초록 ▼

A combined water purification and power generating plant is disclosed having special features designed to maximize the cycle thermal efficiency and salt recovery, with little or no concentrated brine produced therefrom. Using the plant, a volume of salt water is delivered to a plurality of indirect

A combined water purification and power generating plant is disclosed having special features designed to maximize the cycle thermal efficiency and salt recovery, with little or no concentrated brine produced therefrom. Using the plant, a volume of salt water is delivered to a plurality of indirect and direct contact feed heaters. Within the direct contact heaters, the salt water is heated and diluted by condensation therein by super-heated steam delivered thereto. Any alkaline salts having reverse solubility characteristics particulate and are filtered therefrom. From the last direct contact feed heater, the diluted salt water is delivered to a plurality of high pressure, high temperature evaporators arranged in a series which are used to further heat, evaporate and filter the salt water in multiple stages thereby improving the plant\s efficiency. A steam heater is used to super-heat a steam which delivered to various areas of the plant to heat and evaporate the salt water. High and low pressure steam turbines are also provide which utilize the steam to generate electrical power. The turbines are also arranged so that the exhaust steam therefrom may be used to heat the salt water in the feed heaters and then condensed into fresh water. An optional expansion tank is also provided for additional evaporation of the concentrated brine from the last evaporator.

대표청구항 ▼

A water purification and power generating plant which operates on a regenerative-reheat cycle comprising: a. a steam heater capable of super-heating steam; b. a water treatment tank capable of receiving a volume of contaminated water to be purified; c. a heat exchanger capable of heating said contam

A water purification and power generating plant which operates on a regenerative-reheat cycle comprising: a. a steam heater capable of super-heating steam; b. a water treatment tank capable of receiving a volume of contaminated water to be purified; c. a heat exchanger capable of heating said contaminated water delivered from said water treatment tank; d. an indirect contact feed heater capable of receiving and further heating said contaminated water delivered from said heat exchanger; e. multi-stage direct contact feed heaters, said multi-stage direct contact feed heaters including a plurality of direct contact feed heaters arranged in a series arrangement capable of gradually heating and diluting said contaminated water delivered thereto from said indirect contact feed heater, each said direct contact feed heater being capable of receiving said super-heated steam from said steam heater to heat and to dilute said contaminated water contained therein, each said direct contact feed heater having a pumping means capable of forcibly moving and elevating the pressure of said contaminated water from one said direct contact feed heater to an adjacent direct contact feed heater located downstream therefrom, each said direct contact feed heater also including a filtering means capable of removing particulating solutes from said contaminated water contained therein; f. multi-stage evaporators capable of evaporating said contaminated water delivered from last said direct contact feed heater, said multi-stage evaporators including a plurality of evaporator tanks arranged in a series arrangement capable of receiving said contaminated water and super-heated steam from said steam heater to supply heat of vaporization needed to evaporate said contaminated water contained therein, each said evaporator tank also connected to a filtering means capable of removing any particulating solutes from said contaminated water contained therein; g. a demister connected to one of said evaporator tanks capable of removing any entrained liquid or solid in said steam and water vapor exiting therefrom; h. a means for delivering said steam and water vapor produced by evaporation of said contaminated water inside each said evaporation tank to said steam heater for super-heating; i. a combination power generating and steam moving means capable of producing electrical power and capable of moving said super-heated steam through the plant, said combination power generating and steam moving means including a turbine system which operates on a regenerative-reheat cycle; j. a condenser means capable of receiving said exhaust steam from said turbine system and condensing it into portable water, said condenser being disposed between said water treatment tank and said heat exchanger so that said contaminated water delivered from said water treatment tank may be used as a coolant medium in said condenser means; k. a water conduit means capable of transporting said contaminated water in said plant, and; l. a steam conduit means capable of transporting said super-heated steam within said plant.