EP0237712A1 - Verfahren zur Verbrennung für Wirbelbettfeuerungen - Google Patents

Verfahren zur Verbrennung für Wirbelbettfeuerungen Download PDF

Info

Publication number: EP0237712A1
Authority: EP; European Patent Office
Prior art keywords: combustion; fluidized bed; furnace body; refuse; exhaust
Prior art date: 1986-02-05
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

EP19870100514

Other languages

English (en)

French (fr)

Other versions

EP0237712B1 (de

Inventor

Minoru Narisoko

Satoshi Inoue

Sadahiro Yamada

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.)

IHI Corp

Original Assignee

Ishikawajima Harima Heavy Industries Co Ltd

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.)

1986-02-05

Filing date

1987-01-16

Publication date

1987-09-23

1987-01-16 Application filed by Ishikawajima Harima Heavy Industries Co Ltd filed Critical Ishikawajima Harima Heavy Industries Co Ltd

1987-09-23 Publication of EP0237712A1 publication Critical patent/EP0237712A1/de

1990-05-09 Application granted granted Critical

1990-05-09 Publication of EP0237712B1 publication Critical patent/EP0237712B1/de

Status Expired legal-status Critical Current

Images

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
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
- 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
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage

Definitions

This invention relates to a method of combustion for fluidized bed incinerators for disposing of refuse such as municipal wastes. More particularly, it is concerned with a method of stabilizing combustion by recirculating the exhaust gas.
Fluidized bed incinerators are constructed in such a way that the substances such as municipal wastes that are to be incinerated (called “refuse” hereinafter) are incinerated away in a fluidized bed, formed together with a fluidizing medium such as sand (called “fluidizing medium” hereinafter) over the air diffuser which is provided within the fluidized bed incinerator body (called “furnace body” hereinafter), as they are thrown thereonto, both by means of the primary air that is injected from said air diffuser.
a fluidizing medium such as sand
the freeboard part of the furnace body above and over said fluidized bed constitutes a combustion chamber in which to burn the pyrolysis, or the thermal decomposition, gas generated in the fluidized bed in afterburning (called “afterburning chamber” hereinafter) with the secondary air introduced thereinto.
the exhaust gas that has been generated in the afterburning chamber and in the fluidized bed is discharged out of the furnace body from the furnace top, cleaned up, then released to the atmosphere.
the conventional method of combustion for such fluidized bed incinerator is simply to provide the primary and the secondary airs to burn the refuse.
properties of refuse as calorific value, water content, and size of lumps are changing from moment to moment, maintenance of stable combustion is difficult.
a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal wastes and a fluidizing medium by the primary air ; the pyrolysis gas generated in said combustion is burnt with the secondary air in the upper, or the freeboard, space of the furnace body ; the gas generated in said secondary combustion is discharged out of the furnace body as an exhaust ; and a part of said discharged exhaust gas is returned to the furnace body, thus achieving effective control over drying, combustion, and pyrolysis of the refuse.
the fluidized bed incinerator 1 is equipped with an air diffuser comprising a plurality of air diffuser tubes 2, whose duty it is both to form a fluidized bed 3 out of the substances to be incinerated a such as municipal wastes (the refuse) and a fluidizing medium b such as sand (the fluidizing medium) and to burn the refuse therein with the primary air sand air diffuser tubes 2 inject thereinto.
the air diffuser tubes 2 are positioned in the lower part of the incinerator body (the furnace body) in a plural number and in parallel to each other, each tube having a large number of nozzles from which to blow the primary air in.
a primary air charging tube 6 is connected to the air diffuser tubes 2 through a primary air blower 5.
the freeboard space of the furnace body above and over the fluidized bed 3 serves as the secondary combustion chamber (afterburning chamber) 7 in which to burn the pyrolysis gas generated in the fluidized bed 3.
an uptake 9 to lead the exhaust gas discharged out of the afterburning chamber 7 to a stack 8 through a gas cooler 10, a gas clean-up unit 11 such as an electrostatic precipitator, and an induced draft fan 12 in said order.
a secondary air charging tube 14 To the afterburning chamber 7, there is connected a secondary air charging tube 14 through a secondary air blower 13 to supply the secondary air thereinto. Also provided to the afterburning chamber 7 are a refuse charging port 15 and a fluidizing medium charging port 20, respectively through which the refuse a and the fluidizing medium b are thrown thereinto.
an exhaust returning tube 16 is provided to the uptake 9 at a place downstream to the induced draft fan 12 to be connected to the afterburning chamber 7 through an exhaust circulator fan 17, said exhaust returning tube 16 being equipped with a valve 21 at a place downstream of the exhaust circulator fan 17.
a branch pipe 18 that branches off the exhaust returning tube 16 at a place between the valve 21 and the exhaust circulator fan 17 is connected to the primary air charging tube 6 at a place upstream of the primary air blower 5 so as to supply the exhaust gas to the air diffuser tubes 2.
a packed bed 4 made up of the combustion residue c of refuse a and the fluidizing medium b .
a screw conveyor 22 to take out the combustion residue c and the fluidizing medium b ; the combustion residue c and the fluidizing medium b taken out of the furnace body thereby are separated from each other by the separator 23, the fluidizing medium b returning into the furnace body through a returning line, then through the charging port 20.
the temperature of the fluidized bed 3 is decreased, and the combustion is stabilized more easily. Also, since the flame temperature of the afterburning chamber 7 is controlled by the fed back exhaust, the temperature of the fluidized bed 3 is indirectly controlled, aiding stabilization of combustion in the fluidized bed 3.
the branch pipe 18 of the exhaust returning tube 16 may be led directly into the fluidized bed 3 as shown in Fig. 2.
the exhaust returning tube 16 may be connected to the secondary air charging tube 14 at a place upstream of the secondary air blower 13 as shown in Fig. 2.
the amount of the exhaust gas to be fed back may be automatically controlled through operating the valve 19 and the valve 21 by measuring the temperature of the fluidized bed 3.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Incineration Of Waste (AREA)
Fluidized-Bed Combustion And Resonant Combustion (AREA)

EP19870100514 1986-02-05 1987-01-16 Verfahren zur Verbrennung für Wirbelbettfeuerungen Expired EP0237712B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2200286A JPS62182516A (ja)	1986-02-05	1986-02-05	流動床式焼却炉の燃焼方法
JP22002/86		1986-02-05

Publications (2)

Publication Number	Publication Date
EP0237712A1 true EP0237712A1 (de)	1987-09-23
EP0237712B1 EP0237712B1 (de)	1990-05-09

Family

ID=12070798

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19870100514 Expired EP0237712B1 (de)	1986-02-05	1987-01-16	Verfahren zur Verbrennung für Wirbelbettfeuerungen

Country Status (4)

Country	Link
EP (1)	EP0237712B1 (de)
JP (1)	JPS62182516A (de)
CA (1)	CA1290988C (de)
DE (2)	DE237712T1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0286845A1 (de) *	1987-04-15	1988-10-19	Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft	Verfahren zum Verfeuern von insb. salzhaltiger Braunkohle
EP0413104A1 (de) *	1989-06-16	1991-02-20	Ebara Corporation	Verfahren zur Verbrennungsregelung in einer Feuerung
EP0446888A2 (de) *	1990-03-15	1991-09-18	Osaka Gas Co., Ltd.	Verbrennungs-Schmelzanlage zur Stadt-Müllbeseitigung
WO2002090829A1 (en) *	2001-05-09	2002-11-14	Fortum Oyj	Method and arrangement for reducing nitrogen oxide emissions froma fluidized bed combustion
EP1500875A1 (de) *	2002-05-02	2005-01-26	JFE Engineering Corporation	Verfahren zum betrieb einer abfallverbrennungsanlage und abfallverbrennungsanlage
CN105351944A (zh) *	2015-12-10	2016-02-24	重庆三峰卡万塔环境产业有限公司	一种改进的炉排炉垃圾焚烧装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN105910115B (zh) *	2016-04-19	2018-12-11	中石化炼化工程（集团）股份有限公司	一种废液焚烧装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2037561A1 (de) *	1970-07-29	1972-02-03	Metallgesellschaft AG, 6000 Frank fürt	Schlammverbrennung
DE2410477A1 (de) *	1973-11-21	1975-05-22	Babcock Hitachi Kk	Verfahren zur verbrennung von industrieabfall
CH577144A5 (en) *	1974-10-03	1976-06-30	Mustad Stoperi & Mek Verksted	Low grade fuel burning fluidised bed - uses fluidisation gas mixture made from primary air and combustion gases
US4295817A (en) *	1978-08-04	1981-10-20	The Energy Equipment Co. Ltd.	Method and means for controlling the operation of fluidized bed combustion apparatus
EP0049592A1 (de) *	1980-10-06	1982-04-14	The Energy Equipment Company Limited	Wirbelbett-Verbrennungsanlagen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS56162312A (en) *	1980-05-19	1981-12-14	Hitachi Ltd	Inhibiting and controlling device for nox of incinerator
JPS6046324A (ja) *	1983-08-24	1985-03-13	Kawasaki Steel Corp	連続焼なまし炉設備

1986
- 1986-02-05 JP JP2200286A patent/JPS62182516A/ja active Pending
1987
- 1987-01-16 DE DE1987100514 patent/DE237712T1/de active Pending
- 1987-01-16 DE DE8787100514T patent/DE3762681D1/de not_active Expired - Lifetime
- 1987-01-16 EP EP19870100514 patent/EP0237712B1/de not_active Expired
- 1987-02-04 CA CA000528960A patent/CA1290988C/en not_active Expired - Lifetime

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2037561A1 (de) *	1970-07-29	1972-02-03	Metallgesellschaft AG, 6000 Frank fürt	Schlammverbrennung
DE2410477A1 (de) *	1973-11-21	1975-05-22	Babcock Hitachi Kk	Verfahren zur verbrennung von industrieabfall
CH577144A5 (en) *	1974-10-03	1976-06-30	Mustad Stoperi & Mek Verksted	Low grade fuel burning fluidised bed - uses fluidisation gas mixture made from primary air and combustion gases
US4295817A (en) *	1978-08-04	1981-10-20	The Energy Equipment Co. Ltd.	Method and means for controlling the operation of fluidized bed combustion apparatus
EP0049592A1 (de) *	1980-10-06	1982-04-14	The Energy Equipment Company Limited	Wirbelbett-Verbrennungsanlagen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0286845A1 (de) *	1987-04-15	1988-10-19	Deutsche Babcock Energie- und Umwelttechnik Aktiengesellschaft	Verfahren zum Verfeuern von insb. salzhaltiger Braunkohle
EP0413104A1 (de) *	1989-06-16	1991-02-20	Ebara Corporation	Verfahren zur Verbrennungsregelung in einer Feuerung
US5044287A (en) *	1989-06-16	1991-09-03	Ebara Corporation	Method of controlling combustion in a fluidized bed furnace
EP0446888A2 (de) *	1990-03-15	1991-09-18	Osaka Gas Co., Ltd.	Verbrennungs-Schmelzanlage zur Stadt-Müllbeseitigung
EP0446888A3 (en) *	1990-03-15	1992-07-22	Osaka Gas Co., Ltd	Incinerating-fusing system for city refuse disposal
WO2002090829A1 (en) *	2001-05-09	2002-11-14	Fortum Oyj	Method and arrangement for reducing nitrogen oxide emissions froma fluidized bed combustion
EP1500875A1 (de) *	2002-05-02	2005-01-26	JFE Engineering Corporation	Verfahren zum betrieb einer abfallverbrennungsanlage und abfallverbrennungsanlage
EP1500875A4 (de) *	2002-05-02	2007-07-11	Jfe Eng Corp	Verfahren zum betrieb einer abfallverbrennungsanlage und abfallverbrennungsanlage
CN105351944A (zh) *	2015-12-10	2016-02-24	重庆三峰卡万塔环境产业有限公司	一种改进的炉排炉垃圾焚烧装置

Also Published As

Publication number	Publication date
DE3762681D1 (de)	1990-06-13
DE237712T1 (de)	1988-02-04
EP0237712B1 (de)	1990-05-09
JPS62182516A (ja)	1987-08-10
CA1290988C (en)	1991-10-22

Publication	Publication Date	Title
US5156099A (en)	1992-10-20	Composite recycling type fluidized bed boiler
CA2106746C (en)	2000-01-18	Ash melting furnace
CA1268613A (en)	1990-05-08	Method of catalystless denitrification for fluidized bed incinerators
EP0597683A2 (de)	1994-05-18	Wirbelschichtreaktor, -system und -verfahren
EP0766041B1 (de)	2002-01-16	Thermischer wirbelschichtreaktor
JPS6217123B2 (de)	1987-04-16
JPH0370124B2 (de)	1991-11-06
US4598649A (en)	1986-07-08	Particle fuel diversion structure with dome-shaped cavity
US5237963A (en)	1993-08-24	System and method for two-stage combustion in a fluidized bed reactor
US4291635A (en)	1981-09-29	Apparatus for feeding fluidized bed incinerator, and method of autogenic operation of same
EP0431163B1 (de)	1995-12-06	Wirbelbettofen mit verbundumlauf
US4681065A (en)	1987-07-21	Multibed fluidized bed boiler
EP0237712A1 (de)	1987-09-23	Verfahren zur Verbrennung für Wirbelbettfeuerungen
JP2764382B2 (ja)	1998-06-11	低級燃料のための循環流動床反応器
CN113574320B (zh)	2024-03-08	焚烧炉
EP0411133B1 (de)	1994-08-24	Verbrennungsverfahren und regelungsverfahren dazu
JP2642568B2 (ja)	1997-08-20	ごみ焼却炉の二次燃焼方法
EP0685688B1 (de)	2000-11-15	Verbrennungsverfahren und -vorrichtung
JPS6025687B2 (ja)	1985-06-19	流動床焼却器
JP2937737B2 (ja)	1999-08-23	部分燃焼を伴う流動層燃焼方法及び装置
JP3014953B2 (ja)	2000-02-28	焼却炉
JPH1114029A (ja)	1999-01-22	循環流動層燃焼装置及びその運転方法
SU767456A1 (ru)	1980-09-30	Установка дл сжигани промышленных отходов
JP2948876B2 (ja)	1999-09-13	廃棄物の流動層燃焼方法
JPH08285259A (ja)	1996-11-01	流動床式廃棄物焼却炉の燃焼方法及びその装置

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1987-08-08	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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1987-11-27	EL	Fr: translation of claims filed
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