Patent ID: 8033327

Claim:
A device for extracting heat from gas, or combustion gas, containing dust and/or condensable substances, for recovering condensates, the device comprising: at least one heat exchanger including at least one gas inlet; a cooling jacket surrounding a chamber having a symmetry of revolution about an axis, the cooling jacket being an outer tube, an opening provided in the heat exchanger to pass an optimal mixture of surfactant into the at least one heat exchanger, the surfactant being configured to treat internal surfaces of the the at least one heat exchanger, a plurality of internal tubes located inside the chamber, the plurality of internal tubes each bounding a treatment chamber, each of the plurality of internal tubes being provided with a coaxially arranged helicoid screw, the helicoid screw being rotatable by a speed of the gas or of the combustion gas, and a stream of cooling fluid flowing between the plurality of internal tubes, the cooling fluid being introduced via a line and discharged; and a conveyor that conveys the surfactant on an upstream side of the device and a collector that collects the surfactant on a downstream side of the device.