Cyclohexane production

Claim 1

THE METHOD FOR THE CONVERSION OF ALKYLATED BENZENES TO CYCLOHEXANE WHICH COMPRISES: (A) CONTACTING AN ALKYLATED BENZENE-HYDROGEN ADMIXTURE WITH CHROME-ALUMINA CATALYST IN AT LEAST ONE FIRST REACTOR AT 700 TO 1000 P.S.I.G. AND 1050 TO 1250* F.; (B) COOLING THE EFFLUENT FROM THE FIRST REACTOR TO A TEMPERATURE OF 250 TO 650*F.; (C) CONTACTING THE COOLED EFFLUENT FROM THE FIRST REACTOR WITH A HYDROGENATION CATALYST IN AT LEAST ONE SECOND REACTOR AT A PRESSURE SUBSTANTIALLY EQUIVALENT TO THAT OF THE FIRST REACTOR THEREBY FORMING CYCLOHEXANE AND METHYL CYCLOHEXANE; (D) SEPARATING METHYLCYCLOHEXANE FROM THE SECON REACTOR EFFLUENT; (E) CONTACTING THE METHYLCYCLOHEXANE WITH A DEHYDROGENATION CATALYST IN A THIRD REACTOOR AT 200 TO 500 P.S.I.G. AND 700 TO 1000* F. (F) RECYCLING THE REACTOR EFFLUENT OBTAINED IN THE THIRD REACTOR TO TE FIRST REACTOR; AND (G) RECOVERING CYCLOHEXANE FROM THE SECOND REACTOR EFFLUENT.

Claim 2

THE METHOD FOR THE CONVERSION OF ALKYLATED BENZENES TO CYCLOHEXANE WHICH COMPRISES: (A) CONTACTING AN ALKYLATED BENZENE-HYDROGEN ADMIXTURE WITH CHROME-ALUMINA CATALYST IN AT LEAST ONE FIRST REACTOR AT 700 TO 1000 P.S.I.G. AND 1050 TO 1250* F.; (B) COOLING THE EFFLUENT FROM THE FIRST REACTOR TO A TEMPERATURE OF 250 TO 650*F.; (C) CONTACTING THE COOLED EFFLUENT FROM THE FIRST REACTOR WITH A HYDROGENATION CATALYST IN AT LEAST ONE SECOND REACTOR AT A PRESSURE SUBSTANTIALLY EQUIVALENT TO THAT OF THE FIRST REACTOR THEREBY FORMING CYCLOHEXANE AND METHYL CYCLOHEXANE; (D) SEPARATING METHYLCYCLOHEXANE FROM THE SECON REACTOR EFFLUENT; (E) CONTACTING THE METHYLCYCLOHEXANE WITH A DEHYDROGENATION CATALYST IN A THIRD REACTOOR AT 200 TO 500 P.S.I.G. AND 700 TO 1000* F. (F) RECYCLING THE REACTOR EFFLUENT OBTAINED IN THE THIRD REACTOR TO TE FIRST REACTOR; AND (G) RECOVERING CYCLOHEXANE FROM THE SECOND REACTOR EFFLUENT.