Abstract: An ultrasound crystallization device includes a tubular crystallization reactor (102) for conducting process fluid containing substance to be crystallized, an ultrasound source (104) for radiating ultrasound to the tubular crystallization reactor, and a temperature-control structure (105) for controlling the temperature of the process fluid with the aid of temperature-control fluid. The tubular crystallization reactor is shaped to conduct the process fluid to flow around the ultrasound source, and the temperature-control structure comprises a flow-guide structure (106) for guiding at least a part of the temperature-control fluid to flow around the ultrasound source. The flow-guide structure improves the accuracy of the temperature control of the process fluid and also the ability of the temperature control to react to changes.

Abstract: A method for separating organic solvent(s) from an aqueous process stream including organic solvent(s), includes passing the aqueous stream including organic solvent(s) through a granular bed including glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm.

Abstract: An ultrasound crystallization device comprises a tubular crystallization reactor (102) for conducting process fluid containing substance to be crystallized, an ultrasound source (104) for radiating ultrasound to the tubular crystallization reactor, and a temperature-control structure (105) for controlling the temperature of the process fluid with the aid of temperature-control fluid. The tubular crystallization reactor is shaped to conduct the process fluid to flow around the ultrasound source, and the temperature-control structure comprises a flow-guide structure (106) for guiding at least a part of the temperature-control fluid to flow around the ultrasound source. The flow-guide structure improves the accuracy of the temperature control of the process fluid and also the ability of the temperature control to react to changes.

Abstract: A system for determining a leak flow of a vacuum system of a vacuum filter includes a controller for adjusting speed of a filtration media of the vacuum filter and/or for adjusting supply rate of slurry onto the filtration media. The system includes a pressure sensor for determining pressure difference affecting over the filtration media and a layer of the slurry carried by the filtration media, and a device for determining flow rate through a vacuum pump that maintains the pressure difference. The speed of the filtration media and/or the supply rate of the slurry is/are adjusted so that the slurry is fully saturated by liquid along a whole filtration area affected by the pressure difference. Thus, fluid flow through the layer of the slurry is negligible and therefore the determined flow rate is indicative of the leak flow of the vacuum system.

Abstract: A method for separating organic solvent(s) from an aqueous process stream including organic solvent(s), includes passing the aqueous stream including organic solvent(s) through a granular bed including glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm.