Fractionation tray with adjustable capacity weir means

Details Fractionation tray with adjustable capacity weir means Fractionation tray with adjustable capacity weir means

1976-03-29

1977-07-19

Lutter, Frank W.

Gas and liquid contact apparatus

Contact devices

Wet baffle

196133, 202158, B01D 4700, C10J 108, F02M 2904

Patent

active

040369188

ABSTRACT:
In accordance with the present invention, overflash within a withdrawal zone of a complex fractionating column is monitored to provide a surprisingly useful control characteristic related to the efficiency (or lack thereof) of not only the fractionation column inself, but associated processes linked to the column. To accurately monitor the overflash, notched weir means including an upright wall means, is positioned at the intersection of the withdrawal tray and the downcomers connecting the former with a lower, adjacent fractionating tray. Differential pressure measuring means is also provided with sensing means in the vicinity of the notched weir means. In turn, the differential pressure measuring means is connected in series to a recording means located external of the column. Result: As overlimit swings in overflash occur, corrective action, say via a separate process controller means, can be quickly implemented to bring the system back to stable operations.

REFERENCES:
patent: 1190400 (1916-07-01), Giele
patent: 1249614 (1917-12-01), Gibson
patent: 1505050 (1924-08-01), Lauritsen
patent: 1508677 (1924-09-01), Chase
patent: 1992780 (1935-02-01), Skeats
patent: 3053521 (1962-09-01), Plaster et al.
patent: 3136706 (1964-06-01), Harper

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