32results about How to "Watered down realization" patented technology

The invention discloses a waste heat electricity-water coproduction system. The water heat electricity-water coproduction system comprises a low-temperature Rankine cycle power generation system and a steam exhaust seawater desalting system. An energy staircase-type utilization system for generating the electric power by utilizing the primary waste heat and desalting the seawater by utilizing the secondary waste heat can be realized by utilizing a great amount of exhaust steam and smoke discharged from enterprises such as iron and steel, cement and petroleum chemistry. The waste heat electricity-water coproduction system is characterized in that the low-temperature seawater desalting technology for establishing a vacuum environment by utilizing the water column height and sucking the seawater by utilizing the capillary force is combined with the low-temperature Rankine cycle power generation. In the seawater desalting system, the discharge of the concentrated salty water utilizes a siphon effect, and the seawater replenishment utilizes the capillary suction force, so that no additional pump power input is needed for operating the desalting system. According to the technical scheme, a seawater desalting evaporator is used for substituting the traditional Rankine circulating condenser, so that the Rankine circulation low-temperature exhaust steam is further recycled, not only is the electricity-water coproduction realized, but also the problem of the low heat efficiency in a waste heat power generation system can be solved, and energy conservation and emission reduction can be realized.

The invention discloses a wave-energy full-automatic sea water desalting device and a realizing method. The wave-energy full-automatic sea water desalting device includes a wave energy absorbing device, a seawater fetching device, a seawater desalinating system, a fresh water recovery device and a buoyancy tank, wherein the wave energy absorbing device includes there parts, namely, a floating body, a one-way ratchet wheel and an oscillating bar; the seawater fetching device includes rolling shafts and a black water absorption cloth strip; the seawater desalinating system consists of a thermal-insulating inverted U-type transmitting glass cooling cover, a horn-shaped opening and a check valve; the fresh water recovery device includes a fresh water recovery tank, a recovery pipeline and a water storage tank. According to the invention, the seawater fetching device is driven by wave energy absorbed by the floating body, and constantly fetched seawater absorbs thermal energy generated by the irradiation of sunlight, and evaporates to generate vapor, vapor condenses after being cooled, and fresh water is stored in the water storage tank through the fresh water recovery tank; the wave-energy full-automatic sea water desalting device fully utilizes mechanical energy generated when the wave swings, and directly and efficiently utilizes the mechanical energy generated when the wave swings without converting the wave energy into electric energy; the desalted water is good in quality and has no foreign flavor, the entire device needs no complicated power generation and transmission devices, all parts can be mounted simply and conveniently, and the service life is long.

The invention provides a method and system for preparing fresh water by using dew condensation temperature difference between seawater and fresh water. The method comprises the following steps: a, heating seawater to 45 to 65 DEG C by using heat exchange heat of a refrigeration apparatus; b, subjecting the heated seawater to primary desalination so as to form low-salinity fog; c, subjecting the low-salinity fog formed by primary desalination to low-temperature dew condensation in a range of 8 to 12 DEG C so as to allow fresh water molecules in the low-salinity fog to become dew through condensation and recovering powdery salt crystal formed uncondensed high-salinity fog; and d, carrying out secondary desalination with a reverse osmosis membrane and active carbon and purifying obtained fresh water until fresh water meets drinking water standards. The system comprises a water pump, a seawater storage container, a seawater heating container, an ultrasonic atomizer, the refrigeration apparatus, a fan and a secondary desalination apparatus. The method provided by the invention has the advantages that energy consumed in the process of seawater desalination is low; the service life of consumables is long; the amount of prepared fresh water is great; secondary pollution is not posed to the marine environment; maintenance cost is low; and the method is suitable for large-scale application.