Process for manufacturing 104-106 r.o.n. leaded gasoline

Claim 1

A METHOD OF PRODUCING GASOLINE HAVING A LEADED OCTANE NUMBER OF AT LEAST 104-106 (RESEARCH +3 CC. TEL) WHICH COMPRISES FRACTIONATING A C4 AND HEAVIER FRACTION OR NAPHTHA HAVING AN END BOILING POINT NOT GREATER THAN 450*F. TO PROVIDE A FIRST FRACTION COMPRISING C4 AND LIGHTER HYDROCARBONS, A SECOND FRACTION COMPRISING HYDROCARBONS, AND A THIRD FRACTION COMPRISING HYDROCARBONS HEAVIER THAN C6 HYDROCARBONS, REFORMING THE AFORESAID THIRD FRACTION IN THE PRESENCE OF HYDROGEN AND AROMATIZING REFORMING CATALYST UNDER REFORMING CONDITIONS OF TEMPERATURE, PRESSURE, AND SPACE VELOCITY TO CONVERT SUBSTANTIALLY ALL OF THE HYDROCARBONS IN THE AFORESAID THIRD FRACTION TO AROMATIC HYDROCARBONS AND C6 AND LIGHTER PARAFFINIC HYDROCARBONS TO OBTAIN A REFORMER EFFLUENT COMPRISING HYDROGEN AND C1 AND HEAVER HYDROCARBONS, SEPARATING THE AFORESAID REFORMER EFFLUENT INTO RECYCLE GAS COMPRISING HYDROGEN AND C1 AND C2 HYDROCARBONS, A FOURTH FRACTION COMPRISING C3 AND LIGHTER HYDROCARBONS, A FIFTH FRACTION COMPRISING C4 AND LIGHTER HYDROCARBONS, A SIXTH FRACTION COMPRISING C5 AND C6 HYDROCARBONS, A SEVENTH FRACTION COMPRISING SUBSTANTIALLY PURE AROMATIC HYDROCARBONS CONTAINING NOT MORE THAN 10 PERCENT BY VOLUME OF PARAFFINS AND HAVING AN END BOILING POINT OF ABOUT 380* TO 430*F., AND AN EIGHTH FRACTION COMPRISING HYDROCARBONS BOILING ABOVE ABOUT 380* TO 430*F., ISOMERIZING ALL OF THE AFORESAID C5 AND C6 FRACTIONS COMPRISING THE AFORESAID SECOND FRACTION AND THE AFORESAID SIXTH FRACTION TO PRODUCE AN ULTIMATE ISOMERIZED PRODUCT (P) CONTAINING LESS THAN 8 PERCENT BY VOLUME OF NORMAL PARAFFINS, FRACTIONATING THE AFORESAID FIRST FRACTION AND THE FORESAID FIFTH FRACTION TO OBTAIN A NINTH FRACTION COMPRISING N- AND ISO-C4 HYDROCARBONS, ALKALATING THE ISO-C4 HYDROCARBONS IN THE AFORESAID NINTH FRACTION WITH OLEFINS TO OBTAIN IN ALKYLATE, MIXING SAID ALKYLATE, THE AFORESAID ULTIMATE ISOMERIZED PRODUCT CONTAINING LESS THAN 8 PERCENT BY VOLUME OF NORMAL PARAFFINS, THE FORESAID SEVENTH FRACTION COMPRISING SUBSTANTIALLY PURE AROMATICS CONTAINING NOT MORE THAN 10 PERCENT BY VOLUME OF PARAFFINS, AND NORMAL C4 HYDROCARBONS OBTAINED FROM THE AFORESAID ALKYLATION OF ISO-C4 HYDROCARBONS IN AMOUNT TO PROVIDE THE REQUIRED VOLATILITY AND VAPOR PRESSURE TO PRODUCE A GASOLINE BLEND HAVING A LEADED OCTANE NUMBER OF AT LEAST 104 (RESEARCH +3 CC. TEL).

Claim 2

A METHOD OF PRODUCING GASOLINE HAVING A LEADED OCTANE NUMBER OF AT LEAST 104-106 (RESEARCH +3 CC. TEL) WHICH COMPRISES FRACTIONATING A C4 AND HEAVIER FRACTION OR NAPHTHA HAVING AN END BOILING POINT NOT GREATER THAN 450*F. TO PROVIDE A FIRST FRACTION COMPRISING C4 AND LIGHTER HYDROCARBONS, A SECOND FRACTION COMPRISING HYDROCARBONS, AND A THIRD FRACTION COMPRISING HYDROCARBONS HEAVIER THAN C6 HYDROCARBONS, REFORMING THE AFORESAID THIRD FRACTION IN THE PRESENCE OF HYDROGEN AND AROMATIZING REFORMING CATALYST UNDER REFORMING CONDITIONS OF TEMPERATURE, PRESSURE, AND SPACE VELOCITY TO CONVERT SUBSTANTIALLY ALL OF THE HYDROCARBONS IN THE AFORESAID THIRD FRACTION TO AROMATIC HYDROCARBONS AND C6 AND LIGHTER PARAFFINIC HYDROCARBONS TO OBTAIN A REFORMER EFFLUENT COMPRISING HYDROGEN AND C1 AND HEAVER HYDROCARBONS, SEPARATING THE AFORESAID REFORMER EFFLUENT INTO RECYCLE GAS COMPRISING HYDROGEN AND C1 AND C2 HYDROCARBONS, A FOURTH FRACTION COMPRISING C3 AND LIGHTER HYDROCARBONS, A FIFTH FRACTION COMPRISING C4 AND LIGHTER HYDROCARBONS, A SIXTH FRACTION COMPRISING C5 AND C6 HYDROCARBONS, A SEVENTH FRACTION COMPRISING SUBSTANTIALLY PURE AROMATIC HYDROCARBONS CONTAINING NOT MORE THAN 10 PERCENT BY VOLUME OF PARAFFINS AND HAVING AN END BOILING POINT OF ABOUT 380* TO 430*F., AND AN EIGHTH FRACTION COMPRISING HYDROCARBONS BOILING ABOVE ABOUT 380* TO 430*F., ISOMERIZING ALL OF THE AFORESAID C5 AND C6 FRACTIONS COMPRISING THE AFORESAID SECOND FRACTION AND THE AFORESAID SIXTH FRACTION TO PRODUCE AN ULTIMATE ISOMERIZED PRODUCT (P) CONTAINING LESS THAN 8 PERCENT BY VOLUME OF NORMAL PARAFFINS, FRACTIONATING THE AFORESAID FIRST FRACTION AND THE FORESAID FIFTH FRACTION TO OBTAIN A NINTH FRACTION COMPRISING N- AND ISO-C4 HYDROCARBONS, ALKALATING THE ISO-C4 HYDROCARBONS IN THE AFORESAID NINTH FRACTION WITH OLEFINS TO OBTAIN IN ALKYLATE, MIXING SAID ALKYLATE, THE AFORESAID ULTIMATE ISOMERIZED PRODUCT CONTAINING LESS THAN 8 PERCENT BY VOLUME OF NORMAL PARAFFINS, THE FORESAID SEVENTH FRACTION COMPRISING SUBSTANTIALLY PURE AROMATICS CONTAINING NOT MORE THAN 10 PERCENT BY VOLUME OF PARAFFINS, AND NORMAL C4 HYDROCARBONS OBTAINED FROM THE AFORESAID ALKYLATION OF ISO-C4 HYDROCARBONS IN AMOUNT TO PROVIDE THE REQUIRED VOLATILITY AND VAPOR PRESSURE TO PRODUCE A GASOLINE BLEND HAVING A LEADED OCTANE NUMBER OF AT LEAST 104 (RESEARCH +3 CC. TEL).