Provided is a pure liquid manufacturing apparatus capable of manufacturing pure liquid such as pure water efficiently. Together with a series of units, from a heating unit to a condensation unit, for obtaining pure liquid from vapor, a drain tank unit for storing liquid is disposed, after the liquid
Provided is a pure liquid manufacturing apparatus capable of manufacturing pure liquid such as pure water efficiently. Together with a series of units, from a heating unit to a condensation unit, for obtaining pure liquid from vapor, a drain tank unit for storing liquid is disposed, after the liquid discharged from the vaporization unit and the separation unit and new liquid are mixed in advance in the drain tank unit, the mixed liquid is pressurized by a pump unit and supplied to the heating unit. Consequently, the drain tank unit serves as a buffer for pressure, thus making it possible to maintain easily the pressure in the respective units such as the vaporization unit, etc., and reduce load of a vacuum exhaust unit to ensure a reduced pressure state, and dispose the required minimum valves for maintaining the pressure, thereby achieving the simplification of the apparatus structure.
대표청구항▼
1. A pure liquid manufacturing apparatus, comprising: a heating unit that heats a supplied liquid by heat exchange with a predetermined high temperature heat source to prepare a liquid and/or vapor having a predetermined temperature;a vaporization unit operatively connected to the heating unit, the
1. A pure liquid manufacturing apparatus, comprising: a heating unit that heats a supplied liquid by heat exchange with a predetermined high temperature heat source to prepare a liquid and/or vapor having a predetermined temperature;a vaporization unit operatively connected to the heating unit, the vaporization unit configured to receive the liquid and/or vapor from said heating unit and to vaporize at least said liquid in a decompression space;a separation unit operatively connected to the vaporization unit, the separation unit configured to collect liquid of the liquid and/or vapor supplied from said vaporization unit to remove the liquid from the liquid and/or vapor;a condensation unit operatively connected to the separation unit, the condensation unit configured to cause the vapor received from said separation unit to be subject to heat exchange with a predetermined cooling liquid to condense it to obtain pure liquid;a drain tank unit operatively connected to the vaporization unit and to the separation unit, the drain tank configured to collect a remaining liquid, which has not been vaporized by said vaporization unit, and the liquid, which has been removed by said separation unit, to temporarily store the remaining liquid and the liquid which has been removed by said separation unit; anda pump unit operatively connected to the heating unit and to the drain tank, the pump unit configured to pressurize the liquid in said drain tank unit to supply it to said heating unit,wherein:a fresh liquid is newly supplied from a predetermined liquid supply source to said drain tank unit such that the drain tank unit contains a mixed liquid, said fresh liquid as newly supplied, the remaining liquid from said vaporization unit, and the liquid which has been removed by said separation unit in a mixed state, the drain tank unit configured to supply the mixed liquid through the pump unit to said heating unit; anda liquid supply tank unit that is provided between said liquid supply source and the drain tank unit to temporarily store the fresh liquid as newly supplied from the liquid supply source and supply it to a side of the drain tank unit; andwherein:said drain tank unit is provided with a sensor unit that measures an electric conductivity of the mixed liquid of said fresh liquid as newly supplied and the liquid from said vaporization unit and said separation unit in the mixed state, andthe drain tank unit, when the electric conductivity of said liquid in the mixed state in said drain tank unit, as measured by the sensor, exceeds a predetermined upper limit value, is configured to flow out a part of the liquid in the mixed state into said liquid supply tank unit. 2. The pure liquid manufacturing apparatus, according to claim 1, further comprising: an auxiliary condensation unit operatively connected to the condensation unit, the auxiliary condensation unit configured to discharge the pure liquid from said condensation unit and to receive a remaining vapor, which has not been condensed, and that causes the remaining vapor to be subject to heat exchange with a predetermined cooling liquid to condense a gaseous phase and supplies a pure liquid to a subsequent stage. 3. The pure liquid manufacturing apparatus, according to claim 1, wherein: the drain tank unit comprises a changeover valve configured to, when the electric conductivity of said liquid in the mixed state in said drain tank unit exceeds a predetermined upper limit value, flow out a part of the liquid in the mixed state into said liquid supply tank unit; andthe sensor unit is configured to measure the electric conductivity of the mixed liquid as exceeding a predetermined upper limit value.
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