WO2019016429A1 - Cône de soutirage - Google Patents

Cône de soutirage Download PDF

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Publication number
WO2019016429A1
WO2019016429A1 PCT/FI2017/050550 FI2017050550W WO2019016429A1 WO 2019016429 A1 WO2019016429 A1 WO 2019016429A1 FI 2017050550 W FI2017050550 W FI 2017050550W WO 2019016429 A1 WO2019016429 A1 WO 2019016429A1
Authority
WO
WIPO (PCT)
Prior art keywords
drawdown
cone
sub
rooftop
drawdown cone
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.)
Ceased
Application number
PCT/FI2017/050550
Other languages
English (en)
Inventor
Lucas Pope
Bryce DEGELMAN
Erin SACKMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Outotec Finland Oy
Original Assignee
Outotec Finland Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Outotec Finland Oy filed Critical Outotec Finland Oy
Priority to PCT/FI2017/050550 priority Critical patent/WO2019016429A1/fr
Publication of WO2019016429A1 publication Critical patent/WO2019016429A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F23J3/06—Systems for accumulating residues from different parts of furnace plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00—Fluidised bed combustion apparatus
    • F23C10/18—Details; Accessories
    • F23C10/24—Devices for removal of material from the bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2206/00—Fluidised bed combustion
    • F23C2206/10—Circulating fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/10004—Adding inert bed material to maintain proper fluidized bed inventory

Definitions

  • the present invention relates to a drawdown cone for granular material, specifically sand.
  • a drawdown cone is provided, with a convergent housing, a main material inlet on a top side of the drawdown cone and a main material outlet on a bottom side of the drawdown cone.
  • the main material outlet is smaller than the main material inlet, meaning it has a smaller area, a smaller diameter and/or a smaller width than the main material inlet.
  • the housing is converging from the top side to the bottom side.
  • top side and bottom side refer to the normal use of the drawdown cone, where the cone is oriented with the bottom side towards the earth's center of mass.
  • the main axis of the drawdown cone which leads from the center of the main material inlet to the center of the main material outlet, is oriented parallel to the gravitational field. Therefore, the granular material in the drawdown cone travels from the main material inlet towards the main material outlet due to the gravitational force.
  • Drawdown cones are for example used in fluidized bed combustion and/or gasification systems, to drawdown the bed of sand in order to clean and recycle the sand back into the reactor.
  • rat holing can occur. This means that the granular material directly above the main material outlet will move towards the main material outlet with a higher speed of travel than the granular material near the edge of the drawdown cone, forming a sink over the main material outlet.
  • a drawdown cone according to claim 1, with a convergent housing, a main material inlet on a top side of the drawdown cone and a main material outlet on a bottom side of the drawdown cone.
  • at least one rooftop-shaped divider is arranged inside the drawdown cone, dividing the drawdown cone into at least two sub-sections.
  • the granular material travelling through the drawdown cone gets redirected, leading to a more homogeneous distribution of the travelling speeds of the granular material. It is especially possible to avoid dead areas, where the granular material does not move at all or only with a very low speed. Hence the formation of plugs due to the build-up of tramp or inert material is avoided.
  • the at least one rooftop-shaped divider has a top edge facing the material inlet and at least one bottom edge, facing towards the material outlet and/or away from the main material inlet.
  • the rooftop-shaped divider has a constant slope.
  • the slope of the rooftop-shaped divider can also increase from the top edge to the bottom edge, leading to a streamlined form.
  • the slope of the rooftop- shaped divider can also decrease from the top edge to the bottom edge or be a combination of increasing, decreasing and/or constant parts.
  • the rooftop-shaped divider can be arranged symmetrical to the main axis of the drawdown cone or be tilted with respect to the main axis. By selecting the appropriate form and orientation, the rooftop- shaped divider can be adapted to the used grain material, drawdown speeds and other parameters of the facility.
  • the rooftop-shaped divider comprises two wings joined together at the top edge.
  • the profile of the rooftop- shaped divider can be that of an upside-down letter V, where the two wings are constructed as flat plates.
  • the angle a between the two wings should preferably be smaller than 106°, preferably between 30° and 106°, more preferably between 50° and 90°, more preferably about 70°.
  • an angle of 106° corresponds to a slope Y of the rooftop-shaped divider with regard to the horizontal of 37°, which is the angle of repose of sand. Hence, sand or similar material will not plug the drawdown cone.
  • the slope of the rooftop-shaped divider is 55° with regard to the horizontal, which is well above the angle of repose of sand, thereby ensuring that no plugs occur.
  • the at least one rooftop-shaped divider comprises two rooftop-shaped dividers that are arranged perpendicular to each other and intersect directly above the main material outlet, dividing the drawdown cone in four sub-sections or quadrants.
  • "Directly above the main material outlet”, in the sense of the present invention, means that the intersection lies between the main material outlet on the bottom side and the main material inlet on the topside of the drawdown cone.
  • the intersection point of the top edges of the two rooftop-shaped dividers lies on the main axis from the center of the main material inlet to the center of the main material outlet.
  • the rooftop-shaped dividers redirect the grain material away from the point directly above the main material outlet, where rat-holing would appear. Hence, the division of the drawdown cone prevents one big rat hole from forming in the center by drawing the sand equally from each quadrant of the drawdown cone .
  • the rooftop shaped divider has a larger width than the main material outlet. In that case, no direct path exists between the main material inlet and the main material outlet. Therefore, all of the grain material has to travel sideways at some point in the drawdown cone, which avoids rat-holing at the edge of the rooftop-shaped dividers and leads to a more even drawdown of the grain material.
  • a sub-cone is formed in the at least one sub-section or quadrant by part of the wall of the convergent housing and/or parts of the at least one rooftop-shaped divider.
  • the length of the wings of the rooftop-shaped divider, from the top edge to the bottom edge, is such that a gap remains between the bottom edge and the housing. Therefore, the sub-cone comprises a sub-outlet, formed by the at least one bottom edge of the rooftop-shaped divider.
  • the drawdown cone has a square base and thus has the form of a pyramidal frustum.
  • a drawdown cone can be easily manufactured out of flat metal plates.
  • the sub-cones formed in the four quadrants also have the form of pyramidal frustums, which are smaller versions of the main cone.
  • the at least one rooftop-shaped divider comprises two more rooftop-shaped dividers that are arranged perpendicular to each other, intersecting directly over the sub-outlet of the sub-cone formed in at least one quadrant.
  • additional rooftop-shaped dividers therefore further divide the respective quadrant in even smaller sub-sections.
  • the additional dividers act in the same way for the sub-cone as the main dividers intersecting above the main material outlet do for the whole drawdown cone. Hence, the additional dividers prevent a rat-hole from forming in the center of the quadrant over the sub-outlet by drawing the sand equally from each smaller sub-section of the quadrant .
  • the additional rooftop shaped dividers have a larger width than the sub-outlet in order to avoid rat-holing at the edge of the additional rooftop-shaped dividers.
  • sub-cones are formed by part of the wall of the housing and/or parts of the main and additional rooftop-shaped dividers.
  • the top edge of the additional rooftop shaped dividers lies in the same plane as the top edge of the main dividers.
  • the drawdown of the bed of grain material acts like it has sixteen small cones underneath it instead of one big one. That is basically the case, but the sixteen small cones are within four bigger cones which are within one big cone. This means, the drawdown cone has one easy manageable outlet for sixteen cones worth of bed drawdown.
  • the length of the wings of the additional rooftop-shaped dividers is smaller than the length of the wings of the main rooftop-shaped dividers.
  • the sub-outlets of the even smaller sub-cones lie on a different level than the sub-outlets of the quadrants, forming multiple stages of cones inside the drawdown cone.
  • This principle can be repeated for even more stages by further dividing the sub-sections in smaller sub-sections by additional rooftop-shaped dividers.
  • the principle works best for decreasing sizes of the rooftop-shaped dividers. Thereby, the drawdown cone can be divided down to subsections of the desired size. While more and thus smaller sub ⁇ sections lead to a more homogeneous drawdown of the granular material, the subsections must be large enough that tramp material can pass the drawdown cone without causing a plug.
  • the rooftop-shaped dividers divide the drawdown cone in sub-sections that are larger than 10" (0.254 m) x 10" (0.254m) and smaller than 30" (0.762 m) x 30" (0.762 m) , preferably larger than 15" (0.381 m) x 15" (0.381m) and smaller than 25" (0.635 m) x 25" (0.635 m) , more preferably about 20" (0.508 m) x 20" (0.508 m) .
  • “About” is to be understood as with normal technical deviations, for example pius or minus 5 ⁇ 6. These sizes are small enough to minimize dead areas where no drawdown of the grain materials occurs.
  • the size may be chosen so as to integrate into a combustion system or a gasification system.
  • the dividers may divide the drawdown cone in subsections of 24" (0,610 m) x 24" (0,610 m) .
  • the sub- outlets are larger than 4" (0.102 m) x 4" (0.102 m) and smaller than 10" (0.254 m) x 10" (0.254 m) , preferably larger than 6" (0.152 m) x 6" (0.152 m) and smaller than 10" (0.254 m) x 10" (0.254 m) , more preferably about 8" (0.203m) x 8" (0.203 m) .
  • sub-outlets sized 8" (0.203 m) x 8" (0.203 m) there is a minimum clearance distance of 6" (0.152 m) , which is enough room to handle any tramp material smaller than 4" (0.102 m) .
  • the sub-outlets may have the same size in every stage. This is especially beneficial in ensuring a large enough clearance to pass tramp or inert materials, and, at the same time, ensuring a small enough clearance to be able to control the process accurately.
  • the sub-outlets in different stages may also have different sizes. This may be especially advantageous in achieving different flow effects of the materials.
  • the opening angle ⁇ of the convergent housing is smaller than 106°, preferably between 30° and 106°, more preferably between 50° and 90°, more preferably about 70°.
  • the slope ⁇ of the drawdown cone with regard to the horizontal is larger than the angle of repose of sand of 37°.
  • sand or similar material will not plug the drawdown cone.
  • An opening angle ⁇ of 70° leads to a slope of the drawdown cone of 55°. In the case of a square drawdown cone, this results in a 45° valley angle in the corners of the cone.
  • the valley angle is well above the 37° needed for the sand to smoothly travel through the drawdown cone, thereby avoiding the formation of plugs in the cone corners.
  • the angle ⁇ of the divider has a relationship to the slope ⁇ of the rooftop- shaped divider in the following manner: ⁇
  • the opening angle a of the convergent housing is the same as the angle ⁇ between the two wings of the rooftop- shaped dividers.
  • the slope of the different parts of the drawdown cone is uniform throughout the entire cone, leading to a homogeneous drawdown of the grain material.
  • at least one ram device is mounted inside the drawdown cone, such that it can be moved in and out of at least one sub-outlet.
  • the ram device can poke into one of the sub-outlets of the sub-cones to break up potential plugs.
  • the ram device is a swinging ram device, which is axially mounted inside the drawdown cone, such that it can be rotated in and out of the sub-outlets.
  • the ram device may be operated manually.
  • the ram device may be operated automatically, for example by a pneumatic or hydraulic cylinder, or by a motor, such an electric motor .
  • the housing of the drawdown cone comprises a feedthrough, wherein the ram device passes through that feedthrough.
  • the ram device has a standby position, in which it is completely concealed under one of the rooftop-shaped dividers. This means that there is no line of sight between the ram device and the main material inlet, such that during normal operation, the grain material does not directly pass the ram device. The ram device does thus not form an obstacle for the grain material, when in the stand-by position.
  • the housing comprises a door for accessing the drawdown cone. Via said door the drawdown cone can be accessed for inspection and maintenance purposes.
  • coolant medium is arranged to be introduced into the drawdown cone via inlets arranged into the housing, and removed via outlets arranged into the housing.
  • the design is such that the drawdown cone 1 will only fill to 50 % of its total volume with the granular material, and the remaining 50 % of the volume of the drawdown cone 1 is void.
  • Coolant medium for example air or other gas
  • void a total volume of pockets or such sub-volumes of the drawdown cone 1 that are not filled with the granular material. It is therefore to be understood that the drawdown cone 1 may comprise several such voids, and at the same time several areas of the total volume filled with the granular material in-between the voids.
  • inventions described herein may be used in any combination with each other. Several of the embodiments may be combined together to form a further embodiment of the invention.
  • An apparatus, to which the invention is related, may comprise at least one of the embodiments of the invention described herein.
  • Fig. 1 shows an isometric view of the inventive drawdown cone
  • Fig. 2 shows an isometric view of the drawdown cone in a slightly different angle
  • Fig. 3 shows a top view of the isometric drawdown cone
  • Fig. 4 shows a simplified sectional view of the inventive drawdown cone
  • Fig. 5 shows another sectional view of the inventive drawdown cone
  • Fig. 6 shows another sectional view of the inventive drawdown cone
  • Fig. 7 shows another simplified sectional view of the inventive drawdown cone.
  • Figures 1 to 3 show the inventive drawdown cone 1, which has the main form of a square frustum.
  • the drawdown cone 1 comprises a converging housing 2, which in turn comprises four side walls 2a.
  • the drawdown cone 1 comprises a main material inlet 3, which has the form of a square.
  • the drawdown cone 1 further comprises a door 12 in its housing 2 for accessing the drawdown cone 1.
  • the principle function of the drawdown cone 1 is that the grain material, for example sand, enters the drawdown cone 1 through the main material inlet 3, travels through the drawdown cone 1 and exits through the main material outlet 4, which is smaller than the main material inlet 3.
  • the drawdown cone 1 comprises several dividers 5, 6, which divide the drawdown cone 1, and especially the main material inlet 3 of the drawdown cone 1, into several sub-sections.
  • the drawdown cone 1 comprises two main dividers
  • the two main dividers 5 intersect in the center of the main material inlet 3 directly above the main material outlet 4, thereby dividing the drawdown cone 1 into four approximately identical sub-sections called quadrants.
  • the drawdown cone 1 further comprises two small dividers 6 in every quadrant, which are arranged perpendicular to each other and which further divide the drawdown cone 1 into in total sixteen smaller sub-sections (four sub-sections per quadrant) .
  • the sidewalls of the housing 2 together with the main dividers 5 form a medium-sized cone with a sub-inlet, corresponding to one fourth of the main material inlet 3 of the drawdown cone 1.
  • the medium-sized cones formed in each quadrant further comprise a sub-outlet 9 defined by the bottom edges 8 of the main dividers 5.
  • the sub-outlet 9 is not visible in Fig. 2 since the two small dividers 6 are arranged directly above the sub- outlet 9 of the quadrant and have a larger with than the sub-outlet 9.
  • the two small dividers 6 in every quadrant intersect directly above the sub-outlet 9 of the medium-sized cone formed in the respective quadrant.
  • the small dividers 6 in the quadrant further divide each quadrant into four smaller sub-sections, such that the drawdown cone 1 is equally divided into sixteen sub-sections.
  • the dividers 5, 6 and/or the side walls of the housing 2 form small cones with a sub-inlet corresponding to one sixteenth of the main material inlet 3 and a sub-outlet 10 facing towards the main material outlet 4.
  • the drawdown cone 1 may also comprise field adjustment caps 51 arranged to receive temperature probes (not shown in the figures) that can be passed through holes 51a arranged into the field adjustment caps 51 for monitoring the temperature of the material passing through the drawdown cone 1.
  • the field adjustment caps 51 may be placed in other positions as well, and they may be used to receive other measurement equipment besides temperature probes, as well.
  • the drawdown cone 1 may also comprise additional holes inside its structure for enabling access and inspection of the drawdown cone 1 while out of operation (not shown in the figures) . These holes do not have contact with the material treated in the drawdown cone 1.
  • the drawdown cone 1 may further comprise inlets 52a and outlets 52b arranged into the housing 2.
  • the inlets 52a and outlets 52b may be utilized in cooling the material handled in the drawdown cone 1.
  • a coolant medium such as air or other suitable gas, may be introduced into a void volume or void volumes within the housing 2 as infeed via the inlets 52a, using any suitable conduits, such as pipes or tubes, arranged to run via the inlets 52a.
  • removal of the coolant medium as an outfeed may be arranged via the outlets 52b in the same manner.
  • the size and/or location within the housing 2 of the inlets 52a and outlets 52b may vary depending on the type of coolant medium and/or the amount of cooling capacity required. In figure 1, an embodiment of such an arrangement is shown.
  • the infeed and/or outfeed of the coolant medium is preferably achieved by pumping or compressing cool air or other gas into the inlets.
  • the coolant medium may be removed by venting and/or recycling the coolant medium in a safe and/or controlled manner out of the system.
  • the dividers 5, 6 are rooftop-shaped. Specifically, they have a profile, formed like an upside-down letter V, with two wings 11 joined together at an upper edge 7 facing the main material inlet 3 and with their bottom edges 8 facing towards the main material outlet 4.
  • the angle a between the two wings 11 of the rooftop-shaped dividers 5, 6 is approximately identical to the opening angle ⁇ of the drawdown cone 1.
  • the slope of the rooftop-shaped dividers 5, 6 is the same as that of the exterior wall of the main cone.
  • the wings 11 of the small dividers 6 are smaller than the wings 11 of the main dividers 5, meaning that they do not extend as far towards the main material outlet as the wings 11 of the main dividers 5.
  • the bottom edge 8 of the main dividers 5 lies on a different level or height than the bottom edge 8 of the small dividers. Therefore, the sub- outlet of the medium sized cones in every quadrant lies on a different level or height than the sub- outlets 10 of the small cones in the sixteen sub ⁇ sections.
  • the drawdown cone 1 comprises three stages of cones, wherein the size of the cones increases from the topside to the bottom side.
  • the first stage is constituted by the sixteen small cones .
  • the second stage is formed by the four medium- sized cones, with always four sub-outlets 10 of the small cones leading into every one of the four medium-sized cones of the second stage.
  • the sub- outlets 9 of the medium sized cones of the second stage in turn lead to the lower part of the housing 2 as the main cone and hence back together towards the main material outlet 4.
  • angles a of the rooftop-shaped dividers 5, 6 are approximately identical to the opening angle ⁇ of the drawdown cone 1, the four medium-sized cones formed in each quadrant and the sixteen small cones formed in each sub-section are symmetrical and geometrically similar to the drawdown cone 1 as a whole.
  • grain material for example sand or the like
  • enters the drawdown cone 1 depending on its position, it enters into one of the small cones of the first stage and travels through the small cone towards the sub-outlet 10 of that cone. It leaves the small cone and thereby the first stage through that sub-outlet 10 and reaches a medium-sized cone of the second stage.
  • the sand of four sub-sections of the first stage flows together into one quadrant of the second stage and moves towards the sub-outlet 9 of the medium-sized cone formed in the respective quadrant.
  • the sand then leaves the second stage through the sub-outlet 9 of the medium-sized cone of the second stage and reaches the lowest part of the drawdown cone 1, where all the sand from every sub ⁇ section is merged together again, and finally leaves the drawdown cone 1 through the main material outlet 4.
  • three swinging ram devices 20 are axially and pivotably mounted inside the drawdown cone 1.
  • the ram devices 20 each comprise a main rod 21, which is pivotably mounted on one side of the housing 2 and mounted on the opposite side in a feedthrough 22 of the housing 2, such that the main rod 21 passes through the feedthrough 22 to the outside of the drawdown cone 1.
  • the main rod 21 can be actuated from the outside, when the drawdown cone 1 is in use and for example filled with sand.
  • the ram device 20 may further comprise arms 23 protruding from the main rod 21 that can poke in and out of at least one sub-outlet 9, 10, when the ram device 20 is pivoted.
  • the ram device 20 may be operated either manually or automatically.
  • a first ram device 20 is depicted in Fig. 5 which is arranged in the center of the drawdown cone 1 directly above the main material outlet 4.
  • This ram device 20 has two protruding arms 23 that can poke in the sub-outlets 9 of the second stage cones.
  • the first ram device 20 is concealed below one of the main dividers 5 when in a standby position .
  • the two protruding arms 23 each poke in a sub-outlet 9 of one of the quadrants breaking up the potential plugs in the two sub-outlets 9 at once.
  • the ram device 20 is pivoted in the opposite direction, whereby the two protruding arms 23 poke into the sub- outlets 9 of the other two quadrants.
  • Fig. 6 shows one of the two further ram devices 20 that are arranged such that they pass through the center of the four quadrants directly above the sub- outlets 9 of the medium-sized cones formed in the quadrants.
  • the two further ram devices 20 preferably each comprise four protruding arms 23, which are shorter than the two protruding arms 23 of the center ram device 20 and that can poke in the sub-outlets 10 of the small cones formed in each sub-section of the first stage.
  • the further ram devices 20 are completely concealed under the small dividers, when they are in their stand-by positions.
  • the right ram device 20 shown in Fig. 6 is depicted in its stand-by position.
  • the four protruding arms 23 of the further ram devices 20 can each poke in one sub-outlet 10 of the small cones formed in each sub-section, thereby breaking up potential plugs in four sub-outlets at once.
  • the left ram device 20 shown in Fig. 7 is depicted in a position, where it pokes the sub-outlet 10.
  • the four protruding arms poke into the sub-outlets 10 of the small cones of four more sub-sections on the other side of the ram device 20.
  • inventive drawdown cone provides for a homogeneous drawdown of the grain material, while avoiding plugs inside the drawdown cone.
  • inventive drawdown cone further provides means for breaking up potential plugs in the drawdown cone, reducing the need to shut down the facility for cleaning purposes .
  • the high-temperature granular material can be efficiently cooled down to improve the manageability of the material to be treated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)

Abstract

La présente invention concerne un cône de soutirage (1) ayant un boîtier convergent (2) comprenant une entrée principale de matière (3) sur un côté supérieur du cône de soutirage (1) et une sortie principale de matière (4) sur un côté inférieur du cône de soutirage (1). Au moins un diviseur en forme de toit (5, 6) est agencé à l'intérieur du cône de soutirage (1), divisant le cône de soutirage (1) en au moins deux sous-sections.
PCT/FI2017/050550 2017-07-21 2017-07-21 Cône de soutirage Ceased WO2019016429A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/FI2017/050550 WO2019016429A1 (fr) 2017-07-21 2017-07-21 Cône de soutirage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2017/050550 WO2019016429A1 (fr) 2017-07-21 2017-07-21 Cône de soutirage

Publications (1)

Publication Number Publication Date
WO2019016429A1 true WO2019016429A1 (fr) 2019-01-24

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PCT/FI2017/050550 Ceased WO2019016429A1 (fr) 2017-07-21 2017-07-21 Cône de soutirage

Country Status (1)

Country Link
WO (1) WO2019016429A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1278358A (en) * 1968-10-29 1972-06-21 Buehler Ag Geb Improvements in or relating to storage bins or ducts
US3985244A (en) * 1973-11-09 1976-10-12 Schwabische Huttenwerke Gesellschaft Mit Beschrankter Haftung Silo, or bin, for flowable solid material
JP2006242454A (ja) * 2005-03-02 2006-09-14 Babcock Hitachi Kk 流動床炉
CN106287689A (zh) * 2016-08-05 2017-01-04 北京热华能源科技有限公司 外循环物料提升分配系统及应用的多流程循环流化床锅炉

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1278358A (en) * 1968-10-29 1972-06-21 Buehler Ag Geb Improvements in or relating to storage bins or ducts
US3985244A (en) * 1973-11-09 1976-10-12 Schwabische Huttenwerke Gesellschaft Mit Beschrankter Haftung Silo, or bin, for flowable solid material
JP2006242454A (ja) * 2005-03-02 2006-09-14 Babcock Hitachi Kk 流動床炉
CN106287689A (zh) * 2016-08-05 2017-01-04 北京热华能源科技有限公司 外循环物料提升分配系统及应用的多流程循环流化床锅炉

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