G - Physics – 05 – B
Patent
G - Physics
05
B
196/1, 341/21
G05B 15/02 (2006.01) B01J 8/00 (2006.01) C01B 3/38 (2006.01) C01C 1/04 (2006.01) F23N 5/02 (2006.01)
Patent
CA 1123935
Abstract of the Disclosure A method and apparatus is provided for controlling the operation of a reforming furnace used to decompose at least a portion of a feed stream. A byproduct fuel from subsequent process steps, which is a result of decomposi- tion of the feed in the reforming furnace, is used as one fuel source to fire the reforming furnace. A supplemental fuel such as natural gas is used as a supplemental fuel source to fire the furnace. The control system provides a prediction of the heat required to decompose the feed in the furnace. The amount of heat which can be supplied by the byproduct fuel stream is then determined. This amount of heat is subtracted from the total predicted heat required and sufficient supplemental fuel is supplied to make up the differ- ence between the predicted required heat and the heat which can be supplied by the byproduct fuel stream. The control system also monitors the temperature of the effluent flowing from the reforming furnace. A comparison of the measured temperature with the required temperature provides a basis for correcting any errors in the predicted heat requirement. In this manner, use of the byproduct fuel stream is maximized while still maintaining the effluent from the reforming furnace at a desired temperature.
327642
Ball Donald H.
Voelkers James D.
Osler Hoskin & Harcourt Llp
Phillips Petroleum Company
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