EP0595067A1 - Dispositif et procédé d'achèvement de la combustion des combustibles - Google Patents
Dispositif et procédé d'achèvement de la combustion des combustibles Download PDFInfo
- Publication number
- EP0595067A1 EP0595067A1 EP93116001A EP93116001A EP0595067A1 EP 0595067 A1 EP0595067 A1 EP 0595067A1 EP 93116001 A EP93116001 A EP 93116001A EP 93116001 A EP93116001 A EP 93116001A EP 0595067 A1 EP0595067 A1 EP 0595067A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- burn
- grate
- zone
- burnout
- area
- 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- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000446 fuel Substances 0.000 title description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 238000010304 firing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000004449 solid propellant Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 238000005194 fractionation Methods 0.000 claims description 4
- 238000005243 fluidization Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract 2
- 239000002893 slag Substances 0.000 description 20
- 239000003344 environmental pollutant Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000000428 dust Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- F23G5/08—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
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B1/00—Combustion apparatus using only lump fuel
- F23B1/16—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support
- F23B1/20—Combustion apparatus using only lump fuel the combustion apparatus being modified according to the form of grate or other fuel support using step-type grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B5/00—Combustion apparatus with arrangements for burning uncombusted material from primary combustion
- F23B5/02—Combustion apparatus with arrangements for burning uncombusted material from primary combustion in main combustion chamber
-
- 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
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
Definitions
- the invention relates to a burn-out device for grate systems, in particular step grate systems with primary air supply, in particular from areas below the individual grate levels, and secondary air supply, in particular from the area of the combustion chamber constriction in the upper area of the main combustion zone.
- the invention has for its object to achieve a burnout with the lowest possible proportion of organic substances for such solid fuels.
- an additional inflator which is pressurized with gaseous media causing the combustion, is arranged in the region of the burnout zone of the last grate stage and / or in the outflow region of the firing zone, for swirling, combustion and fractionation in coarse and fine fractions ; the inflator being arranged and operable in such a way that the fine fraction is returned to the main combustion zone for post-combustion and that this or a possibly further inflator (10), the latter ejects approximately in the region of the first, gaseous media in the interval mode of an orderly higher pressure, one of which if necessary, separate supply of the two media with different pressures (in the form of 2 or, if applicable, 10) is provided.
- the inflator can be mounted to be movable, in particular rotatable.
- a second burnout bar can also be provided.
- the fine fraction is therefore returned to the discharge via the flue gas path.
- the coarse fraction is discharged as slag in a manner known per se.
- the inert residues are divided into a pollutant-rich fraction (dust) and a low-pollutant coarse fraction (slag). After their treatment, both fractions have practically no or only very small proportions of organic substances.
- the separation of the fine and coarse fractions is obviously of great advantage for the recycling of residues.
- the whirled up and separated fine fraction is returned to the main combustion zone, the organic dust particles burn, the polluted light particles are discharged with the raw gases.
- the effect according to the invention can be significantly increased if a further inflator for the same or a different gaseous medium is provided somewhat in the region of the first one, which emits gaseous media of an order of magnitude higher pressure in the interval operation.
- the pressure of the first inflator can be, for example, 800 to 1000 mm water column, that of the interval operated, for example, up to 4 bar.
- a method for burning out solid fuels that are already in the area of the outflowing firing zone of a firing system operated with primary and secondary air is characterized in that a gaseous medium of a pressing, in particular from 800 to 1000 mm water column at a speed of 80 to 120 m / sec on the still combustible parts on the burnout section is directed in such a way that whirling up, burnout, fractionation into fine and coarse fractions and return of the fine fraction to the main combustion zone is carried out.
- an additional medium of significantly higher pressure can expediently be directed at the burnout material from the same area at intervals.
- the pulsed application of the medium of substantially higher pressure can be carried out in such a way that the supply of gaseous medium is pushed off in the manner described above.
- a common burnout bar is preferably provided, in which two pipes, a medium inner pipe for 2 to 4 bar (interval), a second medium inner pipe for the pressure (continuously) of 800 to 1000 mm water are provided.
- the nozzles will be directed vertically downwards towards the burnout zone during pulse operation, different angles (vertically downwards or angles up to, for example, 30 ° deflection with respect to the vertical) may be interesting for the medium inner pipe for continuous outflow from the nozzles , especially to facilitate the deportation during interval operation.
- Fig. 1 shows a burn-out bar for a medium pipe, which can be arranged at a variable distance, for example, possibly also rotatable, over the grate surface (burn-out zone) of a combustion system.
- the burnout bar 1 can be cooled, in particular water-cooled, and arranged across the entire grate width.
- the bar 1 consists of an inner tube 2, which is acted upon by compressed air.
- the bar is arranged across the entire grate width and has one or more rows of special air nozzles installed at a distance of approx. 5 to 30 cm, which are either arranged vertically or at any acute angle to the grate surface.
- the inner tube 2 is enclosed by a jacket tube 4, the ring cross section 5 of which contains a cooling medium or a positive action, for example Water or air has to give the bar 1 the necessary stability against thermal stresses.
- the casing tube 4 is bare or provided with a protective material, for example ramming material, to avoid corrosion and temperature stresses.
- the entire bar 1 can also be rotatably supported, so that the direction of the air outflow onto the grate can thereby be changed.
- the fine substance fraction (to be seen in FIG. 2) is again passed through the main combustion zone 7.
- the organic dust particles burn, the pollutant light particles are discharged with the raw gases.
- the interval operation is higher in order of magnitude in pressure, there is practically a "blowing off" of the fuel. It must be added that the inner tube and outer tube are rigidly connected by spacers.
- FIG. 3 shows two pipes for the discharge of gaseous media, which are arranged within a single oval pipe, which is encased by the ramming compound 6.
- the air flow with 800-1000 mm WS can be permanently blown out via a separate air supply pipe 2 with air nozzles 3; the pulse air flow (interval air flow) is blown out, for example, at 2-4 bar via its own air supply pipe 10, the air nozzles of which can also be seen at 3.
- the oval cross-section 11 of the jacket tube is clearly recognizable, and the medium-carrying tubes in turn have a circular cross-section.
- the gaseous, pressurized medium can be steam, enriched Act gases, warmed or not warmed, as well as untreated or contaminated air and / or a flue gas circulation. It is possible to install an automatic system that controls the blow-off process and can be controlled at any time via data acquisition and recording.
- the burnout zone of the grate 8 can be horizontal, oblique or curved, movable or non-movable.
- the system shown for example works as follows:
- the air nozzles 3 of the burnout bar 1 are acted upon directly or indirectly by cold, heated and / or enriched air via a blower.
- This air has, for example, a pressure of about 800 to 1000 mm water column, an air outlet speed at the nozzles of about 80 to 120 m / s, so that even combustible parts are whirled up on the burnout path of the grate 8 and can burn out.
- Via a valve-controlled automatic circuit for example, compressed air of approx.
- 2 to 4 bar is fed from the second air system to the air nozzles at intervals of around 3 to 6 minutes for short intervals, so that fine inert components and combustible light components on the fuel are blown off intensively .
- the air supply line is shunted off from 800-1000 mm water. This burning off intensifies the burning process.
- the combustible and pollutant-containing dust components are passed into the main combustion zone 7, burned out there and discharged with the flue gas stream 9 depending on their mass and size. The increased dust content is separated in the flue gas dedusting system in a known manner.
- separate air supply pipes 2 and 10 for 800-1000 mm WS or for 2-4 bar with modified jacket pipe 11 can be used for both air flows.
- the size of the pulse depends on the type of slag, the height of the bed of slag and the composition of the slag, called slag type.
- the interval depends on the rust rate and whether the material to be burned out is very rich in slag or not.
- blow-out pipe for compressed air or a so-called press medium pipe
- Blowing is again carried out across the grate width at the end of the grate, onto the burned-out slag just before it falls into the water bath.
- Conditions like the wind sifter can be separated into fine and coarse fractions.
- pipes which are to be called compressed air channels or air feeders, can be arranged outside the furnace wall. The burned parts are blown off. That is the essential.
- Temperature-resistant material can be used on the nozzles. The loss on ignition can be reduced by half compared to today's best values.
- the incoming slag is easily blown, at least with a row of nozzles or the like.
- the impulse nozzle outlets can be arranged in such a way that they briefly and strongly inflate from locations in the area of the slag shaft or in front of the slag shaft onto the burned-out material (the still glowing or no longer glowing slag). If the airflow is slightly inclined against the direction of flow in the case of countercurrent, it is inclined towards the main combustion zone in the case of direct current or medium flow, ie in the main combustion shaft against the first draft. This will the fine fraction is actually driven to the main combustion zone.
- push-off means the following: push-off can be carried out using solenoid valves.
- the continuous jet air if there is one, is pushed off each time the system is switched to pulse operation, for example by actuating a solenoid valve, so as to prevent losses to the fan (for example running in the opposite direction) being prevented. Only now is high pressure pulse air given.
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)
- Incineration Of Waste (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4236073 | 1992-10-26 | ||
| DE19924236073 DE4236073A1 (de) | 1992-10-26 | 1992-10-26 | Ausbrenneinrichtung sowie Verfahren zum Ausbrennen von Brennstoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0595067A1 true EP0595067A1 (fr) | 1994-05-04 |
Family
ID=6471353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93116001A Withdrawn EP0595067A1 (fr) | 1992-10-26 | 1993-09-30 | Dispositif et procédé d'achèvement de la combustion des combustibles |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0595067A1 (fr) |
| DE (1) | DE4236073A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0683358A1 (fr) * | 1994-05-16 | 1995-11-22 | Von Roll Ag | Méthode d'exploitation d'énergie thermique de matière à déchèts, en particulier d'ordures |
| WO1998025079A1 (fr) * | 1996-12-06 | 1998-06-11 | Metallgesellschaft Aktiengesellschaft | Grille de combustion a refroidissement par eau |
| RU2151958C1 (ru) * | 1998-12-28 | 2000-06-27 | Открытое акционерное общество "ВНИИЭТО" | Способ термического обезвреживания твердых отходов |
| EP1493967A1 (fr) * | 2003-07-03 | 2005-01-05 | VISSER & SMIT HANAB B.V. | Système d'incinération et dipositif d'injection pour celui-ci |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19648639C2 (de) * | 1996-10-10 | 1998-09-17 | Steinmueller Gmbh L & C | Verfahren zum Verbrennen von Brennstoff auf einem Rost und Rostfeuerung zur Durchführung des Verfahrens |
| SE513726C2 (sv) * | 1998-11-17 | 2000-10-30 | Kmw En Ab | Fastbränsleugn |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2010634A1 (fr) * | 1968-06-11 | 1970-02-20 | Peters Ag Claudius | |
| JPS55137416A (en) * | 1979-04-10 | 1980-10-27 | Ebara Infilco Co Ltd | Incineration method |
| DE3038875A1 (de) * | 1980-10-15 | 1982-06-03 | Vereinigte Kesselwerke AG, 4000 Düsseldorf | Muellverbrennungsanlage |
| US4624192A (en) * | 1986-03-20 | 1986-11-25 | Mansfield Carbon Products | Fluidized bed combuster process |
| JPH02106609A (ja) * | 1988-10-17 | 1990-04-18 | Kubota Ltd | 焼却炉 |
| DE3937866A1 (de) * | 1989-03-06 | 1990-09-13 | Pauli Balduin | Rostanordnung und verfahren zum verbrennen von muell und abfall |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE249034C (fr) * | ||||
| DE3804815A1 (de) * | 1987-02-18 | 1988-09-01 | Pauli Balduin | Rostanordnung, insbesondere fuer stufenschwenkroste |
| DE3716088A1 (de) * | 1987-04-09 | 1989-02-02 | Muellverbrennungsanlage Wupper | Verfahren zum verbrennen insbesondere von muell |
| DE3914607A1 (de) * | 1989-05-03 | 1990-11-08 | Omnical Gmbh | Sekundaerluftfuehrung bei rostfeuerungen |
| DE4033889A1 (de) * | 1990-08-09 | 1992-02-13 | Furumoto Herbert Dr Ing | Verfahren zum verbrennen von steinkohlen und anderen heizwertreichen festen brennstoffen in rostfeuerungen fuer braunkohlen und andere heizwertarme brennstoffe |
-
1992
- 1992-10-26 DE DE19924236073 patent/DE4236073A1/de not_active Withdrawn
-
1993
- 1993-09-30 EP EP93116001A patent/EP0595067A1/fr not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2010634A1 (fr) * | 1968-06-11 | 1970-02-20 | Peters Ag Claudius | |
| JPS55137416A (en) * | 1979-04-10 | 1980-10-27 | Ebara Infilco Co Ltd | Incineration method |
| DE3038875A1 (de) * | 1980-10-15 | 1982-06-03 | Vereinigte Kesselwerke AG, 4000 Düsseldorf | Muellverbrennungsanlage |
| US4624192A (en) * | 1986-03-20 | 1986-11-25 | Mansfield Carbon Products | Fluidized bed combuster process |
| JPH02106609A (ja) * | 1988-10-17 | 1990-04-18 | Kubota Ltd | 焼却炉 |
| DE3937866A1 (de) * | 1989-03-06 | 1990-09-13 | Pauli Balduin | Rostanordnung und verfahren zum verbrennen von muell und abfall |
Non-Patent Citations (2)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 14, no. 319 (M - 996) 9 July 1990 (1990-07-09) * |
| PATENT ABSTRACTS OF JAPAN vol. 5, no. 2 (M - 49) 9 January 1981 (1981-01-09) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0683358A1 (fr) * | 1994-05-16 | 1995-11-22 | Von Roll Ag | Méthode d'exploitation d'énergie thermique de matière à déchèts, en particulier d'ordures |
| US5749309A (en) * | 1994-05-16 | 1998-05-12 | Von Roll Umwelttechnik Ag | Process and apparatus for the thermal production of energy from waste material, particulary refuse |
| WO1998025079A1 (fr) * | 1996-12-06 | 1998-06-11 | Metallgesellschaft Aktiengesellschaft | Grille de combustion a refroidissement par eau |
| US6145451A (en) * | 1996-12-06 | 2000-11-14 | Zurl; Emil | Water-cooled firing grate |
| RU2151958C1 (ru) * | 1998-12-28 | 2000-06-27 | Открытое акционерное общество "ВНИИЭТО" | Способ термического обезвреживания твердых отходов |
| EP1493967A1 (fr) * | 2003-07-03 | 2005-01-05 | VISSER & SMIT HANAB B.V. | Système d'incinération et dipositif d'injection pour celui-ci |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4236073A1 (de) | 1994-04-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK FR GB IT LI LU NL SE |
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| 17P | Request for examination filed |
Effective date: 19941013 |
|
| 17Q | First examination report despatched |
Effective date: 19951004 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 19960215 |