EP1934526A1 - 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

Info

Publication number
EP1934526A1
EP1934526A1 EP06809447A EP06809447A EP1934526A1 EP 1934526 A1 EP1934526 A1 EP 1934526A1 EP 06809447 A EP06809447 A EP 06809447A EP 06809447 A EP06809447 A EP 06809447A EP 1934526 A1 EP1934526 A1 EP 1934526A1
Authority
EP
European Patent Office
Prior art keywords
boiler
boiler according
steam
corrosive gas
reactor
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.)
Withdrawn
Application number
EP06809447A
Other languages
German (de)
English (en)
French (fr)
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
Babcock and Wilcox Volund AS
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 Babcock and Wilcox Volund AS filed Critical Babcock and Wilcox Volund AS
Publication of EP1934526A1 publication Critical patent/EP1934526A1/en
Withdrawn legal-status Critical Current

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

Definitions

  • US patent no. 6,269,754 discloses a steam generator for superheated steam for incineration plants with corrosive flue gases. It essentially comprises a radiation section and a convection section, having at least one superheater and having plates arranged on the inside of a wall of the radiation section, a space is being provided between the plates and the wall of the radiation section. At least a part of the superheater is being arranged as a wall superheater in the space in the radiation section.
  • This space contains a less-corrosive gaseous atmosphere, which is at a higher pressure than the pressure of the gases in the combustion chamber.
  • Bottom ash In general bottom ash is called slag.
  • Bottom ash or slag is defined as the ash removed from the bottom part of the combustion zone of the boiler. Ashes are defined as the residual products from the combustion process.
  • the sintering reactor is a reactor that heats the ash/slag so that leaching properties are improved. This means that the leaching of heavy metals from the ash/slag is re- prised.
  • the reactor is located - in the direction of the flow of the refuse - after the grate arrangement (21 ).
  • a corrosive gas flow is the result in the pre-process, and conversely at reference numeral 6, a less-corrosive gas flow is the result in the post-process.
  • the less-corrosive gas flow is the output from said reactor (16), possibly fired with a fuel (18), typically a secondary fuel (18).
  • the secondary fuel is selected to develop flue gases that are less corrosive than the flue gases from said refuse or waste.
  • an integrated bottom ash treatment and improved electrical plant efficiency may be obtained by the concepts shown in the figure. It is thus advantageous to combine the high-efficient grate firing of e.g. refuse, such as municipal solid waste, with a post- treatment of the bottom ash (by means of the reactor) in a single plant, so that the final bottom-ash and/or slag produced will fulfil the current environmental and technical restrictions necessary for reuse, and at the same time this integrated post-treatment provides a less-corrosive flue gas (6), which can be applied to increase the end super- heater (8) steam temperature and thereby the electrical efficiency of the waste-fired boiler of the plant.
  • the total process is integrated, energy-efficient and contained within a single plant without the need for transporting, storing, and subsequent handling/treatment of the bottom ash and/or slag from the grate in another plant.
  • Said less-corrosive gas is essentially free from corrosive components, such as Cl, K, Na, Zn, Pb, whereas the corrosive gas comprises corrosive components, e.g. comprises one or more of Cl, K, Na, Zn and Pb.
  • less-corrosive gas can be understood as gases that provide less corrosion on the end superheater.
  • the reactor is fired from the right-hand side with a secondary fuel (18).
  • the firing does not follow the direction of the transport of refuse in the reactor, and as a result the less-corrosive gas flow as the output from said reactor is counter current, as indicated with the arrow 6.
  • the reactor is located at the end of the transportation direction of the refuse, which is discharged directly from the grate into the reactor.
  • the firing of the reactor can take place by means of a burner (19), which can be fired with said secondary fuel (18), i.e. the burner can be fired with any combination of oil, gas, coal, biomass, air and a selected waste or refuse fraction.
  • said secondary fuel in addition, or as an alternative, is supplied directly to the reactor instead. Since the reactor is fired, it reaches a higher temperature as compared to a reactor with no firing. This heat is needed to burn out the volatiles and to sinter the waste slag, trace and heavy metal species. This can be considered as a post-treatment process, i.e. the boiler or waste incinerator is combined with the reactor.

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)
EP06809447A 2005-09-30 2006-09-29 A boiler producing steam from flue gases with high electrical efficiency and improved slag quality Withdrawn EP1934526A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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 (1)

Publication Number Publication Date
EP1934526A1 true EP1934526A1 (en) 2008-06-25

Family

ID=37745895

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06809447A Withdrawn EP1934526A1 (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 (ja)
EP (1) EP1934526A1 (ja)
JP (1) JP5053279B2 (ja)
KR (1) KR101029906B1 (ja)
CN (1) CN101287950B (ja)
CA (1) CA2624054C (ja)
NO (1) NO20081542L (ja)
WO (1) WO2007036914A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7334345B2 (en) * 2004-04-02 2008-02-26 Skill Associates, Inc. Biomass converters and processes
NL2007384C2 (nl) 2011-09-09 2013-03-12 Ppm Engineering B V Systeem en werkwijze voor het verpakken van gedoseerde hoeveelheden vaste medicijnen.
FR3012578B1 (fr) * 2013-10-24 2015-12-11 Suez Environnement Procede et installation de valorisation energetique de dechets
WO2016147023A1 (en) * 2015-03-13 2016-09-22 Babcock & Wilcox Vølund A/S Incineration plant with superheater
ES2699192T3 (es) * 2016-01-12 2019-02-07 Hitachi Zosen Inova Ag Procedimiento y dispositivo para generar vapor sobrecalentado por medio del calor generado en la caldera de una instalación de combustión
WO2020140337A1 (zh) * 2018-12-30 2020-07-09 上海康恒环境股份有限公司 一种高温高压垃圾焚烧锅炉
CN111534654A (zh) * 2020-05-26 2020-08-14 澄江磷化工金龙有限责任公司 矿渣收集池的蒸汽回收综合利用系统

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Also Published As

Publication number Publication date
CA2624054C (en) 2012-03-27
JP2009510384A (ja) 2009-03-12
WO2007036914A1 (en) 2007-04-05
CN101287950A (zh) 2008-10-15
JP5053279B2 (ja) 2012-10-17
KR20080094656A (ko) 2008-10-23
KR101029906B1 (ko) 2011-04-18
NO20081542L (no) 2008-06-25
US20090050076A1 (en) 2009-02-26
CA2624054A1 (en) 2007-04-05
CN101287950B (zh) 2012-09-26

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