countercurrent osmosis work device

Abstract

The present invention disclosed a kind of inverse infiltration device. This device is by the first osmotic device, the first liquid turbine, the first pressure recovery device, the first regulatory valve, the pressure reducing valve, the evaporator, the thick solution loop pump, the bypass passage,Soluble pressure pump, second pressure recycler, bypass -driven solution booster pump, second regulatory valve, second liquid turbine, condenser, condenser water pressure pressure pump, second osmotic pump, thick solution pressure pump, thick solution pressure pump, thick solutionThe solution pressure pump, cooler, etc. are composed.The invention uses the inverse decompression infiltration process between the solution / solution system to reduce the inferiority difference between the general solution / water system, and increase the utilization rate of liquid pressure contained in the solution itself.

Description

technical field [0001] The invention relates to the technical field of power equipment, in particular to a countercurrent osmosis work device. Background technique [0002] Low-grade heat sources below 80°C exist widely in nature, and they can generally be used to obtain low-grade cold sources (such as using heat converters) or for solution regeneration, which actually converts heat energy into liquid chemical A conversion and utilization of energy, further, the use of decompression osmosis work technology can convert this liquid chemical energy into liquid pressure energy, and then drive the liquid turbine to do work, realizing the conversion of low-grade heat source to electric energy, which is a renewable Clean energy usage. [0003] The work of decompression osmosis can obtain MPa-level liquid pressure energy under the condition of small temperature difference, and can easily drive the liquid turbine to do work, so it can be better applied to low-grade heat sources. Th...

AI Technical Summary

Problems solved by technology

However, when this method is used in a higher concentration solution, it will bring corresponding problems, that is, the corresponding osmotic pressure will be much higher than the pressure limit of the current commercial membrane (about 10Mpa), so it can only be operated at a temperature lower than 10Mpa. Operating under pressure will cause a lot of waste. For example, in theory, at an ambient temperature of 30°C, the osmotic pressure of the solution generated by a heat source of 40°C will be as high as 80Mpa, and the irreversible loss will waste the osmotic pressure difference of 70Mpa.

In order to reduce this irreversible loss, the patent application (CN201310695691) proposed a two-stage osmotic concentration work device, which uses organic working fluid instead of aqueous solution to increase the driving temperature difference, and proposes a two-stage structure to reduce mixing loss, but its disadvantages The system is complex, and there is currently no mature forward osmosis membrane that can pass through organic working fluids.

Images