EP2989388A2 - Kleinfeuerungsanlage mit verbesserter lüftung und zyklonartiger brennkammer - Google Patents
Kleinfeuerungsanlage mit verbesserter lüftung und zyklonartiger brennkammerInfo
- Publication number
- EP2989388A2 EP2989388A2 EP14719341.1A EP14719341A EP2989388A2 EP 2989388 A2 EP2989388 A2 EP 2989388A2 EP 14719341 A EP14719341 A EP 14719341A EP 2989388 A2 EP2989388 A2 EP 2989388A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion
- zone
- small
- plant according
- 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.)
- Granted
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
- F23G5/02—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B10/00—Combustion apparatus characterised by the combination of two or more combustion chambers
- F23B10/02—Combustion apparatus characterised by the combination of two or more combustion chambers including separate secondary combustion chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
-
- 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
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate 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
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N3/00—Regulating air supply or draught
- F23N3/002—Regulating air supply or draught using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/05002—Measuring CO2 content in flue gas
Definitions
- the application relates to an improved small combustion plant.
- a method and a device for burning solid fuels is known.
- a device which has a burner chamber in which a primary combustion is carried out on a feed grate.
- a cyclone chamber is arranged, in which a
- Cyclone combustion is performed.
- a rotational movement of the flue gases and contained in these solids is effected, whereby solids are pressed to the outside and optionally, if they do not burn in the cyclone combustion, partly directly and partly via lines back into the burner chamber or serve as dust removal.
- the fly ash is pulled tangentially out of the burner chamber and transported directly into the primary combustion chamber, under the grate or via a separate ash logistics.
- the object of the invention is therefore to provide small combustion systems, which have a reduced pollution burden with limited equipment cost.
- Combustion zone for combustion of fuel gas is to be provided.
- a first fan for supplying primary air into the gasification zone and a second fan for supplying secondary air into the combustion zone is provided.
- the first fan is controllable in dependence on the desired performance of the small combustion system and / or the second fan is controllable in dependence on a desired oxygen content in the exhaust air of the combustion zone.
- Combustion zone leads to a decrease in the combustion temperature, whereby the combustion deteriorates and both CO values and fine dust values can increase. This is aggravated by the fact that the lowered air supply into the gasification zone lowers the fuel gas production. This also contributes to excess air and to the problems mentioned.
- the small combustion plants described here are gasification boilers, ie plants in which solid fuel is first gasified to provide fuel gas and the fuel gas is subsequently burned.
- Incineration plants are valid according to valid legal regulations in Germany at the time of application up to a capacity of 1 MW as small combustion plants. As a rule, the power is about 100 kW to 200 kW, with plants with a capacity of about 400 kW are still widespread.
- a preheating of primary air and secondary air is usually useful and can be done for example by heat transfer from exhaust air in a heat exchanger.
- the structure described above allows a simple remedy and leads to a noticeable reduction in emissions.
- a low oxygen content is to be selected for a combustion that is as low in emissions as possible and at the same time provides high efficiency.
- the desired oxygen content is an empirical value, which results above all from the efficiency and a desired low CO content in the exhaust gas.
- the CO content is a good indicator of the quality of the combustion.
- Combustion zone To think about the temperature in the exhaust gas and / or the temperature in the combustion zone. It is conceivable to detect the temperature at different points of the combustion zone. Also, the CO e content in the exhaust gas can be used. The Co e content is the sum of CO, CH 4 and other non-fully combusted carbonaceous material
- the desired oxygen content is between 4% and 6%.
- the data are percent by volume, ie the percentage of the oxygen volume flow in the total volume flow.
- the desired oxygen content is dependent on the structure of the small combustion plant.
- the induced draft fan should not take over the control of the air supply in the combustion zone and / or gasification zone. This is done as shown by the first fan and the second fan and the associated control parameters. However, the induced draft fan can be incorporated indirectly into the regulation of the first and second blower, since in particular the second blower with lower power can deliver the same volume flow when the induced draft blower is in operation.
- the induced draft fan is here in
- the combustion zone is designed in multiple stages, wherein in particular a main combustion stage and a post-combustion stage are present. This can be realized in the form of a stacked combustion chamber, in which the different combustion stages are arranged one above the other.
- An important embodiment of the invention which is also significant regardless of the above-described invention of two separate blowers for primary air and secondary air, provides as a main combustion stage, a combustion chamber in the form of a cyclone.
- Cyclone chambers are known for dedusting, also for afterburning.
- Such a combustion chamber allows a good mixing of air and fuel gas and thus good combustion, so that the combustion chamber both as Hauptverbrennungsze and at the same time as
- the combustion chamber in the form of a cyclone normally has to withstand high temperatures of up to 1400 ° C. Therefore, the combustion chambers are usually made of stone, with other materials that can withstand high temperatures in question.
- the known cyclones for dedusting are regularly made of metal and would usually not withstand the temperatures when used as a combustion chamber. With good combustion management and suitable combustion chamber in the form of a cyclone can often be omitted, the post-treatment stage.
- a dip tube is present, so that a sufficient mixing of fuel gas and secondary air and a sufficient residence time of the fuel gas in the combustion chamber in the form of a cyclone is forced.
- the cyclone has a round cross-section that tapers downwards.
- the dip tube protrudes from above into the combustion chamber and is arranged centrally.
- the fuel gas and the air, more precisely the secondary air, are injected laterally into the combustion chamber.
- a flow is forced around the axis of the combustion chamber which leads along the wall of the combustion chamber.
- the flow also receives a component of motion down, so that the
- a combustion chamber in the form of a cyclone, in particular embodiments with a dip tube thus have particular advantages when operating in the low power range.
- a supply of tertiary air into the combustion zone is possible.
- the tertiary air is in usually supplied only after fuel gas and secondary air have traveled a certain way in the combustion chamber. Until then, by the combustion of the oxygen content may have dropped, so that a supply of tertiary air the
- the tertiary air can be diverted from the secondary air, but it is also possible to provide a separate fan for the tertiary air. Normally, it makes sense to use preheated secondary air and tertiary air to avoid cooling down at the feed point and a concomitant inferior combustion.
- an aftertreatment step is present. This can work thermally or catalytically.
- soot builds up at low temperatures, which is burned free again at high temperatures. This reduces the amount of unburned soot that would be emitted at low temperatures.
- a catalytic post-treatment stage With the help of a catalyst, incompletely burnt soot is burned even at lower temperatures.
- the aftertreatment step is formed by a flowable structure having a high surface area, with ceramic components preferably being usable. Since the surface plays a decisive role both in thermal mode of operation and in catalytic operation, a large surface makes sense.
- Fuel gas supply which is to promote fuel gas and secondary air into the combustion chamber in the form of a cyclone, is designed as Venturi channel. This results in an improved mixing of fuel gas and secondary air.
- Venturi channel is formed. This allows a better mixing of the flow in the dip tube.
- tertiary air which is often blown into the dip tube, can be better mixed with the exhaust gas, which can take place in the dip tube improved afterburning. Further details will be described below with reference to the figures. Shown
- FIG. 1 shows a systematic structure of a small combustion system.
- FIG. 2 shows a representation of a stack combustion chamber
- Fig. 3 is a combustion chamber in the form of a cyclone
- FIG. 4 shows a combustion chamber in the form of a cyclone with Venturi ducts
- a small combustion plant 1 can be seen.
- a gasification zone 2 is shown.
- Primary air enters the gasification zone 2 through a primary air supply line 3.
- the primary air flows from different sides into the gasification zone. This is effected by a first blower 4.
- the first fan 4 is regulated depending on the desired performance of the small combustion plant 1.
- the gasification zone 2 is produced by means of pyrolysis in a conventional manner from the primary air and fuel used, often firewood, serving as a fuel gas carbonization gas. The fuel gas flows through
- Distribution system 5 in a combustion zone 6.
- the mass flow of the fuel gas flowing through the distribution system 5 is crucial by the
- the combustion zone 6 has a supply line 7 in which a second blower 8 for supplying the secondary air is located.
- the second fan also serves to supply tertiary air, as will be explained in more detail below.
- the resulting during combustion exhaust gas flows into an exhaust passage 9. This is largely supported by a Saugzuggebläse 10, which is regulated so that in the exhaust passage 9 a desired negative pressure, so that the exhaust gas from the combustion zone 6 flows into the exhaust passage 9.
- Fig. 2 shows the combustion zone 6 in more detail. One is used here
- the distribution system 5 is shown, through which the fuel gas enters the main combustion stage 1 1.
- the secondary air and tertiary air is promoted.
- the channel 7 extends in a manner not shown here on a combustion chamber surrounding the combustion zone 6 or along a gasification zone surrounding the gasification chamber 2.
- the secondary air passes through a secondary air line 1 2 in the main combustion stage 1 1. This is served by a series of nozzles, which in different levels in the inner walls of the
- Main combustion stage 1 1 surrounding chamber are arranged.
- Main combustion stage 1 the combustion takes place substantially.
- the exhaust gas leaving the main combustion stage 11 still contains a considerable amount of unburned constituents.
- a post-combustion stage 13 a further combustion takes place.
- tertiary air is supplied via a tertiary air line 14. Secondary air and tertiary air thus differ only in which region of the combustion zone the supply takes place.
- the post-combustion stage 1 3 is a compactly constructed module which is divided into several sectors. In each sector there is a turbulator for the intensification of the mixing with the tertiary air and separation of
- the exhaust gas leaves the post-combustion stage 13 and enters a
- Post-treatment step 1 5 is a three-dimensional porous structure consisting of loose materials and depending on the material and operating phase or existing conditions thermally and / or catalytically.
- the aftertreatment stage 1 5 provides both for the further treatment of the hardly oxidizable components, the main combustion stage 1 1 and the
- Post-combustion stage 13 can happen, as well as for the deposition and
- a particular advantage of the aftertreatment stage 1 5 is that the hot structure, the activation energy for the reaction such. B. can provide at the burn-out. In addition, the inorganic particulate matter in this structure by various effects, such. B.
- inorganic dusts are cleaned.
- the shaking can be done manually or automatically by a vibrator.
- a combustion chamber 1 6 shown in Fig. 3 can be used in the form of a cyclone.
- the coming from the gasification zone 2, not shown here fuel gas is through the
- a mixing area 1 7 heated secondary air is added.
- the mixture of secondary air and fuel gas flows from the side into the upper region 18 of the combustion chamber 1 6 a. This causes a circulation of the mixture along with a further mixing.
- the mixture flows, as it were on a helix further down in the tapered combustion chamber 1 6 in a lower portion 1 9 of the combustion chamber 1 6.
- the lower region 19 is essentially the combustion, so that it corresponds to the main combustion stage. From the lower portion 19 flows at the
- the combustion chamber 16 shown in FIG. 4 differs from the combustion chamber shown in FIG. 3 in that, for improved flow guidance, the distribution system 5 downstream of the admixing area 17 is designed as a Venturi channel 22. Likewise, the dip tube 20 is designed as Venturi channel 23.
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)
- Solid-Fuel Combustion (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013207724.6A DE102013207724A1 (de) | 2013-04-26 | 2013-04-26 | Verbrennungsanlage mit verbesserter Lüftung und zyklonartiger Brennkammer |
| PCT/EP2014/058521 WO2014174104A2 (de) | 2013-04-26 | 2014-04-25 | Kleinfeuerungsanlage mit verbesserter lüftung und zyklonartiger brennkammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2989388A2 true EP2989388A2 (de) | 2016-03-02 |
| EP2989388B1 EP2989388B1 (de) | 2024-03-27 |
Family
ID=50549346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14719341.1A Active EP2989388B1 (de) | 2013-04-26 | 2014-04-25 | Häusliche kleinfeuerungsanlage mit verbesserter lüftung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10724736B2 (de) |
| EP (1) | EP2989388B1 (de) |
| CA (1) | CA2910329C (de) |
| DE (1) | DE102013207724A1 (de) |
| WO (1) | WO2014174104A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202016102385U1 (de) | 2016-05-04 | 2016-05-24 | Outotec (Finland) Oy | Zyklon und Tauchrohr zur Separation von Partikeln aus einem Gas |
| DE102019218806A1 (de) * | 2019-12-03 | 2021-06-10 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren und Vorrichtung zum Verbrennen von festen Brennstoffen |
| DE102020205646A1 (de) * | 2020-05-05 | 2021-11-11 | Eberspächer Catem Gmbh & Co. Kg | Verwendung einer PTC-Heizeinrichtung |
| US12049124B2 (en) | 2020-05-15 | 2024-07-30 | Eberspächer Catem Gmbh & Co. Kg | PTC heating assembly and method for manufacturing the same |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2426414A (en) * | 1947-08-26 | pullen | ||
| US3457883A (en) * | 1967-05-08 | 1969-07-29 | Borge Richard Ankersen | Incinerators and methods of incineration |
| US3625186A (en) * | 1970-08-11 | 1971-12-07 | Rust Engineering Co The | Control system for firing black liquor recovery boiler auxiliary fuel in response to plant load swings |
| US4300460A (en) * | 1978-03-10 | 1981-11-17 | Enterprises International Inc. | Method for generating heat from waste fuel |
| US4545360A (en) * | 1983-11-21 | 1985-10-08 | Smith Richard D | Clean burning solid fuel stove and method |
| GB8710462D0 (en) * | 1987-05-01 | 1987-06-03 | Willis Associates Ltd | Combustion of organic matter |
| US4920898A (en) * | 1988-09-15 | 1990-05-01 | Trw Inc. | Gas turbine slagging combustion system |
| US5054405A (en) * | 1990-11-02 | 1991-10-08 | Serawaste Systems Corporation | High temperature turbulent gasification unit and method |
| DE19525106C1 (de) * | 1995-06-29 | 1997-03-13 | Richard Kablitz & Mitthof Gmbh | Feuerungsanlage |
| WO1998048219A1 (en) * | 1997-04-24 | 1998-10-29 | Dell-Point Combustion Inc. | Solid fuel burner for a heating apparatus |
| AT406901B (de) * | 1998-04-17 | 2000-10-25 | Andritz Patentverwaltung | Verfahren und vorrichtung zur verbrennung von partikelförmigen feststoffen |
| SE517399C2 (sv) | 2000-10-06 | 2002-06-04 | Swedish Bioburner System Ab | Förfarande vid automatiserad eldning med fastbränsle |
| JP4865790B2 (ja) * | 2005-06-21 | 2012-02-01 | フェニックス・ホーテ・テクノロジー・インコーポレーテッド | 廃棄物の熱処理のための装置及び方法 |
| US20080035137A1 (en) | 2006-08-10 | 2008-02-14 | Clean Wood Heat, Llc | Combustion apparatus |
| CA2671972C (en) | 2006-12-07 | 2015-10-06 | Waste2Energy Technologies International Limited | Batch waste gasification process |
| DK2078555T3 (da) * | 2008-01-11 | 2013-11-25 | Ae & E Inova Ag | Fremgangsmåde og anlæg til rensning af røggasser |
| US8715401B2 (en) * | 2009-03-16 | 2014-05-06 | Sustainable Energy Solutions, Llc | Methods and systems for separating condensable vapors from gases |
| US20120125241A1 (en) * | 2010-05-20 | 2012-05-24 | Phil See | Waste Oil Furnace |
| DE102010021370A1 (de) | 2010-05-25 | 2011-12-01 | Werkstätten GmbH | Heizungssystem |
| DK2426414T3 (da) * | 2010-09-06 | 2018-11-26 | Egon Russ | Fremgangsmåde og indretning til forbrænding af faste brændstoffer |
-
2013
- 2013-04-26 DE DE102013207724.6A patent/DE102013207724A1/de active Pending
-
2014
- 2014-04-25 EP EP14719341.1A patent/EP2989388B1/de active Active
- 2014-04-25 CA CA2910329A patent/CA2910329C/en active Active
- 2014-04-25 US US14/786,450 patent/US10724736B2/en active Active
- 2014-04-25 WO PCT/EP2014/058521 patent/WO2014174104A2/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| US10724736B2 (en) | 2020-07-28 |
| EP2989388B1 (de) | 2024-03-27 |
| CA2910329A1 (en) | 2014-10-30 |
| WO2014174104A2 (de) | 2014-10-30 |
| DE102013207724A1 (de) | 2014-10-30 |
| WO2014174104A3 (de) | 2014-12-24 |
| US20160084499A1 (en) | 2016-03-24 |
| CA2910329C (en) | 2021-02-23 |
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