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US4012201A Expired / Lapsed US ⏱️ 0.0 years remaining

Reactor

Assignee: Tioxide Group Ltd
•
Filing: 1974-10-23
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Granted: 1977-03-15
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Expires: 1994-10-23
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Abstract

Abstract Apparatus suitable for oxidizing a metal halide in the vapor phase wherein at least part of the wall of the reaction zone is formed from crimped annular plates separated by uncrimped annular plates to form orifices through which at least one of the reactants can be introduced into the reaction zone.

Inventors

  • 👤 Stanley Powell
  • 👤 Glyn Thomas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 14:41
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/14; C01B13/20; C01B13/22; B; B01; B01J; B01J4/00; B01J4/001

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 250 words
In a reactor suitable for reacting a metal halide vapor and an oxidizing gas at an elevated temperature to produce the corresponding metal oxide, said reactor comprising an inlet port at one end of said reactor for introducing hot gas thereinto, an outlet port at the opposite end of said reactor for removing reaction products therefrom and a reaction section in said reactor between said inlet port and said outlet port, the improvement comprising the side walls of said reaction section comprising a plurality of crimped annular plates separated by uncrimped annular plates, said crimped and uncrimped annular plates being disposed generally perpendicular to the longitudinal axis of said reaction section, the crimps of said crimped annular plates being generally radially directed with respect to the longitudinal axis of said reaction section, whereby generally radially extending orifices through said reaction section side walls are formed between adjacent crimped annular plates and uncrimped annular plates; said reactor further comprising means for introducing at least one reactant radially inwardly through said orifices into the interior of said reaction section and means surrounding said reaction section walls for facilitating uniform introduction of reactants through said orifices; the openings of said orifices through the radially inner and outer surfaces of said reaction section side walls being distributed in a substantially continuous manner around the circumference of the side walls whereby the introduction of reactant gas through said side walls into the reaction section is effected substantially uniformly around the circumference of the reaction section.
Claim 2
Dependent Claim 250 words
In a reactor suitable for reacting a metal halide vapor and an oxidizing gas at an elevated temperature to produce the corresponding metal oxide, said reactor comprising an inlet port at one end of said reactor for introducing hot gas thereinto, an outlet port at the opposite end of said reactor for removing reaction products therefrom and a reaction section in said reactor between said inlet port and said outlet port, the improvement comprising the side walls of said reaction section comprising a plurality of crimped annular plates separated by uncrimped annular plates, said crimped and uncrimped annular plates being disposed generally perpendicular to the longitudinal axis of said reaction section, the crimps of said crimped annular plates being generally radially directed with respect to the longitudinal axis of said reaction section, whereby generally radially extending orifices through said reaction section side walls are formed between adjacent crimped annular plates and uncrimped annular plates; said reactor further comprising means for introducing at least one reactant radially inwardly through said orifices into the interior of said reaction section and means surrounding said reaction section walls for facilitating uniform introduction of reactants through said orifices; the openings of said orifices through the radially inner and outer surfaces of said reaction section side walls being distributed in a substantially continuous manner around the circumference of the side walls whereby the introduction of reactant gas through said side walls into the reaction section is effected substantially uniformly around the circumference of the reaction section.
Claim 3
Dependent Claim 21 words
Apparatus as claimed in claim 1 wherein the annular plates have a thickness in the range 0.001 in. to 0.125 in.
Claim 4
Dependent Claim 28 words
Apparatus as claimed in claim 1 wherein the annular plates are provided with crimps consisting of from 1 to 50 elongated, radially-directed, depressions per inch of inner circumference.
Claim 5
Dependent Claim 25 words
Apparatus as claimed in claim 1 wherein the crimps are elongated radially directed depressions having a depth in the range 0.002 in. to 1 in.
Claim 6
Dependent Claim 16 words
Apparatus as claimed in claim 1 wherein the reaction section is followed by a reaction-completion section.
Claim 7
Dependent Claim 24 words
Apparatus as claimed in claim 5 further comprising means for introducing a gas through the wall of the reaction-completion section into the reaction-completion section.
Claim 8
Dependent Claim 36 words
Apparatus as claimed in claim 5 wherein the reaction-completion section is followed by a quenching section; said apparatus further comprising means for introducing a gas through the wall of the quenching section into the quenching section.
Claim 9
Dependent Claim 26 words
Apparatus as claimed in claim 7 further comprising means for introducing cooled recycled product gas through the wall of the quenching section into the quenching section.
Claim 10
Dependent Claim 17 words
Apparatus as claimed in claim 1 wherein there is provided a pre-conditioning section before the reaction section.
Claim 11
Dependent Claim 24 words
Apparatus as claimed in claim 9 further comprising means for introducing a gas through the wall of the pre-conditioning section into the pre-conditioning section.
Claim 12
Dependent Claim 30 words
Apparatus as recited in claim 9 further comprising means for introducing a gas into the reactor near the end of the pre-conditioning section at the beginning of the reaction section.
Claim 13
Dependent Claim 53 words
Apparatus as recited in claim 11 wherein the gas introduced at the beginning of the reaction section first passes through restricting orfices having a diameter in the range 0.016 inches to 0.25 inches and thereafter passes into the reaction section through orfices having a diameter in the range 0.016 inches to 0.30 inches.
Claim 14
Dependent Claim 58 words
A reactor as recited in claim 1 wherein said reactant introducing means comprises a jacket surrounding the exterior of the reaction section side walls, said jacket defining an enclosed space in communication with the outer ends of said generally radial orfices, said jacket further being provided with an inlet port for introducing a reactant into said enclosed space.
Claim 15
Dependent Claim 108 words
Apparatus as recited in claim 13 wherein said means for facilitating uniform introduction of reactants comprises a gas distributor plate disposed in said enclosed space, said plate being radially spaced from and surrounding the orifice-containing side walls of said reaction section, said distributor plate further being provided with restricting orifices for gas passing between the jacket inlet port and the orifices in the reaction section side walls, said restricting orifices being sufficiently small to produce a pressure drop in a gas flowing between the jacket inlet port and the orifices in the reaction section side walls, whereby a uniform flow of gas into the reaction section is promoted.
Claim 16
Dependent Claim 21 words
Apparatus as claimed in claim 14 wherein the restricting orifices have a diameter in the range 0.002 in. to 0.125 in.
Claim 17
Dependent Claim 62 words
Apparatus as recited in claim 13 further comprising at least one sealing plate extending radially between the side wall of the reaction section and the surrounding jacket, said sealing plate dividing the enclosed space defined by said jacket into separate transverse sections, each separate section being provided with an inlet port through said jacket for separately introducing a reactant into that section.

References Cited (Backward Citations)

US2887456A Cited
US3088271A Cited
US3531247A Cited
US3501262A Cited
US3203763A Cited
US3438720A Cited
US3464792A Cited
US3457038A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-03-14 1980-09-13 1981-03-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-03-14 1984-09-13 1985-03-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-03-14 1988-09-13 1989-03-15 $7700.00 Window Closed / Lapsed

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