C F Braun, Inc.

Clive R Good

Bernard J Grotz

A combined heat exchanger particularly suited for ammonia converter reactor effluent is described. The combined exchanger includes a first exchanger and a high temperature heat sink, such as a steam superheater, within a single exchanger shell. In a preferred embodiment, gas leaving the ammonia converter is conveyed into a single pass tube bundle which comprises the feed-effluent exchanger section and then passes through a tubesheet which separates the feed effluent exchanger section from the steam superheater section, passing over a U-tube bundle which comprises the steam superheater section in the other part of the shell. Means are provided for protecting the shell in the steam superheater section adjacent the tubesheet.

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Whittier, CA, United States of America

Clive R Good