GB2009905A - Returning fuel residues to a fluidised bed boiler combustion chamber - Google Patents

Returning fuel residues to a fluidised bed boiler combustion chamber

Info

Publication number
GB2009905A
GB2009905A GB7900402A GB7900402A GB2009905A GB 2009905 A GB2009905 A GB 2009905A GB 7900402 A GB7900402 A GB 7900402A GB 7900402 A GB7900402 A GB 7900402A GB 2009905 A GB2009905 A GB 2009905A
Authority
GB
United Kingdom
Prior art keywords
boiler
bed
combustion chamber
fluidised bed
fuel
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
GB7900402A
Other versions
GB2009905B (en
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.)
Rolls Royce Power Engineering PLC
Original Assignee
Northern Engineering Industries PLC
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 Northern Engineering Industries PLC filed Critical Northern Engineering Industries PLC
Priority to GB7900402A priority Critical patent/GB2009905B/en
Publication of GB2009905A publication Critical patent/GB2009905A/en
Application granted granted Critical
Publication of GB2009905B publication Critical patent/GB2009905B/en
Expired legal-status Critical Current

Links

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
    • F23C10/02—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
    • F23C10/08—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 characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
    • 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
    • F22B31/0046—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 for boilers of the shell type, e.g. with furnace box
    • 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
    • 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
    • F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus

Landscapes

  • 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)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Solid-Fuel Combustion (AREA)

Abstract

In a fluidised bed boiler, partly burned fuel and bed material are separated from the flue gas outside the combustion chamber and returned to the bed. In a boiler 110, these solid particles are separated out by separating means in the form of a fire wall array 170, 172, 174 and pneumatically conveyed back to the bed 122 by a pneumatic conveyor means 178, 182, 184, 186. Bouyant ash passes right through the boiler 110 to be separated out by a cyclone 152. The separation can occur in a gas reversal chamber in an alternative construction. The pneumatic means can be replaced by a mechanical screw-feeder conveyor means. The boiler is preferably a shell boiler. This system ensures the economic burning of substantially all the fuel content of the solid fuel and the reuse of good bed material which might be otherwise lost. <IMAGE>
GB7900402A 1977-10-06 1979-01-05 Boiler Expired GB2009905B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7900402A GB2009905B (en) 1977-10-06 1979-01-05 Boiler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4156577 1977-10-06
GB7900402A GB2009905B (en) 1977-10-06 1979-01-05 Boiler

Publications (2)

Publication Number Publication Date
GB2009905A true GB2009905A (en) 1979-06-20
GB2009905B GB2009905B (en) 1982-08-11

Family

ID=26264706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7900402A Expired GB2009905B (en) 1977-10-06 1979-01-05 Boiler

Country Status (1)

Country Link
GB (1) GB2009905B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292406A1 (en) * 1987-05-22 1988-11-23 Constructions Industrielles De La Mediterranee C.N.I.M. Process for producing a hot fluid and boiler for carrying out this process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292406A1 (en) * 1987-05-22 1988-11-23 Constructions Industrielles De La Mediterranee C.N.I.M. Process for producing a hot fluid and boiler for carrying out this process
FR2615600A1 (en) * 1987-05-22 1988-11-25 Mediterranee Const Navales Ind PROCESS FOR PRODUCING A HOT FLUID AND BOILER FOR PERFORMING THIS PROCESS

Also Published As

Publication number Publication date
GB2009905B (en) 1982-08-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930105