Cracking furnace control

Details Cracking furnace control Cracking furnace control

1987-08-24

1988-05-31

Sneed, Helen M. S.

Mineral oils: apparatus

Vaporizing

Automatic control

422 62, 422110, 422109, 165 34, 364500, C10G 758, C06F 1518

Patent

active

047479124

ABSTRACT:
For parallel heat exchangers, one using a more preferred heat exchange medium as a heat exchange source and another using a less preferred heat exchange medium, maximum use of the more preferred heat exchange medium is used prior to use of the less preferred heat exchange medium in achieving a desired total heat exchange through the parallel heat exchange system. In employing such a heat exchange system in a cracking process it is combined with individual control of flows of feed fluid and diluent fluid to a plurality of individual cracking tubes in a cracking furnace to maintain a desired mass flow of feed fluid and ratio of mass diluent fluid to steam fluid to each such cracking tube.

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