EP2690363A2 - Installation et procédé pour charger un poêle - Google Patents

Installation et procédé pour charger un poêle Download PDF

Info

Publication number: EP2690363A2
Authority: EP; European Patent Office
Prior art keywords: suction; switching unit; line; stub; central
Prior art date: 2012-07-23
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

Application number

EP13177398.8A

Other languages

German (de)

English (en)

Other versions

EP2690363A3 (fr

EP2690363B1 (fr

Inventor

Johann Kalkgruber

Johann Grossauer

Johann Hinterplattner

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.)

SOLARFOCUS HOLDING GmbH

Original Assignee

SOLARFOCUS HOLDING GmbH

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.)

2012-07-23

Filing date

2013-07-22

Publication date

2014-01-29

2013-07-22 Application filed by SOLARFOCUS HOLDING GmbH filed Critical SOLARFOCUS HOLDING GmbH

2014-01-29 Publication of EP2690363A2 publication Critical patent/EP2690363A2/fr

2017-12-20 Publication of EP2690363A3 publication Critical patent/EP2690363A3/fr

2019-04-03 Application granted granted Critical

2019-04-03 Publication of EP2690363B1 publication Critical patent/EP2690363B1/fr

Status Active legal-status Critical Current

2033-07-22 Anticipated expiration legal-status Critical

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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

Definitions

the invention relates to a system for charging a furnace with particulate or powdered fuels and a method for operating this system.
a generic system shows the AT 507 742 B1 ,
the in the AT 507 742 B1 described plant is used for storing, conveying and heating fuel pellets.
the pellets are stored as bulk material in a storage room. From there they are conveyed via a pneumatic conveying line to the furnace or a buffer located in front of it.
the pneumatic conveying line comprises several suction probes, a switching unit, a suction turbine, a solids separator and a system of pipe or hose lines.
the suction probes are used to introduce pellets from the storage room into a suction line. They are arranged at the bottom of the storage room and supplied with one supply air stub and one suction stub. At a suction probe air flows from the connected supply air stub line into the storage room and from there into the suction stub connected to the suction probe. The air entrains pellets from the storage room into the suction stub pipe.
the switching unit which is attached as close as possible to the storage room, for example on the wall of the storage room, selectable from the plurality of stubs only a single supply air stub is connected to the only existing central line for supply air, and only a single suction stub with the only existing central suction line.
the central supply air line and the central suction line form the further connection of the switching unit with the solids separator for the pellets from the suction air flow and with the suction turbine driving the air flow.
the affected suction stub line is separated from the central suction line and connected to the central air supply line.
the associated supply air spur line can also be separated from the central supply air line and connected to the central suction line.
the problem underlying the invention is to improve a generic system for the pneumatic conveying of pellets from a storage room so that blockages in the central suction line can be reliably fixed automatically.
the free flow path leads to a connection of the switching unit, which can be connected to the central supply air line and a blockage is connected with it for rectification.
the suction turbine driving the air flow in the delivery area then acts from both sides of the blocked area.
the free flow path as an opening into the ambient air (possibly after an open line piece).
the switching unit can thus be built slightly easier.
a suction stub 3 and a supply air stub 9 leads to the switching unit 4, which is typically arranged on the outside of the wall of the pellet storage space 1.
the suction-side part 4.1 of the switching unit 4 has a displaceable connection part 4.3, to which the central suction line 5 is connected, which leads from the connection part 4.3 to the inlet connection of the solids separator 7.
the solid output of the solids separator 7 leads over a short further conveyor line to the furnace 11.
the fluid outlet of the solids separator 7 is connected via the central supply air line 8 to the displaceable connection part 4.4 on the supply-side connection part 4.2 of the switching unit 4.
the air flow is driven by a suction turbine 6, which acts directly on the air flow in the supply air line 8.
the solids separator 7 which may typically be a cyclone separator
the solids ie the pellets
the air is drawn via the overhead fluid outlet of the Feststoffabscheiders in the central supply air line 8 and flows back through this and through the suction turbine 6 and the supply-side 4.2 of the switching unit 4 and the supply air stub 9 back to said suction probe in the storage room 1.
a controller monitors whether actually fuels are being transported or whether no to be pumped on the said suction probe Fuels are sucked more, or if there is a blockage.
Umschaltüen 4 There are many possible designs for Umschaltüen 4.
the invention is in principle applicable to all types of Umschaltikien, provided that these Umschaltikien are capable of mechanically (- for example, electrically, hydraulically or pneumatically -) driven a pipe or hose with one another To connect pipe or hose from a selection of several pipe or hose lines or to separate such a connection.
the switching unit 4 may have a perforated by many holes surface, wherein on each side of the surface at each hole a stub 3, 9 is fixedly connected and wherein on the other side two displaceable, funnel-like connecting parts 4.3, 4.4 are attached, which are fixedly connected to the central lines 5, 8 and are mounted mechanically displaceable on the perforated surface by drilling, that they each cover one of the holes and thereby connect this hole with one of the central lines 5, 8.
a switching unit may be a piping system branching in several stages be constructed, at each fork a mechanically actuated valve, for example, a pivotable by means of electromagnet flap, sits, by which a bus line branch can be connected to a stub branch of the next lower level or can be separated from it.
a mechanically actuated valve for example, a pivotable by means of electromagnet flap
the blockage is detected by the central controller, for example, based on the current consumption of the suction turbine 6.
the blockage is only in the in-service suction stub 3, it can be remedied by back-blowing as discussed in the prior art. That the respective suction stub line is connected by the switching unit 4 with the central supply air line 8 and it is blown in the suction stub 2 in the direction of storage room 1.
the central suction line 5 can be connected to the switching unit with the supply air stub, which leads to the affected suction probe 2.
the free flow path can also be one or two stubs lead from the switching unit in the fuel storage room and arrange their local open ends in such a height range in which the storage room is not filled with fuel.
This design is particularly easy to implement by conversion to existing systems. If two spur lines are used and the storage room is closed to ambient air, then the suction turbine can be similar to the use of a short circuit line from both Side (against ambient air pressure by negative pressure and by overpressure) act on the blockage.
the flow direction of the air in the central suction line 5 is reversible. This can be promoted for the removal of blockages in the central suction line 5 also there blown back, so opposite to the normal conveying direction.
the inventively proposed free flow path at the switching unit 4 is equally valuable, because it is achievable that the air flow to blow out the central suction line does not have to be routed through stubs and the storage room 1.
the reversal of the flow direction can take place, for example, by valve-controlled interchange of the connections of the suction turbine 6 in the central supply air line 8.

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Air Transport Of Granular Materials (AREA)

EP13177398.8A 2012-07-23 2013-07-22 Installation et procédé pour charger un poêle Active EP2690363B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
ATA821/2012A AT512403B1 (de)	2012-07-23	2012-07-23	Anlage und Verfahren für das Beschicken einer Feuerung mit stückigen oder pulverförmigen Brennstoffen

Publications (3)

Publication Number	Publication Date
EP2690363A2 true EP2690363A2 (fr)	2014-01-29
EP2690363A3 EP2690363A3 (fr)	2017-12-20
EP2690363B1 EP2690363B1 (fr)	2019-04-03

Family

ID=48875290

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP13177398.8A Active EP2690363B1 (fr)	2012-07-23	2013-07-22	Installation et procédé pour charger un poêle

Country Status (2)

Country	Link
EP (1)	EP2690363B1 (fr)
AT (1)	AT512403B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102019104784A1 (de) *	2019-02-26	2020-08-27	Viessmann Werke Gmbh & Co Kg	Umschaltvorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT507742B1 (de)	2008-12-16	2010-10-15	Froeling Heizkessel Und Behael	Verfahren zum austragen von stückeligem brennstoff, insbesondere pellets, aus einem lagerraum und vorrichtung zur durchführung des verfahrens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS60196515A (ja) *	1984-03-16	1985-10-05	Kawasaki Heavy Ind Ltd	流動床ボイラにおける給炭管閉塞検知方法
EP0164436B1 (fr) *	1984-06-14	1988-03-02	Wilfried Stein	Installation de transport dosé de matières pulvérulentes
DE4125937A1 (de) *	1991-08-05	1993-02-18	Siemens Ag	Vorrichtung mit abzweigungen zur pulverfoerderung

2012
- 2012-07-23 AT ATA821/2012A patent/AT512403B1/de not_active IP Right Cessation
2013
- 2013-07-22 EP EP13177398.8A patent/EP2690363B1/fr active Active

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT507742B1 (de)	2008-12-16	2010-10-15	Froeling Heizkessel Und Behael	Verfahren zum austragen von stückeligem brennstoff, insbesondere pellets, aus einem lagerraum und vorrichtung zur durchführung des verfahrens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102019104784A1 (de) *	2019-02-26	2020-08-27	Viessmann Werke Gmbh & Co Kg	Umschaltvorrichtung
DE102019104784B4 (de) *	2019-02-26	2020-10-15	Viessmann Werke Gmbh & Co Kg	Umschaltvorrichtung

Also Published As

Publication number	Publication date
EP2690363A3 (fr)	2017-12-20
EP2690363B1 (fr)	2019-04-03
AT512403A4 (de)	2013-08-15
AT512403B1 (de)	2013-08-15

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