The present invention relates to a processing system (0) intended to dehydrate food waste (4) comprising at least one device (200) for storing and heating food waste (4) comprising at least one device for stirring the food waste (4), a direct contact heat exchange condenser (34) comprising an openin
The present invention relates to a processing system (0) intended to dehydrate food waste (4) comprising at least one device (200) for storing and heating food waste (4) comprising at least one device for stirring the food waste (4), a direct contact heat exchange condenser (34) comprising an opening (37) for extracting incondensable gases from the condenser (34), a first pipe (3) allowing direct communication between the storage device (200) and the condenser (34) to allow the passage of gaseous effluents (22) particularly comprising steam, produced by the heating of said food waste (4) in the waste storage and heating device (200), to the direct contact heat exchange condenser (34), where the steam condenses in contact with a shower of the coolant liquid. The recycling of heat between the condenser (34) and the device (200) for storing and heating food waste is provided by a heat pump (6).
대표청구항▼
1. A treatment system (0) intended for dehydrating food waste (4) including at least: a storage and heating device (200) for food waste (4) comprising at least one device for stirring food waste (4) in a container (2),a condenser (34),a first pipe (3) allowing direct communication between the storag
1. A treatment system (0) intended for dehydrating food waste (4) including at least: a storage and heating device (200) for food waste (4) comprising at least one device for stirring food waste (4) in a container (2),a condenser (34),a first pipe (3) allowing direct communication between the storage device (200) and the condenser (34) to allow passage of gaseous effluents (22) comprising steam produced in the storage and heating device (200) by the food waste (4) toward the condenser (34) where the steam contained in the gaseous effluents are condensed,the inside of the container (2), the inside of the enclosure (35) of the condenser (34) and the inside of the first pipe (3) are maintained under primary vacuum, wherein the condenser (34) is a direct contact heat exchange condenser (34) having an enclosure (35) comprising an incondensable gas extraction opening (37) in the upper portion of the condenser (34) and a condensate extraction opening (36) in the lower portion of the condenser (34). 2. The system (0) according to claim 1, wherein the direct contact heat exchange condenser (34) is a jet condenser (34) comprising the enclosure (35) having a longitudinal axis (28) perpendicular to the ground (30), the enclosure (35) comprising, in the upper portion of the enclosure (35), a shower device (33) comprising at least one cooling liquid (16) entry opening allowing the cooling liquid (16) to fall as a shower (13) into the enclosure (35), from the upper portion toward the lower portion, the condensate composed of cooling liquid (16) added with steam condensed by the cooling liquid (16) being extracted through the condensate extraction opening, the first pipe (3) leading into the lower portion of the enclosure (35). 3. The system (0) according to claim 2, wherein the incondensable gas extraction opening (37) of the condenser (34) is connected to an incondensable extraction pump (9) and the condensate extraction opening (36) being connected to a condensate extraction pump (10). 4. The system (0) according to claim 2, wherein the shower device (33) communicates with the lower portion of the enclosure (35) of the condenser (34) by a second pipe (5), a portion of the condensate being extracted from the lower portion of the enclosure (35) by a condensate recirculation pump (100) to be led to the shower device (33) by the second pipe (5). 5. The system (0) according to claim 1, wherein the waste storage and heating device (200) further comprises: a container (2) intended to contain the food waste (4), the shape of which is partly (2a) a cylindrical sector,a heating device (11) positioned against the wall of the container (2) and intended to heat the food waste (4) contained in the container (2). 6. The system (0) according to claim 5, wherein the stirring device comprises at least: a rotating shaft (17) driven by a motor (18) and parallel to the longitudinal axis (32) of the cylindrical sector portion (2a) of the container (2),a plurality of stems (20) of which one end is attached to the rotating shaft (17),a plurality of blades (19) attached to the other end of the stems (20) so that the assembly consisting of one stem (20) and one blade (19) extends from the rotating shaft (17) to the vicinity of the wall of the container (2) shaped as a cylindrical sector. 7. The system (0) according to claim 6, wherein the longitudinal axis of the container (2) is inclined with respect to the ground (30) and in thateach blade (19) is contained in a plane (38) forming an angle δ with the plane (39) comprising the rotating shaft (17) and the stem (20) to which the blade (19) is attached, the orientation of the angle δ being selected so that the food waste (4) intended to be treated in the system (0) are lifted in the direction of the end of the rotating shaft (17) farthest from the ground (30) during treatment of the food waste (4). 8. The system (0) according to claim 1, wherein the heating device comprises heating plates (11a) applied to the outer surface of the container (2), the heating plates being controlled in temperature by a controller. 9. The system (0) according to claim 1, wherein the heating device further comprises a heat pump (6) whereof one specific condenser (11b) is attached to the container (2) and whereof a specific evaporator (7, 8) is attached to the enclosure (35) of the condenser (34), and/or to the second pipe (5) for recovering (23, 24) heat from the enclosure (35) of the condenser (34) and/or from the second pipe (5) to restore the heat (25b) to the container (2). 10. The system (0) according to claim 1, wherein the heating device further comprises a heat pump (6) whereof a specific condenser (11b) is attached to the container (2) and whereof a specific evaporator (7, 8) is inside the enclosure (35) of the condenser (34). 11. The system (0) according to claim 1, wherein the portion (3a) of the first pipe (3) closest to the enclosure (35) of the condenser (34) forms an acute angle α with the longitudinal axis (28) of the enclosure (35). 12. The system (0) according to claim 1, wherein the primary vacuum is maintained by the incondensable gas extraction pump (9) of the condenser (34) and/or by the condensate extraction pump (10). 13. The system (0) according to claim 1, wherein the system (0) further comprises a moisture sensor (230) attached inside the container (2), the sensor being connected to a control means, the control means being connected to the motor (18) configured to drive the rotating shaft (17), the extraction and/or recirculation pump(s) (9, 10, 100), the heating device (11a) and the heat pump (6), the control means configured to stop the motor (18) of the rotating shaft (17), the heating device (11a), the extraction and/or recirculation pump(s) (9, 10, 100) and the heat pump (6) when the sensor detects a level of moisture in the food waste (4) less than a minimum value of the moisture level in the container (2). 14. The system (0) according to claim 1, wherein the system (0) comprises at least one pressure sensor (231) in the container (2) and/or in the enclosure (35) of the condenser (34), the sensor(s) (231) being connected to the control means, the control means being connected to at least one extraction pump, the control means configured to control the operation of the extraction pump(s) (9, 10) to maintain the primary vacuum of the system (0) and/or to discharge the condensates (16). 15. The system (0) according claim 1, wherein the container (2) has a discharge opening (400) in the portion closest to the ground (30). 16. The system (0) according to claim 1, wherein cutters are attached to the rotating shaft (17).
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이 특허에 인용된 특허 (2)
Krüger, Günter, Installation for drying organic matter.
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