Selective placement of fluid injection in a riser reactor equipp

Details Selective placement of fluid injection in a riser reactor equipp Selective placement of fluid injection in a riser reactor equipp

1986-05-28

1987-09-08

Richman, Barry S.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208153, 422140, 422144, 422147, 422214, B01J 818

Patent

active

046922350

ABSTRACT:
An apparatus for reducing the pressure drop in a riser reactor equipped with a horizontal tee joint connection which uses a fluid injection means selectively located at a point juxtaposed to the connection of the horizontal and vertical tubes to prohibit fine particle catalysts from backflow down the elongated riser reactor which omission thereby provides (1) an easy upflow of catalysts and hydrocarbon vapors through the riser reactor and (2) an incentive for the flow of particles up through the elongated riser and transfer laterally to the horizontal tee joint connection.

REFERENCES:
patent: 2741546 (1956-04-01), Sweeney et al.
patent: 2874113 (1959-02-01), Smith et al.
patent: 3353925 (1967-11-01), Baumann et al.
patent: 3475326 (1969-10-01), Luckenbach
patent: 3492221 (1970-01-01), Pfeiffer
patent: 3607126 (1971-09-01), Pfeiffer
patent: 4414100 (1983-11-01), Krug et al.

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