SOLIDS DESUBLIMATOR Russian patent published in 2011 - IPC B01D7/02 

FIELD: process engineering.

SUBSTANCE: invention relates to desublimation and may be used in chemistry and pharmaceutics to make fine- and ultra-dispersed materials in minor volumes of products. Proposed solids desublimator comprises two desublimators with openings to feed vapor of product to be desublimator and cold carrier gas that are provided with vapor and gas distributing chambers with grids and sublimators, horizontal mixing chamber and finished product separation units. Mixing chamber is divided into sections by horizontal baffles with height not exceeding half the height of the chamber. Odd baffles are arranged at chamber bottom while even baffles are mounted atop the chamber. All walls and baffles of said chamber are perforated. Chamber bottom perforation represents alternating zones confined by baffle arranged at the bottom and having even number of zones while that confined by baffle made atop the chamber has odd number of zones. Odd zones have clear area of (0.25-10)% while that of even zones is one and a half or two times greater.

EFFECT: reduced sticking to desublimator walls, higher yield of finished product.

3 dwg