Flow reactors for chemical conversions with heterogeneous...

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including heat exchanger for reaction chamber or reactants...

Reexamination Certificate

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Details

C422S198000, C422S211000, C422S198000, C422S201000

Reexamination Certificate

active

09920981

ABSTRACT:
Improved apparatus for use in process systems which include exothermic chemical conversions of organic compounds to value added products is disclosed, more particularly, flow reactors for exothermic chemical conversions using a fixed heterogeneous catalyst with means for control of the exotherm. Flow reactors of the invention comprise a plurality of walled conduits each having an outer surface disposed for contact with a heat-transfer medium, an inlet distribution manifold adapted for flow communication with a downstream manifold through channels formed by heterogeneous catalytic material disposed within each conduit during operation in a sequence of zones for catalyst having the same or different length along the longitudinal coordinate of the conduit and within each zone essentially uniform cross-section of the conduit measured in a plane perpendicular to the longitudinal coordinate thereby defining volume of the zone, and the sequence of zones comprising of at least two zones such that each downstream zone has a larger or smaller cross-section than the contiguous upstream zone. Another aspect of the invention includes processes which use such flow reactors, for example the continuous manufacture of maleic anhydride.

REFERENCES:
patent: 3566961 (1971-03-01), Lorenz et al.
patent: 3850233 (1974-11-01), Wanka et al.
patent: 3871445 (1975-03-01), Wanka et al.
patent: 3898295 (1975-08-01), Wanka et al.
patent: 4657741 (1987-04-01), Vogl
patent: 4929798 (1990-05-01), de Lasa
patent: 5161605 (1992-11-01), Gutlhuber
patent: 29 29 300 (1981-01-01), None
patent: 2929300 (1981-01-01), None
patent: 1033167 (2000-09-01), None
patent: 2040432 (1980-08-01), None
patent: 6154229 (1986-03-01), None
patent: 9501834 (1995-01-01), None
An Alternative Method to Control the Longitudinal Temperature Profilein Packed Tubular Reactions (Ing. Chim. Ital., v. 12, n. 1-2, pp. 516, gennaio-febbraio 1976), authors P. Fontana and B. Canepa.
“Technology of Lurgi's Low Pressure Methanol Process” (CHEMTECH, July, 973, pp. 430-435), author E. Supp.
“Variable Cross-Section Reactors for Highly Exothermic Reactions”, Chemical Engineering Science, vol. 40, No. 6, pp. 1011-1017 (1985), author Akella, et. al.
Patent Abstracts of Japan vol. 010, No. 214 (C-362), Jul. 25, 1986 and JP 61 054229 A.

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