High temperature boiler and method

Details High temperature boiler and method High temperature boiler and method

1974-08-12

1976-02-24

Sprague, Kenneth W.

Liquid heaters and vaporizers

Indirectly heated separate injected fluid

Submerged flame

122 28, F22B 106

Patent

active

039398030

ABSTRACT:
A process for vaporizing liquid water which allows the use of relatively impure boiler feed water comprising providing a heat-carrying liquid at a predetermined elevated temperature to the boiler, providing liquid water to the boiler, transferring heat from the heat-carrying liquid directly to the liquid water to be vaporized within the boiler and separately withdrawing the produced steam from the boiler. Suitable heat-carrying liquids include lead, tin and bismuth and alloys principally thereof. A process for the production of superheated steam from natural waters which have not been previously purified utilizing the above described process for production of steam in combination with a process for superheating the steam by passing the produced steam in heat exchange relation with a plurality of liquid droplets of molten metal or a molten inorganic salt which has been heated to a predetermined temperature for superheating the steam.

REFERENCES:
patent: 1127690 (1915-02-01), Smoot
patent: 1682265 (1928-08-01), Bringhenti
patent: 1807783 (1931-06-01), Gay
patent: 1997980 (1935-04-01), Smith
patent: 2561471 (1951-07-01), Hatfield
patent: 3032482 (1962-05-01), Shoemaker
patent: 3164957 (1965-01-01), Fricke

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