Abstract: There is described a powder isolating valve which is capable of sealing valves from powder leakage during transport of powder and/or granular material. The valve comprises a rotatable valve closure member (14) and a pneumatically activated sealing mechanism containing a pair of resiliently deformable structures (18,20) extending around a surface of the rotatable valve closure member when the latter is in its closed position, the pair of resiliently deformable structures being held in a pair of annular recesses (32,34) which also extend around an surface of the rotatable valve closure member in its closed position, wherein the pair of resiliently deformable structures are capable of being pneumatically activated to force a sealing ring (26) against the rotatable valve closure member.

Abstract: A pneumatic conveying apparatus operable to transport material from a supply source to a process which requires a rate of change of feed rate far in excess of what is possible from a typical pneumatic conveying system and pipeline alone, and for a process where storage of large volumes of material directly adjacent to the process feed point is either not possible or disadvantageous. The pneumatic conveying apparatus (100; 101;102) comprises at least one conduit (11) and a compression device (8) operable to supply and transport pneumatic media through at least one conduit (11). The supply source (1) may be a feed hopper and is operable to discharge material into the pneumatic conveying system downstream of the supply source. In the pneumatic conveying system at least one vessel (9; 9A, 9B; 20) is arranged to receive material from the supply source (1) and to discharge material to at least one conduit (11).

Abstract: There is described a powder isolating valve which is capable of sealing valves from powder leakage during transport of powder and/or granular material. The valve comprises a rotatable valve closure member (14) and a pneumatically activated sealing mechanism containing a pair of resiliently deformable structures (18,20) extending around a surface of the rotatable valve closure member when the latter is in its closed position, the pair of resiliently deformable structures being held in a pair of annular recesses (32,34) which also extend around an surface of the rotatable valve closure member in its closed position, wherein the pair of resiliently deformable structures are capable of being pneumatically activated to force a sealing ring (26) against the rotatable valve closure member.

Abstract: An apparatus and a method for controlling the velocity of a particulate material conveyed by a gas flow under negative pressure in a duct said device comprising means for separating the flow into first and second streams. The first stream has a relatively high particulate material content and the second stream has a relatively low particulate material content. The flow of the second stream is restricted for example by a flow restricting or constricting orifice or valve. The duct diameter may increase incrementally along its length.

Abstract: Containers, particularly to containers for storing dry granules and powders, for examples silos. A container can include an air filter for cleaning the air that pneumatically conveys bulk product into the container. A valve can be used to restrict the air flow through the air filter, thereby elevating the pressure within the container to above atmospheric pressure.

Abstract: An apparatus and a method for controlling the velocity of a particulate material conveyed by a gas flow under negative pressure in a duct said device comprising means for separating the flow into first and second streams. The first stream has a relatively high particulate material content and the second stream has a relatively low particulate material content. The flow of the second stream is restricted for example by a flow restricting or constricting orifice or valve. The duct diameter may increase incrementally along its length.

Abstract: An elongate container (7) for the transport of bulk powders is provided along its base with a longitudinally sloping membrane support. A gas permeable membrane (11) is mounted on the support and the support is itself unsupported relative to the container between its longitudinal and transverse ends. A method of conveying bulk powder using such a container is also described.

Abstract: A device for controlling the velocity of a particulate material conveyed by a gas flow in a duct comprises means for separating the flow into first and second streams. The first stream has a relatively high particulate material content and the second stream has a relatively low particulate material content. The flow of the second stream is restricted for example by means of a flow-constricting orifice. The effect of the device is to increase the pressure of a vessel into which particulate material is discharged from the duct, thereby reducing the velocity of the material flow.

Abstract: An apparatus and system for conveying drill cuttings employing a conveyance gas to induce movement of the non-free flowing drill cuttings in a vessel.

Abstract: A container for the transport or storage of a bulk granular product is of generally cylindrical shape. Within the container is located a substantially conical exit hopper (13, 15, 17) and means (21) to convey the granular product from the exit hopper to the exterior of the container.

Abstract: Apparatus for delivering a bulk material (24) to a location where said bulk material (24) is to be processed, the apparatus comprising means (2) for feeding said bulk material (24) substantially tangentially into a cylindrical vessel (1) via at least two circumferentially spaced apart tangential inlets (14), the vessel (1) being provided at one end with an outlet (10) whereby the bulk material (24) may pass from the vessel (1) to said location while maintaining its configuration.

Abstract: The invention relates to containers, particularly to containers for storing dry granules and powders, for examples silos.

Abstract: A container for the transport or storage of a bulk granular product is of generally cylindrical shape. Within the container is located a substantially conical exit hopper (13, 15, 17) and means (21) to convey the granular product from the exit hopper to the exterior of the container.

Abstract: An apparatus and system for conveying drill cuttings employing a conveyance gas to induce movement of the non-free flowing drill cuttings in a vessel.

Abstract: A method, apparatus and system for conveying drill cuttings employing a compressed conveyance gas to induce movement of the non-free flowing drill cuttings in a vessel without employing a non-pneumatic means for causing movement of the drill cuttings in the vessel.

Abstract: An elongate container (7) for the transport of bulk powders is provided along its base with a longitudinally sloping membrane support. A gas permeable membrane (11) is mounted on the support and the support is itself unsupported relative to the container between its longitudinal and transverse ends. A method of conveying bulk powder using such a container is also described.

Abstract: A method and apparatus for transporting oil drill cuttings using a vessel having a lower conical portion where the cone has an angle which provides for mass flow of the drill cuttings when there is an application of compressed air on the surface of the drill cuttings in the vessel.

Abstract: A method, apparatus and system for conveying drill cuttings employing a compressed conveyance gas to induce movement of the non-free flowing drill cuttings in a vessel without employing a non-pneumatic means for causing movement of the drill cuttings in the vessel.

Abstract: A method and apparatus for transporting oil drill cuttings using a vessel having a lower conical portion where the cone has an angle which provides for mass flow of the drill cuttings when there is an application of compressed air on the surface of the drill cuttings in the vessel.

Abstract: A method and apparatus for transporting non free-flowing pastes using a vessel having a lower conical portion where the cone has an angle which provides for mass flow of the non free-flowing pastes when there is an application of compressed air on the surface of the non free-flowing pastes in the vessel.