公开(公告)号：US3784463A

公开(公告)日：1974-01-08

申请号：US3784463D

申请日：1970-10-02

Applicant: TEXACO INC

Inventor： REYNOLDS D ,  PRATT R ,  YOUNGBLOOD D ,  BUNN D

IPC: C10G11/18 ,  B01J9/20 ,  C10G37/02

CPC classification number: C10G11/18 ,  Y10S208/02

Abstract: Low octane naphtha and fresh gas oil are catalytically cracked with a zeolite catalytic cracking catalyst in separate elongated reaction zones yielding a naphtha having an increased octane rating. Recovering a naphtha fraction, particularly a heavy naphtha fraction, from the cracked product, and combining it with the fresh naphtha feed, further enhances the octane rating of the naphtha product. A cycle gas oil may be recovered from the reactor effluent and combined with the fresh naphtha feed or introduced into a separate (a third) elongated reaction zone to effect maximum recovery of naphtha and lighter stocks having improved product quality. Optionally, any of the feedstocks may be subjected to further cracking in a dense bed of the zeolite catalyst.

Abstract translation: 低辛烷值的石脑油和新鲜瓦斯油在分离的细长反应区域中用沸石催化裂化催化剂进行催化裂化，产生具有提高的辛烷值的石脑油。 从裂化产物中回收石脑油馏分，特别是重质石脑油馏分，并将其与新鲜石脑油进料相结合，进一步提高了石脑油产品的辛烷值。 循环瓦斯油可以从反应器流出物中回收并与新鲜的石脑油进料混合或引入到单独的（第三个）细长的反应区中，从而最大限度地回收具有改进的产品质量的石脑油和更轻的原料。 任选地，任何原料可能在沸石催化剂的致密床中进一步裂化。

公开(公告)号：US3714024A

公开(公告)日：1973-01-30

申请号：US3714024D

申请日：1969-12-31

Applicant: TEXACO INC

Inventor： YOUNGBLOOD D ,  REYNOLDS D

IPC: C10G11/18 ,  C10G37/02

CPC classification number: C10G11/18

Abstract: IN A FLUID CATALYTIC CRACKING UNIT EMPLOYING A MULTIPLICITY OF ELONGATED REACTION ZONES, SIGNIFICANT IMPROVEMENTS ARE OBTAINED BY INTRODUCING FRESH FEED TO EACH OF THE ELONGATED REACTION ZONE AND OPERATING AT LEAST ONE AT A HIGHER TEMPERATURE THEN AT LEAST ONE OTHER WHILE MAINTAINING THE CONVERSATION IN THE HIGHER TEMPERATURE ZONE EQUIVALENT TO OR LOWER THAN THE CONVERSATION IN THE LOWER TEMPERATURE REACTION ZONE. OPTIONALLY, THE VAPOROUS EFFLUENT FROM EITHER OR BOTH REACTION ZONE MAY BE SUBJECTED TO FURTHER CRACKING IN THE DENSE PHASE OF CATALYST IN THE REACTION VESSEL. HIGHER YIELDS OF HIGHER OCTANE GASOLINE ARE OBTAINED WHERE THE UNIT IS OPERATED IN THE DISCLOSED MANNER.

公开(公告)号：US3761394A

公开(公告)日：1973-09-25

申请号：US3761394D

申请日：1969-12-31

Applicant: TEXACO INC

Inventor： REYNOLDS D ,  YOUNGBLOOD D ,  PARKER L ,  COLVERT J

IPC: B01J29/08 ,  C10G11/05 ,  C10G11/04

CPC classification number: B01J29/08 ,  C10G11/05

Abstract: LOW OCTANE NAPHTHAS ARE CATALYTICALLY CRACKED WITH A ZEOLITIC CATALYTIC CRACKING CATALYST CONTAINING ZEOLITE X OR ZEOLITE Y YIELDING PRODUCTS BOILING BELOW THE INITIAL BOILING POINT OF THE NAPHTHA AND A NAPHTHA HAVING AN INCREASED OCTANE RATING.