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US 2026/0264070 A1Published application
Methods for Releasing at Least a Portion of a Halide From a Surface
OwnerGabriela D. ALVEZ-MANOLI, Joseph J. BERGMEISTER +2inventors
InventorsGabriela D. ALVEZ-MANOLI, Joseph J. BERGMEISTER, Spencer J. CAREY, Donald A. STERN
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Abstract
Contacting an interior surface, optionally metal, of a petrochemical or refining process vessel with a halide or a halide-containing compound, wherein, as a result of the contracting, at least a portion of the halide is coupled to the interior surface; and releasing at least the portion of the halide coupled to the interior surface via contact thereof with hydrogen.
Claims20
A method, comprising:
- contacting a catalyst with a halide within a vessel having a surface wherein at least a portion of the halide is coupled to the surface;
- and
- regenerating the catalyst with a reducing fluid to release the at least the portion of the halide coupled to the surface.
A method of removing all or a portion of a residual metal halide from a vessel wall surface, comprising:
- contacting the vessel wall surface comprising a first amount of the residual metal halide with a reducing fluid at about 500° F. to about 1,300° F., and at least about 1 hour to form a halide gas, and
- removing at least a portion of a halide from the residual metal halide from the vessel wall surface to provide a second amount of the residual metal halide, wherein the second amount is less than the first amount.
A method, comprising:
- contacting an interior surface, optionally metal, of a reactor vessel with a halide or a halide-containing compound, wherein at least a portion of the halide is coupled to the interior surface;
- and releasing at least the portion of the halide coupled to the interior surface via contact thereof with hydrogen in an amount effective to protect the vessel integrity.
Dependencies are inferred from the claim text.