EP0264735A1
Expired / Lapsed
EP
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Cyclone for separation of a particulate material from a gas
Assignee: ABB Stal AB
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Filing: 1987-10-09
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Granted: —
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Expires: 2007-10-09
Abstract
Abstract A cyclone (3) for separation of a particulate material from a gas, for example ashes and/or consumed bed material, which in a PFBC power plant leave/leaves a bed vessel together with combustion gases. According to the invention the lower part of the cyclone (3) is formed with a bottom (3d) through which an outlet tube (40) for separated material projects into the cyclone (3), the outlet tube together with said bottom (3d) and the surrounding cyclone wall (41) forming an annular space (42), open on its top.
Inventors
- 👤 Roine Brännström
- 👤 Dirk Veenhuizen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 05:15
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; F23J15/027; B; B01; B01D; B01D45/00; B01D45/12; B04; B04C; B04C5/00; B04C5/08; B04C5/085; B04C5/14; B04C5/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
89 words
A cyclone (3) for separation of a particulate material from a gas, for example ashes and/or consumed bed material, which for example in a PFBC power plant leave/leaves a bed vessel (2) together with combustion gases, characterized in that the lower part of the cyclone (3) is formed with a bottom (3d) through which an outlet tube (40) for separated material projects into the cyclone (3), the outlet tube together with said bottom (3d) and the surrounding cyclone wall (41) forming an annular space (42), open on its top.
Claim 2
Dependent Claim
89 words
A cyclone (3) for separation of a particulate material from a gas, for example ashes and/or consumed bed material, which for example in a PFBC power plant leave/leaves a bed vessel (2) together with combustion gases, characterized in that the lower part of the cyclone (3) is formed with a bottom (3d) through which an outlet tube (40) for separated material projects into the cyclone (3), the outlet tube together with said bottom (3d) and the surrounding cyclone wall (41) forming an annular space (42), open on its top.
Claim 3
Dependent Claim
31 words
Cyclone according to Claim 1, characterized in that the diameter of the bottom (3d) of the cyclone (3) is at least three times the outer diameter of the outlet tube (40).
Claim 4
Dependent Claim
29 words
Cyclone according to Claim 1 or 2, characterized in that the depth of the annular space (42) is at least twice the outer diameter of the outlet tube (40).
Claim 5
Dependent Claim
26 words
Cyclone according to any of the preceding Claims, characterized in that the lower part (3c) of the cyclone (3), surrounding the outlet tube (40), is cylindrical.
Claim 6
Dependent Claim
32 words
Cyclone according to any of the preceding Claims, characterized in that the outlet tube (40) opens out into a space (12) with a larger diameter than that of the outlet tube (40).
Claim 7
Dependent Claim
92 words
Cyclone according to any of the preceding Claims, characterized in that the cyclone (3) is formed with a gradually decreasing cross section by arranging series-connected parts (3c, 3e, 3g) with consecutively smaller diam eters each of these parts having a bottom (3d, 3f, 3h) through which an outlet tube (40, 45, 46) for separated material projects towards the main part of the cyclone (3), and that each of said parts, together with the associated bottom (3d, 3f, 3h) and part (3c, 3e, 3g), forms an annular space (42) open on its top.
Claim 8
Dependent Claim
40 words
Cyclone according to any of the preceding Claims, characterized in that the lower part (3c, 3e, 3g) of the cyclone (3) is surrounded by a cooling jacket (50) which guides a gas stream along said lower part (3c, 3e, 3g).
Claim 9
Dependent Claim
33 words
Cyclone according to any of the preceding claims 1-6, characterized in that the lower part (3c, 3e, 3g) of the cyclone (3) is surrounded by a cooling jacket (60) for cooling by water.
References Cited (Backward Citations)
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