EP0084279A2 - Verfahren und Einrichtung zur Wärmerückgewinnung, insbesondere bei der Abkühlung von Asche - Google Patents

Verfahren und Einrichtung zur Wärmerückgewinnung, insbesondere bei der Abkühlung von Asche Download PDF

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Publication number
EP0084279A2
EP0084279A2 EP82402145A EP82402145A EP0084279A2 EP 0084279 A2 EP0084279 A2 EP 0084279A2 EP 82402145 A EP82402145 A EP 82402145A EP 82402145 A EP82402145 A EP 82402145A EP 0084279 A2 EP0084279 A2 EP 0084279A2
Authority
EP
European Patent Office
Prior art keywords
ash
ashes
finest
fluidized bed
fumes
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
EP82402145A
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English (en)
French (fr)
Other versions
EP0084279A3 (en
EP0084279B1 (de
Inventor
Gérard Chrysostome
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9264427&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0084279(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Priority to AT82402145T priority Critical patent/ATE19688T1/de
Publication of EP0084279A2 publication Critical patent/EP0084279A2/de
Publication of EP0084279A3 publication Critical patent/EP0084279A3/fr
Application granted granted Critical
Publication of EP0084279B1 publication Critical patent/EP0084279B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat

Definitions

  • the subject of the invention is a method and an installation for recovering the heat contained in a solid body in divided form, and applies more particularly to the cooling of the ashes of poor fuels.
  • the body is separated into several parts of particle size corresponding for each to a determined range and each part is passed through a cooling device specially adapted to its particle size.
  • This process finds a particularly advantageous application in the case of poor fuels which are generally burned in a fluidized bed because this allows stable combustion and is satisfied with coarse grinding, for example between 0 and 10 mm.
  • the fluidized bed has the particularity of carrying out itself, during combustion, a separation of the ash produced according to their particle size.
  • the finest ashes for example less than 0.5 mm, are entrained by the ascending gaseous current discharged with the fumes while the ashes of larger particle size, for example between 0.5 and 10 mm remain in the fluidized bed.
  • advantage is taken of this separation carried out by said fluidized itself to adapt the cooling mode to the particle size. ash and use coolers at their optimum performance.
  • the large blues are removed from the ashes by the purge outlet from the fluidized bed, the finest ashes are separated from the fumes escaping from the oven and the two parts of the ashes thus collected are cooled in two cooling each adapted to the particle size, one of the finest ashes and the other of the largest ashes.
  • the coarsest ashes are cooled by circulation of air against the current and the finest ashes in a fluidized bed and the air heated by the coarsest ashes is mixed with the smoke leaving the oven after separation of the fine ash, said smoke and the air heated by the fine ash being then introduced at two different points in a circuit for using the heat of the gases thus heated.
  • the installation for implementing the method according to the invention therefore comprises two cooling devices fed one by the largest ash removed by the purge outlet and the other by the finest ash removed by a separator on the fumes coming out of the oven.
  • the appended figure schematically shows, by way of example, such an installation.
  • This comprises a fluidized bed oven consisting of an enclosure 1 provided at its lower part with a grid 11 limiting a chamber 12 for the arrival of fluidization gas.
  • the fuel supplied by an inlet 13 burns in the fluidized bed formed above the grid 11 and the fumes are evacuated through the chimney 14.
  • An outlet 15 placed at the height of the fluidized bed and produced in a conventional manner makes it possible to carry out a purge by evacuating the largest ashes while the finest ashes escape with the fumes through the chimney 14.
  • the ash leaving through the drain 15 feeds a cooler 2 constituted for example by an inclined rotary drum inside which the ashes descend, against the flow of the cooling gas such as air which is introduced cold at 21, circulates solid matter in the opposite direction and exits at 22 at a temperature of the order of 800 ° C.
  • a cooler 2 constituted for example by an inclined rotary drum inside which the ashes descend, against the flow of the cooling gas such as air which is introduced cold at 21, circulates solid matter in the opposite direction and exits at 22 at a temperature of the order of 800 ° C.
  • the fumes which escape through the chimney 14 at a temperature of approximately 900 ° C. first pass through a static separator 3, for example a cyclone and are directed by a pipe 31 for discharging the gases towards a circuit d use, for example a recovery boiler 4.
  • the finest ash entrained in the chimney 14 by the fumes is therefore collected at the bottom of the separator 3, at a temperature of about 900 ° C and supply a cooler adapted to their particle size, for example a fluidized bed 5.
  • This is supplied by cold air which is distributed under the grid, passes through it with a low speed and leaves in 51 at a temperature of around 500 °.
  • the air at 800 ° leaving at 22 from the counter-current cooler 2 is evacuated through a line 23 which opens into the line 31 upstream of the boiler 4 which is thus supplied with the mixture which circulates inside the boiler by cooling for example on water circulation beams for the production of steam.
  • the air at 500 ° leaving at 51 from the cooler 5 can therefore be introduced further downstream in the recovery boiler, in an area where the fumes have already been cooled to a temperature of about 500 °.
  • each of the two coolers operates for the particle size to which it is adapted and the hot gases produced are used under optimal conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
  • Gasification And Melting Of Waste (AREA)
EP82402145A 1981-11-27 1982-11-25 Verfahren und Einrichtung zur Wärmerückgewinnung, insbesondere bei der Abkühlung von Asche Expired EP0084279B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82402145T ATE19688T1 (de) 1981-11-27 1982-11-25 Verfahren und einrichtung zur waermerueckgewinnung, insbesondere bei der abkuehlung von asche.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8122228 1981-11-27
FR8122228A FR2517419A1 (fr) 1981-11-27 1981-11-27 Procede et installation de recuperation de chaleur, notamment pour le refroidissement de cendres

Publications (3)

Publication Number Publication Date
EP0084279A2 true EP0084279A2 (de) 1983-07-27
EP0084279A3 EP0084279A3 (en) 1983-08-10
EP0084279B1 EP0084279B1 (de) 1986-05-07

Family

ID=9264427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82402145A Expired EP0084279B1 (de) 1981-11-27 1982-11-25 Verfahren und Einrichtung zur Wärmerückgewinnung, insbesondere bei der Abkühlung von Asche

Country Status (7)

Country Link
US (1) US4471723A (de)
EP (1) EP0084279B1 (de)
JP (1) JPS58173312A (de)
AT (1) ATE19688T1 (de)
BR (1) BR8206856A (de)
DE (1) DE3271053D1 (de)
FR (1) FR2517419A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980820A (zh) * 2018-07-16 2018-12-11 重庆大学 一种循环流化床锅炉底渣余热回收装置
CN110052223A (zh) * 2019-05-20 2019-07-26 陕西金泰氯碱化工有限公司 一种无汞催化合成氯乙烯采用高沸点水溶液移热的装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723402A (en) * 1950-07-12 1955-11-15 Lloyd V France Propolis culture
JPS61175408A (ja) * 1985-01-31 1986-08-07 Chiyuushiyou Kigyo Shinko Jigyodan 石炭ボイラ燃焼灰の冷却方法
DE3625992A1 (de) * 1986-07-31 1988-02-04 Steinmueller Gmbh L & C Verfahren zum verbrennen von kohlenstoffhaltigen materialien in einer zirkulierenden wirbelschicht und wirbelschichtfeuerungsanlage zur durchfuehrung des verfahrens
SE459987B (sv) * 1987-12-23 1989-08-28 Abb Stal Ab Saett att kyla aska och kraftanlaeggning med en anordning foer askkylning

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317470A (en) * 1928-08-18 1931-01-02 Geza Szikla Improvements in or relating to coal dust furnaces
FR1221397A (fr) * 1958-03-24 1960-06-01 Cie Metaux Doverpelt Lommel Procédé pour la valorisation de combustibles très cendreux et à pouvoir calorifique très faible
DE1166402B (de) * 1958-11-04 1964-03-26 Cie Des Metaux D Overpelt Lomm Wirbelbettfeuerung zur Verbrennung geringwertiger Brennstoffe in zwei Verbrennungskammern
GB1032598A (en) * 1963-10-14 1966-06-15 Fuji Photo Film Co Ltd Improvements in or relating to heating apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2624302A1 (de) * 1976-05-31 1977-12-22 Metallgesellschaft Ag Verfahren zur durchfuehrung exothermer prozesse
US4159682A (en) * 1977-12-01 1979-07-03 Dorr-Oliver Incorporated Fluid bed combustion with predrying of moist feed using bed sand
US4196676A (en) * 1978-07-21 1980-04-08 Combustion Power Company, Inc. Fluid bed combustion method and apparatus
US4349969A (en) * 1981-09-11 1982-09-21 Foster Wheeler Energy Corporation Fluidized bed reactor utilizing zonal fluidization and anti-mounding pipes
US4355601A (en) * 1981-09-25 1982-10-26 Conoco Inc. Recirculating flue gas fluidized bed heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB317470A (en) * 1928-08-18 1931-01-02 Geza Szikla Improvements in or relating to coal dust furnaces
FR1221397A (fr) * 1958-03-24 1960-06-01 Cie Metaux Doverpelt Lommel Procédé pour la valorisation de combustibles très cendreux et à pouvoir calorifique très faible
DE1166402B (de) * 1958-11-04 1964-03-26 Cie Des Metaux D Overpelt Lomm Wirbelbettfeuerung zur Verbrennung geringwertiger Brennstoffe in zwei Verbrennungskammern
GB1032598A (en) * 1963-10-14 1966-06-15 Fuji Photo Film Co Ltd Improvements in or relating to heating apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108980820A (zh) * 2018-07-16 2018-12-11 重庆大学 一种循环流化床锅炉底渣余热回收装置
CN110052223A (zh) * 2019-05-20 2019-07-26 陕西金泰氯碱化工有限公司 一种无汞催化合成氯乙烯采用高沸点水溶液移热的装置

Also Published As

Publication number Publication date
FR2517419B3 (de) 1984-08-24
ATE19688T1 (de) 1986-05-15
DE3271053D1 (en) 1986-06-12
BR8206856A (pt) 1983-10-04
EP0084279A3 (en) 1983-08-10
FR2517419A1 (fr) 1983-06-03
EP0084279B1 (de) 1986-05-07
US4471723A (en) 1984-09-18
JPS58173312A (ja) 1983-10-12

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