Method of treating a petroleum fraction using selective solid adsorbents

Claim 1

A METHOD OF TREATING A PETROLEUM FRACTION CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROBONS WHICH COMPRISES FRACTIONATING SAID FRACTION TO PRODUCE A LIGHT NAPHTHA HAVING AN END LOILING POINT IN THE RANGE 150-250* F. AND A HEAVY NAPHA HAVING AN END BOILING POINT IN THE RANGE 350-450* F., SUBJECTING SAID HEAVY NAPHTHA TO CATALYTIC REFORMING WITH THE RESULTING PRODUCTION OF HYDROGEN, C5 C4 AND LIGHTER HYDROCARBONS AND A RELATIVELY WIDE BOILING REFORMATE, SEPARATING SAID HYDROGEN AND SAID C4 HYDROCARBONS FROM SAID REFORMATE, FRACTIONATING THE REMAINING REFORMATE INTO A LIGHT REFORMATE HAVING AN END BOILING POINT IN THE RANGE 150-250* F. AND A HEAVY REFORMATE HAVING AN END POINT IN THE RANGE 350-450* F., INTRODUCING SAID LIGHT NAPHTHA AND SAID LIGHT REFORMATE INTO CONTACT WITH A SELECTIVE SOLID ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO REMOVE STRAIGHT CHAIN HYDROCARBONS THEREFROM TO YIELD A RESULTING TREATED LIGHT NAPHTHA-REFORMATE EFFLUENT, HAVING A REDUCED STRAIGHT CHAIN HYDROCARBON CONTENT, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT BY CONTACTING SAID ADSORBENT AT AN ELEVATED TEMPERATURE WITH SAID SEPARATED C4 HYDROCABON SEPARATING FROM THE RESULTING DESORPTION EFFLUENT THE C4 HYDROCARBONS AND THE RESULTING DESORBED STRAIGHT CHAIN HYDROCARBONS, INTRODUCING THE RESULTING DESORBED STRAIGHT CHAIN HYDROCARBONS INTO CONTACT WITH AN ISOMERIZATION CATALYST TO ISOMERIZE SAID STRAIGHT CHAIN HYDROCARBONS, RECOVERING FROM THE ISOMERIZATION REACTION AN ISOMATE, INTRIDUCING SAID ISOMATE INTO CONTACT WITH A SELECTIVE SOLID ABSORBENT MATERIAL WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO SELECTIVELY REMOVE STRAIGHT CHAIN HYDROCARBONS FROM SAID ISOMATE THEREBY YIELDING A RESULTING TREATED ISOMATE HAVING A REDUCED AMOUNT OF STRAIGHT CHAIN HYDROCARBONS AND BLENDING THE RESULTING TREATED ISOMATE, SAID TREATED LIGHT NAPHTHA-REFORMATE EFFLUENT AND SAID HEAVY REFORMATE TO PRODUCE A PETROLEUM PRODUCT SUITABLE AS A MOTOR FUEL

Claim 2

A METHOD OF TREATING A PETROLEUM FRACTION CONTAINING STRAIGHT CHAIN HYDROCARBONS AND NON-STRAIGHT CHAIN HYDROBONS WHICH COMPRISES FRACTIONATING SAID FRACTION TO PRODUCE A LIGHT NAPHTHA HAVING AN END LOILING POINT IN THE RANGE 150-250* F. AND A HEAVY NAPHA HAVING AN END BOILING POINT IN THE RANGE 350-450* F., SUBJECTING SAID HEAVY NAPHTHA TO CATALYTIC REFORMING WITH THE RESULTING PRODUCTION OF HYDROGEN, C5 C4 AND LIGHTER HYDROCARBONS AND A RELATIVELY WIDE BOILING REFORMATE, SEPARATING SAID HYDROGEN AND SAID C4 HYDROCARBONS FROM SAID REFORMATE, FRACTIONATING THE REMAINING REFORMATE INTO A LIGHT REFORMATE HAVING AN END BOILING POINT IN THE RANGE 150-250* F. AND A HEAVY REFORMATE HAVING AN END POINT IN THE RANGE 350-450* F., INTRODUCING SAID LIGHT NAPHTHA AND SAID LIGHT REFORMATE INTO CONTACT WITH A SELECTIVE SOLID ADSORBENT WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO REMOVE STRAIGHT CHAIN HYDROCARBONS THEREFROM TO YIELD A RESULTING TREATED LIGHT NAPHTHA-REFORMATE EFFLUENT, HAVING A REDUCED STRAIGHT CHAIN HYDROCARBON CONTENT, DESORBING THE ADSORBED STRAIGHT CHAIN HYDROCARBONS FROM SAID ADSORBENT BY CONTACTING SAID ADSORBENT AT AN ELEVATED TEMPERATURE WITH SAID SEPARATED C4 HYDROCABON SEPARATING FROM THE RESULTING DESORPTION EFFLUENT THE C4 HYDROCARBONS AND THE RESULTING DESORBED STRAIGHT CHAIN HYDROCARBONS, INTRODUCING THE RESULTING DESORBED STRAIGHT CHAIN HYDROCARBONS INTO CONTACT WITH AN ISOMERIZATION CATALYST TO ISOMERIZE SAID STRAIGHT CHAIN HYDROCARBONS, RECOVERING FROM THE ISOMERIZATION REACTION AN ISOMATE, INTRIDUCING SAID ISOMATE INTO CONTACT WITH A SELECTIVE SOLID ABSORBENT MATERIAL WHICH SELECTIVELY ADSORBS STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO SELECTIVELY REMOVE STRAIGHT CHAIN HYDROCARBONS FROM SAID ISOMATE THEREBY YIELDING A RESULTING TREATED ISOMATE HAVING A REDUCED AMOUNT OF STRAIGHT CHAIN HYDROCARBONS AND BLENDING THE RESULTING TREATED ISOMATE, SAID TREATED LIGHT NAPHTHA-REFORMATE EFFLUENT AND SAID HEAVY REFORMATE TO PRODUCE A PETROLEUM PRODUCT SUITABLE AS A MOTOR FUEL