* a first configuration in which the process fluid can pass through said first dehumidifier (3) and not through said second dehumidifier (4) and the regenerating fluid can pass through said second dehumidifier (4) and not through said first dehumidifier (3) Dehumidification apparatus, in particular for implementing a method according to any one of the preceding claims, said apparatus comprising:Īt least one container (2) for dehumidifying incoherent plastic material, said container (2) comprising at least one inlet (2a) and at least one outlet (2b) for process fluid Īt least one first dehumidifier (3) and at least one second dehumidifier (4) arranged in parallel to dehumidify the process fluid Ĭircuit means for circulating the process fluid in said first and second dehumidifiers (3 and 4) and a regenerating fluid for regenerating said first and second dehumidifiers (3 and 4) įlow distribution means arranged in said circuit means and controlled so as to assume at least the following configurations: Method according to any one of the preceding claims, wherein said steps b) to d) are repeated by inverting the flows between the first and the second dehumidifier (3 and 4), whereby said method comprises the steps of:ī’) withdrawing wet process fluid from said container (2) and sending it to said second dehumidifier (4) and then returning the process fluid dehumidified by said second dehumidifier (4) to said container (2) Ĭ’) after said step b’), regenerating said second dehumidifier (4) by heating with hot regenerating fluid ĭ’) after said step c’), withdrawing wet process fluid from said container (2) and sending a part thereof to said second dehumidifier (4) to cool it and another part thereof to said first dehumidifier (3).ĥ. Method according to claim 1 or 2, wherein, during at least a part of said step d), a third part of wet process fluid withdrawn from said container (2) returns to said container (2) without passing through said first dehumidifier (3), or through said second dehumidifier (4) said third part of process fluid, before returning to said container (2), being optionally mixed with process fluid exiting said first dehumidifier (3) and process fluid exiting said second dehumidifier (4) a flow (M3) of said third part of wet process fluid being, in particular, regulated on the basis of a chemical-physical parameter, which optionally comprises the temperature and/or the dewpoint, of the mixture of said third part with process fluid exiting said first dehumidifier (3) and process fluid exiting said second dehumidifier (4).Ĥ. Method according to claim 1, comprising, after said step b), a step of withdrawing wet process fluid from said container (2) and sending it to said second dehumidifier (4) and then returning the process fluid dehumidified by said second dehumidifier (4) to said container (2).ģ. Wherein a flow (Ml) of said first part of process fluid and/or a flow (M2) of said second part of process fluid is regulated according to a chemical-physical parameter of said mixture, said chemical-physical parameter comprising, in particular, the temperature and/or the dewpoint or other parameter indicating the amount of moisture.Ģ. Dehumidification method, comprising the steps of:Ī) providing a container (2) for dehumidifying incoherent plastic material by process fluid ī) withdrawing wet process fluid from said container (2) and sending it to a first dehumidifier (3) and then returning the dehumidified process fluid from said first dehumidifier (3) to said container (2) Ĭ) after said step b), regenerating said first dehumidifier (3) by heating with hot regenerating fluid ĭ) after said step c), withdrawing wet process fluid from said container (2) and sending a first part thereof to said first dehumidifier (3) to cool it and a second part thereof to a second dehumidifier (4), wherein, during at least a part of said step d), process fluid exiting said first dehumidifier (3) and process fluid exiting said second dehumidifier (4) are mixed and the mixture is sent to said container (2)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |