Boots – shoes – and leggings
Patent
1987-06-02
1989-03-28
Ruggiero, Joseph
Boots, shoes, and leggings
364172, 364503, 432 17, 432 45, G06F 1546, F27B 1500
Patent
active
048170089
ABSTRACT:
To enable the operation of a cement manufacturing installation to be controlled by taking into account changes in essential operating parameters as soon as they appear, the quantity of the total theoretical heat (QT) required to convert the raw material to clinker is calculated by applying correcting coefficients to the quantity of a predetermined total nominal heat (QTO) corresponding to nominal values imposed by parameters (K1, K2, . . . Kn) characteristic of the raw material, of the fuel, of the clinker and of the operation of the installation, the correcting coefficients taking into account differences between the nominal values and measured values of said parameters. The quantity of the theoretical heat (QF) to be supplied to the kiln is calculated by deducting the quantity of heat (QP) supplied to the precalcination chamber from the quantity of total theoretical heat (QT). A consigned value (FF1) of flow of the fuel supplied to the kiln is calculated on the basis of the quantity of the theoretical heat (QF) to be supplied to the kiln, and the actual consigned value (FFO) of the flow control is progressively modified until it has reached the calculated consigned value (FF1) of fuel flow, the progress of variations imposed on the consigned value depending on the conditions of thermal treatment of the raw material and of its dwell time in the kiln. These steps are periodically repeated at relatively close intervals of time.
REFERENCES:
patent: 3566091 (1971-02-01), Bay
patent: 3595544 (1971-07-01), Curtis et al.
patent: 3888621 (1975-06-01), Williams
patent: 4022569 (1977-05-01), Farago et al.
patent: 4430719 (1984-02-01), Pearson
patent: 4716532 (1987-12-01), Benoit et al.
Benoit Philippe
Chielens Alain
Osselin Florence
Pinoncely Andre
Fives-Cail Babcock
Kelman Kurt
Ruggiero Joseph
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