Method of optimizing the collection efficiency of an electrostatic precipitator

US4416671A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Wenzel Von Jordan · Darmstadt, DE
• Franz Neulinger · Langen (Hessen), DE

Key dates

• Filing date: Mar 5, 1982
• Grant date: Nov 22, 1983
• Expiry date: Mar 5, 2002

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03C3/014
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of optimizing the collection efficiency of a dry-process electrostatic precipitator which is preceded by an evaporative cooler, wherein liquid is sprayed into the evaporative cooler at a rate which is controllable to maintain a desired temperature includes the steps of intermittently measuring the dew points of acid separately and setting the desired temperature T.sub.c in dependence on the measured dew point of acid and a preselected margin of safety .DELTA.T, in accordance with T.sub.c =T.sub.s +.DELTA.T, determining a desired input current I.sub.c for the electrostatic precipitator at T.sub.c and storing I.sub.c, and continuously calculating the deviations of the actual input current I of the precipitator from the desired input current I.sub.c and initiating the measurement of the dew point T.sub.s of acid in response to a predetermined deviation to update the desired temperature T.sub.c.