing in the oven room. If anything, the proposed method can work only for a very narrow group of materials to be conveyed, and only at low pressures, and certainly requires a lot of supervision and maintenance.
- the object underlying the invention is to provide a method and an apparatus for the feeding of eligible material to and in reaction furnaces, in which also an overpressure can prevail.
- the conveying should be robust against variations in composition, particle size distribution and other material properties of the material being conveyed. It should also dry material whose particles to pipe walls, etc. have a high coefficient of friction, can be supplied. It should not necessarily be necessary, together with the material to be conveyed to introduce a high proportion of conveying air or conveying gas in the reaction furnace.
- the often difficult space pressure and temperature conditions in the area of the passage through the furnace wall should be well catered for.
- the conveying should work safely and robustly even with very long conveyor lines, which may also include directional changes, rising sections and distribution points.
- the cavity opens into the furnace chamber through a connecting tube, which is designed as a lance, which has a reduced cross-sectional area in relation to the upstream conveying strand.
- the material to be conveyed is moved into the initial region of the lance with the aid of a non-pressure mechanical conveyor.
- the material is introduced either via a pump or via a lock and a closed in the operating condition of the outside air reservoir.
- the reservoir itself is designed as a lock.
- the space requirement on the furnace wall is low and the backpressure from the furnace does not lead to great forces, which tend to push the lance away from the furnace.
- the lance is cooled.
- the material to be conveyed is also moved to lying away from the furnace areas of the conveyor line within the pressure-tight closed by the outside air cavity by means of pressure-free working mechanical conveyor.
- pressure-free mechanical conveyors are used not only for direct discharge from the reservoir or for direct entry into the reaction furnace, but especially on those sections of the conveying path, which completely of reservoir and reaction furnace several meters far lie away. It is particularly advantageous to apply such conveyors on upwardly leading and / or curved sections and / or before and after branching points of the conveying section, since in these sections other conveying means are increasingly problematic.
- Pressure-free mechanical conveyors in the sense of this invention are those in which it is not necessary for the conveying function that propagates a pressure in the material to be conveyed along the conveying path, or that a gaseous or liquid conveying medium moves the material to be conveyed, but in the material to be conveyed is moved substantially by direct contact with a moving surface of the conveyor.
- a non-pressurized mechanical conveyor generally causes no division of the conveyor line in different pressure ranges.
- An example of such a conveyor is a conveyor belt. Regardless of the length of the conveying path, the non-pressurized delivery does not change the pressure in the conveyed material or in the gas surrounding the material.
- the conveyor line is very long and also rising and / or angled and / or curved form.
- the reservoir from which material is conveyed away be located very far away from the reaction furnace, which space problems can be avoided on the furnace.
- the reservoir is advantageously itself designed as a lock, the reservoir is alternately once associated with the outside air and filled in this state, and secondly decoupled from the outside air, connected to the pressure-tight closed by the ambient air cavity and emptied into this.
- the feeding of eligible materials to reaction furnaces zoom in a closed by the outside air cavity by means of pressure-free working mechanical conveyor is particularly advantageous in combination with a connecting pipe to the furnace interior, which is designed as a lance, which has a relation to the upstream conveyor strand reduced cross-sectional area. But it is also useful in almost every other embodiment of the implementation through the furnace wall.
- Preference is conveyed by means of a screw conveyor in the initial region of the lance, since this structure is simple and robust.
- the risk of clogging at the entrance to the lance can be particularly well reduced by the fact that from the side of the non-pressurized mechanical conveyor ago, the tip of a pointed hollow body protrudes to the input of the lance and that in the region of the tip of this body from a or more orifices of air or gas, which is in the body at a higher pressure than the furnace pressure.
- the pointed body may be formed by the hollow axis of an axle-guided auger.
- the non-pressurized delivery does not change the pressure in the conveyed material or in the gas surrounding the material.
- a first additional aspect of the invention relates to a method for feeding eligible materials to a reaction furnace by a pressure-tight sealed from the outside air, opening into the furnace chamber via a connecting tube cavity, wherein the materials via a lock and a reservoir whose interior in the operating state with the is closed by the outside air pressure sealed cavity, are introduced into this cavity and therein in at least one stretch, which is located both from the reservoir and from the furnace, are conveyed with at least one non-pressure mechanical conveyor.
- the connecting tube of the pressure-tight closed by the ambient air cavity towards the furnace chamber is formed as a lance, which is opposite to the upstream conveying line has reduced cross-sectional area and through this lance flows an air or gas stream into the furnace chamber.
- this is conveyed by a non-operating mechanical conveyor into the initial region of the lance.
- a second additional aspect of the invention relates to a device for feeding eligible materials to a reaction furnace by a pressure-tight sealed from the outside air, opening into the furnace chamber via a connecting tube cavity, wherein the device comprises a lock for the materials and a reservoir, wherein the reservoir is connected in the operating state with the pressure-sealed by the outside air cavity, and wherein in this cavity in at least one stretch, which is located both from the reservoir and from the furnace, at least one non-pressure working mechanical conveyor is arranged.
- this second additional aspect prevails in the cavity a relative to the furnace chamber elevated air or gas pressure prevails and the connecting pipe to the furnace chamber is formed as a lance, which has a relation to the upstream conveyor strand reduced cross-sectional area.
- a pressure-less mechanical conveyor is arranged in the cavity in front of the connecting tube to the furnace chamber forming lance, the effect of which extends into the initial region of the lance.
- this non-pressure working mechanical conveyor is an axisless screw conveyor.
- this non-pressure working mechanical conveyor is a blast wheel.
- the pressure-tight sealed from the outside air cavity is filled with inert gas.
- the pressure-tight closed by the outside air cavity comprises a reservoir formed as a mixer.
- the conveyed materials are waste and / or residues and the conveyor line opens into the pressure zone of a shaft furnace for crude steel production.
- Fig. 1 shows a schematic diagram of a first embodiment.
- Fig. 2 shows a schematic diagram of a second embodiment.
- Fig. 3 shows a schematic diagram of a third embodiment.
- Fig. 4 shows a schematic diagram of a fourth embodiment.
- the reference numerals denote the following:
- the material 1 discharged from a storage container 2 is conveyed by means of one or more screw conveyors 3 to a transfer space 4 and from this using a further screw conveyor 5 through a lance 6 formed as a pipe through an opening in the furnace wall 7.1 brought into the oven room 7.
- Reservoir and conveyor line are completed by the outside air and are at least under the same high air pressure (or gas pressure) p1 as the pressure level p2 in the oven chamber. 7
- the screw conveyors 3, 5 divide the flow of material 1 in the feed train into small batches, which are each arranged between two screw flights and push them forward in the conveying direction. There is no compression of the material, because unlike a pressurized promotion in a pressure tube no strand occurs in which over a considerable distance each rear material lying front material against the friction on pipe walls must continue to push.
- the storage container 2 or a pump which can be used instead can thus also be placed far away from the reaction furnace in which the material is to be conveyed. This space problems in the vicinity of the reaction furnace can be avoided.
- the non-operating mechanical conveyors according to the invention can be very well conveyed through a conveyor line which is based on conveying air. whole.
- a conveyor line which is based on conveying air. whole.
- back pressure, lack of space, burning behavior it is most advantageous if the cross-sectional area of the designated as lance 6 tube, which leads through the furnace wall 7.1 into the furnace chamber 7, is as small as possible. This is there compared to the other production line a much higher speed of the moving granular material required. Therefore, and also for reasons of space and for the reasons prevailing in such areas heat, it is advantageous in such lances 6 at least not by means of mechanical conveyor alone to move, but at least supported by conveying air.
- the conveying air is that which is supplied by the pumps 21 and 22 to the conveyor line and ultimately flows off through the lance 6 to the pressure level p 2 in the oven chamber 7. Due to the space conditions, the high furnace pressure and the high temperature prevailing at the point of introduction, this type of introduction is particularly advantageous for the supply of fuel or reaction material into the pressure zone of a shaft furnace for crude steel production.
- a screw conveyor 5 which is adapted in diameter to the inner diameter of the lance 6, used to material from the conveying area with a larger cross-sectional area in the lance, which has a comparatively very small flow cross-section to contribute. Due to their small diameter, the screw conveyor 5 must rotate relatively quickly. The problematic filling of the helical interspaces with the material to be delivered at high screw speeds due to centrifugal force is substantially improved by the flow of air from the pressure region p1 in the delivery channel into the pressure region p2 in the furnace. If the lance 6 is just straight, needs to be promoted by means of the screw conveyor 5 only in its initial region into it.
- a blast wheel 15 (FIG. 3) can also be used as the pressure-free mechanical conveyor.
- motor-driven fast-rotating, equipped with blades or similar on the circumference protruding parts wheel the flow of material to be conveyed is introduced and divided by the blades or similar parts into small, separate batches and thrown by centrifugal force.
- the embodiment according to FIG. 2 differs from that according to FIG. 1 in that a flexible screw conveyor 13 is arranged in front of the last screw conveyor 5, which conveys into the lance 6 assisted by an air flow.
- This consists of a flexible shaftless auger and a surrounding hose.
- Such an embodiment is advantageous over a rigid embodiment, since it allows the maintenance work often required at the point of introduction into the furnace to be carried out more rapidly.
- Fig. 2 is symbolized by the dashed lines indicated compressed air line 24 that the conveying air can be fed either directly to the lance the conveyor line, or even at the beginning of the flexible section of the conveyor line.
- the flexible screw section can also be realized by a hose alone, without conveyor screw disposed therein.
- Fig. 3 a variant of the invention is outlined, in which the supply from the outside with the pressure p ⁇ in the delivery area p1 not by means of a reservoir to be filled discontinuously 2, but continuously or quasi-continuously by means of a sufficiently pressure-tight pump 12. Pumps for such applications are available, for example, under the name solid piston pump.
- the material to be delivered passes through a hose to a trained in this example as a blast wheel 15, non-pressure working mechanical conveyor.
- This, motor driven fast rotating, equipped with blades or similar on the circumference protruding parts wheel divides the optionally formed by the pressure of the pump 12 strand of material back into small, separate batches and hurls them into the lance 6, through which they in enter the oven room 7.
- the movement of the material into and through the lance 6 is in turn assisted by an air flow which can be generated by pressing air or gas into the conveyor string before starting the lance 6 by means of a pump 27.
- further mechanical conveyors could be installed between the pump and the point of introduction to the furnace.
- Fig. 4 it is illustrated that it is not excluded in that conveyor line, which is closed by the outside air to promote by means of partial sections 8 material also by means of conveying air.
- a promotion means of conveying air Preferably, for branch-free and straight sections can be a pneumatic promotion, so set up a promotion means of conveying air.
- conveying air after the end of such routes 8 again by means of a pump 26 are sucked.
- the introduction of the material into the furnace chamber can also take place without conveying air.
- the inventive method and the device according to the invention are particularly advantageous for the introduction of granular, dry or wet waste and residues applicable in ovens, as exactly these substances or mixtures are subject in their consistency strong, often difficult to predict fluctuations of those physical properties "Flowability” and “eligibility” influence and because the inventive method and the device of the invention extremely robust against such fluctuations works.
- furnaces for cement production and blast furnaces are particularly important for the crude steel production.
- waste and residues can be burned profitably and environmentally friendly with the additional effect of saving fossil fuels.
- the method according to the invention and by the device according to the invention more and more different waste and residues can be supplied to this use under economic conditions.
- the robustness of the function of the method according to the invention or of the device according to the invention is particularly effective.
- the storage container 2 may itself be designed as a rotating, correspondingly sealed against outside air, possibly under overpressure drum mixer and / or include a stirrer.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Furnace Charging Or Discharging (AREA)
- Nozzles (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008026835A DE102008026835A1 (en) | 2008-06-05 | 2008-06-05 | Conveyable material e.g. foam particle feeding method for shaft furnace in cement production, involves conveying air or gas into starting region of lance through mechanical conveyor operating at zero pressure |
DE200810026836 DE102008026836B4 (en) | 2008-06-05 | 2008-06-05 | Method and device for conveying material through a furnace wall |
PCT/EP2009/004061 WO2009146935A2 (en) | 2008-06-05 | 2009-06-05 | Method and device for feeding conveyable materials to reaction furnaces |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2297519A2 true EP2297519A2 (en) | 2011-03-23 |
EP2297519B1 EP2297519B1 (en) | 2014-05-07 |
Family
ID=41045090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09757318.2A Active EP2297519B1 (en) | 2008-06-05 | 2009-06-05 | Method and device for feeding conveyable materials to reaction furnaces |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2297519B1 (en) |
CN (1) | CN102159889B (en) |
WO (1) | WO2009146935A2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT510896B1 (en) * | 2009-01-15 | 2013-08-15 | Kurt Himmelfreundpointner | METHOD AND DEVICE FOR PROMOTING ELIGIBLE MATERIALS |
CN102433146A (en) * | 2011-11-01 | 2012-05-02 | 中冶焦耐(大连)工程技术有限公司 | Novel tar residue adding process adopting screw conveying system |
FI124217B (en) * | 2012-08-27 | 2014-05-15 | Outotec Oyj | ARRANGEMENTS FOR SUPPLYING A GRINDING SUBSTANCE TO A SUSPENSION FROZEN OVEN OR A STONE BURNER |
CN103062786B (en) * | 2013-01-25 | 2015-05-20 | 福建永恒能源管理有限公司 | Novel pulverized coal metered pneumatic storage system |
CN104670917B (en) * | 2015-01-29 | 2018-04-27 | 成都绿迪科技有限公司 | A kind of automatic air pressure proportioner |
US20170226656A1 (en) * | 2016-02-10 | 2017-08-10 | Ebara Corporation | Apparatus and method for supplying plating solution to plating tank, plating system, powder container, and plating method |
ES2819003T3 (en) * | 2016-12-20 | 2021-04-14 | Aduro As | A combi stove and use of a combi stove |
EP3434632A1 (en) * | 2017-07-25 | 2019-01-30 | Knauf PFT GmbH & Co. KG | Device and method for conveying material consisting predominantly of solid particles, in particular powder material, for example dry mortar |
CN108534165B (en) * | 2018-03-27 | 2020-08-28 | 上海金联热电有限公司 | Feeding device and boiler combustion system with same |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN85200148U (en) * | 1985-04-01 | 1986-02-19 | 南京工学院 | Continously stabilized high-density coal powder feeder working at pressure |
AT388176B (en) * | 1987-07-30 | 1989-05-10 | Voest Alpine Ag | METHOD AND PLANT FOR THE PRODUCTION OF LIQUID RAW IRON OR STEEL PRE-PRODUCTS FROM LIQUID, IRON OXIDE-CONTAINING MATERIALS |
DE4338161C2 (en) * | 1993-11-02 | 1996-05-30 | Ver Energiewerke Ag | Process for drying mine-moist, pre-broken raw lignite and their pneumatic conveying into a fluidized bed furnace |
DE20100783U1 (en) * | 2001-01-17 | 2001-03-29 | Wilhelm Mueller, Maschinenfabrik Gmbh & Co. Kg | Device for dosing and conveying bulk goods |
CN2685292Y (en) * | 2003-11-06 | 2005-03-16 | 江苏正昌集团有限公司 | Viscous materials conveyer |
AT413821B (en) * | 2004-12-23 | 2006-06-15 | Voest Alpine Ind Anlagen | Process and assembly to convert cold iron particles into molten metal by pneumatic transport to crucible |
AT502048B1 (en) * | 2005-09-28 | 2007-01-15 | Himmelfreundpointner Kurt | Processing plant e.g. combustion furnace, charging method, involves introducing flowing process material into processing plant via conveyor line under pressure, and mixing flowing process material before its pressurization |
WO2007115345A1 (en) * | 2006-04-11 | 2007-10-18 | Niederer Hermann Jun | Centrifugal ejector |
-
2009
- 2009-06-05 EP EP09757318.2A patent/EP2297519B1/en active Active
- 2009-06-05 CN CN200980129113.9A patent/CN102159889B/en not_active Expired - Fee Related
- 2009-06-05 WO PCT/EP2009/004061 patent/WO2009146935A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009146935A3 * |
Also Published As
Publication number | Publication date |
---|---|
CN102159889B (en) | 2013-10-30 |
EP2297519B1 (en) | 2014-05-07 |
CN102159889A (en) | 2011-08-17 |
WO2009146935A2 (en) | 2009-12-10 |
WO2009146935A3 (en) | 2011-12-29 |
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