Distillation: processes – separatory – With measuring – testing or inspecting – Of temperature or pressure
Patent
1978-06-05
1979-08-14
Serwin, R. E.
Distillation: processes, separatory
With measuring, testing or inspecting
Of temperature or pressure
23230A, 364501, 422112, F25J 302
Patent
active
041644514
ABSTRACT:
In a fractionation system in which pressure fluctuations within the fractionation vessel can result in alteration of the fractionator product composition, fractionation column pressure is monitored and converted to a temperature requirement signal representative of the temperature required within a preselected portion of the fractionation column in order to provide the desired product constituent distribution. The temperature requirement signal is utilized to provide a required heat signal which is representative of the direction and magnitude of any change necessary in the heat input to the fractionation column to maintain the required temperature. The heat input to the fractionation column is controlled in response to the required heat signal, corrected as necessary by actual analysis of the product.
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Buss et al., "Modern Control Concepts for Gas Processing Plants," Presented at 54th Ann. GPA Convention, Mar. 10-12, 1975, Houston, Texas.
Phillips Petroleum Company
Serwin R. E.
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