Standard Oil Company (Indiana)

The Standard Oil Company

John K Allen

Ralph J Bertolacini

Agnes M Palka

Gerard C Lammers

Edward A Lambers

A solid mixture of aldehydo-, keto-, carboxy-, carboxy-and-aldehydo-, and keto-and-carboxy-substituted benzene and toluene especially as obtained as residue from the manufacture of benzene di- and tricarboxylic acid is continuously subjected to pyrolysis at a temperature above 700.degree. C. with the production of a gaseous product and no substantial production of a solid carbonaceous char by adding such mixture as a suspension of comminuted solid in liquid water, but without an externally added catalyst, to a bed of inert, moving solids whose movement is stimulated by a gas flowing through said bed to fluidize, expand or make ebullient said bed of particles. Said gaseous product comprises hydrogen, carbon oxides, methane, benzene and toluene enriched in hydrogen and carbon dioxide content by the reaction of carbon and steam from the suspending liquid water thus substantially consuming the carbonaceous char which would otherwise be produced as a solid product. A source of molecular oxygen can be also advantageously added to the bed.

Continuous non-catalytic pyrolysis of aqueous slurry of

Commercially attractive amounts of benzene and toluene can be obtained from a solid mixture of aldehydo-, carboxy-, keto- and carboxy-, carboxy- and aldehydo-substituted benzene and toluene including such mixtures also containing cobalt and manganese salts of organic acids and inorganic and organic bromides obtained from the manufacture of benzene di- and tricarboxylic acids by non-catalytic pyrolysis of such mixture or gases and vapors therefrom at a temperature of at least 700.degree. C. Such non-catalytic pyrolysis is more technically attractive than catalytic pyrolysis conducted at a temperature of from 300.degree. C. to 500.degree. C. which has a short activity life.

Non-catalytic pyrolysis of residues from aromatic carboxylic acid

Short, less than one second, residence time non-catalytic hydropyrolysis is conducted by rapid heating at more than 600.degree. C. per second of a solid mixture of aldehydo-, carboxy-, keto- and carboxy-, and aldehydo- and carboxy- substituted benzene and toluene and such solid also containing cobalt and/or manganese salts of organic acids and organic and/or inorganic bromides obtained from the manufacture of benzene di- and tricarboxylic acids up to a temperature of at least 700.degree. C. Such short residence hydropyrolysis produces attractive amounts of readily recoverable benzene and toluene as well as lower alkanes and alkenes and a solid carbonaceous char which can be burned to provide heat for the hydropyrolysis. The short residence hydropyrolysis is not subject to short activity and frequent periods of off-stream time as are the catalytic pyrolysis conducted at lower temperatures of from 300.degree. up to 500.degree. C.

Short residence hydropyrolysis of residues from aromatic carboxylic acid

Solid residues obtained from the manufacture of benzene di- or tricarboxylic acid by the oxidation of di- or trimethyl substituted benzene with air in the presence of catalysis from a source of bromine in combination with one or both of cobalt and manganese when incinerated can produce bromine-containing particulates whose discharge into the atmosphere may be undesirable. The discharge of such bromine-containing particles into the atmosphere can be avoided by subjecting said solid residue in comminuted form or such form suspended in 30 to 50 weight percent water to continuous pyrolysis in the presence of an inert particulate solid in a zone heated to a temperature of at least 700.degree. C., contacting the gaseous product or a portion thereof after removal of benzene and toluene therefrom with a carbonate, hydroxide or oxide of one or both of calcium and magnesium and then incinerating the gaseous product or said portion thereof.

Combination of pyrolysis and incineration of solid mixture of

A process for the isomerization of 1,5 and 1,6-dimethylnaphthalenes to a product including 2,6-dimethylnaphthalene which comprises passing a feed stream containing the 1,5 and 1,6 isomers over a catalyst at isomerization reaction conditions which catalyst consists essentially of from about 35 to about 45 weight per cent of the hydrogen form of mordenite dispersed in an alumina matrix.

Process for the isomerization of dimethylnaphthalenes using a

Fire resistant modified polyurethane foams are prepared from polyols and the monomeric products formed by the pre-reaction of polyarylpolyisocyanates and halogenated phthalic anhydrides at a temperature of about 210.degree. to 300.degree.C. wherein the weight ratio of the polyarylpolyisocyanate to be halogenated phthalic anhydride is from above 2:1 to 10:1 and wherein the amount of the imide incorporated into the polyarylpolyisocyanate varies from about 25 to about 75 percent.

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St. Charles, IL, United States of America

John K Allen