BPA process improvement
First Claim
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1. A process for recovering phenol comprising the steps of:
- (A) contacting a first waste stream from a BPA production process which has been stripped of at least a portion of volatile sulfur compounds in said waste stream and a second waste stream from a phenol/acetone production process with a hydrocarbyl stream which is substantially immiscible with said waste streams, wherein said first waste stream and said second waste stream comprise phenol, and wherein at least a portion of said phenol from said first waste stream and/or from said second waste stream is transferred into said hydrocarbyl stream;
then(B) separating said hydrocarbyl stream after contacting step (A) from said waste streams; and
(C) recovering said phenol from said hydrocarbyl stream from step (B).
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Abstract
The present disclosure enables phenol recovery, purification and recycle in a simple, economic manner from waste streams from, for example, a phenol/acetone production process, e.g., a phenol/acetone plant or an upstream cumene hydroperoxide cleavage process step, and BPA production step, for use in the reaction with acetone to produce BPA. The disclosure therefore reduces the overall consumption of phenol in the production of BPA.
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Citations
8 Claims
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1. A process for recovering phenol comprising the steps of:
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(A) contacting a first waste stream from a BPA production process which has been stripped of at least a portion of volatile sulfur compounds in said waste stream and a second waste stream from a phenol/acetone production process with a hydrocarbyl stream which is substantially immiscible with said waste streams, wherein said first waste stream and said second waste stream comprise phenol, and wherein at least a portion of said phenol from said first waste stream and/or from said second waste stream is transferred into said hydrocarbyl stream;
then(B) separating said hydrocarbyl stream after contacting step (A) from said waste streams; and (C) recovering said phenol from said hydrocarbyl stream from step (B). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification