Ultrasound crystallization device and an ultrasound crystallization system

An ultrasound crystallization system, comprising:

• one or more ultrasound crystallization devices, each comprising an inlet for receiving a flow of process fluid containing substance to be crystallized, a tubular crystallization reactor arranged to conduct the process fluid between the inlet and an outlet of the crystallization device, an ultrasound source for radiating ultrasound to the tubular crystallization reactor, and a temperature-control structure for controlling temperature of the process fluid so that the process fluid is in heat transfer relation with temperature-control fluid;
• and
• a temperature-control system for pumping the temperature-control fluid through the temperature-control structure of each of the one or more ultrasound crystallization devices,
• wherein the tubular crystallization reactor of each of the one or more ultrasound crystallization devices is shaped to conduct the process fluid to flow around the ultrasound source of the ultrasound crystallization device so that a flow path of the process fluid is circulated around the ultrasound source, and
• wherein the temperature-control structure of each of the one or more ultrasound crystallization devices comprises a flow-guide structure for guiding at least a part of the temperature-control fluid to flow around the ultrasound source so that a flow path of the at least part of the temperature-control fluid is circulated around the ultrasound source.

An ultrasound crystallization device, comprising:

• an inlet for receiving a flow of process fluid containing substance to be crystallized;
• a tubular crystallization reactor arranged to conduct the process fluid between the inlet and an outlet of the crystallization device;
• an ultrasound source for radiating ultrasound to the tubular crystallization reactor;
• and
• a temperature-control structure for controlling temperature of the process fluid so that the process fluid is in heat transfer relation with temperature-control fluid,
• wherein the tubular crystallization reactor is shaped to conduct the process fluid to flow around the ultrasound source so that a flow path of the process fluid is circulated around the ultrasound source,
• wherein the temperature-control structure comprises a flow-guide structure for guiding at least a part of the temperature-control fluid to flow around the ultrasound source so that a flow path of the at least part of the temperature-control fluid is circulated around the ultrasound source along a helical path surrounding the ultrasound source, and
• wherein the temperature-control structure further comprises a container encompassing the tubular crystallization reactor and the ultrasound source, and the flow-guide structure comprises a helical guide-plate attached to an inner wall of the container and surrounding the tubular crystallization reactor.