Eastman Chemical Company

Eastman-kodak Company

Honeywell International Inc.

Gary Scott Whittaker

Daniel Isaiah Saxon

Stacey Elaine Swisher

Woodward Clinton Helton

Sunil K Menon

George Daniel Hadden

Dane Francis Wilson

Russell D Braunling

Steven James Hrivnak

James Wesley Adams

Kevin Gerard Bellamy

Larry C Daniels

A coal gasification feed injector is disclosed having an oxidation-resistant insert which prevents oxidative corrosion of the shield, and the subsequent damage to the underlying face of the feed injector. The life of the feed injector, and thus the length of a single gasification campaign, is thereby extended.

Coal gasification feed injector shield with oxidation-resistant insert

A coal gasification nozzle is disclosed having a barrier, integral with the face of the injector, that fits into a groove of a heat shield attached to the nozzle face. The barrier prevents oxidative corrosion of the shield, and subsequent damage to the underlying face of the feed injector, by preventing diffusion of corrosive species to the threaded ring by which the heat shield is attached to the face of the nozzle. The life of the injector, and thus the length of any single gasification campaign, is thereby extended.

Coal gasification feed injector shield with integral corrosion barrier

A corrosion sensor and method for its use to detect and determine the, type, location, size and growth rate of corrosion of metals and the like in a corrosive environment. The corrosion sensor can distinguish between different types of corrosion such as uniform corrosion, pitting, crevice, and stress corrosion cracking. The sensor detects corrosion conditions of a corrodible metal article in a corrosive environment. It has a metal probe comprised of a metal which is substantially identical to that of the corrodible metal article and a transducer element attached to said probe, which is capable of projecting and receiving ultrasonic or radio frequency signals through the probe. The received signals indicate corrosion of the probe and hence the corrodible metal article.

Method for detecting multiple types of corrosion

A burner nozzle assembly for the production of synthesis gas in a synthesis gas generation chamber has a cooling water jacket face that is protected from hot gas corrosion by an annular shield fabricated from a high melting point material. The heat shield is affixed to the cooling water jacket face by means of a threaded retaining member that engages in one of the surfaces an aligned channel having correspondingly mating threads.

Threaded heat shield for burner nozzle face

A method for protecting a synthesis gas generator burner heat shield includes coating the burner heat shield with an overlay alloy coating composition of the formula MCrAlY wherein M is selected from the group consisting of iron, nickel, and cobalt. In a preferred embodiment, the coating includes from about 20-40 weight % Co, 5-35 weight % Cr, 5-10 weight % Ta, 0.8-10 weight % Al, 0.5-0.8 Y, 1-5 weight % Si and 5-15 weight % Al,O,.

Coal gasification burner shield coating

A water jacket face of a burner nozzle for a synthesis gas generator is protected from hot gas corrosion by an annular heat shield of high temperature material tiles. Angular segments of a tile annulus around a burner nozzle orifice are secured to the water jacket face by furnace melted, high temperature brazed metal. The metal water jacket face along radial joints between adjacent tiles is protected by stepped or scarfed lap joints.

High temperature material face segments for burner nozzle secured by

The operational life of a synthesis gas generation reactor burner nozzle is improved, at least about 14%, by a faired lip around the nozzle discharge orifice projecting about 0.95 cm from the nozzle end face. The lip is faired with a 45.degree. conical angle from the nozzle face. A smooth transition of recirculated gas flow across the nozzle face into the reactive material discharge column is believed to promote an attached static or laminar flowing boundary layer of cooled gas that insulates the nozzle face, to a degree, from the emissive heat of the combustion reaction.

Faired lip protuberance for a burner nozzle

The water jacket face of a burner nozzle for a synthesis gas generator is protected from hot gas corrosion by an annular heat shield of high temperature melting point material. The heat shield element is secured to the water jacket face by means of six, for example, radially aligned bayonet mounts. Along each of the radial mounting lines, a pair of radially aligned posts project from the water jacket face. Blind sockets in the heat shield back side surface are aligned to receive the posts therein. Radial bayonet channels between the heat shield face side and backside surfaces connect the inner outer heat shield perimeters through the posts and post sockets. Bayonet wires through the bayonet channels secure the heat shield position relative to the water jacket face.

Wire lock shield face for burner nozzle

The water jacket face of a burner nozzle for a synthesis gas generator is protected from hot gas corrosion by an annular heat shield of high temperature melting point material. The shield material is formed into two ceramic rings that face or cover the nozzle water jacket face. A circular joint between the outer perimeter of an interior shield annulus is stepped to provide a protective lap with the interior perimeter of an exterior shield annulus. The interior ceramic ring is secured in place around the burner nozzle orifice by external lugs projecting radially from the nozzle extruder lip. A second set of external lugs is provided around the outer perimeter of the water jacket face. Internal sectors within a perimeter cuff bracket secure the outer ceramic ring to the water jacket face.

Breech lock heat shield face for burner nozzle

The water jacket face of a burner nozzle for a synthesis gas generator is protected from hot gas corrosion by an annular heat shield of high temperature material tiles. Six, for example, angular segments of a tile annulus around a burner nozzle orifice are secured to the water jacket face by furnace melted, high temperature brazed metal. The metal water jacket face along radial joints between adjacent tiles is protected by stepped or scarfed lap joints.

The present invention relates to a novel metallurgical coating system which provides corrosion resistance and non-stick properties to metallic components which are subjected to unusually severe operating conditions. The coating system comprises a first layer comprising tantalum which is deposited upon a substrate and a second layer comprising molybdenum disilicide which is deposited upon the first layer.

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Kingsport, TN, United States of America

Gary Scott Whittaker