Precipitating scale-forming compounds from water, and forming fresh water
OwnerPaul S. Rollerinventor
Life of this patent
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Abstract
Water containing dissolved compounds is preheated, and is then pressurized in stages of water pressure, while receiving a quantum of steam. Scale-forming compounds in the water are thermally precipitated, and clarified post-thermal water is formed. This is flash vaporized in stages corresponding to the stages of water pressure, and the flashed vapors are compressed to form each said quantum of steam. Alternately, the flashed vapors themselves comprise each said quantum of steam, by being induced into the water as it flows through an eductor means. Flash-cooled, post-thermal water, substantially devoid of scale-forming compounds, is employed as such, or more generally is evaporated to form fresh water and an end concentrate of dissolved compounds.
Claims30
A process for removing from water containing dissolved compounds the scale-forming part thereof, which comprises preheating the water;
- pressurizing the water, which has been preheated, in stages of water pressure;
- passing a quantum of steam into the pressurized water in each said stage, and condensing the quantum of steam, forming in each stage further heated water, while thermoprecipitating scale-forming compounds in suspension in the water;
- from the last stage of water pressure, issuing further heated water containing a successively accumulated precipitate of scale compounds in suspension;
- separating said precipitate and forming post-thermal water;
- flash vaporizing, while flash cooling, said post-thermal water in flash vaporization stages corresponding to said stages of water pressure;
- at each said stage of flash vaporization, compressing the flashed vapor, the compressed vapor comprising said quantum of steam;
- and from the last stage of flash vaporization, issuing flash-cooled, post-thermal water containing dissolved compounds substantially removed of scale-forming compounds.
A process for removing from water containing dissolved compounds the scale-forming part thereof, which comprises preheating the water;
- pressurizing the water, which has been preheated, in stages of water pressure;
- passing pressurized water in each said stage through an eductor means;
- inducing a quantum of steam into the water in said eductor means at a point of high velocity and low pressure of the water, and condensing the quantum of steam, forming further heated water in each said stage, while thermoprecipitating scale-forming compounds in suspension in said further heated water;
- from the last stage of water pressure, issuing said further heated water containing a successively accumulated precipitate of scale compounds in suspension;
- separating said precipitate and forming post-thermal water;
- flash vaporizing, while flash cooling, said post-thermal water in flash vaporization stages corresponding to said stages of water pressure, at each said stage of flash vaporization, the vapor which has been flashed comprising said quantum of steam;
- and from the last stage of flash vaporization, issuing flash-cooled, post-thermal water containing dissolved compounds substantially removed of scale-forming compounds.
An apparatus for removing from water containing dissolved compounds the scale-forming part thereof, which comprises a preheating heat exchange means having an outlet for preheated water;
- a plurality of thermoprecipitation vessels and pump means intercommunicating successive said vessels;
- said pump means having an inlet connected to an outlet for water containing in suspension a precipitate of scale compounds on a preceding said vessel, and having an outlet for said water containing said suspension connected to an inlet on a succeeding said vessel, except that the inlet to the first of said pump means is connected to said outlet for preheated water;
- an inlet for a quantum of steam on each said thermoprecipitation vessel;
- the outlet for said water containing said suspension on the last of said plurality of thermoprecipitation vessels connected to an inlet on a solids separation means, which is provided with an outlet for a precipitate of scale compounds accumulated in said thermoprecipitation vessels and an outlet for post-thermal water;
- said outlet for post-thermal water connected to an inlet on the first of a plurality of intercommunicating flash vaporization chambers corresponding to said plurality of thermoprecipitation vessels;
- each said chamber provided with an outlet for flashed vapor connected to an inlet of a vapor compression means having an outlet for compressed vapor, constituting said quantum of steam, connected to said inlet for a quantum of steam;
- the last of said plurality of flash vaporization chambers provided with an outlet for flash-cooled, post-thermal water containing dissolved compounds substantially removed of scale-forming compounds.
An apparatus for removing from water containing dissolved compounds the scale-forming part thereof, which comprises a preheating heat exchange means having an outlet for preheated water;
- a plurality of thermoprecipitation vessels and combination of pump means and eductor means;
- said eductor means of said combination following said pump means in flow communication with it;
- said combination intercommunicating successive said vessels;
- said pump means having an inlet connected to an outlet for water containing in suspension a precipitate of scale compounds on a preceding said thermoprecipitation vessel;
- said eductor means having an outlet for said water containing said suspension connected to the inlet of a succeeding said vessel, except that the inlet to the first of said pump means is connected to said outlet for preheated water;
- an inlet for a quantum of steam on said eductor means at a point of high water velocity and low pressure;
- the outlet for said water containing said suspension on the last of said plurality of vessels connected to an inlet on a solids separation means, which is provided with an outlet for a precipitate of scale compounds accumulated in said thermoprecipitation vessels and an outlet for post-thermal water;
- said outlet for post-thermal water connected to an inlet on the first of a plurality of intercommunicating flash vaporization chambers corresponding to said plurality of thermoprecipitation vessels;
- each said chamber provided with an outlet for flashed vapor, constituting said quantum of steam, connected to said inlet for a quantum of steam;
- the last of said plurality of flash vaporization chambers provided with an outlet for flash-cooled, post-thermal water containing dissolved compounds substantially removed of scale-forming compounds.
An apparatus for removing from water containing dissolved compounds the scale-forming part thereof, which comprises a preheating heat exchange means having an outlet for preheated water;
- a thermoprecipitation vessel;
- a combination of pump means and eductor means, said eductor means following said pump means in flow communication with it;
- said pump means having an inlet connected to said outlet for preheated water;
- an inlet for steam on said eductor means at a point of high water velocity and low pressure;
- an outlet on said eductor means, connected to an inlet on said thermoprecipitation vessel;
- an outlet on said thermoprecipitation vessel for water containing in suspension a precipitate of scale compounds, connected to an inlet on a solids separation means;
- an outlet on said solids separation means for a precipitate of scale compounds and an outlet for post-thermal water, connected to an inlet of a flash vaporization chamber;
- an outlet on said flash vaporization chamber for flashed vapor, constituting said steam, communicating with said inlet for steam on said eductor means;
- and an outlet on said flash vaporization chamber for flash-cooled, post-thermal water containing dissolved compounds substantially removed of scale-forming compounds.
Dependencies are inferred from the claim text.