System for controlling the voltage of an electrofilter

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55105, 323241, 323903, 364148, G05B 1302, B03C 368

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active

044320612

ABSTRACT:
A system for controlling the voltage of an electrofilter of the type which, after a voltage breakdown, substantially reduces the magnitude of the electrofilter voltage. After a predetermined deionization time, the filter voltage is raised to a new level which is lower than the filter voltage at which the initial voltage breakdown occurred, by a predetermined amount. The filter voltage is subsequently raised in accordance with a predetermined voltage-time function until a further voltage breakdown occurs. The electrofilter voltage is controlled by a microcomputer system in accordance with stored control parameter values. The stored control parameter values are advantageously recalled to control the electrofilter voltage in response to the operating state of a plant in which the electrofilter is employed. In plants wherein a plurality of electrofilters are employed, each such electrofilter is controlled by an associated microcomputer system, the plural microcomputer systems being controlled by a central pilot computer. The central pilot computer of the plant computes strategies which enhance the energy efficiency of the overall electrofilter purification system.

REFERENCES:
patent: 3622839 (1971-11-01), Abrams et al.
patent: 3893828 (1975-07-01), Archer
patent: 3959715 (1976-05-01), Canning
patent: 4152124 (1979-05-01), Davis
patent: 4160202 (1979-07-01), James et al.
patent: 4267502 (1981-05-01), Reese et al.
patent: 4290003 (1981-09-01), Lanese
patent: 4326860 (1982-04-01), Laugesen
patent: 4354152 (1982-10-01), Herklotz et al.
patent: 4354860 (1982-10-01), Herklotz et al.
Siemens-Zeitschrift, 1971, No. 9, pp. 567-572.
Goller et al., Elektrofiltersteuering mit direkter Durchbruchserfassung.

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