Separator of fluid-solid mixtures

Claim 1

Apparatus for separation of pneumatically conveyed solid from the conveying fluid comprising: 1. a horizontally disposed fluid-solid separator comprising: a. a horizontally disposed hollow cylindrical body portion; b. a tangential inlet conduit adjacent one end of the body portion; c. an outlet for separated solids adjacent the other end of the body portion; d. an outlet for discharge of separated fluid at said other end of the body portion; 2. a vertically disposed fluid-solid separator comprising: a vertically disposed cylindrical body portion, a tangential inlet adjacent the upper end of the body portion, an outlet for separated solids adjacent the lower end of the body portion, and an outlet for discharge of separated fluid, the top of the vertically disposed separator being below about the top of the horizontally disposed separator; 3. an interconnecting conduit communicating the outlet for separated fluid of the horizontal separator with the inlet of the vertical disposed separator for delivery of the separated fluid of the horizontally disposed separator to the vertically disposed separator, for separation of solids entrained in the separated fluid of the horizontally disposed separator, 4. a blower disposed in said interconnecting conduit drawing suction on the horizontal separator for delivery of separated fluid of the horizontal separator to the vertical separator, 5. second conduit means communicating the outlet for separated solids of the vertically disposed separator, with the inlet conduit of the horizontally disposed separator intermediate the ends of the inlet conduit for recycling solids separated by the vertically disposed separator to the horizontally disposed separator, said second conduit means being in open communication with the outlet of the vertically disposed separator and the inlet conduit of the horizontally disposed separator.