FIELD: micro dispersing agents.
SUBSTANCE: invention relates to micro dispersers in which micro droplets of mainly spherical shape of nanoliter and sub-nanolitre volume are generated, and then generated droplets can be used in chemical, pharmaceutical and other technologies, including for mass-exchange processes and chemical reactions between reagents dissolved in drops, or dissolved in drops and in a solid medium, as well as for subsequent application of biologically active substances on the surface of formed drops. Essence of the invention lies in the fact that in the microdispersant for generation of drops of one liquid in another with a narrow disperse composition, comprising a housing in the form of a channel of an extended shape, a nozzle for input of the disperse phase coaxially attached to the housing, and connected to side surface of housing one or more branch pipes for input of solid phase, channel cross-section from branch pipe branch for disperse phase input is made periodically varying, wherein inner size h of narrow part of channel is made in accordance with design formula
where d is average size of drops, which need to be generated in microdispersant, m; Q1 is flow rate of disperse phase, m3/s; Q2 is flow rate of continuous phase, m3/s, and internal size H of wide part of channel is made in accordance with design formula:
, wherein spatial period λ between adjacent waves in periodically varying structure of housing is made in accordance with design formula
.
Number of waves in the periodically varying body structure in the microdispersant ranges from 3 to 7. Device enables to form in a liquid in micro channels spherical drops (microspheres) with dimensions distributed in a sufficiently narrow range, as well as provide an equal distance between adjacent drops, which will prevent their collision and subsequent coalescence.
EFFECT: technical result consists in improvement of universality of the device and possibility of its applicability for processes with different parameters (physical and chemical properties of media and costs of components) due to the fact that the invention allows to expand the range of flow of solid and dispersed phases, which ensures production of spherical drops of specified sizes as a result of disintegration of dispersed phase jet.
1 cl, 2 dwg
