| CAPACITY | 700.000 metric tons/year |
| CLASSIFICATION | CommPat. Market |
| PATENT ASSIGNEE'S COUNTRY | Japan |
| UPDATE | 12.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Process for mfg phenol, acetone & alpha-Me styrene from the prodt of cumene oxidation using a single back mixing reactor (I) & a single plug flow reactor (II); comprising in first stage (I) reacting cumene hydroperoxide, cumene & dimethylphenylcarbinol in presence of SO4H2, said IMPRO VED process comprising - Cleaving the cumene hydroperoxide in first stage (I) in pre sence of 150-350 ppm SO4H2 based on prodt of cumene oxidation, to form a reaction mixt of phenol & acetone having 0.5-3 % water while controlling the T 55-80C by (a) withdrawing a part of reaction mixt & passing the part to a heat exchanger & thus removing the heat of reaction for the cleavage of the cumene hydroperoxide in the heat exchan ger & recycling the part of the reaction mixt to first stage (I) - Controlling yield of alpha-Me styrene in first stage (I) < 35% - Adding acetone to the output of reaction mixt produced in first stage (I) in such an amount that acetone concn is 1.15- 1.8 times as much as in the reaction mixt produced from the first stage (I) - Without diverting the first stage reaction mixt with added acetone supplying the resultant reaction mixt from third step into (II) - Separating & recovering alpha-Me styrene from (II) |
| PATENT PHOTOCOPY | Available on request |
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