Process for the separation of mixtures of aromatic hydrocarbons

Details Process for the separation of mixtures of aromatic hydrocarbons Process for the separation of mixtures of aromatic hydrocarbons

1983-05-03

1985-09-17

Gantz, D. E.

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

By contact with solid sorbent

208310Z, C10G 2503, C07C 712

Patent

active

045422540

ABSTRACT:
There is provided a process for the separation of aromatic hydrocarbons mixtures into single components, in which the mixtures in vapor phase pass onto an adsorption bed formed by a potassium-exchanged Y zeolite, which is preventively saturated with desorbent vapors. According to the invention the desorbent used is isopropylbenzene in vapor phase. This facilitates the quick separation of the pure components, with the exception of the presence of desorbent. The process according to this invention is quicker in comparison to traditional ones. It requires the use of lower charges of desorbent and allows the separation of single pure components of the mixtures. It especially improves the paraxylene separation in higher concentrations with respect to the desorbent.

REFERENCES:
patent: 3686342 (1972-08-01), Neuzil
patent: 3734974 (1973-05-01), Neuzil
patent: 3855333 (1974-12-01), Neuzil
patent: 3943182 (1976-03-01), Neuzil et al.
patent: 4079094 (1978-03-01), Rosback et al.
patent: 4368347 (1983-01-01), Carra et al.

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