Direct contact, binary fluid geothermal boiler

Heat exchange – Geographical

Patent

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Details

606413, 122 31R, 165111, 165114, F28D 2100

Patent

active

043265812

ABSTRACT:
Energy is extracted from geothermal brines by direct contact with a working fluid such as isobutane which is immiscible with the brine in a geothermal boiler. The geothermal boiler provides a distributor arrangement which efficiently contacts geothermal brine with the isobutane in order to prevent the entrainment of geothermal brine in the isobutane vapor which is directed to a turbine. Accordingly the problem of brine carry-over through the turbine causes corrosion and scaling thereof is eliminated. Additionally the heat exchanger includes straightening vanes for preventing startup and other temporary fluctuations in the transitional zone of the boiler from causing brine carryover into the turbine. Also a screen is provided in the heat exchanger to coalesce the working fluid and to assist in defining the location of the transitional zone where the geothermal brine and the isobutane are initially mixed.

REFERENCES:
patent: 2561471 (1951-07-01), Hatfield
patent: 3164957 (1965-01-01), Fricke
patent: 3227649 (1966-01-01), Ghormley et al.
patent: 3988895 (1976-11-01), Sheinbaum
patent: 4057964 (1977-11-01), Hutchison
patent: 4063418 (1977-12-01), Shields
patent: 4084379 (1978-04-01), Schwartzman
patent: 4089175 (1978-05-01), Woinsky
patent: 4144715 (1979-03-01), Fleck et al.

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