Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Patent
1985-11-22
1987-12-22
Garvin, Sr., Patrick P.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Solids contacting and mixing
208153, 208113, 422144, 55459R, F27B 1508, C10G 3514
Patent
active
047145412
ABSTRACT:
Disclosed is a method and apparatus for improving the efficiency of a cyclone by the addition of a rough-cut device to a gas outlet tube of the cyclone. The rough-cut device includes a tangentially located dust collector that gradually reduces in size and is connected to a dipleg that can be buried in a dense bed or provided with a trickle valve. Gases containing entrained solid particles exit the gas outlet tube of the cyclone in an upward flowing spiral with the solid particles held against the wall of the tube by the centrifugal force of the spiraling gas. When the solid particles reach the tangential exit port, the centrifugal force causes the particles to follow the direction of the wall leaving the gas stream and falling toward the dipleg due to the loss of the upward driving force of the gases. The gases continue in an upward direction and exit the top of the rough-cut device with fewer entrained solid particles. The gases are not required to change direction and, after separation, carry fewer entrained solids; therefore, the pressure drop through the rough-cut device is minimal.
REFERENCES:
patent: 3064811 (1962-11-01), Mumper
patent: 3790143 (1974-02-01), Vix
patent: 4219442 (1980-08-01), Vickers
patent: 4244716 (1981-01-01), Duske
patent: 4394349 (1983-07-01), Cartmell
Buyan Frank M.
Ross Mark S.
Caldarola Glenn
Garvin, Sr. Patrick P.
Gilman Michael G.
Keen Malcolm D.
McKillop Alexander J.
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