Single and dual-stage hydrotreating can improve diesel cetane

Journal Article · Mon Aug 17 04:00:00 EDT 1992 · Oil and Gas Journal; (United States)

OSTI ID:7032948

Pending diesel aromatics specifications can be achieved by one of two methods. This paper discusses use of these methods---single and dual-stage hydrotreating---at American Chemical Society's national meeting, April 5-10, in San Francisco. In most existing diesel hydrotreaters, where process conditions have been selected to achieve hydrodesulfurization (HDS) with minimum hydrogen consumption, CI improvement is limited. A refiner requiring additional CI improvement has two alternatives for significantly increasing the cetane index of his diesel fuel: Single-stage, severe hydrotreatment using a special base-metal catalyst that simultaneously removes sulfur and nitrogen. Dual-stage hydrotreatment using a noble metal catalyst in the second stage after removing sulfur and nitrogen in the first stage. The choice of options, depends on many factors, including the sulfur and nitrogen content of the feed and the ease with which these can be removed at normal diesel hydrotreating conditions.

• OSTI ID: 7032948
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 90:33; ISSN 0030-1388; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
023000 -- Petroleum-- Properties & Composition
29 ENERGY PLANNING, POLICY, AND ECONOMY
294002 -- Energy Planning & Policy-- Petroleum
AIR POLLUTION CONTROL
AROMATICS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CONTROL
CRACKING
DECOMPOSITION
DESULFURIZATION
DIESEL FUELS
ENERGY SOURCES
ENVIRONMENTAL POLICY
FLUE GAS
FOSSIL FUELS
FUELS
GAS OILS
GASEOUS WASTES
GOVERNMENT POLICIES
HYDROCRACKING
INDUSTRIAL PLANTS
LIQUID FUELS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM REFINERIES
POLLUTION CONTROL
PYROLYSIS
SPECIFICATIONS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES