Patent GB-830806-A (GB)
Title: Process for the production í¡í¡ octane gasolines
IPC: C10G47/00
Filed: 1957-06-20
Abstract: <PICT:0830806/III/1> The octane rating and volatility characteristics of a petroleum distillate are improved by contacting it in an isomerization-cracking zone with at least 1500 S.C.F. of H2 per barrel in the presence of a catalyst comprising a hydrogenating dehydrogenating component deposited on an active cracking catalyst support at 700-900 DEG  F. at a pressure above 600 lbs. per sq. inch gauge, and a space rate in the range of 0.1 to 15 v/v/hour, separating a fraction boiling between 165 DEG  and 440 DEG  F. extracting the non-aromatic portion of this fraction and reforming this nonaromatic portion.  The petroleum distillate may be a petroleum naphtha of straight run, catalytic or thermal cracked origin boiling between 175 DEG  and 500 DEG  F., a cycle oil boiling between 380 DEG  and 750 DEG  F. or a gas oil boiling between 400 DEG and 750 DEG  F.  The hydrogenating dehydrogenation component of the catalyst may be a metal, oxide or sulphide of Groups V-VIII, especially those of molybdenum, tungsten, vanadium, chromium, iron, nickel or cobalt, and the cracking component may be silica-alumina, silica-magnesia, or silica-alumina-zirconia.  In a typical embodiment a light catalytic cycle oil was treated in an isomerization cracking zone 10 using as catalyst molybdenum oxide (1% Mo) or a mixture of 87% silica and 13% alumina at 800 DEG  F., 1200 p.s.i.g. and a LHSV of 1.  The product passed through a line 13 to a high pressure gas-liquid separator 14 where hydrogen is removed through line 15, and then to a low pressure gas-liquid separator 19 from which the liquid fraction passes to a column 21. Light gasoline passes off through a line 22 while an intermediate fraction boiling between 180 DEG  and 380 DEG  F. passes into a separation zone 27 where it is freed from aromatic components by a phenol extraction and the aromatic components removed by way of line 28. The nonaromatic portion from separation zone 27 is passed through line 29 to the catalytic reforming zone 30 and treated at 900 DEG  F., at a pressure of 500 p.s.i.g.ALSO:<PICT:0830806/IV (b)/1> The octane rating and volatility characteristics of a petroleum distillate are improved by contacting it in an isomerization-cracking zone with at least 1500 S.C.F. of H2 per barrel in the presence of a catalyst comprising a hydrogenating - dehydrogenating component deposited on an active cracking catalyst support at 700-900 DEG  F. at a pressure above 600 lbs. per sq. inch gauge, and a space rate in the range of 0.1 to 15 v./v./hour, separating a fraction boiling between 165 DEG  and 440 DEG  F., extracting the non-aromatic portion of this fraction and reforming this non-aromatic portion.  The petroleum distillate may be a petroleum naphtha of straight run, catalytic or thermal cracked origin, boiling between 175 DEG  and 500 DEG  F. or a gas oil boiling between 380 DEG  and 750 DEG  F., or a cycle oil boiling between 400 DEG  and 750 DEG  F.  The hydrogenating-dehydrogenation components of the catalyst may be a metal, oxide or sulphide of Group V-VIII, especially those of molybdenum, tungsten, vanadium, chromium, iron, nickel or cobalt, and the cracking component may be silica - alumina, silica - magnesia, or silicaalumina-zirconia.  In a typical embodiment a light catalytic cycle oil was treated in an isomerization cracking zone 10 using as catalyst molybdenum oxide (1% Mo) or a mixture of 87% silica and 13% alumina at 800 DEG  F., 1200 p.s.i.g., and a L.H.S.V. of 1.  The product passed through a line 13 to a high-pressure gas-liquid separator 14 where hydrogen is removed through line 15, and then to a low-pressure gasliquid separator 19 from which the liquid fraction passes to a column 21.  Light gasoline passes off through a line 22 while an intermediate fraction boiling between 180 DEG  and 380 DEG  F. passes into a separation zone 27 where it is freed from aromatic components by a phenol extraction and the aromatic components removed by way of line 28.  The non-aromatic portion from separation zone 27 is passed through line 29 to the catalytic reforming zone 30 and treated at 900 DEG  F., at a pressure of 500 p.s.i.g.