Catalytic Technology of Ethylene Alkylation to Ethylbenzene

Catalytic Technology of Ethylene Alkylation to Ethylbenzene

Technical characteristics and application scope

Ethylene and petroleum benzene use gas-phase alkylation technology to produce ethylbenzene with high selectivity. The high-activity molecular sieve material developed by patented technology has high ethylene conversion rate, good ethylbenzene selectivity and low product xylene content. At present, the technology has been fully developed in the laboratory and has entered the stage of industrial promotion.

Catalyst physical index

Appearance white strip

Granularity ф3.0±0.5

Bulk density/Kg·L-1 0.50~0.65

Abrasion rate/% ≤3.0

Normal operating conditions and performance indicators

1. Conditions of use

Pressure/MPa 0.7~0.9

Temperature/℃ 330~420

Ethylene mass space velocity/h-1 0.2~0.5

Benzene/ethylene (mol/mol) 5.0~7.0

2. Performance indicators

Ethylene conversion rate/% ≥99.5

Ethylbenzene selectivity (ethylbenzene+diethylbenzene)/% ≥95.0

Regeneration cycle/month ≥12