Abstract: A primary conduit for a dilute phase particulate laden pneumatic stream is aligned with a dead pocket at the intersection of the primary conduit with secondary and tertiary conduits perpendicular to the primary conduit. The primary conduit is adjustable with respect to the dead pocket to vary the position at which the stream is directed into the dead pocket to thereby control division of the amount of particulate separated into the secondary and tertiary conduits. Thus, the ratio of particulates entering the secondary and tertiary conduits may be varied in a predetermined manner.

Abstract: A horizontally disposed scrubber is provided with a generally horizontally disposed adjustable venturi having a slot-type liquid introduction through which a liquid is introduced into a particle laden gas stream.

Abstract: Control of discharge of particulate solids from a pressurized vessel is attained through a downwardly directed conduit with or without the use of valves. The lower end of the conduit has a greater cross-sectional area than the upper end of the conduit. The lower end of the conduit may extend into a fluidized bed. Discharge of solids from the vessel may be controlled by controlling the height and degree of aeration of the fluidized bed.

Abstract: A granular bed filter, capable of being backwashed, is disclosed without screens. The filter beds of granular material are generally U-shaped in section.

Abstract: A granular bed filter, capable of being backwashed, is disclosed without screens. The filter beds of granular material are generally U-shaped in section.

Abstract: Steam is generated in a controlled manner as a function of the steam demand by way of a combustor adapted to burn a fuel such as high sulfur coal in a fluidized bed. The steam demand and the steam available to supply the demand are modulated to change the rate of production of steam as a function of controlling the fluidization of fuel beds and/or the height of fuel in the beds. Any fuel beds which are slumped are maintained at a temperature slightly above the flash point temperature of the fuel.

Abstract: The filter apparatus includes a plurality of hollow filter chambers each including a filter bed whose volume greatly exceeds the volume of the granular filter material such as sand. The beds are backwashed by a steady flow of low pressure air sufficient to fluidize the beds.

Abstract: The dust collector includes an upright elongated cylindrical gas scrubber having a tangential gas inlet for dust laden gas and a duct having its entrance and exit connected to the scrubber above said inlet. The duct includes a dynamic separation and impelling means. Between the duct entrance and said impelling means, there is provided a restriction to gas flow, such as an orifice plate, for substantially reducing the cross sectional area of the duct by an amount sufficient to create turbulence in the duct.