Treating aromatic hydrocarbons to remove unsaturates on A-4M adsorbent

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

OSTI ID:6727401

Kuvaeva, M M; Alekseeva, R V; Kalinina, L I

This article reports on studies performed in a laboratory pilot unit to determine the best operating conditions for the A-4M adsorbent. The contents of unsaturated hydrocarbons in the feed and in the treated product were determined on the basis of the bromine number. The adsorbent efficiency was rated according to the residual content of unsaturated hydrocarbons and the quantity of treated feed per unit weight of adsorbent. The principal reaction in treating aromatic hydrocarbons to remove unsaturates on various natural adsorbents and also on A-4M is polymerization of the unsaturated hydrocarbons. In treating xylene cuts with natural adsorbent, the removal of unsaturated hydrocarbons is accompanied by disproportionation of the xylene. The degree of disproportionation with A-4M adsorbent is quite low. It is determined that treating aromatic hydrocarbons to remove unsaturates on A-4M adsorbent is best performed in the liquid phase without any preliminary dehydration of the adsorbent, at a 200-230/sup 0/C treating temperature and a 1.7-2.5 MPa gauge pressure, with a feedstock space velocity 0.5-1.2 h/sup -1/.

• Research Organization: Krasnodar Branch, Sci-Industrial Assoc., ''Lenneftekhim''
• OSTI ID: 6727401
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Journal Name: Chem. Technol. Fuels Oils (Engl. Transl.); (United States) Vol. 19:6; ISSN CTFOA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ADSORPTION
ALKYLATED AROMATICS
AROMATICS
BROMINE NUMBER
CHEMICAL FEEDSTOCKS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DEHYDRATION
EFFICIENCY
FLUIDS
HIGH TEMPERATURE
HYDROCARBONS
KINETICS
LIQUIDS
MEDIUM PRESSURE
ORGANIC COMPOUNDS
OXIDATION
POLYMERIZATION
QUANTITY RATIO
REACTION KINETICS
REDUCTION
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
VELOCITY
XYLENES