Process for producing .alpha. .beta.-unsaturated nitrile
First Claim
1. A process for producing an α
- ,β
-unsaturated nitrile, said process comprising the step of;
reacting (1) a hydrocarbon selected from an olefin selected from propylene and isobutylene, a paraffin selected from propane and butane, and tertiary butyl alcohol, (2) ammonia, and (3) an oxygen-containing gas, in a reactor at a high temperature in a gas phase over a fluidized bed, so as to prepare an α
,β
-unsaturated nitrile having the same number of carbon atoms as said hydrocarbon as a starting material,said reactor comprising a reactor vessel having therein, from a bottom of said reactor vessel, an oxygen-containing gas dispersing plate or pipe and a mixed gas dispersing pipe for dispersing a mixed gas of said hydrocarbon and said ammonia,a pressure loss in said oxygen-containing gas dispersing plate or pipe is controlled to the range of from 0.6 to 3.0 times a pressure loss in said fluidized bed.
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Accused Products
Abstract
A process for producing an α,β-unsaturated nitrile, the process comprising the step of: reacting (1) a hydrocarbon selected from an olefin selected from propylene and isobutylene, a paraffin selected from propane and butane, and tertiary butyl alcohol, (2) ammonia, and (3) an oxygen-containing gas, in a reactor at a high temperature in a gas phase over a fluidized bed, so as to prepare an α,β-unsaturated nitrile having the same number of carbon atoms as the hydrocarbon as a starting material, the reactor comprising a reactor vessel having therein, from a bottom of the reactor vessel, an oxygen-containing gas dispersing plate or pipe and a mixed gas dispersing pipe for dispersing a mixed gas of the hydrocarbon and the ammonia, a pressure loss in the oxygen-containing gas dispersing plate or pipe is controlled to the range of from 0.6 to 3.0 times a pressure loss in the fluidized bed.
4 Citations
14 Claims
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1. A process for producing an α
- ,β
-unsaturated nitrile, said process comprising the step of;reacting (1) a hydrocarbon selected from an olefin selected from propylene and isobutylene, a paraffin selected from propane and butane, and tertiary butyl alcohol, (2) ammonia, and (3) an oxygen-containing gas, in a reactor at a high temperature in a gas phase over a fluidized bed, so as to prepare an α
,β
-unsaturated nitrile having the same number of carbon atoms as said hydrocarbon as a starting material,said reactor comprising a reactor vessel having therein, from a bottom of said reactor vessel, an oxygen-containing gas dispersing plate or pipe and a mixed gas dispersing pipe for dispersing a mixed gas of said hydrocarbon and said ammonia, a pressure loss in said oxygen-containing gas dispersing plate or pipe is controlled to the range of from 0.6 to 3.0 times a pressure loss in said fluidized bed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- ,β
Specification
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- Resources
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Current AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
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Original AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
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InventorsShimizu, Hideyuki, Ohta, Masanobu
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Primary Examiner(s)Richter, Johann
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Assistant Examiner(s)MURRAY, JOSEPH H
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Application NumberUS08/930,857Time in Patent Office483 DaysField of Search558/320US Class Current558/320CPC Class CodesC07C 253/26 containing carbon-to-carbon...C07C 255/08 Acrylonitrile; Methacryloni...
