US3752455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for burning of pulverulent and fine grain material
Assignee: Prerovske Strojirny np
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Filing: 1969-08-21
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Granted: 1973-08-14
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Expires: 1989-08-21
Abstract
Abstract Pulverulent and fine grain material is burned in a burning aggregate of the cyclone type, into the upper cylindrical part of which the treated material is entrained by a stream of preheated air terminating tangentially into said burning aggregate, whereby particles of larger size forced by centrifugal force to the circumference of the cyclone remain in the burning zone longer than particles of smaller size, which occupy the central part of the cyclone.
Inventors
- 👤 Z Zacpal
- 👤 H Mostenice
- 👤 P Nemecek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:41
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J6/00; B01J6/001; B01J6/004; C; C04; C04B; C04B11/00; C04B11/02; C04B11/028; C04B2/00; C04B2/10; F; F27; F27B; F27B7/00; F27B7/20; F27B7/2016; F27B7/2025; F27B7/2033
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
221 words
An arrangement for burning pulverulent and fine grain material, particularly of powder lime and of similar material, comprising, a preheater for preheating the supplied material, said preheater having supply means for said material and supply means for hot gases, a burning chamber of the cyclone type, closed at the top, a cooling chamber, having means for the supply of air and discharge means for burned material, said burning chamber comprising a substantially cylindrical upper part having a tangential inlet for preheated air and material, and a conically narrowing lower part terminating in a channel for withdrawal of material and of gases, means connecting said channel for withdrawal of material with said cooler, conduit means connecting said cooler with said upper cylindrical part of said burning chamber for feeding air from said cooler to said chamber, conduit means for withdrawal of preheated material from said preheater and and terminating in said conduit means for entraining material preheated in said preheater in suspension with said air from said cooler and for simultaneously feeding said material and air into the upper cylindrical part of the burning chamber for burning, and at least one burner extending tangentially into the cylindrical part of said burning chamber to heat said entrained air and material and to move the same in a cyclonic path within the entire chamber.
Claim 2
Dependent Claim
221 words
An arrangement for burning pulverulent and fine grain material, particularly of powder lime and of similar material, comprising, a preheater for preheating the supplied material, said preheater having supply means for said material and supply means for hot gases, a burning chamber of the cyclone type, closed at the top, a cooling chamber, having means for the supply of air and discharge means for burned material, said burning chamber comprising a substantially cylindrical upper part having a tangential inlet for preheated air and material, and a conically narrowing lower part terminating in a channel for withdrawal of material and of gases, means connecting said channel for withdrawal of material with said cooler, conduit means connecting said cooler with said upper cylindrical part of said burning chamber for feeding air from said cooler to said chamber, conduit means for withdrawal of preheated material from said preheater and and terminating in said conduit means for entraining material preheated in said preheater in suspension with said air from said cooler and for simultaneously feeding said material and air into the upper cylindrical part of the burning chamber for burning, and at least one burner extending tangentially into the cylindrical part of said burning chamber to heat said entrained air and material and to move the same in a cyclonic path within the entire chamber.
Claim 3
Dependent Claim
52 words
An arrangement according to claim 1 wherein the outlet of said cyclone burning chamber terminates tangentially into a cyclone separator provided with an outlet for the burnt material at the bottom leading to said cooler and having an outlet for the combustion products separated from said burnt material connected to said preheater.
Claim 4
Dependent Claim
54 words
An arrangement according to claim 1 wherein an axially arranged outlet tube for the combustion products is provided in the lower part of the cyclone burning chamber terminating tangentially into the preheater, the Bottom of said cyclone burning chamber tapering into a hopper with an outlet for the burnt product terminating into the cooler.
Claim 5
Dependent Claim
96 words
Apparatus for burning granular material comprising a combustion chamber having a cylindrical upper portion and a conically narrowing lower portion, said chamber being closed at its upper end and having a discharge opening at its lower end, means for continuously feeding material to be burned tangentially to said cylindrical upper portion and means for axially withdrawing burnt material from the discharge opening, and means for combusting said material, said combustion means extending tangentially into said cylindrical upper portion and being adapted to cause said material to flow cyclonically in said combustion chamber to said discharge opening.
Claim 6
Dependent Claim
96 words
Apparatus for burning granular material comprising a combustion chamber having a cylindrical upper portion and a conically narrowing lower portion, said chamber being closed at its upper end and having a discharge opening at its lower end, means for continuously feeding material to be burned tangentially to said cylindrical upper portion and means for axially withdrawing burnt material from the discharge opening, and means for combusting said material, said combustion means extending tangentially into said cylindrical upper portion and being adapted to cause said material to flow cyclonically in said combustion chamber to said discharge opening.
Claim 7
Dependent Claim
35 words
Apparatus for burning granular material according to claim 4, wherein said combustion means comprises a plurality of burners for creating one or more flames extending tangentially within said cylindrical part in contact with said material.
Claim 8
Dependent Claim
21 words
Apparatus for burning granular material according to claim 4, including means for preheating said material before delivery to said combustion chamber.
Claim 9
Dependent Claim
24 words
Apparatus for burning granular material according to claim 6, including means for entraining said preheated material with air before entry into said combustion chamber.
Claim 10
Dependent Claim
22 words
Apparatus for burning granular material according to claim 4, including means for cooling said burnt material on discharge from said combustion chamber.
References Cited (Backward Citations)
US729009A
Cited
US3216125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |