WO1991014900A1 - Procede et dispositif pour bruler du combustible liquide apres l'avoir transforme en bulles - Google Patents
Procede et dispositif pour bruler du combustible liquide apres l'avoir transforme en bulles Download PDFInfo
- Publication number
- WO1991014900A1 WO1991014900A1 PCT/JP1991/000353 JP9100353W WO9114900A1 WO 1991014900 A1 WO1991014900 A1 WO 1991014900A1 JP 9100353 W JP9100353 W JP 9100353W WO 9114900 A1 WO9114900 A1 WO 9114900A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foaming
- porous element
- liquid fuel
- combustion
- foam
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
Definitions
- the present invention relates to a method of foaming and burning liquid fuel, particularly light oil fuel (kerosene, light oil, etc.), in a wide range from a domestic petroleum stove to an industrial kiln, and a combustion apparatus thereof. It is.
- liquid fuel particularly light oil fuel (kerosene, light oil, etc.)
- Conventional combustion uses a combustion method in which a liquid fuel is directly vaporized and burned, or the liquid fuel is once broken into fine mist by a spray device and burned.
- combustion is achieved by making the porous filter (element) used in the foam generator a material having a surface property having a critical surface tension lower than the surface tension of the liquid fuel.
- a combustion device that prevents fuel backflow during fire extinguishing.
- the present applicant has disclosed in Japanese Patent Application Laid-Open No. 2-259311 that a combustor, an evaporating dish and a foam generator are provided close to each other, and liquid fuel is supplied to the outside of the porous element in the foam generator, Supply gas for foaming to make liquid fuel into foam and evaporate flint It proposes a method and a device to increase the area significantly and then burn immediately.
- An object of the present invention is to provide a combustion method and apparatus for achieving uniformity and foaming stability of a foamed fuel, facilitating evaporation of the fuel, and achieving more stable combustion.
- the uniformity of the foam fuel means that there is little variation in the diameter of each bubble forming the foam (aggregate of bubbles).
- the stabilization of the foaming property means that the diameter of each bubble is small and the foaming ratio (volume of foam / volume of liquid) is stably large.
- FIG. 1 is a longitudinal sectional view of an essential part showing an embodiment of the present invention
- FIG. 2 is a sectional view taken along line AA of FIG.
- FIGS. 3 (a) and 3 (b) are charts showing the relationship between the average pore diameter and the airflow resistance and the relationship between the ignition stability of the porous element in the present invention.
- FIG. 4 is a chart showing the relationship between the superficial velocity and the expansion ratio in the present invention.
- FIG. 5 shows the superficial velocity and the superficial velocity in the embodiment of the present invention. It is a chart which shows the relationship of fire extinguishing time.
- FIG. 6 (a) is a longitudinal sectional view of a main part showing another example of the configuration of the foam generator according to the present invention
- FIG. 6 (b) is a sectional view taken along line BB of FIG. 6). is there.
- FIG. 7 is a longitudinal sectional view of still another configuration example of the present invention.
- the present invention in the foaming combustion of liquid fuel, air is supplied into the liquid fuel through a porous element having an average pore diameter (opening of 0) of 1 m or more and 200 "m or less, and the fuel is supplied to the diameter of the fuel.
- This is a method in which, after forming a foam consisting of a small bubble-shaped foam body, air necessary for completely combusting the foamed fuel in the combustor is separately supplied and burned, and the foaming gas is a porous element.
- the superficial velocity that is, the superficial velocity of the superficial tower passing through the. (U ms or more and 1 m s or less.)-The present invention further has an average pore diameter of 1 or more and 2 ⁇ ⁇ m or less.
- a porous element a foam generator for connecting a gas supply pipe to the porous element to form a bubble region, and a foam fuel provided in close proximity to an upper portion of the foam generator.
- liquid fuel composed of a combustor that supplies combustion air to the combustion chamber to form a combustion zone
- the porous element is made of sintered metal with a density of 4. 4 to (J .gI '/ ciiK porosity 35 to 45%, if necessary.
- the cell is composed of a ceramics body with a density of 2.0 to 5. Ogr Z ciil and an apparent porosity of 15 to 45%, and the opening direction of the porous element is set to be horizontal. Prevent impairment of the foaming function due to soot and scale, and prevent the foaming function from impairing due to soot and scale, with the opening direction of the porous element facing downward.
- the porous element has a ring shape to prevent harm.
- FIG. 1 shows an embodiment of the present invention, and is an explanatory view showing a main part thereof in a longitudinal section
- FIG. 2 is a sectional view taken along line AA of FIG. 1 is a foam generator
- 2 is a porous element having a function to foam fuel
- 3 is an evaporating dish.
- Reference numeral 4 denotes a flint burner, and below the combustor 4, an evaporating dish 3 and a foam generator 1 for generating foam below the evaporating dish 3 are continuously arranged in close proximity.
- a combustor 4 above the evaporating dish 3 is provided with a wind box 7 for supplying combustion air outside the combustor 4.
- the liquid fuel is supplied to the upper part of the porous element 2 inscribed in the foam generator].
- the gas represented by air is preliminarily blown from the foaming gas supply pipe 5 provided in the lower part.
- Fuel, kerosene, gas oil, etc. immediately foams and rises in the form of foam consisting of aggregates of small diameter bubbles.
- this foam is ignited by a ⁇ contact heater 13 to continue burning.
- Kerosene is often used as the liquid fuel for combustion, but light oil can also be used.
- These liquid fuels are supplied from a fuel tank 10 through a pump 11 and a fuel supply pipe 6.
- Reference numeral 9 denotes a flame stabilizer, which is paired with the combustion ring and stabilizes continuous combustion, and is provided inside the combustor 4. 12 indicates a flame.
- the foam generator 1 is provided below the center of the evaporating dish 3.
- the porous element 2 contains the bottom of the evaporating dish. It is provided below the recess 23 provided below the surface.
- a gas supply pipe 5 for foaming is connected to the porous element 2 from below to form a foaming area a.
- the porous element 2 provided in this way plays a very important role in the uniformity of the foam fuel and the stabilization of the foaming property.
- the porous element 2 is used.
- the feature is that the average pore diameter (opening) is 1 ni or more and 200 m or less.
- Fig. 3 (a) shows the pressure loss in the ignition and fire extinguishing tests.
- Fig. 3 (b) shows the frequency of misfires during ignition. All are based on experiments performed by the present inventors.
- the ventilation resistance ratio (point fire extinguishing test) is the pressure loss at the 1000th pressure loss.
- A indicates a superficial velocity of 0.01 m / s
- B indicates a superficial velocity of 0.1 m / s
- C indicates a superficial velocity of 1.0 m / s.
- porous element having an average pore diameter of 1 m or more and 200 m or less that can be used include porous sintered metals and ceramics.
- a sintered metal for the porous element When using a sintered metal for the porous element, use a sintered body with a density of 4.0 to 6.Ogr / cii and a porosity of 35 to 45%, or a ceramic body. In this case, it is advisable to select a ceramic body with a density of 2.0 to 5. OgrZcn with an apparent porosity of 15 to 45%. According to other experiments by the present inventors, soot is generated by prolonged combustion, or scale is dropped from a flame holder or the like. It is recommended that the foam generator be configured with the openings facing sideways as shown in FIG. 6 or facing down as shown in FIG.
- the porous element 2 is formed in a ring shape, and the foaming gas supply pipe 5 supplies the foaming gas in a tangential direction.
- the foam generator, the evaporating dish, and the combustor according to the present invention are not limited to a circular plane, but may include a square or a rectangle.
- the amount of fuel supplied from the fuel supply pipe 6 and the amount of air supplied from the gas supply pipe 5 for foaming are increased to increase the amount of foam generated, and the fuel air pipe is provided.
- the combustion amount can be easily reduced [1], and the variable range is sufficiently wide.
- Combustor diameter x height inner diameter 150 orchids ⁇ x 150
- Flame Holder Flame Holder with Combustion Ring Combustion test is a long-time continuous test in which the fire is extinguished continuously for 48 hours after ignition, burning for 30 minutes after ignition, and then extinguishing for 15 minutes The test was stopped and repeated, and the test was repeated.
- a predetermined amount of air is supplied from the combustion air pipe 8 of the combustor 4 and then a predetermined amount is supplied from the foaming gas supply pipe 5 connected to the porous element 2 having a diameter of 4 mm.
- a predetermined amount of kerosene was supplied via a pump 11 to an upper part of a porous element 2 provided inside the foam generator 1.
- the kerosene immediately foams and is ignited by the ignition heater 13, and after about two minutes, the air is adjusted to a predetermined air ratio and the amount of flint burning to continue burning.
- this invention was excellent in any of the combustion characteristics.
- Table 2 summarizes the combustion characteristics based on the average pore diameter (opening) of the porous element and the superficial velocity. It can be seen from this bridge that the range of the average pore diameter and the range of the superficial velocity of the porous element shown in the present invention are effective.
- Fig. 5 shows an example with a pore diameter of 40 m.
- the superficial velocity of the porous element section was within the range of 0.01 to 1 m / s in any of these combustion test results.
- the average pore diameter (opening) of the porous element of the foam generator is optimally selected, the air flow resistance of the gas for foaming can be reduced, and the superficial velocity of the porous element portion can be reduced. As a result, the generated foam also becomes an aggregate of small bubbles having a diameter of 0.5 to 5 mm, which achieves stable ignition and continuous combustion, and has a great industrial effect. .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wick-Type Burners And Burners With Porous Materials (AREA)
- Evaporation-Type Combustion Burners (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910701141A KR950012775B1 (ko) | 1990-03-20 | 1990-03-15 | 액체연료의 포말화 연소방법 및 그 장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7155790 | 1990-03-20 | ||
JP2/71557 | 1990-03-20 | ||
JP3037515A JP2688120B2 (ja) | 1990-03-20 | 1991-03-04 | 液体燃料の泡沫化燃焼方法およびその装置 |
JP3/37515 | 1991-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991014900A1 true WO1991014900A1 (fr) | 1991-10-03 |
Family
ID=26376636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1991/000353 WO1991014900A1 (fr) | 1990-03-20 | 1991-03-15 | Procede et dispositif pour bruler du combustible liquide apres l'avoir transforme en bulles |
Country Status (4)
Country | Link |
---|---|
US (1) | US5192203A (ja) |
EP (1) | EP0478789A4 (ja) |
CA (1) | CA2049009C (ja) |
WO (1) | WO1991014900A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19529994C2 (de) * | 1994-11-10 | 2003-06-26 | Eberspaecher J Gmbh & Co | Verdampferbrenner für ein Heizgerät |
SE9703188D0 (sv) * | 1997-09-04 | 1997-09-04 | Electrolux Ab | Bränslebehållare |
US6024758A (en) * | 1998-02-23 | 2000-02-15 | Thal; Raymond | Two-part captured-loop knotless suture anchor assembly |
US8715378B2 (en) | 2008-09-05 | 2014-05-06 | Turbulent Energy, Llc | Fluid composite, device for producing thereof and system of use |
CN101952019B (zh) * | 2007-09-07 | 2014-03-12 | 湍流能量公司 | 流体的动态混合 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0195205A (ja) * | 1987-10-05 | 1989-04-13 | Nippon Steel Corp | 液体燃料の燃焼方法 |
JPH0221106A (ja) * | 1988-07-08 | 1990-01-24 | Nippon Steel Corp | 液体燃料の燃焼装置 |
JPH02259311A (ja) * | 1989-03-31 | 1990-10-22 | Nippon Steel Corp | 液体燃料の燃焼装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US70117A (en) * | 1867-10-22 | post and jeptha garbabd | ||
US1378689A (en) * | 1920-06-02 | 1921-05-17 | Larson John Andrew | Oil-burner |
US2396577A (en) * | 1944-09-02 | 1946-03-12 | Aeroil Products Company | Vaporization burner |
US2710652A (en) * | 1951-04-09 | 1955-06-14 | Ca Minister Nat Defence | Pot type oil burner |
FR1315899A (fr) * | 1961-12-14 | 1963-01-25 | Procédé et dispositif de combustion pour liquides peu volatils, ainsi que leurs applications | |
JPS4738368A (ja) * | 1971-04-19 | 1972-12-04 | ||
JPS5111372B2 (ja) * | 1972-08-29 | 1976-04-10 | ||
SU578526A1 (ru) * | 1975-11-17 | 1977-10-30 | Ивановский Энергетический Институт Имени В.И.Лен На | Способ регулировани горени топливо-воздушной смеси |
SU666382A2 (ru) * | 1976-12-03 | 1979-06-05 | Ивановский энергетический институт им.В.И.Ленина | Барботажна горелка |
JPS5531256A (en) * | 1978-08-26 | 1980-03-05 | Toshiba Corp | Liquid fuel combustion apparatus |
US4443180A (en) * | 1981-05-11 | 1984-04-17 | Honeywell Inc. | Variable firing rate oil burner using aeration throttling |
FR2543968B1 (fr) * | 1983-04-07 | 1985-06-21 | Siderurgie Fse Inst Rech | Conditionnement d'une matiere riche en carbone et procede de realisation |
KR950012777B1 (ko) * | 1989-03-31 | 1995-10-21 | 신닛본 세이데쓰 가부시기가이샤 | 액체연료의 연소방법 및 그 장치 |
US5051090A (en) * | 1990-04-09 | 1991-09-24 | Nippon Steel Corporation | Method and apparatus for burning liquid fuel |
-
1991
- 1991-03-15 EP EP19910906260 patent/EP0478789A4/en not_active Ceased
- 1991-03-15 US US07/741,503 patent/US5192203A/en not_active Expired - Fee Related
- 1991-03-15 WO PCT/JP1991/000353 patent/WO1991014900A1/ja not_active Application Discontinuation
- 1991-03-15 CA CA002049009A patent/CA2049009C/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0195205A (ja) * | 1987-10-05 | 1989-04-13 | Nippon Steel Corp | 液体燃料の燃焼方法 |
JPH0221106A (ja) * | 1988-07-08 | 1990-01-24 | Nippon Steel Corp | 液体燃料の燃焼装置 |
JPH02259311A (ja) * | 1989-03-31 | 1990-10-22 | Nippon Steel Corp | 液体燃料の燃焼装置 |
Also Published As
Publication number | Publication date |
---|---|
EP0478789A1 (en) | 1992-04-08 |
CA2049009C (en) | 1995-02-07 |
US5192203A (en) | 1993-03-09 |
EP0478789A4 (en) | 1993-03-24 |
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