B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 17/02 (2006.01) B03B 5/00 (2006.01) B03B 9/06 (2006.01) B07B 1/20 (2006.01)
Patent
CA 2138011
A plant for the separation at high temperatures of contaminants (B) from plastic material (A) in small pieces or in leaves, comprising at least one stage (2) for the separation of contaminants (B), which in turn comprises a centrifugal separator device (8) designed to separate an input flow (A + B + C) consisting of plastic material (A) in small pieces or in leaves, with contaminants (B) and a conveying fluid comprising water and steam (C), into a mai n flow (A + C) of said material and said conveying fluid and into a secondary flow (B + C) of said contaminants and said conveying fluid. Said separation stage (2) comprises, moreover, a cyclone (9) designed to receive in input said secondary flow and to divide it into a discharge flow af said contaminants and wa- ter (B + C') and into a flow of steam (C") which is conveyed towards the inlet (18) of the separation device (8) of the same stage (2) and/or of the previous stages. Moreover a final cyclone (3) is preferably provided, connected in cascade to all the possible stages of separation (2) of the plant (1) to receive in input the main flow (A + C) in output at the final stage (2) and separate it in turn into a flow of material and water (A + C') conveyed to the outside of the plant, and into a flow of steam (C') conveyed tow- ards the inlet (18) of the separation device (8) of at least one of the stages (2) which precede it.
Marks & Clerk
Sorema S.r.l.
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