GB2009905A - Returning fuel residues to a fluidised bed boiler combustion chamber - Google Patents
Returning fuel residues to a fluidised bed boiler combustion chamberInfo
- 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
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>
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)
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 |
-
1979
- 1979-01-05 GB GB7900402A patent/GB2009905B/en not_active Expired
Cited By (2)
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 |