CA1290988C - Method of combustion for fluidized bed incinerators - Google Patents
Method of combustion for fluidized bed incineratorsInfo
- Publication number
- CA1290988C CA1290988C CA000528960A CA528960A CA1290988C CA 1290988 C CA1290988 C CA 1290988C CA 000528960 A CA000528960 A CA 000528960A CA 528960 A CA528960 A CA 528960A CA 1290988 C CA1290988 C CA 1290988C
- Authority
- CA
- Canada
- Prior art keywords
- fluidized bed
- combustion
- refuse
- incinerator body
- air
- 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.)
- Expired - Fee Related
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
- F23G5/30—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
Abstract
ABSTRACT OF THE DISCLOSURE
A method of controlling the combustion in the fluidized bed for fluidized bed incinerators for disposing of refuse such as municipal wastes is disclosed. According to this invention method, a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal wastes and a fluidlzlng 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 fur-nace body, thus achieving effective control over drying, combus-tion, and pyrolysis of the refuse.
A method of controlling the combustion in the fluidized bed for fluidized bed incinerators for disposing of refuse such as municipal wastes is disclosed. According to this invention method, a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal wastes and a fluidlzlng 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 fur-nace body, thus achieving effective control over drying, combus-tion, and pyrolysis of the refuse.
Description
1 2~0~B
This invention relates to a method of combustion for fluidized bed incinerators for disposing of refuse such as muni-cipal 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 dif-fuser which is provided within the fluidized bed incinerator body (called "furnace bodyll hereinafter), as they are thrown there-onto, both by means of the primary air that is in;ected from said air diffuser. 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 gener-ated in the fluidized bed in afterburning (called "afterburning chamberll hereinafter) with the secondary air introduced there-into. The exhaust gas that has been generated in the afterburn-ing chamber and in the fluidized bed ls discharged out of thefurnace 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. However, due to the fact that such properties of refuse as calorific value, water content, and size of lumps are changing from moment to moment, maintenance of stable combustion ls difflcult. Though this difficulty can theoretically be overcome by controlling the feeding rates of the primary and the secondary airs, but, because of the instantaneous changes in the combustion state, such controlling, hence mainte-nance of stable combustion, has been difficult. Especially as the temperature of the fluidized bed becomes higher, the drying, pyrolysis, and combustion of refuse tend to be more vigorous, and as these reactions become more vigorous, the amount of the unburnt gas becomes greater, giving rise to the problem of increasing nitrogen oxides (called "NOx hereinafter).
., ~ -- 1 -- ~i ~ 2 9~
This invention solves these problems mentioned above. Thus, the present invention provides a method of combustion for fluidized bed incinerators that is capable of controlling the rise of the temperature of the fluidized bed, thereby making the drying, pyrolysis, and combustion of refuse sluggish and stabilized.
The present invention also provides generation of unburnt gas and to decrease NOx.
According to one aspect of the present invention there is provided a method of controlling combustion for a fluidized bed incineratonr including: (a) fluidizing refuse and a fluidizing medium with primary air in an incinerator body so as to form a fluidized bed and to combust the refuse primary air being supplied into the incinerator body by air diffuser means in the incinerator body; ~b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step tb~ in the incinerator body; (d) introducing a part of the discharged exhaust gas of step (c) to the incinerator body above the fluidized bed and to the primary air.
The present invention also provides a method of controlling combustion for a fluidized bed incinerator, including: (a) fluidizing refuse and a fluidizing medium with primary air so as to form a fluidized bed and to combust the refuse the primary air being supplied into the incinerator body by air diffuser means provided in the incinerator body: (b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step (b) out of the incinerator body; and (e) introducing a part of the discharged exhaust gas of step (c) to the fluidized bed and the secondary air.
According to this invention method, a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal ~ x9()9~
wastes and a fluidizing medium such as sand with primary air; the pyrolysis gas generated in said combustion is burnt with the secondary air in the upper, or the freeboard, space of the incinerator body; the gas generated in said secondary combustion is discharged out of the incinerator body as exhaust; and a part of said discharged exhaust gas is returned to the incinerator body, thus achieving effective control over drying, combustion and pyrolysis o~ the refuse. Suitably the primary air is injected into the incinerator body by means of the air diffuser provided within the fluidized bed. Preferably the part of the discharged exhaust is returned to the incinerator body by means of the air diffuser.
The present invention will be further illustrated by way of the accompanying drawings, in which:
Fig.l is a schematic diagram showing an example of fluidized bed incinerator piping system to practice the method of this invention; and Fig. 2 is a schematic diagram showing another example of fluidized bed incinerator piping system to practice the method of this invention.
- 2a -~,;
~l 2909~;38 As shown in ~ig. l, the fluidized hed incil1erator 1 is e~uipped with an air diffuser comprising a plurality of air diffuser tubes Z, whose duty it is bol.h to form a fl\Jidized bed 3 out of the substances to be incinerated a such as mullicipal wastes (tlle refuse) and a fluidizing medium b such as sand (the fluid-izind rnedium) and to burn the refuse therein with the primary air said air dif-fuser 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 ~larallel 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 ~ody above and over the fluidized bed 3 serves as the secondary combus-tion chalnber (afterburning chamber) 7 in which to burn the pYrolysis gas gener-ated in the ~luidized bed 3.
In the top of the furnace body, there provided Js an uptake 9 to lead the exhaust gas discharged out of the afterburnin8 chamber 7 to a stack 6 through a gas cooler 10, a gas clean-up unit 11 such as an electrostatic precip-il:ator, and an in(l~lced draft fan 12 in said order.
To the afterburning chamber 7, there connected is a secondary air charg-ing tube 14 through a secondary air blower 13 to supplY the secondary air there-into. Also provided to the afterburing chamber 7 are a refuse char8ing port 15 and a fluidizirlg medium charging port 20, respectively throu8h which the refuse a and the fluidizin8 medium b are thrown thereinto.
Furthermore, for the purpose of recirculatin8 a part of the exhaust gas once dischar8ed out of the furnace body, an exhaust returning tube 16 is pro-vided 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 Z1 at a place down-stream to the exhaust circulator fan 17. A branch pipe 10 that branches off the exhaust returnin8 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 1 ~9(~988 up-trPam t,n ~,he primary air blqwer 5 S`Q a3 to ,uFply the Qxhau~ ~a~ t,n t~h(3 ~ir difruser tubes 2. To the branch pipe 10, there provided is a valve 19.
Beneath the fluidized bed 3, there formed is a packed bed 4 made up of tl,e colnbustion residue c of re~use a and the fluidizing medium_. At the bottom of the furnace body, there provided is a screw conveyor 22 to take out the com-bustion residue _and the fluidizing medium _; the combustion residue c and the rluidi7iTlg medium b taken out of the furllace body therebY are separated froln eaGh otller by tile separator 2~, the fluidizing medium b returning into the furnace body thro-l~h a returnin8 line then through the charging port 20.
In the arrangement described above, a part of the exllaust gas that has been discharged out of the afterburning chamber 7, cooled down to generally below 3U0 ~C in the gas cooler 10, and treated for dust and the like in the 8as clean-up unit 10 is fed either to the afterburnig chamber 7 or to the fluidized bed 3 or to the both, the proportion of said returnin8 gas being 10 to 30 % of the dischar~ed exhaust ~as.
This is because a deficiency in the amount of the fed back exhaust will result in lnsufficient controlling of combustion, whereas an excess thereln will result in arl over(olltrolling. That is to say, the exhaust gas supplied to the air diffuser tubes 2 toBether with the primarY air decreases the oxygen content of the primary air and increases the gas volume in the fluidized bed 3, thus lowerillg the telnperature of the fluidized bed 3, hence makin8 the dryin8, pyro-lysis, and combustion of the refuse more slu88ish, and consequently makin8 the combustion stabi I ized.
In this case, since the exhaust has been cooled in the ~as cooler 10, the temPerature of the fluidized bed 3 is decreased, stabilizing combustion the easier. Also, since the flame temperature of the afterburni~ chamber 7 is con-trolled by the fed back exhaust, the temperature of the fluidized bed 3 is in-directly controlled, aiding in stabilization of combustion in the fluidized bed 3.
Furthermore, owing to the supply of the exhaust gas, NOx is decreased.
~2~09~
As for another method of returning a part of the exhaust to 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.
As for yet another method of returning a part of the exhaust to the afterburning chamber 7, the exhaust returning tube 16 may be connected to the secondary air charging tube 14 at a place upstream to the secondary air blower 13 as shown in Flg. 2.
Furthermore, the amount of the exhaust gas to be fed back may be automatically controlled through operating the valve 19 and the vale 21 by measuring the temperature of the fluldized bed 3.
Thus, it will be appreciated that the present invention will develop excellent effects as follows~ ) Owing to the part of the exhaust gas returned to the furnace body, the combustion in the fluidized bed is made more sluggish, the rise of the temperature of the fluidized bed controlled, and the drying, pyrolysis, and combustion of refuse in the fluidized bed made more sluggish and stabilized; and (2) Owing to the drying, pyrolysis, and combustion in the fluidized bed made more sluggish thus, generation of unburnt gas is prevented and NOx decreased.
This invention relates to a method of combustion for fluidized bed incinerators for disposing of refuse such as muni-cipal 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 dif-fuser which is provided within the fluidized bed incinerator body (called "furnace bodyll hereinafter), as they are thrown there-onto, both by means of the primary air that is in;ected from said air diffuser. 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 gener-ated in the fluidized bed in afterburning (called "afterburning chamberll hereinafter) with the secondary air introduced there-into. The exhaust gas that has been generated in the afterburn-ing chamber and in the fluidized bed ls discharged out of thefurnace 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. However, due to the fact that such properties of refuse as calorific value, water content, and size of lumps are changing from moment to moment, maintenance of stable combustion ls difflcult. Though this difficulty can theoretically be overcome by controlling the feeding rates of the primary and the secondary airs, but, because of the instantaneous changes in the combustion state, such controlling, hence mainte-nance of stable combustion, has been difficult. Especially as the temperature of the fluidized bed becomes higher, the drying, pyrolysis, and combustion of refuse tend to be more vigorous, and as these reactions become more vigorous, the amount of the unburnt gas becomes greater, giving rise to the problem of increasing nitrogen oxides (called "NOx hereinafter).
., ~ -- 1 -- ~i ~ 2 9~
This invention solves these problems mentioned above. Thus, the present invention provides a method of combustion for fluidized bed incinerators that is capable of controlling the rise of the temperature of the fluidized bed, thereby making the drying, pyrolysis, and combustion of refuse sluggish and stabilized.
The present invention also provides generation of unburnt gas and to decrease NOx.
According to one aspect of the present invention there is provided a method of controlling combustion for a fluidized bed incineratonr including: (a) fluidizing refuse and a fluidizing medium with primary air in an incinerator body so as to form a fluidized bed and to combust the refuse primary air being supplied into the incinerator body by air diffuser means in the incinerator body; ~b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step tb~ in the incinerator body; (d) introducing a part of the discharged exhaust gas of step (c) to the incinerator body above the fluidized bed and to the primary air.
The present invention also provides a method of controlling combustion for a fluidized bed incinerator, including: (a) fluidizing refuse and a fluidizing medium with primary air so as to form a fluidized bed and to combust the refuse the primary air being supplied into the incinerator body by air diffuser means provided in the incinerator body: (b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step (b) out of the incinerator body; and (e) introducing a part of the discharged exhaust gas of step (c) to the fluidized bed and the secondary air.
According to this invention method, a fluidized bed in which to burn the refuse is formed out of the refuse such as municipal ~ x9()9~
wastes and a fluidizing medium such as sand with primary air; the pyrolysis gas generated in said combustion is burnt with the secondary air in the upper, or the freeboard, space of the incinerator body; the gas generated in said secondary combustion is discharged out of the incinerator body as exhaust; and a part of said discharged exhaust gas is returned to the incinerator body, thus achieving effective control over drying, combustion and pyrolysis o~ the refuse. Suitably the primary air is injected into the incinerator body by means of the air diffuser provided within the fluidized bed. Preferably the part of the discharged exhaust is returned to the incinerator body by means of the air diffuser.
The present invention will be further illustrated by way of the accompanying drawings, in which:
Fig.l is a schematic diagram showing an example of fluidized bed incinerator piping system to practice the method of this invention; and Fig. 2 is a schematic diagram showing another example of fluidized bed incinerator piping system to practice the method of this invention.
- 2a -~,;
~l 2909~;38 As shown in ~ig. l, the fluidized hed incil1erator 1 is e~uipped with an air diffuser comprising a plurality of air diffuser tubes Z, whose duty it is bol.h to form a fl\Jidized bed 3 out of the substances to be incinerated a such as mullicipal wastes (tlle refuse) and a fluidizing medium b such as sand (the fluid-izind rnedium) and to burn the refuse therein with the primary air said air dif-fuser 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 ~larallel 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 ~ody above and over the fluidized bed 3 serves as the secondary combus-tion chalnber (afterburning chamber) 7 in which to burn the pYrolysis gas gener-ated in the ~luidized bed 3.
In the top of the furnace body, there provided Js an uptake 9 to lead the exhaust gas discharged out of the afterburnin8 chamber 7 to a stack 6 through a gas cooler 10, a gas clean-up unit 11 such as an electrostatic precip-il:ator, and an in(l~lced draft fan 12 in said order.
To the afterburning chamber 7, there connected is a secondary air charg-ing tube 14 through a secondary air blower 13 to supplY the secondary air there-into. Also provided to the afterburing chamber 7 are a refuse char8ing port 15 and a fluidizirlg medium charging port 20, respectively throu8h which the refuse a and the fluidizin8 medium b are thrown thereinto.
Furthermore, for the purpose of recirculatin8 a part of the exhaust gas once dischar8ed out of the furnace body, an exhaust returning tube 16 is pro-vided 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 Z1 at a place down-stream to the exhaust circulator fan 17. A branch pipe 10 that branches off the exhaust returnin8 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 1 ~9(~988 up-trPam t,n ~,he primary air blqwer 5 S`Q a3 to ,uFply the Qxhau~ ~a~ t,n t~h(3 ~ir difruser tubes 2. To the branch pipe 10, there provided is a valve 19.
Beneath the fluidized bed 3, there formed is a packed bed 4 made up of tl,e colnbustion residue c of re~use a and the fluidizing medium_. At the bottom of the furnace body, there provided is a screw conveyor 22 to take out the com-bustion residue _and the fluidizing medium _; the combustion residue c and the rluidi7iTlg medium b taken out of the furllace body therebY are separated froln eaGh otller by tile separator 2~, the fluidizing medium b returning into the furnace body thro-l~h a returnin8 line then through the charging port 20.
In the arrangement described above, a part of the exllaust gas that has been discharged out of the afterburning chamber 7, cooled down to generally below 3U0 ~C in the gas cooler 10, and treated for dust and the like in the 8as clean-up unit 10 is fed either to the afterburnig chamber 7 or to the fluidized bed 3 or to the both, the proportion of said returnin8 gas being 10 to 30 % of the dischar~ed exhaust ~as.
This is because a deficiency in the amount of the fed back exhaust will result in lnsufficient controlling of combustion, whereas an excess thereln will result in arl over(olltrolling. That is to say, the exhaust gas supplied to the air diffuser tubes 2 toBether with the primarY air decreases the oxygen content of the primary air and increases the gas volume in the fluidized bed 3, thus lowerillg the telnperature of the fluidized bed 3, hence makin8 the dryin8, pyro-lysis, and combustion of the refuse more slu88ish, and consequently makin8 the combustion stabi I ized.
In this case, since the exhaust has been cooled in the ~as cooler 10, the temPerature of the fluidized bed 3 is decreased, stabilizing combustion the easier. Also, since the flame temperature of the afterburni~ chamber 7 is con-trolled by the fed back exhaust, the temperature of the fluidized bed 3 is in-directly controlled, aiding in stabilization of combustion in the fluidized bed 3.
Furthermore, owing to the supply of the exhaust gas, NOx is decreased.
~2~09~
As for another method of returning a part of the exhaust to 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.
As for yet another method of returning a part of the exhaust to the afterburning chamber 7, the exhaust returning tube 16 may be connected to the secondary air charging tube 14 at a place upstream to the secondary air blower 13 as shown in Flg. 2.
Furthermore, the amount of the exhaust gas to be fed back may be automatically controlled through operating the valve 19 and the vale 21 by measuring the temperature of the fluldized bed 3.
Thus, it will be appreciated that the present invention will develop excellent effects as follows~ ) Owing to the part of the exhaust gas returned to the furnace body, the combustion in the fluidized bed is made more sluggish, the rise of the temperature of the fluidized bed controlled, and the drying, pyrolysis, and combustion of refuse in the fluidized bed made more sluggish and stabilized; and (2) Owing to the drying, pyrolysis, and combustion in the fluidized bed made more sluggish thus, generation of unburnt gas is prevented and NOx decreased.
Claims (4)
1. A method of controlling combustion for a fluidized bed incineratonr including: (a) fluidizing refuse and a fluidizing medium with primary air in an incinerator body so as to form a fluidized bed and to combust the refuse,primary air being supplied into the incinerator body by air diffuser means in the incinerator body; (b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step (b) in the incinerator body; (d) introducing a part of the discharged exhaust gas of step (c) to the incinerator body above the fluidized bed and to the primary air.
2. A method of controlling combustion for a fluidized bed incinerator, including: (a) fluidizing refuse and a fluidizing medium with primary air so as to form a fluidized bed and to combust the refuse the primary air being supplied into the incinerator body by air diffuser means provided in the incinerator body: (b) burning pyrolysis gas generated upon combustion of step (a) with a secondary air in the incinerator body; and (c) discharging the exhaust gas produced upon combustion of step (b) out of the incinerator body; and (d) introducing a part of the discharged exhaust gas of step (c) to the fluidized bed and the secondary air.
3. The method of claim 1 wherein the primary air is injected into the incinerator body by means of the air diffuser provided within the fluidized bed.
4. The method of claim 3 wherein the part of the discharged exhaust is returned to the incinerator body by means of the air diffuser.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2200286A JPS62182516A (en) | 1986-02-05 | 1986-02-05 | Burning method for fluidized bed type incinerator |
| JP022002/1986 | 1986-02-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1290988C true CA1290988C (en) | 1991-10-22 |
Family
ID=12070798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000528960A Expired - Fee Related CA1290988C (en) | 1986-02-05 | 1987-02-04 | Method of combustion for fluidized bed incinerators |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0237712B1 (en) |
| JP (1) | JPS62182516A (en) |
| CA (1) | CA1290988C (en) |
| DE (2) | DE237712T1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910115A (en) * | 2016-04-19 | 2016-08-31 | 中石化炼化工程（集团）股份有限公司 | Waste liquid incineration device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3712801A1 (en) * | 1987-04-15 | 1988-11-03 | Babcock Werke Ag | METHOD FOR BURNING INSB. SALTY BROWN COAL |
| US5044287A (en) * | 1989-06-16 | 1991-09-03 | Ebara Corporation | Method of controlling combustion in a fluidized bed furnace |
| JP2957627B2 (en) * | 1990-03-15 | 1999-10-06 | 大阪瓦斯株式会社 | Municipal waste incineration melting equipment |
| WO2002090829A1 (en) * | 2001-05-09 | 2002-11-14 | Fortum Oyj | Method and arrangement for reducing nitrogen oxide emissions froma fluidized bed combustion |
| EP1500875A4 (en) * | 2002-05-02 | 2007-07-11 | Jfe Eng Corp | Method of operating waste incinerator and waste incinerator |
| CN105351944B (en) * | 2015-12-10 | 2017-12-08 | 重庆三峰卡万塔环境产业有限公司 | A kind of improved grate furnace garbage combustion device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2037561A1 (en) * | 1970-07-29 | 1972-02-03 | Metallgesellschaft AG, 6000 Frank fürt | Sludge incineration |
| 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 |
| DK310979A (en) * | 1978-08-04 | 1980-02-05 | Energy Equip | PROCEDURE FOR CONTROLING THE OPERATION OF A FLUIDIZED BOTTLE LIFTING PLANT AND USING MEASURES IN THE IMPLEMENTATION OF THE PROCEDURE |
| JPS56162312A (en) * | 1980-05-19 | 1981-12-14 | Hitachi Ltd | Inhibiting and controlling device for nox of incinerator |
| EP0049592B1 (en) * | 1980-10-06 | 1987-08-19 | The Energy Equipment Company Limited | Fluidised bed combustion units |
| JPS6046324A (en) * | 1983-08-24 | 1985-03-13 | Kawasaki Steel Corp | Continuous annealing equipment |
-
1986
- 1986-02-05 JP JP2200286A patent/JPS62182516A/en active Pending
-
1987
- 1987-01-16 EP EP19870100514 patent/EP0237712B1/en not_active Expired
- 1987-01-16 DE DE1987100514 patent/DE237712T1/en active Pending
- 1987-01-16 DE DE8787100514T patent/DE3762681D1/en not_active Expired - Fee Related
- 1987-02-04 CA CA000528960A patent/CA1290988C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910115A (en) * | 2016-04-19 | 2016-08-31 | 中石化炼化工程（集团）股份有限公司 | Waste liquid incineration device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE237712T1 (en) | 1988-02-04 |
| JPS62182516A (en) | 1987-08-10 |
| EP0237712B1 (en) | 1990-05-09 |
| DE3762681D1 (en) | 1990-06-13 |
| EP0237712A1 (en) | 1987-09-23 |
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