Process for steam heat recovery from multiple heat streams

Details Process for steam heat recovery from multiple heat streams Process for steam heat recovery from multiple heat streams

2007-05-23

2010-06-08

Wilson, Gregory A (Department: 3749)

Liquid heaters and vaporizers

Industrial

Waste heat

C122S492000

Reexamination Certificate

active

07730854

ABSTRACT:
Disclosed is an apparatus and process for recovering heat from multiple hot process streams without multiplying instrumentation. Each hot process stream is indirectly heat exchanged with a water circuit which leaves and feeds a steam drum. Heat is added to the steam drum through the addition of water heated outside of the steam drum. The heated liquid and vapor water is heated in heat exchangers decoupled from the steam drum. The water circuits are arranged in parallel with each other and feed a single steam drum to provide a steam product of a desired pressure for which only one set of instrumentation is needed.

REFERENCES:
patent: 4257579 (1981-03-01), Bruhn et al.
patent: 4340207 (1982-07-01), Bruhn et al.
patent: 4484531 (1984-11-01), Firey
patent: 6434925 (2002-08-01), Hannemann et al.
patent: 6966190 (2005-11-01), Wylie
patent: 2008/0038185 (2008-02-01), Freitag et al.

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