Patent EP0478305A2 successfully refreshed from Google Patents.
EP0478305A2
Expired / Lapsed
EP
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Combustor and combustion apparatus
Assignee: Hitachi Ltd
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Filing: 1991-09-25
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Granted: —
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Expires: 2011-09-25
Abstract
Abstract A combustor has a premixing type combustion burner (30) which has an atomizer (40) for ejecting a liquid fuel together with combustion air to atomize the liquid fuel. The atomizer is comprised of an inner shell (45) to an inner peripheral surface of which the liquid fuel is supplied, an outer shell (41) defining a passage for the combustion air running substantially straight between the outer shell itself and an outer peripheral surface of the inner shell, and a swirling-flow guide plate (50) for swirling the combustion air passed into the inner shell, while directing it in a downstream direction. The combustor further includes a resistor (35) abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of the premixing type combustion burner for providing a resistance to a premixture ejected from the premixing type combustion burner.
Inventors
- 👤 Hironobu Kobayashi
- 👤 Shigeru Azuhata
- 👤 Masayuki Taniguchi
- 👤 Tadayoshi Murakami
- 👤 Kiyoshi Narato
- 👤 Michio Kuroda
- 👤 Satoshi Tsukahara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:42
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23D; F23D11/00; F23D11/005; F23D11/36; F23D11/40; F23D11/402; F23D23/00; F23J; F23J15/00; F23J15/02; F23J15/04; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20; F23L; F23L7/00; F23D2900/00; F23D2900/11101
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
147 words
A combustor including a premixing type combustion burner which has an atomizer for ejecting a liquid fuel together with combustion air to atomize the liquid fuel, wherein said atomizer is comprised of an inner shell, to an inner peripheral surface of which said liquid fuel is supplied, an outer shell defining a passage for the combustion air running substantially straightly between the outer shell itself and an outer peripheral surface of said inner shell, and a swirling-flow guide plate for swirling the combustion air passed into the inner shell, while directing it in a downstream direction; and said combustor further includes a resistor abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of said premixing type combustion burner for providing a resistance to a premixture ejected from said premixing type combustion burner.
Claim 2
Dependent Claim
127 words
A combustor including a premixing type combustion burner having a space in which a liquid fuel is mixed with combustion air, said combustor comprising: a means for forming a swirling flow of the combustion air in said space; a means for forming a straightly running flow of the combustion air, flowing in a downstream direction, around the swirling flow; a means for supplying said liquid fuel to a boundary between said swirling flow and said straightly running flow; and a means provided substantially downstream of the center of said swirling flow and in the vicinity of an outlet of said premixing type combustion burner for forming a circulating flow of a combustion gas produced from the combustion of a premixture ejected from said premixing type combustion burner.
Claim 3
Dependent Claim
90 words
A combustor including a premixing type combustion burner having a space in which a liquid fuel is mixed with combustion air, said combustor comprising: an air ratio distribution deuniformalizing means for lowering the air ratio distribution within said space only at a specified location; and a means provided substantially downstream of said specified location and in the vicinity of an outlet of said premixing type combustion burner for forming a circulating flow of a combustion gas produced by combustion of a mixture of said liquid fuel and said combustion air.
Claim 4
Dependent Claim
24 words
A combustor according to claim 1, wherein the inner shell of said atomizer has an inner periphery increased in diameter in a downstream direction.
Claim 5
Dependent Claim
37 words
A combustor according to claim 1, wherein the inner and outer peripheral surfaces of the inner shell of said atomizer are connected with each other at an acute angle at the downstream end of said inner shell.
Claim 6
Dependent Claim
31 words
A combustor according to claim 1, wherein the area of an opening in said inner shell is substantially equal to the area of an opening between said inner and outer shells.
Claim 7
Dependent Claim
26 words
A combustor according to claim 1, wherein the downstream end of said outer shell is located more downstream than the downstream end of said inner shell.
Claim 8
Dependent Claim
38 words
A combustor according to claim 1, wherein the number of said premixing type combustion burners having said resistor provided in the vicinity of the outlet is one or more, and said combustor further includes a diffusion combustion burner.
Claim 9
Dependent Claim
45 words
A combustor according to claim 8, wherein a plurality of said premixing type combustion burners each having said resistor provided in the vicinity of the outlet are provided on the same circumference, and said diffusion burner is provided substantially at the center of said circumference.
Claim 10
Dependent Claim
28 words
A combustor according to claim 1, further comprising a combustion air nozzle for ejecting combustion air from the periphery of the outlet of said premixing type combustion burner.
Claim 11
Dependent Claim
168 words
A gas turbine apparatus comprising: a combustor including a premixing type combustion burner which has an atomizer for ejecting a liquid fuel together with combustion air to atomize the liquid fuel, wherein said atomizer is comprised of an inner shell, to an inner peripheral surface of which said liquid fuel is supplied, an outer shell defining a passage for the combustion air running substantially straightly between the outer shell itself and an outer peripheral surface of said inner shell, and a swirling-flow guide plate for swirling the combustion air passed into the inner shell, while directing it in a downstream direction, and said combustor further includes a resistor abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of said premixing type combustion burner for providing a resistance to a premixture ejected from said premixing type combustion burner; and a gas turbine adapted to be driven by an exhaust gas discharged from said combustor.
Claim 12
Dependent Claim
136 words
A combustion process for burning a fuel-air mixture after previous mixing of a liquid fuel with combustion air, comprising the steps of: forming a swirling flow of said combustion air, which flow swirls while running in a downstream direction; forming a straightly running flow of said combustion air around said swirling flow, which flow runs in the downstream direction, supplying said liquid fuel to a boundary between said swirling flow and said straightly running flow to premix said liquid fuel with said combustion air; and ejecting a mixture resulting from the premixing of said liquid fuel with said combustion air from a burner outlet to burn said mixture, and instantaneously circulating a combustion gas produced from such combustion to the vicinity of said burner outlet substantially downstream of the center of swirling of said swirling flow.
Claim 13
Dependent Claim
45 words
A combustion process according to claim 12, further comprising the step of heating said liquid fuel to a temperature range not exceeding the boiling point, in an atomized atmosphere, of that one of the components of said liquid fuel, which has the lowest boiling point.
Claim 14
Dependent Claim
69 words
A combustion process according to claim 12, wherein said liquid fuel, before being supplied to said premixing type combustion burner, is heated to a temperature range represented by the following expression: T °C ≧ temperature°C of liquid fuel ≧ T x 0.8 °C wherein T represents the boiling point, in the atomized atmosphere, of that one of the components of said liquid fuel, which has the lowest boiling point.
Claim 15
Dependent Claim
76 words
A combustion apparatus including a combustor designed so that combustion air and an atomized liquid fuel are premixed with each other in a premixing type combustion burner and the resulting mixture is burned in a combustion chamber, said apparatus comprising a means for heating the liquid fuel to a temperature range not exceeding the boiling point in an atomized atmosphere of that one of the components of said liquid fuel, which has the lowest boiling point.
Claim 16
Dependent Claim
93 words
A combustion apparatus including a combustor designed so that combustion air and an atomized liquid fuel are premixed with each other in a premixing type combustion burner and the resulting mixture is burned in a combustion chamber, said apparatus comprising a means for heating the liquid fuel to a temperature range represented by the following expression: T °C ≧ temperature°C of liquid fuel ≧ T x 0.8°C wherein T represents the boiling point, in a sprayed atmosphere, of that one of the components of said liquid fuel, which has the lowest boiling point.
Claim 17
Dependent Claim
19 words
A combustion apparatus according to claim 15, wherein a heat source in said heating means is the combustion air.
Claim 18
Dependent Claim
66 words
A combustion apparatus according to claim 15, further comprising: a means for discriminating the type of said liquid fuel; and a means for calculating the boiling point of that one of the components of said liquid fuel discriminated in type, which has the lowest boiling point, and wherein said heating means is adapted to heat said liquid fuel on the basis of the calculated boiling point.
Claim 19
Dependent Claim
40 words
A combustion apparatus including a combustor for burning a liquid fuel, said apparatus comprising: a means for discriminating the type of liquid fuel; and a means for heating said liquid fuel in accordance with the discriminated type of liquid fuel.
Claim 20
Dependent Claim
71 words
A combustion apparatus according to claim 19, further comprising: a means for calculating the boiling point of that one of the components of said liquid fuel discriminated in type, which has the lowest boiling point; and a means for determining a heating temperature for said liquid fuel on the basis of the calculated boiling point, and wherein said heating means is adapted to heat the liquid fuel to the determined temperature.
Claim 21
Dependent Claim
37 words
A combustion apparatus according to claim 19, wherein said discriminating means is adapted to discriminate the type of said liquid fuel on the basis of physical property values provided before and after said liquid fuel is heated.
Claim 22
Independent Claim
75 words
A method for preheating a liquid fuel sprayed into a premixing type combustion burner, wherein said liquid fuel, before being supplied to said premixing type combustion burner, is heated to a temperature range represented by the following expression: T °C ≧ temperature°C of liquid fuel ≧ T x 0.8°C wherein T represents the boiling point, in a sprayed atmosphere, of that one of the components of said liquid fuel, which has the lowest boiling point.
Claim 23
Dependent Claim
64 words
A combustion apparatus including a combustor from which a burnable intermediate combustion product is discharged, said apparatus comprising: an absorbing device in which an absorbing solution for absorbing said intermediate combustion product is reacted with said combustion intermediate product; and an absorbing solution ejecting device for ejecting said absorbing solution containing said intermediate combustion product absorbed therein into a combustion chamber in said combustor.
Claim 24
Dependent Claim
42 words
A combustion apparatus according to claim 23, wherein said absorbing solution ejecting device includes a means for restraining the flow rate of said ejected absorbing solution to such a level that said absorbing solution can be all evaporated in said combustion chamber.
Claim 25
Dependent Claim
39 words
A combustion apparatus according to claim 23, wherein said absorbing solution ejecting device includes an ejecting port from which said absorbing solution is ejected into the vicinity of a leading end of a flame produced in said combustion chamber.
Claim 26
Dependent Claim
46 words
A process for treating a burnable intermediate combustion product discharged from a combustion chamber in a combustor, comprising the steps of: absorbing said intermediate combustion product into an absorbing solution; and spraying said absorbing solution containing said intermediate combustion product absorbed therein into said combustion chamber.
References Cited (Backward Citations)
No citation records indexed.
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