Convert hot wall FCCU lines to cold wall design

Journal Article · Wed Jan 01 04:00:00 EST 1986 · Hydrocarbon Process.; (United States)

OSTI ID:5784142

Antalffy, L

Many refiners are seeing increasing financial advantages in raising the operating temperatures of their fluid catalytic cracking units (FCCU). Increasing demands for higher octane gasolines, the need to use heavier feedstocks and the availability of new, more tolerant and active catalysts for increased yields are forcing refiners to look at operating their units at higher temperatures. High temperature operation, however, has been a major cause of failure of FCCU equipment resulting in shorter run lengths, higher maintenance costs and increased downtime. Many operating FCC units were designed and built years ago when design temperatures were lower than those required for today's optimum operation. In a significant number of these units the catalyst transfer lines were designed for hot wall operation where the line wall temperatures are close to the fluid operating temperature. Hot wall transfer lines traditionally have required significant maintenance and may be one of the bottlenecks in upgrading some FCC units to higher operating temperatures. High maintenance of hot wall transfer lines is one of the major reasons owners are changing to cold wall designs.

• Research Organization: Fluor Eng. Inc., Houston, TX
• OSTI ID: 5784142
• Journal Information: Hydrocarbon Process.; (United States), Journal Name: Hydrocarbon Process.; (United States) Vol. 65:1; ISSN HYPRA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
ANTIKNOCK RATINGS
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
CONTROL
CRACKING
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
FAILURES
FOSSIL FUELS
FUELS
GASOLINE
HEAT TRANSFER
HYDROCARBONS
INDUSTRIAL PLANTS
LIQUID FUELS
MAINTENANCE
OCTANE
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
PETROLEUM REFINERIES
PIPES
PYROLYSIS
RETROFITTING
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
VISCOSITY
YIELDS