Temperature control of integrated fractionation and claytreating

Details Temperature control of integrated fractionation and claytreating Temperature control of integrated fractionation and claytreating

1977-01-24

1977-10-11

Gantz, Delbert E.

Distillation: processes, separatory

With measuring, testing or inspecting

Of temperature or pressure

203 23, 203 41, 203DIG18, 208DIG1, 208260, 260674SA, 260674R, 260672R, 260672NC, 260668A, B01D 342, C07C 704, C07C 712

Patent

active

040533670

ABSTRACT:
A hydrocarbon stream comprising benzene is stripped at a high temperature to allow passage of the stripper bottoms stream into a clay treating zone without further heating, and the effluent of the clay treating zone is then exchanged against the feed stream to the stripper column to recover heat. Operation at the optimum clay treating temperature is achieved by adjusting the amount of the stripper bottoms stream which is split off for cooling by heat exchange against the feed to the stripper column. The cooled split-off portion is then admixed with the remaining high temperature portion. Adjusting the flow rate of the portion of hot clay treater effluent which is heat exchanged against the stripper feed stream is performed to control the temperature of either the stripper feed stream or the temperature of the clay treater effluent as it is passed into a downstream fractionator.

REFERENCES:
patent: 2733286 (1956-01-01), Maisel et al.
patent: 2775632 (1956-12-01), Honeycutt et al.
patent: 3291850 (1966-12-01), Carson
patent: 3434934 (1969-03-01), Washer
patent: 3446709 (1969-05-01), Marshall
patent: 3555837 (1971-01-01), McClintock
patent: 3754045 (1973-08-01), Ehrlich et al.
patent: 3835037 (1974-09-01), Fairweather et al.
patent: 4024026 (1977-05-01), Gewartowski

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