Abstract: Organic contaminants of solid particles, especially oil in drill cuttings, are removed by passing the contaminated particles into a processing chamber, generating a circumferentially directed flow of fluid within the chamber to cause the particles to circulate in the chamber in a turbulent compact band, incinerating the particles and removing them substantially free from organic contaminants from the chamber.

Abstract: A method of carrying out a process on or with liquid comprises moving a bed of the liquid in a band 28 continuously along an annular path defined in a chamber 12 by passing fluid 38 having both circumferential and vertical components through the bed along the path during the carrying out of the process.

Abstract: For processing matter in a turbulent mass of particulate material, a substantially annular processing region (14; 104; 206) is provided and is preferably in the form of a substantially annular processing chamber having a radially inner wall which includes a waist (38; 122). A flow of fluid and matter to be processed are admitted to the processing region through one or more inlets (28, 46; 108, 124; 214, 220) with the flow of fluid being directed generally circumferentially into the processing region. In the processing region, matter to be processed is embedded in a compact turbulent band of particulate material for processing. Once processing is complete, the processed matter is withdrawn from the processing region, preferably by entrainment in an exhaust flow of the fluid.

Abstract: For processing matter in a turbulent mass of particulate material, a substantially annular processing region (14; 104; 206) is provided and is preferably in the form of a substantially annular processing chamber having a radially inner wall which includes a waist (38; 122). A flow of fluid and matter to be processed are admitted to the processing region through one or more inlets (28, 46; 108, 124; 214, 220) with the flow of fluid being directed generally circumferentially into the processing region. In the processing region, matter to be processed is embedded in a compact turbulent band of particulate material for processing. Once processing is complete, the processed matter is withdrawn from the processing region, preferably by entrainment in an exhaust flow of the fluid.