Method and apparatus for the preparation of ketones
First Claim
Patent Images
1. A method of preparing a desired ketone comprising the steps of:
- providing a catalytic bed;
providing a raw material feed comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic acid in the ratio of from 1;
2 to 1;
20;
passing said raw material feed through said catalytic bed at a temperature of between about 350°
C. and 500°
C. at a weight hourly space velocity greater than two; and
separating said desired ketone.
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Abstract
A method and apparatus for continuously producing a ketone in a tube reactor at elevated weight hourly space velocities and in the presence of a catalyst from feed material comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic acid and a method for using the ketone production method to produce herbicidal or other agricultural compounds.
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Citations
30 Claims
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1. A method of preparing a desired ketone comprising the steps of:
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providing a catalytic bed;
providing a raw material feed comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic acid in the ratio of from 1;
2 to 1;
20;
passing said raw material feed through said catalytic bed at a temperature of between about 350°
C. and 500°
C. at a weight hourly space velocity greater than two; and
separating said desired ketone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of preparing a desired ketone comprising the steps of:
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providing a catalytic bed;
providing a raw material feed comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic acid in the ratio of from 1;
2 to 1;
20;
passing said raw material feed through said catalytic bed in a vertically upward direction at a temperature of between 350°
C. and 500°
C.; and
separating said desired ketone. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 24, 25, 27, 29)
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16. A method of preparing a ketone comprising:
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providing a plurality of tube reactors, each having a catalytic bed;
providing a raw material feed comprised of first and second raw materials which react in a ketone production reaction to produce said ketone;
selectively passing said raw material feed through the catalytic bed of one of said plurality of tube reactors and not the other(s) of said plurality of tube reactors at a temperature of between 350°
C. and 500°
C.; and
recovering said ketone.
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23. An apparatus for producing a ketone from first and second feed materials via a ketone production reaction comprising:
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a feed material source for providing said first and second feed materials;
a plurality of tube reactors, each having an inlet end, an outlet end and a catalytic bed therebetween;
means for selectively supplying said first and second feed materials to the inlet end of one of said plurality of tube reactors in a predetermined ratio and preventing the supply of said first and second feed materials to the inlet end of the other(s) of said plurality of tube reactors.
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26. A method of preparing a desired ketone comprising the steps of:
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providing a catalytic bed;
providing a raw material feed comprised of a first carboxylic acid or aldehyde or their derivatives and a second carboxylic acid in the ratio of from 1;
2 to 1;
20;
passing said raw material feed through said catalytic bed at a temperature of between about 100°
C. and 500°
C. and at a pressure in the range of about 10 psig to about 200 psig; and
separating said desired ketone.
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28. A process for the preparation of a compound of formula (I)
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30. A process for the preparation of a compound of formula (X)
Specification