Apparatus and method for metering and controlling a feed of hydr

Details Apparatus and method for metering and controlling a feed of hydr Apparatus and method for metering and controlling a feed of hydr

1980-07-14

1982-08-31

Yuen, Henry C.

Liquid heaters and vaporizers

Indirectly heated separate injected fluid

Submerged flame

122 32, 122 33, 237 8R, F22B 102

Patent

active

043466737

ABSTRACT:
A boiler for vaporizing liquid hydrogen fluoride has a heat transfer surface arranged to be covered increasingly by the liquid as the liquid level rises so that the heat supplied to the boiler can be adjusted to maintain a constant level of liquid in the boiler and thereby equate the feed rate of liquid hydrogen fluoride to that vaporized. Thus by metering and controlling the feed rate of the liquid the feed rate of the vapor can be metered and controlled.

REFERENCES:
patent: 1681305 (1928-08-01), Moneuse
patent: 2007426 (1935-07-01), Harris
patent: 2904014 (1959-09-01), Meyers
patent: 3237608 (1966-03-01), Brandl
patent: 3249303 (1966-05-01), Townsend
patent: 3967591 (1976-07-01), Iida
patent: 4148281 (1979-04-01), Stoll et al.

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