3 results about "Osmotic power" patented technology

The application provides a multi-stage reverse electrodialysis device system and a power generation method thereof, which utilizes the salt difference energy of concentrated seawater. The device system comprises a concentrated seawater tank, n-stage river water tanks, n-stage electrolyte tanks and n-stage reverse electrodialysis membrane stacks connected in series, and n is greater than or equal to 2. The concentrated seawater tank is connected to the first-stage reverse electrodialysis membrane stack. The i-stage river water tank and the i-stage electrolyte tank are independently connected to the i-stage reverse electrodialysis membrane stack, and 1 is less than or equal to i and is less than or equal to n. The power generation method comprises the following steps: (1) introducing the concentrated seawater, the river water and the electrolyte into the concentrated seawater tank, the n-stage river water tanks and the n-stage electrolyte tanks respectively; (2) setting the flow rates of the concentrated seawater, the river water and the electrolyte, and starting the n-stage reverse electrodialysis membrane stacks to generate power. The device system provided by the application effectively utilizes the salt difference energy and reduces the salinity of the concentrated seawater, realizes the standard discharge of the concentrated seawater, meets the green and environmental protection resource utilization requirements and is conducive to large-scale popularization and application.

This invention relates to the field of renewable energy power generation technology, specifically disclosing a comprehensive offshore renewable energy utilization system, including a platform, a seawater desalination unit, a salinity gradient power generation unit, and an energy storage unit. The seawater desalination unit has a waste inlet, and the salinity gradient power generation unit includes a permeation tank, a permeation membrane, and a first hydro-generator. The permeation membrane divides the internal space of the permeation tank into a concentrated seawater chamber and a fresh seawater chamber. The permeation tank has a first inlet connected to the concentrated seawater chamber and the waste inlet, a first outlet connected to the concentrated seawater chamber and the inlet of the first hydro-generator, a second inlet, and a second outlet. Both the first hydro-generator and the energy storage unit are electrically connected to a microgrid. This invention combines a seawater salinity gradient power generation system with a seawater desalination system, using the waste from the seawater desalination system as the extractant and ordinary seawater as the feed liquid. It utilizes the principle of osmotic pressure to convert the chemical potential energy of water into the required electrical energy, reducing the cost of seawater desalination and improving economic efficiency.

The application provides a ship CO2 hydrate capture system and method using waste heat energy and osmotic energy. The system comprises: a tail gas pretreatment module for sequentially performing cooling treatment, oxidation dust removal treatment and desulfurization and denitrification treatment on ship tail gas; a waste heat energy-osmotic energy power generation module for storing electric energy generated by organic Rankine cycle waste heat power generation and osmotic power generation; a hydrate method carbon capture module for bubbling and strengthening CO2 hydrate generation of flue gas after the tail gas pretreatment module, and forming hydrate slurry after CO2 hydrate accumulation, wherein a part of the hydrate slurry is subjected to CO2 capture, heating and pressure relief decomposition to produce purified water, and pure CO2 gas and purified water are obtained; another part of the hydrate slurry is subjected to filtration to obtain CO2 hydrate solid and storage; a CO2 transfer, utilization and storage module is used for directly storing the pure CO2 gas and the CO2 hydrate solid into the ocean or geology, or transporting the pure CO2 gas and the CO2 hydrate solid to downstream users for industrial utilization or biological utilization.