Experimental Study On A New Desalination Device System Driven By Tidal Power Directly

In recent decades reverse osmosis desalination technology has developed rapidly in the field of desalination. Compared to other desalination technology, it has the advantages of corrosion and scaling slightly, less investment. However, this technology needs a lot of power to make high-pressure seawater, which not only increases the preparation costs of making freshwater and carbon emissions, but also exacerbate the energy crisis. In order to solve the problem of high energy consumption, high cost and high carbon emissions earlier stage, the research group raise the plan of desalination was driven by tidal energy, but failed to prove this plan was feasible in fact. The purpose of this paper is to study the feasibility of the tidal power reverse osmosis desalination project,develop a set of tidal shaped supercharging device, through the experimental study on its supercharging effect and other performance. This paper also aimed at tidal water desalination and salt a set of process, put forward a set of double-effect energy saving can be realized pulse can exchange device design scheme.This paper though build desalination’s test platform, develop plunger type tidalshaped supercharging device and match reverse osmosis membrane component for the tidal- shaped supercharging device to test system runtime data, besides, to prove the plan is feasible and found the problem of it.Results of the test and research shows when the water level has regularly, the speed of the supercharging device and the pressure of the seawater both gradually increase as the flow in the pipeline increase. When the flow in the pipeline has regularly, the speed of the supercharging device and the pressure of the seawater both gradually increase as the water level increase. The water pressure are getting slower and slower growth with the increase of water pressure, because pressurized water will more difficult when the pressure of water is greater. Intake of reverse osmosis membrane element, the water pressure has reached 6 Mpa, has satisfy the reverse osmosis desalination of sea water pressure requirements. Output the fresh water in the experiment, the speed of the output water will be affected by the tidal water level and water flow of the tidal- shaped supercharging device. The high pressure water’s pressure at the exit of the plunger type tidal- shaped supercharging device is pulsating, which will impact the stable operation of the system and reduce the quality of fresh water, so we need to put water pressure stable.This paper get the following conclusions based on the actual testing a large number of data and related literature review, the plan of tidal shaped pressurization was feasible, water pressure has to meet the requirements of the reverse osmosis desalination. The plan of desalination was driven by tidal energy was feasible. Desalination and salt integration method has been put forward by my research group and this method can solve the problem more effective. That problem is that the high pressure water’s pressure pulsating. In the case of no additional energy consumption, the high pressure the pressure fluctuation of the water directly transferred to salt production process required for the heat flow by this method. This method save voltage stabilizer and the device to produce pulsating heat flow, besides, this method also raise the use efficiency of tidal power and achieve the effect of the bidirectional energy saving. In the process of solution to the water pressure pulsation, the variable-frequency pulse can switch is designed by research group and the switch first at home and abroad.