MY115144A - Pretreatment method for increasing conversion of reforming catalyst - Google Patents

Pretreatment method for increasing conversion of reforming catalyst

Info

Publication number
MY115144A
MY115144A MYPI9400232A MY115144A MY 115144 A MY115144 A MY 115144A MY PI9400232 A MYPI9400232 A MY PI9400232A MY 115144 A MY115144 A MY 115144A
Authority
MY
Malaysia
Prior art keywords
catalyst
pretreated
pretreatment
catalysts
temperature
Prior art date
Application number
Inventor
Bernard F Mulaskey
Robert L Hise
Steven E Trumbull
William J Cannella
Robert A Innes
Original Assignee
Chevron Res & Tech
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/151,814 external-priority patent/US5382353A/en
Application filed by Chevron Res & Tech filed Critical Chevron Res & Tech
Publication of MY115144A publication Critical patent/MY115144A/en

Links

Abstract

A PRETREATMENT PROCESS FOR INCREASING CONVERSION AND REDUCING THE FOULING RATE OF REFORMING CATALYSTS WHEREIN THE CATALYST IS PRETREATED AT A TEMPERATURE FROM 551.7°C TO 690.6°C (1025°F TO 1275°F) IN A REDUCING ATMOSPHERE PRIOR TO CONTACTING THE CATALYST WITH A HYDROCARBON FEED IN THE PRESENCE OF HYDROGEN. MORE PREFERABLY, THE CATALYST IS REDUCED WITH DRY HYDROGEN VIA TEMPERATURE-PROGRAMMED STEPS, WITH THE TREATMENT OF THE PRESENT INVENTION OCCURRING AT THE FINAL TEMPERATURE OF FROM 551.7°C TO 690.6°C (1025°F TO 1275°F). AMONG OTHER FACTORS, IT HAS BEEN FOUND THAT LARGE-PORE ZEOLITIC CATALYSTS WHICH HAVE BEEN PRETREATED IN A EDUCING GAS IN THE HIGH TEMPERATURE RANGE OF FROM ABOUT 551.7°C TO 690.6°C (1025°F TO 1275°F) HAVE A LOWER FOULING RATE AND IMPROVED ACTIVITY, AND HAVE A LONGER RUN LIFE. IN PARTICULAR, THIS CATALYST EXHIBITS A LONGER RUN LIFE WITH HEAVIER FEEDSTOCKS THAN WITH SIMILAR CATALYSTS USING OTHER PRETREATMENT PROCESSES. FOR EXAMPLE, IF A L ZEOLITE CATALYST IS PRETREATED BY CONVENTIONAL METHODS, RUN LENGTHS WITH FEEDS CONTAINING C9+ HYDROCARBONS ARE GENERALLY SHORT. THE PRETREATMENT PROCEDURE OF THIS INVENTION, HOWEVER, MAKES IT PRACTICAL TO PROCESS FEEDSTOCKS CONTAINING AS MUCH AS 5-15 WT 9+ HYDROCARBONS.
MYPI9400232 1993-11-15 1994-01-28 Pretreatment method for increasing conversion of reforming catalyst MY115144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/151,814 US5382353A (en) 1992-11-16 1993-11-15 Pretreatment method for increasing conversion of reforming catalyst

Publications (1)

Publication Number Publication Date
MY115144A true MY115144A (en) 2003-04-30

Family

ID=22540348

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI9400232 MY115144A (en) 1993-11-15 1994-01-28 Pretreatment method for increasing conversion of reforming catalyst

Country Status (2)

Country Link
CN (1) CN1041997C (en)
MY (1) MY115144A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102600912B (en) * 2012-02-22 2014-07-16 同济大学 Pretreatment method for improving performance of methane and carbon dioxide dry reforming catalyst
CN104549558B (en) * 2013-10-24 2016-08-24 中国石油化工股份有限公司 A kind of method of reducing of semi regeneration reforming catalyst

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517306A (en) * 1982-02-01 1985-05-14 Chevron Research Company Composition and a method for its use in dehydrocyclization of alkanes
US4627912A (en) * 1983-06-30 1986-12-09 Chevron Research Company Reforming process having a high selectivity and activity for dehydrocyclization, isomerization, and dehydroisomerization
US4539305A (en) * 1984-03-08 1985-09-03 Chevron Research Company Pretreatment method for enhancing the selectivity and increasing the stability of a reforming catalyst

Also Published As

Publication number Publication date
CN1041997C (en) 1999-02-10
CN1104933A (en) 1995-07-12

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