Waste drying
AssigneeRwe Generation Nl B.V.
InventorsJohannes Theodorus Gerardus Marie Eurlings, Carlo Jacobus Johannes Maria DE BEST
Life of this patent
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Abstract
According to the present invention waste 7 is dried by applying the waste 7 to a floor 4 comprising several floor segments 34, 44, 46 and by conveying the waste 7 by a push floor mechanism in which only a part of the floor segments 34, 44, 46 is moved at a time in a direction of movement 8 or a counter direction 61. The energy for drying the waste 7 is provided by warm air 11 through openings 38 in the floor segments 34, 44, 46 from a pressure chamber 3 through the floor 4 into the waste 7 and through the waste 7.
Claims15
A method for drying waste (7), comprising steps of:
- applying waste (7) into a waste chamber (2) on an inlet end (6) of a floor (4) which comprises at least two floor segments (34, 44, 46);
- providing warm air (11) of a temperature of more than 70° C. to a pressure chamber (3) beneath the floor (4), with a pressure being above the pressure in the waste chamber (2), so that the warm air (11) is passing through openings (38) in the floor (4) into the waste chamber (2) and through the waste (7);
- conveying the waste (7) in a direction of movement (8) from the inlet end (6) to an outlet end (12) of the floor (4) by moving individual floor segments (34, 44, 46) into the direction of movement (8) and in a counter direction (61) being opposite the direction of movement (8) for a predetermined amount, respectively;
- and
- conveying waste (7) having fallen from the outlet end (12) of the floor (4) out of the waste chamber (2);
- wherein:
- the floor defines a plane (41) in which the floor (4) extends, and the at least two floor segments (34, 44, 46) of the floor (4) are arranged at the same height such that a respective top surface of each of the at least two floor segments (34, 44, 46) forms a respective part of the plane (41);
- the at least two floor segments (34, 44, 46) stay in the plane (41) when conveying the waste (7) in the direction of movement (8) from the inlet end (6) to the outlet end (12) of the floor (4) by moving individual floor segments (34, 44, 46) into the direction of movement (8) and in the counter direction (61) being opposite the direction of movement (8) for the predetermined amount, respectively.
A dryer (1) for drying waste (7), comprising
- a waste chamber (2) and a pressure chamber (3), said waste chamber (2) being separated from the pressure chamber (3) by a floor (4) for carrying the waste (7), wherein said floor (4) defines a plane (41) in which the floor (4) extends,
- an inlet (5) for applying waste (7) onto an inlet end (6) of the floor (4) and an outlet (9) for removing waste (7) from on outlet end (12) of the floor (4) defining a direction of movement (8) in the plane (41) from the inlet end (6) to the outlet end (12),
- wherein the floor (4) comprises at least two floor segments (34, 44, 46), each floor segment (34, 44, 46) being movable independent of at least one other floor segment (34, 44, 46) in the plane (41) in the direction of movement (8) and against the direction of movement (8),
- wherein the floor segments (34, 44, 46) comprise openings (38) connecting the pressure chamber (3) with the waste chamber (2),
- wherein the pressure chamber (3) is providable with warm air at a pressure being higher than the pressure in the waste chamber (2);
- wherein the at least two floor segments (34, 44, 46) are arranged at the same height such that a respective top surface of each of the at least two floor segments (34, 44, 46) forms a respective part of the plane (41).
Dependencies are inferred from the claim text.