The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 1986
Filed:
Dec. 13, 1984
Peter W Dietz, Schenectady, NY (US);
Philip H Peters, Greenwich, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
In order to mitigate the problem of back-corona discharge in electrostatic precipitators, method and apparatus are provided for energizing the precipitator electrodes with repeated bursts of high voltage electrical pulses, superimposed upon a direct current voltage level. Additionally, the voltage of the pulses in a single burst is increased from each pulse to the next pulse during the time period that the pulse burst is applied. The effect of the ramping of the pulse burst voltage is to increase the average electric field and ion density during the pulse burst. The result is substantially higher particle charging which leads to improved particle charging collection efficiency. Moreover, in addition to eliminating the back-corona discharge problem which particularly occurs in the collection of high resistivity dust particles, the present method and apparatus for precipitator energization achieves the same advantages as so-called board pulse powering precipitator methods, without, however, the concomitant circuit cost associated with high voltage and high power switching devices.