Commercial operations of a DEMET unit

Conference · Fri Jan 01 04:00:00 EST 1993

OSTI ID:7275955

Elvin, F J; Pavel, S K ^[1]

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1. Coastal Catalyst Technology, Inc., Houston, TX (United States)

Coastal Refining and Marketing is operating a 20 TPD DEMET unit that is directly attached to its 20,000 BPD FCCU. The activity and selectivity of the equilibrium catalyst in the FCCU were maintained at lower fresh catalyst make-up rates by recycling a 20 tons per day (TPD) slip-stream of catalyst from the FCCU regenerator through the DEMET unit and back to the regenerator. The fresh catalyst make-up to the FCCU was reduced from 4 TPD to 0.5 TPD and spent catalyst disposal was decreased by 3 TPD. ECAT additions remained at 2 TPD. The DEMET unit reduces the rate of accumulation of metals on the equilibrium catalyst so that less fresh catalyst is required to maintain activity and selectivity. Fresh catalyst make-up is always required to compensate for hydrothermal deactivation and attrition losses. The amount of fresh catalyst required depends on the FCCU design, FCCU operating conditions and the catalyst used. Any additional catalyst requirements resulting from metals poisons in the feed can be eliminated by using DEMET.

• Research Organization: Coastal Catalyst Technology, Inc., Houston, TX (United States)
• OSTI ID: 7275955
• Report Number(s): AM-93-54
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
CAPITALIZED COST
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COST
CRACKING
DATA
DECOMPOSITION
DEMETALLIZATION
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
INFORMATION
NUMERICAL DATA
OPERATING COST
PERFORMANCE
PETROLEUM
PETROLEUM REFINERIES
PYROLYSIS
RECYCLING
REGENERATION
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
WASTE PROCESSING PLANTS
YIELDS