Alternate injection method for cleaning fixed bed reactor catalyst bed in situ with cleaning solvent

Abstract

A method for decontaminating refinery equipment. In one embodiment, the method comprises injecting a chemistry into a feed line of a refinery system unit at a low-pressure region via reciprocating drum pumps, wherein the low-pressure region is upstream of a reactor circuit of the refinery system unit. Further the method comprises allowing the chemistry to flow as a liquid through the feed line of the refinery system unit to be joined by a hydrogen stream that takes up, vaporizes, and carries the chemistry to the reactor circuit to thereby remove contaminants from equipment in the reactor circuit.

Dependencies are inferred from the claim text.