EP3130849A1 - Ofen mit zirkulierendem wirbelbett - Google Patents

Ofen mit zirkulierendem wirbelbett Download PDF

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Publication number
EP3130849A1
EP3130849A1 EP15180610.6A EP15180610A EP3130849A1 EP 3130849 A1 EP3130849 A1 EP 3130849A1 EP 15180610 A EP15180610 A EP 15180610A EP 3130849 A1 EP3130849 A1 EP 3130849A1
Authority
EP
European Patent Office
Prior art keywords
fluidized bed
circulating fluidized
exchange chamber
heat exchange
bed furnace
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
Application number
EP15180610.6A
Other languages
English (en)
French (fr)
Other versions
EP3130849B1 (de
Inventor
Alexander Baum
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.)
Doosan Lentjes GmbH
Original Assignee
Doosan Lentjes 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.)
Filing date
Publication date
Priority to ES15180610.6T priority Critical patent/ES2687791T3/es
Application filed by Doosan Lentjes GmbH filed Critical Doosan Lentjes GmbH
Priority to DK15180610.6T priority patent/DK3130849T3/en
Priority to EP15180610.6A priority patent/EP3130849B1/de
Priority to PL15180610T priority patent/PL3130849T3/pl
Priority to CN201690001084.3U priority patent/CN209325767U/zh
Priority to KR1020187004085A priority patent/KR20180040152A/ko
Priority to PCT/EP2016/063093 priority patent/WO2017025215A1/en
Publication of EP3130849A1 publication Critical patent/EP3130849A1/de
Priority to PH22018500003U priority patent/PH22018500003U1/en
Priority to ZA2018/00809A priority patent/ZA201800809B/en
Application granted granted Critical
Publication of EP3130849B1 publication Critical patent/EP3130849B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/46—Gasification of granular or pulverulent flues in suspension
    • C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
    • C10J3/56—Apparatus; Plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • F22B31/0092—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed with a fluidized heat exchange bed and a fluidized combustion bed separated by a partition, the bed particles circulating around or through that partition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/201—Suspension and securing arrangements for walls built-up from tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/24—Supporting, suspending, or setting arrangements, e.g. heat shielding
    • F22B37/244—Supporting, suspending, or setting arrangements, e.g. heat shielding for water-tube steam generators suspended from the top
    • 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
    • F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
    • F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D13/00—Heat-exchange apparatus using a fluidised bed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • 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
    • F23C2206/103—Cooling recirculating particles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts

Definitions

  • the invention relates to so-called Circulating Fluidized Bed Furnace (CFBF) being part of a Circulating Fluidized Bed Apparatus (CFBA), which main components are:
  • the outer walls of the furnace which define the combustion chamber (reaction chamber), are usually so-called tube walls, comprising welded tubes with or without fins in between.
  • a heat transferring fluid like water and/or steam is fed through said tubes/pipes of said furnace walls in order to cool the same and to transfer heat therefrom for further purposes.
  • the CFBF typically has at least one outlet port at its upper end, via which a mixture of gas and solid particles, exhausted from the reactor, may flow into at least one associated separator.
  • US 5,840,258A discloses a design of such CFBA, wherein the CFBF and the FBHE have been integrated closely together; in other words: FBHE and CFBF have a common wall (tube wall).
  • this design provides the advantage of close (similar) temperatures in both units and thus, minimizes any thermal stresses between both units.
  • the thermal expansion of a CFBF of a height of ca. 35 to 50m may range from 0,1m to 0,3m and may cause serious stresses within the furnace walls, independently of whether the furnace is bottom supported (according to US 5,840,258A ) or top-supported (suspended), as shown in US 6,305,330B1 .
  • One further problem in this context is to properly adapt associated parts of the CFBA, for example the separator and/or the heat exchanger.
  • associated parts of the CFBA for example the separator and/or the heat exchanger.
  • special expansion joints are required to accommodate motions between associated parts.
  • the invention is based on the following findings:
  • a generic heat exchanger of a CFBA has a size of for example 5x5x5m and a corresponding weight of 100.000kg in an empty state. Additional loads by the solid material transported through said heat exchanger vary strongly and may be in a range up to 100.000kg or more.
  • the furnace wall, to which the heat exchanger may be friction-locked typically a so-called tube wall, cannot withstand/compensate such high and varying loads unless constructed as a "castle-wall", being unacceptable in view of costs and the thermal conditions of a CFBA.
  • the thermal expansions/constrictions mentioned above cause further structural problems.
  • the invention now provides a technical solution for this problem and furthermore a technically relatively simple construction, by further providing at least one structural element, by which the heat exchanger is mechanically linked to the furnace wall, which structural element allows to compensate any such additional loads caused by the heat exchanger and/or the material passing there through.
  • the invention relates to a circulating fluidized bed furnace, comprising
  • the structural element "absorbs" all (additional) forces, which have not been absorbed by the furnace wall, to which the heat exchanger is fixedly secured for example by welding.
  • the first end of the structural element is fixed to the furnace wall at a vertical distance above the heat exchanger, while it is important for the second end being affixed to the heat exchanger at a horizontal distance to the furnace wall and best to a vertically extending wall of the heat exchanger, for example its outer wall, being the wall opposite to the furnace wall.
  • substantially parallel includes a sloped orientation within technical tolerances, with an angle between furnace wall and a longitudinal axis of the structural element of at most 15°, better less than 10°, less than 5° or less than 3°.
  • the run of the structural element e.g. the rope or wire
  • the run of the structural element downwardly and parallel to the furnace wall allows to largely avoid mechanical moments to act on said rope but to stress the rope predominantly or even exclusively in its axial direction.
  • the vertical orientation of the tensile means (rope etc), parallel to the furnace wall, to which it is fixed at its first end, causes any forces to be absorbed by said rope to be forces in an axial direction of said means, i.e. in a direction, where the said rope features its highest stability.
  • the second section may extend substantially parallel to the outer furnace wall and at a horizontal distance to the first section.
  • the support structure can be the same discrete support (steel) structure, for example a (rigid) frame, to which the furnace and other units of the CFBA are fixed in a suspended manner.
  • a corresponding design is known from US 6,305,330B1 .
  • the support structure can be as well a separate structure or any of the corresponding units of the CFBA can be used as such support structure to hang the heat exchanger.
  • This behaviour can be favourably used for the invention, namely to compensate different loads of the heat exchange chamber (by varying loads of solid materials).
  • They can be arranged, i.a., between heat exchanger and a rigid frame (the same as to suspend the furnace or another one) or between heat exchanger and a cyclone arranged above said heat exchanger.
  • Fig. 1 displays a highly schematic drawings of a furnace arrangement according to the invention.
  • Fig. 1 displays part of a circulating fluidized bed apparatus (CFBA), namely a circulating fluidized bed reactor (furnace) 10 with a particulate material inlet port 10i, an air plenum at a bottom area (symbolized by arrow 10a), a fluidized bed of particulate material above said air plenum, being part of its combustion chamber 10c, and at least one outlet port 12 at its upper part, wherein said outlet port 12 allows a mixture of gas and solid particles exhausted from the circulating fluidized bed furnace chamber 10c to flow into at least one associated separator 14 for separating solid particles from said gas, means 16 (including a non-illustrated syphon) to transfer said separated solid particles into at a circulating fluidized bed heat exchanger 20 and return means 22 to transport the solid particles back into the circulating fluidized bed furnace 10, wherein the circulating fluidized bed furnace 10 (also called a boiler), the separator 14 (also called a cyclone) and the circulating fluidized bed heat exchanger 20 (or any other type
  • a plurality of vertically extending steel support columns 30r,l extends from the ground (symbolized by foundations 32) to a plurality of spaced horizontally extending beams 34.
  • a plurality of hanger rods 36 extends downwardly from said beams 34 for supporting the furnace 10 and the separator 14 in a suspended manner.
  • the heat exchange chamber (unit) 20 (wherein heat exchange means like heat exchange tubes are symbolized by wave 20w) is friction-locked to the furnace 10 (its tube wall 10r) by welding. It derives from this that part of the right wall 10r of said circulating fluidized bed furnace 10 represents as well the left wall of said heat exchanger 20, which other walls - as well as the furnace walls - are all designed as tube walls (made of tubes in a spaced relationship with fins in between and water and/or steam flowing through said tubes).
  • the circulating fluidized bed heat exchanger 20 is further suspended by a steel rope 50, having a first end 50f, fixed to the right furnace wall 10r, and a second end 50s, fixed to the upper end section of the right wall 20r of the heat exchanger 20, i.e. at the largest possible horizontal offset to the furnace wall 10r.
  • the steel rope 50 has three sections, a first section 50fs, extending vertically downwardly from its first end 50f and parallel to the furnace wall 10r, a second section 50ss, extending vertically upwardly from its second end 50s (and insofar as well parallel to the furnace wall 10r), and one intermediate section 50is, extending in-between in a substantially horizontal orientation and insofar perpendicular to the furnace wall 10r.
  • the first rope section 50fs runs closely to the furnace wall 10r; insofar fixation means 50fm of said first rope section 50fs are displayed larger than in reality (for the purpose of a better illustration).
  • the intermediate rope section 50 is winds around a lower part of a first rotating disk (roller) 52fd, mounted to a beam 52, which extends horizontally from column 30r, at its left end (following the first rope section 50fs) and, at a distance thereto, winds around an upper part of a second roller (rotating disk) 52sd (followed by the second rope section 50ss).
  • Said rope 50 not only fulfils the function of a structural element to support the heat exchanger 20 in a suspended manner, but provides the advantage, that the strain on the first section 50fs of said rope 50 is predominantly parallel to the right tube wall 10r and underdoes predominantly (nearly exclusively) only vertically downwardly directed tensile forces.
  • Fig. 1 further displays an optional, but favorable feature of the invention, namely constant load hangers (only one of which is shown in Fig. 1 ) and identified by numeral 54.
  • Said constant load hangers 54 which can be for example constant load springs and/or constant load coils, are attached with their upper ends to said beam 52 and with their lower ends to the ceiling (upper tube wall 20u) of the heat exchanger 20 and are able to relieve said rope 50.
  • the suspended construction of said furnace 10 allows to follow the thermal expansions of the respective construction elements and avoids mechanical forces, thermo-mechanical forces and/or moments between adjacent construction parts.
  • the common section of tube wall 10r brings the temperatures within heat exchanger 20 and furnace 10 into closer conformity and thus minimizes any thermal and mechanical stresses between these units of the CFBA, avoiding special expansion joints in between to great extent.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
EP15180610.6A 2015-08-11 2015-08-11 Ofen mit zirkulierendem Wirbelbett Not-in-force EP3130849B1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DK15180610.6T DK3130849T3 (en) 2015-08-11 2015-08-11 Circulating fluid bed furnace
EP15180610.6A EP3130849B1 (de) 2015-08-11 2015-08-11 Ofen mit zirkulierendem Wirbelbett
PL15180610T PL3130849T3 (pl) 2015-08-11 2015-08-11 Palenisko z cyrkulującym złożem fluidalnym
ES15180610.6T ES2687791T3 (es) 2015-08-11 2015-08-11 Horno de lecho fluidizado circulante
CN201690001084.3U CN209325767U (zh) 2015-08-11 2016-06-09 循环流化床炉
KR1020187004085A KR20180040152A (ko) 2015-08-11 2016-06-09 순환 유동상 퍼니스
PCT/EP2016/063093 WO2017025215A1 (en) 2015-08-11 2016-06-09 Circulating fluidized bed furnace
PH22018500003U PH22018500003U1 (en) 2015-08-11 2018-01-23 Circulating fluidized bed furnace
ZA2018/00809A ZA201800809B (en) 2015-08-11 2018-02-07 Circulating fluidized bed furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15180610.6A EP3130849B1 (de) 2015-08-11 2015-08-11 Ofen mit zirkulierendem Wirbelbett

Publications (2)

Publication Number Publication Date
EP3130849A1 true EP3130849A1 (de) 2017-02-15
EP3130849B1 EP3130849B1 (de) 2018-07-04

Family

ID=53800895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15180610.6A Not-in-force EP3130849B1 (de) 2015-08-11 2015-08-11 Ofen mit zirkulierendem Wirbelbett

Country Status (9)

Country Link
EP (1) EP3130849B1 (de)
KR (1) KR20180040152A (de)
CN (1) CN209325767U (de)
DK (1) DK3130849T3 (de)
ES (1) ES2687791T3 (de)
PH (1) PH22018500003U1 (de)
PL (1) PL3130849T3 (de)
WO (1) WO2017025215A1 (de)
ZA (1) ZA201800809B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127236B (en) * 2016-01-19 2018-02-15 Sumitomo SHI FW Energia Oy Separator and heat exchange chamber assembly and method for mounting the assembly, as well as a circulating fluidized bed boiler with a separator and heat exchange chamber assembly

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106036A1 (de) * 1971-02-09 1972-08-31
US4015547A (en) * 1975-04-01 1977-04-05 Viktor Yakovlevich Miller Supporting device for blast-furnace hot-blast main
DE3138341A1 (de) * 1981-09-26 1983-04-07 Deutsche Babcock Ag, 4200 Oberhausen Anordnung zum befestigen von waagerecht angeordneten brennern
US4615715A (en) 1985-03-15 1986-10-07 Foster Wheeler Energy Corporation Water-cooled cyclone separator
US5425412A (en) 1992-11-10 1995-06-20 A. Alhstrom Corporation Method and apparatus for operating a circulating fluidized bed reactor system
US5840285A (en) 1991-12-11 1998-11-24 Bernel Chemical Co., Inc Dermatological compositions using a series of unusually safe esters as cosmetic emollients with unique and ideal physical properties
US5840258A (en) 1992-11-10 1998-11-24 Foster Wheeler Energia Oy Method and apparatus for transporting solid particles from one chamber to another chamber
US6305330B1 (en) 2000-03-03 2001-10-23 Foster Wheeler Corporation Circulating fluidized bed combustion system including a heat exchange chamber between a separating section and a furnace section
US6802890B2 (en) 2000-04-07 2004-10-12 Foster Wheeler Energia Oy Method and apparatus for separating particles from hot gases
EP1847773A2 (de) * 2006-04-19 2007-10-24 The Babcock & Wilcox Company Integrierter Wirbelschichtaschenkühler
EP2884172A1 (de) * 2013-12-16 2015-06-17 Doosan Lentjes GmbH Wirbelbettsiphon

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2106036A1 (de) * 1971-02-09 1972-08-31
US4015547A (en) * 1975-04-01 1977-04-05 Viktor Yakovlevich Miller Supporting device for blast-furnace hot-blast main
DE3138341A1 (de) * 1981-09-26 1983-04-07 Deutsche Babcock Ag, 4200 Oberhausen Anordnung zum befestigen von waagerecht angeordneten brennern
US4615715A (en) 1985-03-15 1986-10-07 Foster Wheeler Energy Corporation Water-cooled cyclone separator
US5840285A (en) 1991-12-11 1998-11-24 Bernel Chemical Co., Inc Dermatological compositions using a series of unusually safe esters as cosmetic emollients with unique and ideal physical properties
US5425412A (en) 1992-11-10 1995-06-20 A. Alhstrom Corporation Method and apparatus for operating a circulating fluidized bed reactor system
US5840258A (en) 1992-11-10 1998-11-24 Foster Wheeler Energia Oy Method and apparatus for transporting solid particles from one chamber to another chamber
US6305330B1 (en) 2000-03-03 2001-10-23 Foster Wheeler Corporation Circulating fluidized bed combustion system including a heat exchange chamber between a separating section and a furnace section
US6802890B2 (en) 2000-04-07 2004-10-12 Foster Wheeler Energia Oy Method and apparatus for separating particles from hot gases
EP1847773A2 (de) * 2006-04-19 2007-10-24 The Babcock & Wilcox Company Integrierter Wirbelschichtaschenkühler
EP2884172A1 (de) * 2013-12-16 2015-06-17 Doosan Lentjes GmbH Wirbelbettsiphon

Also Published As

Publication number Publication date
EP3130849B1 (de) 2018-07-04
PH22018500003U1 (en) 2019-05-10
WO2017025215A1 (en) 2017-02-16
DK3130849T3 (en) 2018-09-24
ZA201800809B (en) 2018-11-28
PL3130849T3 (pl) 2019-01-31
ES2687791T3 (es) 2018-10-29
CN209325767U (zh) 2019-08-30
KR20180040152A (ko) 2018-04-19

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