CN2849483Y - Pulsating fluidized bed burner - Google Patents
Pulsating fluidized bed burner Download PDFInfo
- Publication number
- CN2849483Y CN2849483Y CNU2005200150630U CN200520015063U CN2849483Y CN 2849483 Y CN2849483 Y CN 2849483Y CN U2005200150630 U CNU2005200150630 U CN U2005200150630U CN 200520015063 U CN200520015063 U CN 200520015063U CN 2849483 Y CN2849483 Y CN 2849483Y
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- main body
- burning
- fluidized bed
- chamber
- place
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- 238000002485 combustion reaction Methods 0.000 claims description 44
- 230000000630 rising effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 9
- 238000012546 transfer Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000004449 solid propellant Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000763 evoking effect Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a burner for a pulsating fluidized bed, which is provided with an acoustic decoupling chamber, wherein the acoustic decoupling chamber is connected with a burning main body of a Rieke pipe type pulsating fluidized bed; the L/12 to 3L/4 point of a main body of a burning chamber of the Rieke pipe type pulsating fluidized bed is provided with a grid plate, and the L is the pipe length of the main body of the burning chamber; the upper and the lower outer sides of the wall of the main body of the burning chamber of the Rieke pipe type pulsating fluidized bed of the grid plate are provided with heating devices; the inner side wall or the outer side wall of the upper part of the main body of the burning chamber of the Rieke pipe type pulsating fluidized bed is provided with a heat exchange surface; the side wall of the main body of the burning chamber of the Rieke pipe type pulsating fluidized bed between the heat exchange surface and the heating devices is provided with a feeding device. The utility model causes the pulsating burning technology and the fluidized bed burning technology to be combined mutually, which belongs to a fire-new burning conception. The utility model has the advantages that the structure is simple, the manufacture and the installation are convenient, the heat transfer and the burning can be enhanced, the heat transfer efficiency and the burning efficiency are improved, and the generation of NOx is reduced. The utility model can be used for burning various coals and biotic substances, drying articles, and gasifying the coals under the condition of oxygen enrichment.
Description
Technical field
The utility model relates to burner, relates in particular to a kind of pulsating fluid-bed combustion apparatus.
Background technology
What intermittent combustion was described is flow parameter, i.e. state parameter in the combustion zone is as the combustion process that takes place under the cyclic fluctuation conditions in time such as temperature, pressure, speed.Long repetitive process has been experienced in the development of pulsating Combustion Technology.Gobble in 1900 have applied for the Deutsche Bundespatent of first pulse combustion device, but because the structure of its air-flow circular control mechanism is too complicated, fail to drop into practical application; Esnault-Pelterie had applied for mechanical membrane chip self-oscillation pulsating combusting device French Patent (FRP) in 1906, its essence is a device that utilizes pulsating combusting device to promote combustion gas turbine; Lorin had designed the intermittent combustion jet engine in 1908; Marconnet in 1909 has developed and has not used the mechanical type one-way cock, and adopts the pulsating combusting device air force valve, that be used to produce thrust power of a band diffuser; 1931, German Schmidt developed as shown in Figure 3, was used to produce the pulse combustion device of thrust, applied for Deutsche Bundespatent [.The achievement in research of Schmidt is in World War II, and quilt Germany is used for the propeller of V-1 guided missile, and the campaign that is used for bombing London.
Pulsating Combustion Technology is mainly used in jet propulsion system and gas turbine field in early days, and F.H.Reynst in 1933 have applied for the patent of " Combustion Pot " by name, and it comes down to a kind of stove coal-fired under pulse state; Since then, countries such as English, U.S., moral, Soviet Union, method, day carry out this research field in succession.Five, the sixties, people begin pulsating Combustion Technology is applied to heat the heating aspect, and Lucax-Rotax intermittent combustion hot-water boiler appears on the market in Canada, but because fuel price was very low at that time, and reason such as the noise of intermittent combustion hot-water boiler is excessive, make it fail to obtain to promote.Behind the seventies, energy generation crisis impels people to begin again this power-saving technology has been produced great interest, has carried out systematic research.After the eighties, the research of pulsating Combustion Technology has entered the stage of practicability, and states such as Europe, the United States, day all are devoted to develop the various pulse combustion devices of industry, commerce and family expenses, and has large quantities of products to put into market.
Pulsating combusting device by its based on operation principle and acoustic characteristic different, can be divided into following three types: Schimidt type (claiming 1/4 wave length type again); Helmholtz type and Rijke type.Wherein Zui Da characteristics are without any moving component, and are simple in structure, and load regulation range is big, not only can burning gases, liquid fuel, but also solid fuel such as burning coal, wood chip easily.
Summary of the invention
The purpose of this utility model provides a kind of pulsating fluid-bed combustion apparatus.
It has decoupling chamber, gram cast pulsating fluidized bed burning main body in being connected with in the sound decoupling chamber, L/12-3L/4 place in lining gram cast pulsate fluidizing bed combustor main body is provided with air distribution plate, wherein L is a combustion chamber main body pipe range, the gram cast pulsate fluidizing bed combustor main wall outside is provided with heater in about air distribution plate, on the interior or lateral wall on lining gram cast pulsate fluidizing bed combustor main body top, be provided with heat-exchange surface, be provided with charging gear on the gram cast pulsate fluidizing bed combustor main body wall between heat-exchange surface, the heater.
The utility model has the advantages that:
1, combustion intensity height, efficiency of combustion height
Because mixing between the air-flow and particle in the burner strengthened in the pulsation of air-flow, accelerated chemical reaction velocity, sufficient combustion, make pulsating combusting device have very high combustion intensity, the intermittent combustion needed excessive air amount also very little (α=1.02～1.05) that fully burns in addition, so its heat loss due to exhaust gas is also very little, this makes it have very high efficiency of combustion (95%-100%) again;
2, heat transfer efficiency height
Acoustic resonance in the intermittent combustion chamber has caused bigger fluid oscillation, and being attached in these vibrations is turbulent velocity vibration, and the effect of turbulent flow has strengthened heat transfer.Because the pulsation of air-flow has weakened the drag effect in tube wall boundary layer, the heat transmission is accelerated simultaneously.The heat transfer that different experiment conditions can obtain in various degree improves, and the highest heat transfer efficiency can reach 400%;
3, smoke-discharging pollution is little
Burning fully make C, H in the exhaust
2, CO and carbon compound content all reduce, and because the temperature of intermittent combustion is generally lower, make NO
xDischarging lower, help environmental protection.NO under the pulsation condition
xDischarge capacity under fuel-rich combustion 250ppm and the 700ppm under the oxygen-enriched combusting between change, compare with routine burning, under suitable air stage feeding, NO
xThe high energy of concentration reduce 56%;
4, fuel is applied widely
Because fluidized bed combustion can be applied to the burning of pluralities of fuel, and the Rieke type pulsating combusting device also can be used for the pluralities of fuel of solid, liquids and gases state, make the Rieke type pulsating fluid-bed combustion apparatus can be used for the burning of pluralities of fuel, adaptability is very wide;
5, compact conformation, saving fixed investment
The heat transfer that pulsating Combustion Technology is good, mass transfer characteristic make that the volume of combustion chamber and heat exchange area all can correspondingly reduce under certain caloric value prerequisite.
Description of drawings
Fig. 1 is the pulsating fluid-bed combustion apparatus structural representation;
Fig. 2 is the sound spectrum analysis chart after pulsation produces;
Fig. 3 is each measuring point pressure history comparison diagram of not pulsing and pulse.
The specific embodiment
As shown in drawings, pulsating fluid-bed combustion apparatus has decoupling chamber 2, gram cast pulsating fluidized bed burning main body 1 in being connected with in the sound decoupling chamber 2, L/12-3L/4 place in lining gram cast pulsate fluidizing bed combustor main body 1 is provided with air distribution plate 3, wherein L is a combustion chamber main body pipe range, the gram cast pulsate fluidizing bed combustor main wall outside is provided with heater 4 in about air distribution plate, on the lateral wall on gram cast pulsate fluidizing bed combustor main body 1 top, lining, be provided with heat-exchange surface 6, at heat-exchange surface 6, gram cast pulsate fluidizing bed combustor main body wall is provided with charging gear 5 between the heater 4.
Described L/12-3L/4 place of rising in gram cast pulsate fluidizing bed combustor main body 1 lower end, lining is provided with air distribution plate 3, refers to L/4 place, L/8 place, 5L/8 place, L/12 place, 5L/12 place or the 3L/4 place of rising in gram cast pulsate fluidizing bed combustor main body 1 lower end, lining and is provided with air distribution plate 3.
The volume of sound decoupling chamber 2 restrains more than 10 times of cast pulsate fluidizing bed combustor body volume in being.In partly or entirely being arranged on, heat-exchange surface 6 restrains on the cast pulsate fluidizing bed combustor main body 1.Heat-exchange surface 6 is jacket type or water film type.
On the made visual pulsating fluidized bed experimental bench of quartz glass, pulsation and fluidization characteristic during the research solid fuel ignition.Can be clear that by the quartz glass tube wall solid fuel and fluidized bed material roll up and down in the combustion chamber, present good fluidization characteristic.And after combustion chamber temperature reaches certain value, can spontaneously evoke the harmonic wave in the pipe, simultaneously with continuing the sound generating that intensity is very big.
(Fig. 2) as seen after the sound intensity that evokes in the combustion chamber carried out fast Fourier analysis, the acoustic wave character that fuel is evoked in the combustion chamber during with the fluidized bed material pulsate fluidizing is identical with typical pulsating combusting device, the sound wave that evokes be each harmonic and, and the sound intensity amplitude of higher hamonic wave is starkly lower than the fundamental voltage amplitude that is evoked.
Change air inlet wind speed and fluidized-bed layer height in the test, find solid fuel and fluidized bed material pressure fluctuation characteristics such as Fig. 3 in pulsating fluidized bed.As seen from the figure, the pressure fluctuation characteristics when fuel is with the bed materials flow in the pulsating fluidized bed is also the same with typical pressure fluctuation characteristics in the gram pipe of lining, is rendered as sinusoidal fluctuation.But different is because the existence of bed resistance, can change the equalization point of the preceding pressure fluctuation of air distribution plate, no longer with air distribution plate after and in the burner hearth equalization point of pressure fluctuation the same, remain on around 0 amplitude, but be positioned at about 500Pa, this equilbrium position changes with the difference of bed material height, air distribution plate structure and material and fluidising air velocity.
Claims (5)
1. pulsating fluid-bed combustion apparatus, it is characterized in that, it has decoupling chamber (2), gram cast pulsate fluidizing bed combustor main body (1) in being connected with in the sound decoupling chamber (2), the L/12-3L/4 place of rising in gram cast pulsate fluidizing bed combustor main body (1) lower end, lining, be provided with air distribution plate (3), wherein L is a combustion chamber main body pipe range, air distribution plate (3) up and down in gram cast pulsate fluidizing bed combustor main body inner wall or outer wall be provided with heater (4), on the outer wall on lining gram cast pulsate fluidizing bed combustor main body (1) top, be provided with heat-exchange surface (6), restrain between heat-exchange surface (6) and the heater (4) on the outer wall of cast pulsate fluidizing bed combustor main body (1) and be provided with charging gear (5).
2. a kind of pulsating fluid-bed combustion apparatus according to claim 1, it is characterized in that, the air distribution plate (3) at the L/12-3L/4 place that rise gram cast pulsate fluidizing bed combustor main body (1) lower end in described being arranged on refers to L/4 place, L/8 place, 5L/8 place, L/12 place, 5L/12 place or the 3L/4 place of rising in gram cast pulsate fluidizing bed combustor main body (1) lower end, lining and is provided with air distribution plate (3).
3. a kind of pulsating fluid-bed combustion apparatus according to claim 1 is characterized in that, the volume of described sound decoupling chamber (2) restrains more than 10 times of cast pulsate fluidizing bed combustor body volume in being.
4. a kind of pulsating fluid-bed combustion apparatus according to claim 1 is characterized in that, restrains on the cast pulsate fluidizing bed combustor main body (1) in described heat-exchange surface (6) partly or entirely is arranged on.
5. according to claim 1 or 4 described a kind of pulsating fluid-bed combustion apparatus, it is characterized in that described heat-exchange surface (6) is jacket type or water film type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200150630U CN2849483Y (en) | 2005-09-22 | 2005-09-22 | Pulsating fluidized bed burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200150630U CN2849483Y (en) | 2005-09-22 | 2005-09-22 | Pulsating fluidized bed burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2849483Y true CN2849483Y (en) | 2006-12-20 |
Family
ID=37521968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200150630U Expired - Fee Related CN2849483Y (en) | 2005-09-22 | 2005-09-22 | Pulsating fluidized bed burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2849483Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419338C (en) * | 2005-09-22 | 2008-09-17 | 浙江大学 | Pulsating fluid-bed combustion apparatus |
-
2005
- 2005-09-22 CN CNU2005200150630U patent/CN2849483Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100419338C (en) * | 2005-09-22 | 2008-09-17 | 浙江大学 | Pulsating fluid-bed combustion apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20091022 |