The invention relates to a preparation device for water-soluble nanometer material
supercritical carbon dioxide anti-
solvent, comprising a high-pressure pump for
carbon dioxide, a high-pressure pump for solution, a
nozzle, a
crystallization reactor, a whole
filtration membrane crystallizer, a separation reactor, and a
cyclone separator, which is characterized in that: the
nozzle and the whole
filtration membrane crystallizer are arranged in the
crystallization reactor, the aperture of the
nozzle outlet is 1 to 1000um, the aperture of the whole
filtration membrane crystallizer is 50 to 500nm, the
cyclone separator is connected with the whole
filtration membrane crystallizer arranged in the
crystallization reactor, thus forming a closed
recovery system for products. The preparation device has the advantages of large whole
filtration membrane crystallizer area, fast crystallization,
small particle size, uniform distribution, high
crystallization rate of more than 80 percent, automatic collection of products without opening the cover of the crystallization reactor, ability to conversely blow the whole
filtration membrane crystallizer utilizing
carbon dioxide, and closely select products through the
cyclone separator, thorough collection of products, rapid
recovery of filter
membrane flux, no
pollution to environment, not harm to
human body, less
solvent consumption, high separation efficiency,
fast speed,
short cycle, low
energy consumption, and easy operation.