METHOD OF AIR CLEANING Russian patent published in 2015 - IPC B01D47/05 

FIELD: process engineering.

SUBSTANCE: invention relates to dust separation equipment. Claimed process consists in cooling and supersaturating of airflow being cleaned with water vapours in forcing said airflow through damper and difference-temperature condensation chamber with gas line, mainly of rectangular cross-section, its opposite adjacent walls having different temperature, and in separating the solid and condensed phases from the flow. Upper and lower bottoms are connected by side walls over periphery to make a closed chamber. Said walls are furnished with connectors to allow feeding working body into pipelines and mounting meters therein. Duct side walls are composed of parts, flexible jointed, to perform angular and radial displacement both inside and outside of said gas duct. Said duct is composed by top, bottom and side walls. Duct length is varied by inlet radial displacement while duct geometry is changed by displacement of sidewalls in axial and angular directions. Note here that different-temperature condensation chamber duct pressure and that in closed chamber are kept constant. Proposed method consists in that the air-steam flow in the chamber is additionally turbulized and mixed by extra rib fitted at the chamber centre to divide the chamber inside into two parts. Note here that said rib can communicate the parts of said chamber. Note also that said rib is fitted along chamber lengthwise axis, mainly, parallel therewith and with shift to stage hot sidewall for x = (0.1…0.3)X, where x is rib shift to hot sidewall, X is channel width. In compliance with one version, gaps are provided between said rib and bottoms to make δ = (0.1…0.3)h, where δ is gap value between both bottoms and rib, h is duct height composed by upper and lower bottoms. Rib has through channels to communicate aforesaid cavities of the chamber. Note here that total area of said channels is s = (0.25…0.4)S, where s is total area of through channels while S is area of the duct lengthwise cross-section at rib location. Rib dividing the chamber cavity into two parts is shaped with cross-section composed of alternating ledges and recesses. Duct inlet wall is movable while cold wall is composed of follow body with working medium feed and discharge unions. Hot wall is composed of hollow body with working medium feed and discharge unions made up of the plate with electrical heaters arranged at its surface.

EFFECT: higher efficiency of the process.

8 cl, 3 dwg