Chemistry: physical processes – Physical processes – Crystallization
Patent
1974-11-04
1976-06-01
Tayman, Jr., James H.
Chemistry: physical processes
Physical processes
Crystallization
208146, 23284, 55308, 55529, 55484, B01J 800, B01D 5000
Patent
active
039605086
ABSTRACT:
A trough-type scale trap for use with a refinery or chemical plant reactor having a catalyst bed subject to plugging by fine particles. Compared to prior art traps, the trough-type scale trap of the invention is characterized by a larger volumetric capacity and screen area and is substantially easier to construct and to install or remove from closed reactor vessels than conventional traps. Its typical embodiment is as a series of parallel troughs having rectangular openings and disposed chordally across the reactor normal to the direction of flow. In one embodiment, the trough is a rectangular parallelepiped; in another embodiment, the substantially rectangular opening is reduced by tapering to a bottom significantly smaller than the inlet opening.
REFERENCES:
patent: 3006740 (1961-10-01), Maggio
patent: 3691736 (1972-09-01), Neumann
patent: 3824080 (1974-07-01), Smith et al.
patent: 3824081 (1974-07-01), Smith et al.
Bessant Glyndwr A. R.
Eichamer Paul D.
Koros Robert M.
Schieni Steven R.
Exxon Research and Engineering Company
Paris F. D.
Tayman, Jr. James H.
Wells H. N.
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