초록 ▼

A separator for separating micron and submicron sized particles from a carrying gas, is disclosed. A carrier gas contains a component which is capable of condensation in the separator. The carrier gas is accelerated and flows at high velocity in a duct. The lower limit of the high velocity is approx

A separator for separating micron and submicron sized particles from a carrying gas, is disclosed. A carrier gas contains a component which is capable of condensation in the separator. The carrier gas is accelerated and flows at high velocity in a duct. The lower limit of the high velocity is approximately Mach 1.0. Due to the acceleration to the high velocity the static temperature of the carrying gas decreases. As a result, the condensable component condenses on micron and mainly on submicron sizes particles which act as nucleation sites. Liquid droplets formed during the condensation are in the micron size range. The paths of the high velocity flow of the carrier gas and of the solid and liquid particles carried therein is influenced by a combination of a centrifugal force and an oblique shock zone which is created within the high velocity flow. As a result, the particles travel a different path than the carrying gas and are effectively captured and disposed by an appropriately positioned receiving member.

대표청구항 ▼

A process for separating solid particles including particles smaller than 1.0 micron, from a carrying gas composition, the gas composition having at least one condensable gaseous component capable of condensation under operative conditions of the process, the process comprising the steps of: passing

A process for separating solid particles including particles smaller than 1.0 micron, from a carrying gas composition, the gas composition having at least one condensable gaseous component capable of condensation under operative conditions of the process, the process comprising the steps of: passing the gas composition through a curved duct, a centrifugal force arising in the curved duct affecting the direction of travel of the particles in a different manner than the travel of gaseous components of the carrying gas composition; accelerating the flow of the gas composition to a high velocity the lower limit of which is substantially Mach 1.0 whereby the static temperature of the gas composition becomes lower at the high velocity than prior to said acceleration and whereby at least a portion of the condensable component condenses on the solid particles initially smaller than approximately 1.0 micron, said small particles acting as condensation sites resulting in liquid particles of a size larger than 1 micron, said liquid particles entrapping said small solid particles; causing a shock zone to occur in the high velocity flow of the gas composition whereby a flow path of the solid particles and of the condensed liquid particles entrapping said particles initially smaller than approximately 1.0 micron is further diverted from the flow path of the gaseous components, and collecting said solid particles and liquid particles. *** BRS DOCUMENT BOUNDARY ***