Control of an asphalt mixing plant
OwnerMichael KLARER, Lukas BOESIGERinventors
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Abstract
An asphalt mixing plant (700) includes a first drying drum (11) for drying and heating a first aggregate to a first aggregate temperature. The first drying drum (11) includes a first burner (31) and a first controller (41) configured to control by a first control loop (51) the first aggregate temperature of the first aggregate. The asphalt mixing plant (700) further includes a second controller (42) configured to control by a second control loop (52) a first raw gas temperature of a first raw gas of the first drying drum (11). The first controller (41) and the second controller (42) are configured to operate independently from each other. Further aspects relate to a corresponding method and a corresponding computer program product.
Claims16
An asphalt mixing plant, comprising
- a first drying drum for drying and heating a first aggregate to a first aggregate temperature, the first drying drum comprising a first burner;
- a first controller configured to control by a first control loop the first aggregate temperature of the first aggregate by controlling the burner load of the first burner;
- and
- a second controller configured to control by a second control loop a first raw gas temperature of a first raw gas of the first drying drum;
- wherein
- the first drying drum is configured to rotate at a first rotational speed;
- the second controller is configured to control the first raw gas temperature of the first raw gas exiting the first drying drum by controlling the first rotational speed of the first drying drum;
- and
- the first controller and the second controller are configured to operate independently from each other.
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A method for operating an asphalt mixing plant, the asphalt mixing plant comprising a first drying drum comprising a first burner, a first controller and a second controller, the method comprising
- drying and heating, by the first drying drum, a first aggregate to a first aggregate temperature, the first drying drum comprising a first burner;
- controlling, by the first controller, the first aggregate temperature of the first aggregate by controlling the burner load of the first burner;
- and
- controlling, by the second controller, a first raw gas temperature of a first raw gas of the first drying drum;
- wherein the controlling by the first controller and the controlling by the second controller is performed independently from each other via a separate first control loop and a separate second control loop respectively.
A computer program product for operating a control unit of an asphalt mixing plant, the asphalt mixing plant comprising a first drying drum for drying and heating a first aggregate to a first aggregate temperature, the first drying drum comprising a first burner;
- the control unit comprising a first controller and a second controller, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by the control unit to cause the control unit to perform a method comprising
- controlling, by the first controller, the first aggregate temperature of the first aggregate by controlling the burner load of the first burner;
- and
- controlling, by the second controller, a first raw gas temperature of a first raw gas of the first drying drum;
- wherein the controlling by the first controller and the controlling by the second controller is performed independently from each other via a separate first control loop and a separate second control loop respectively.
Dependencies are inferred from the claim text.