Coke inhibiting process using glass bead treating
AssigneeUop LLC
InventorsMichael B. Russ, Chi-Chu D. Low, Jeffry T. Donner
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Abstract
Hydrocarbon conversion processes having a susceptibility to coke formation on the internal surfaces of processing equipment are improved by inhibiting the formation of coke with the use of a glass bead treatment for the metal surfaces. After treating with ordinary glass bead cleaning methods, metal surfaces are found to inhibit coke formation. The glass bead treatment is easily performed and, therefore, offers advantages over other chemical treatments for the deposition of silica on reactor internals.
Claims8
A method of forming a coke inhibiting coating on the metal surfaces of equipment susceptible to coke formation, comprising treating said metal surfaces by impact with glass bead materials comprising amorphous silicate oxides at atmospheric conditions for a sufficient time to produce a coke inhibiting layer on said surfaces having a thickness of at least 20 .ANG..
An improved method for inhibiting coke formation on the metal surfaces of equipment used in a process for the conversion of hydrocarbons that passes a feedstream containing hydrocarbons to a hydrocarbon conversion zone, contacts said feedstream at hydrocarbon conversion conditions in said hydrocarbon conversion zone, and recovers an effluent stream comprising hydrocarbons from said hydrocarbon conversion zone and exposes the metal surfaces of the equipment used to pass said feedstream, contact said feedstream or recover said effluent to conditions suitable for the formation of coke on metal surfaces;
- wherein the improvement comprises treating at least a portion of said metal surfaces by impact with glass bead materials comprising amorphous silicate oxides for a sufficient time to produce a coke inhibiting layer having a thickness of at least 20 .ANG. on said metal surfaces and contacting at least one of said feedstream or said effluent streams with said metal surfaces having said coke inhibiting layer.
Dependencies are inferred from the claim text.