Organophosphorous antifoulants in hydrodesulfurization

Details Organophosphorous antifoulants in hydrodesulfurization Organophosphorous antifoulants in hydrodesulfurization

1975-11-20

1977-05-17

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

44 72, 44 76, 203 50, 208213, 208216, 252400A, 2606665, C10G 916, C10L 126, C23F 1402, B01D 334

Patent

active

040240487

ABSTRACT:
Phosphate and phosphite mono- and di-esters and thioesters in small amounts function as antifoulant additives in overhead vacuum distilled gas oils employed as feedstocks in hydrodesulfurizing wherein such feedstocks are subjected to elevated temperatures of from about 200.degree. to 700.degree. F and which are prone under such processing to produce material that deposits and accumulates upon the surfaces of hydrodesulfurization catalysts and also equipment, such as heat transfer surfaces and the like. Such additives not only inhibit and suppress fouling but also reduce fouling in previously fouled such systems.

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patent: 3645886 (1972-02-01), Gillespie et al.
patent: 3647677 (1972-03-01), Wolff et al.
patent: 3776835 (1973-12-01), Dvoracek

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