CA2624054A1 - A boiler producing steam from flue gases with high electrical efficiency and improved slag quality - Google Patents

A boiler producing steam from flue gases with high electrical efficiency and improved slag quality Download PDF

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Publication number
CA2624054A1
CA2624054A1 CA002624054A CA2624054A CA2624054A1 CA 2624054 A1 CA2624054 A1 CA 2624054A1 CA 002624054 A CA002624054 A CA 002624054A CA 2624054 A CA2624054 A CA 2624054A CA 2624054 A1 CA2624054 A1 CA 2624054A1
Authority
CA
Canada
Prior art keywords
boiler according
boiler
corrosive gas
steam
less
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
CA002624054A
Other languages
French (fr)
Other versions
CA2624054C (en
Inventor
Kim Allan Dam-Johansen
Peter Arendt Jensen
Flemming J. Frandsen
Ole Hedegaard Madsen
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.)
Babcock and Wilcox Volund AS
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2624054A1 publication Critical patent/CA2624054A1/en
Application granted granted Critical
Publication of CA2624054C publication Critical patent/CA2624054C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • 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
    • F22B31/04—Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/48—Preventing corrosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/103—Combustion in two or more stages in separate chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/104—Combustion in two or more stages with ash melting stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/10—Combustion in two or more stages
    • F23G2202/105—Combustion in two or more stages with waste supply in stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/12—Heat utilisation in combustion or incineration of waste

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

This invention relates to a boiler (1 ) drying, igniting and combusting refuse and pro¬ ducing steam (2, 2a) by heat exchange with flue gases (3). Said boiler (1 ) comprises a reactor (16) with firing a secondary fuel (18) for generating a less-corrosive gas flow (6) and an end superheater (8) located in the flow (6) of said less-corrosive gas. Said reactor (16) could be a sintering reactor, a rotary kiln, a fluidised bed or a spouted bed. This provides for an increased lifetime of the end superheater and makes the boiler provide a high and efficient electrical power output.

Claims (17)

1. A boiler (1) drying, igniting and combusting refuse and producing steam 42, 2a) by heat exchange with flue gases (3), said boiler (1) comprising a reactor (16) fired with a secondary fuel (18) for generating a less-corrosive gas flow (6) and an end superhea-ter (8) located in the flow (6) of said less-corrosive gas, the reactor (16) being a sintering reactor, a rotary kiln, a fluidised bed or a spouted bed.
2. The boiler according to claim 1, wherein said firing with the secondary fuel (18) takes place by means of a burner (19) and/or in the reactor itself.
3. The boiler according to claim 1, further comprising a separator element (4) for maintaining separation of said flue gases (3) into streams of a said less-corrosive gas flow (6) and a corrosive gas flow (7), respectively.
4. The boiler according to claim 3, wherein said separator element (4) comprises a plate (4a) or a wall (4b).
5. The boiler according to any of the preceding claims, wherein a number of said separator elements (4) form a channel.
6. The boiler according to any of the preceding claims wherein said separator element or channel is adapted to be suspendable on or from the walls of the boiler.
7. The boiler according to any of the preceding claims, wherein said less-corrosive gas (6) and corrosive gas (7) are cooled by means of an evaporation wall in the radia-tion zone and one or more superheaters (11), which produce steam (2) at between 300 and 450 degrees Celsius.
8. The boiler according to any of the preceding claims, wherein said steam (2) is heated in the end superheater (8).
9. The boiler according to any of the preceding claims, wherein said end superheater (8) heats said steam (2) to become steam (2a) of an increased temperature, resulting in a temperature increase of between 25 and 200 degrees Celsius as compared to the temperature of said steam (2).
10. The boiler according to any of the preceding claims, wherein the less-corrosive gas (6) is essentially free from Cl, K, Na, Zn and Pb.
11. The boiler according to any of the preceding claims, wherein the corrosive gas (7) comprises one or more of Cl, K, Na, Zn and Pb.
12. The boiler according to any of the preceding claims, wherein said flue gases (3) are the result of incineration of refuse (9).
13. The boiler according to any of the preceding claims further comprising a blow unit (12) adapted to, by blowing secondary air, effectively mix said less-corrosive gas (6) with said corrosive gas (7), whereby said mix tan be effectively burnt out before it reaches the top zone (13) of the boiler.
14. The boiler according to any of the preceding claims, wherein the steam (2a) is util-ised to produce electricity when said steam is fed into a steam turbine (14) driving a generator (15).
15. The boiler according to any of the preceding claims, wherein the reactor (16) pro-duces final ash and/or slag with a low content of trace and heavy metal fractions which can leach out, such as a low content of leachable Pb, As, Cd, Cu, Zn, Ni and Zn.
16. The boiler according to any of the preceding claims, wherein the secondary fuel (18) is any combination of oil, gas, coal, biomass, air and a selected waste or refuse fraction.
17. The boiler according to any of the preceding claims, wherein the secondary fuel is selected to develop flue gases, which are less corrosive than the flue gases from said refuse or waste.
CA2624054A 2005-09-30 2006-09-29 A boiler producing steam from flue gases with high electrical efficiency and improved slag quality Expired - Fee Related CA2624054C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DKPA200501373 2005-09-30
DKPA200501373 2005-09-30
PCT/IB2006/053563 WO2007036914A1 (en) 2005-09-30 2006-09-29 A boiler producing steam from flue gases with high electrical efficiency and improved slag quality

Publications (2)

Publication Number Publication Date
CA2624054A1 true CA2624054A1 (en) 2007-04-05
CA2624054C CA2624054C (en) 2012-03-27

Family

ID=37745895

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2624054A Expired - Fee Related CA2624054C (en) 2005-09-30 2006-09-29 A boiler producing steam from flue gases with high electrical efficiency and improved slag quality

Country Status (8)

Country Link
US (1) US20090050076A1 (en)
EP (1) EP1934526A1 (en)
JP (1) JP5053279B2 (en)
KR (1) KR101029906B1 (en)
CN (1) CN101287950B (en)
CA (1) CA2624054C (en)
NO (1) NO20081542L (en)
WO (1) WO2007036914A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007533434A (en) * 2004-04-02 2007-11-22 スキル アソシエイツ インコーポレイテッド Biomass conversion device and process
NL2007384C2 (en) 2011-09-09 2013-03-12 Ppm Engineering B V SYSTEM AND METHOD FOR PACKING DOSED QUANTITIES OF SOLID MEDICINES
FR3012578B1 (en) * 2013-10-24 2015-12-11 Suez Environnement METHOD AND INSTALLATION FOR ENERGY ENHANCING WASTE
WO2016147023A1 (en) * 2015-03-13 2016-09-22 Babcock & Wilcox Vølund A/S Incineration plant with superheater
EP3193082B1 (en) * 2016-01-12 2018-08-29 Hitachi Zosen Inova AG Method and device for producing superheated steam using the heat generated in the boiler of a combustion plant
WO2020140337A1 (en) * 2018-12-30 2020-07-09 上海康恒环境股份有限公司 High-temperature high-pressure waste incinerator
CN111534654A (en) * 2020-05-26 2020-08-14 澄江磷化工金龙有限责任公司 Steam recycling comprehensive utilization system of slag collecting tank

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CH376604A (en) * 1961-03-20 1964-04-15 Von Roll Ag Method for operating a waste incineration plant
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JPS53118868A (en) * 1976-02-10 1978-10-17 Takuma Co Ltd Refuse burning plant combining stoker type incinerator and melting gasification burning furnace
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CN1061428C (en) * 1993-10-23 2001-01-31 郭聪贤 Equipment for refuse incineration and using heat energy
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EP0771402A1 (en) * 1994-07-15 1997-05-07 Aalborg Industries A/S A fluid-bed heat exchanger, fluid-bed combustion reactor systems and methods for the operation of a fluid-bed heat exchanger and a fluid-bed combustion reactor system
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Also Published As

Publication number Publication date
JP2009510384A (en) 2009-03-12
EP1934526A1 (en) 2008-06-25
CA2624054C (en) 2012-03-27
CN101287950B (en) 2012-09-26
US20090050076A1 (en) 2009-02-26
JP5053279B2 (en) 2012-10-17
CN101287950A (en) 2008-10-15
KR20080094656A (en) 2008-10-23
KR101029906B1 (en) 2011-04-18
NO20081542L (en) 2008-06-25
WO2007036914A1 (en) 2007-04-05

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MKLA Lapsed

Effective date: 20170929