Cyclone reactor with internal separation and axial recirculation

Details Cyclone reactor with internal separation and axial recirculation Cyclone reactor with internal separation and axial recirculation

1988-07-26

1989-11-21

Favors, Edward G.

Furnaces

Process

Burning pulverized fuel

110264, 422188, F23D 104

Patent

active

048814768

ABSTRACT:
A cyclone combustor apparatus contains a circular partition plate containing a central circular aperture. The partition plate divides the apparatus into a cylindrical precombustor chamber and a combustor chamber. A coal-water slurry is passed axially into the inlet end of the precombustor chamber, and primary air is passed tangentially into said chamber to establish a cyclonic air flow. Combustion products pass through the partition plate aperture and into the combustor chamber. Secondary air may also be passed tangentially into the combustor chamber adjacent the partition plate to maintain the cyclonic flow. Flue gas is passed axially out of the combustor chamber at the outlet end and ash is withdrawn tangentially from the combuston chamber at the outlet end. A first mixture of flue gas and ash may be tangentially withdrawn from the combustor chamber at the outlet end and recirculated to the axial inlet of the precombustor chamber with the coal-water slurry. A second mixture of flue gas and ash may be tangentially withdrawn from the outlet end of the combustor chamber and passed to a heat exchanger for cooling. Cooled second mixture is then recirculated to the axial inlet of the precombustor chamber. In another embodiment a single cyclone combustor chamber is provided with both the recirculation streams of the first mixture and the second mixture.

REFERENCES:
patent: 2704444 (1955-05-01), Van Loon
patent: 2769411 (1956-11-01), Simmons
patent: 4422388 (1983-12-01), Raskin
patent: 4442795 (1984-04-01), Strohmeyer, Jr.
patent: 4445844 (1984-05-01), Matthews
patent: 4454838 (1984-06-01), Strohmeyer, Jr.
patent: 4624191 (1986-11-01), Zauderer et al.
patent: 4651654 (1987-03-01), Erlandson et al.
patent: 4679511 (1987-07-01), Holmes et al.
patent: 4704084 (1987-11-01), Liu et al.
patent: 4708092 (1987-11-01), Engstrom
PETC-87-FR-1, Final Report unde U.S. DOE Contract No. DE-FG22-86PC90266.
Quarterly Report for the Period of Jan. 22, 1987-Apr. 30, 1987.
Topical Report, "Preliminary Component Design Package" Aug. 1987.

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