Method and apparatus to prevent metal dusting

An apparatus and a method for inhibiting metal dusting corrosion of a tubesheet inside a shell-and-tube heat exchanger (20) having at least one exit nozzle (14) for transmitting at least one process fluid from the shell-and-tube heat exchanger (20) include and use: an isolation baffle (38) disposed...

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Bibliographic Details
Main Author DIMARTINO, STEPHEN PAUL, SR
Format Patent
LanguageEnglish
French
German
Published 26.03.2008
Subjects
BLASTING
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
HEAT EXCHANGE IN GENERAL
HEATING
LIGHTING
MECHANICAL ENGINEERING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
WEAPONS
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Summary:An apparatus and a method for inhibiting metal dusting corrosion of a tubesheet inside a shell-and-tube heat exchanger (20) having at least one exit nozzle (14) for transmitting at least one process fluid from the shell-and-tube heat exchanger (20) include and use: an isolation baffle (38) disposed inside the shell-and-tube heat exchanger (20) at a location between a first exit nozzle (14) and the tubesheet (18), whereby an isolated space (16) exists between the tubesheet (18) and the isolation baffle (38); and a means (22) for purging the isolated space (16) with a purging fluid.
Bibliography:Application Number: EP20040008000