Abstract: The present invention provides a method for separating oily drill fluid from an oily drill cuttings slurry comprising oily drill fluid and drill cuttings. The method comprises destructively modifying at least a portion of the drill cuttings that are contacted by at least one cuttings-reactive chemical thereby disrupting attraction forces between the portion of the drill cuttings and the oily drill fluid and making it easier for mechanical cuttings treatment equipment to separate oily drill fluid from the oily drill cuttings slurry.

Abstract: The present disclosure is a method of removing contaminants from a feed stream comprising said contaminants and process liquid by bringing the feed stream into contact with a heated heating fluid in or in proximity to a separation vessel thereby causing process liquid to vaporise and flow out of the separation vessel as vapour, after which it can be recovered. Embodiments of the method may include using a heavy heating fluid whose density is higher than that of the feed stream and/or vigorously agitating the pool of heating fluid in the separation vessel.

Abstract: The present disclosure is a method of removing water and contaminants from an aqueous feed stream comprising a water soluble process liquid. Embodiments of the method may include splitting the method into stages, vaporising the process liquid by direct contact with a heated heating fluid, removing precipitated contaminants by chemical means, and treating the heating fluid to maintain or enhance its properties.

Abstract: The present invention provides a method for separating oily drill fluid from an oily drill cuttings slurry comprising oily drill fluid and drill cuttings. The method comprises destructively modifying at least a portion of the drill cuttings that are contacted by at least one cuttings-reactive chemical thereby disrupting attraction forces between the portion of the drill cuttings and the oily drill fluid and making it easier for mechanical cuttings treatment equipment to separate oily drill fluid from the oily drill cuttings slurry.

Abstract: The present disclosure is a method of removing contaminants from a feed stream comprising said contaminants and process liquid by bringing the feed stream into contact with a heated heating fluid in or in proximity to a separation vessel thereby causing process liquid to vaporise and flow out of the separation vessel as vapour, after which it can be recovered. Embodiments of the method may include using a heavy heating fluid whose density is higher than that of the feed stream and/or vigorously agitating the pool of heating fluid in the separation vessel.

Abstract: The method relates generally to a filtration and liquid displacement method for separating valuable or harmful liquids, herein termed Process Liquid, from mixtures or slurries that contain such liquids and solid particles. The method employs upflow filtration, operation of SAP Means and use of a Sweep Liquid that has a higher density than the Process Liquid.

Abstract: This invention relates generally to a filtration process and apparatus for separating valuable or harmful process liquids from mixtures or slurries that contain such liquids and solid particles. In particular, the invention relates to a filtration process for separating Process Liquid from a feed slurry that comprises a mixture of the Process Liquid and solid particles, the process employing a Sweep Liquid that is less dense than the Process Liquid.

Abstract: The method relates generally to a filtration and liquid displacement method for separating valuable or harmful liquids, herein termed Process Liquid, from mixtures or slurries that contain such liquids and solid particles. The method employs upflow filtration, operation of SAP Means and use of a Sweep Liquid that has a higher density than the Process Liquid.

Abstract: The present invention provides a method for separating oily drill fluid from an oily drill cuttings slurry comprising oily drill fluid and drill cuttings. The method comprises destructively modifying at least a portion of the drill cuttings that are contacted by at least one cuttings-reactive chemical thereby disrupting attraction forces between the portion of the drill cuttings and the oily drill fluid and making it easier for mechanical cuttings treatment equipment to separate oily drill fluid from the oily drill cuttings slurry.

Abstract: This invention relates generally to a filtration process and apparatus for separating valuable or harmful process liquids from mixtures or slurries that contain such liquids and solid particles. In particular, the invention relates to a filtration process for separating Process Liquid from a feed slurry that comprises a mixture of the Process Liquid and solid particles, the process employing a Sweep Liquid that is less dense than the Process Liquid.

Abstract: This invention relates generally to a filtration process and apparatus for separating valuable or harmful process liquids from mixtures or slurries that contain such liquids and solid particles. In particular, the invention relates to a filtration process for separating Process Liquid from a feed slurry that comprises a mixture of the Process Liquid and solid particles, the process employing a Sweep Liquid that is less dense than the Process Liquid.

Abstract: This invention relates generally to a process and an apparatus therefor for recovering valuable or harmful non-aqueous process liquids from mixtures or slurries that contain such liquids and solid particles. In a first aspect there is provided a filtration process for recovering a substantially non-aqueous process liquid from a feed slurry that predominantly comprises a mixture of the process liquid and solid particles, the process employing a sweep liquid that is less dense than the process liquid.

Abstract: This invention relates generally to a process and an apparatus therefor for recovering valuable or harmful water miscible liquids from mixtures such as slurries that contain such liquids and solid particles.

Abstract: The present invention is directed to an enhanced process for separating dissolved and suspended solids from valuable or harmful liquids and more particularly to improving the operational aspects and separation efficiency of treating certain water miscible fluids including those used for oil and gas processing such as glycols, as well as automobile and aircraft fluids, that have become contaminated with dissolved and/or suspended solid matter.

Abstract: The present invention is directed to an enhanced process for separating dissolved and suspended solids from valuable or harmful liquids and more particularly to improving the operational aspects and separation efficiency of treating certain water miscible fluids including those used for oil and gas processing such as glycols, as well as automobile and aircraft fluids, that have become contaminated with dissolved and/or suspended solid matter.

Abstract: This invention relates to a continuous process and an apparatus (1) for removing dissolved and undissolved solids and/or high boiling point liquid contaminants from a mixture of miscible liquids (9). A recycle liquor stream (6) is fed at high velocity through a heat exchanger having a single flow path (12) and the heat added by the heat exchanger is sufficient to vaporize the feed stream (2) when the recycle liquor and feed stream are mixed upon delivery to the separation vessel (3).

Abstract: Electromagnetic machines of the type having circular arrays of permanent magnets arranged on a rotor and a plurality of pole pieces arranged on a stator, requires that a maximum number of pole pieces be arranged around the stator in order to attain maximum utilization of the magnetic flux and to minimize interpole flux leakage. The instant stator of an electromagnetic machine includes a plurality of U-shaped pole pieces, with adjacent ones of the pole pieces opening in opposite radial directions from an axis of the stator. The pole pieces which open radially inwardly are stepped so as to have a relatively thicker portion radially outwardly from the axis and a relatively thinner portion radially inwardly from the axis. Thus, the number of pole pieces that can be arranged around the stator is maximized, as is the utilization of magnetic flux, and interpole flux leakage is minimized.