PRECIP 
NEWSLETTER 

Hamon Research Cottrell (HR-C) has recently introduced two new improvements in the electrostatic precipitator rebuild arena. The first is modular SMPS (switch mode power supplies). These use a jointly-engineered design with NWL, which can eliminate the need for a control house atop electrostatic precipitators. The skid-mounted SMPS module includes Conventional T/R Controls, MCC, SW and SMPS, which are factory installed, pre-wired and shipped as a complete unit. Job site installation labor savings are reported to exceed 40 percent as the entire pre-assembled skid need only be lifted into position. HR-C has installed SMPS at Detroit Edison, Mirant Dickerson and PH Glatfelter.

The second improvement for ESP rebuilds is shop-assembled high voltage frames and modular collecting plates and discharge electrodes. Significant savings at the job site are possible because shop-assembled components can be installed by ironworkers versus electricians and boilermarkers.

HR-C (and its predecessors):

·         have built over 5000 precipitators since 1907

·         have rebuilt over 1500 precipitators

·         built the first utility power boiler

·         invented the OPZEL collecting plate

·         invented the MIGI rapper

·         opened the 1^st fluid dynamics lab in the industry

·         installed over 4000 MW of new utility ESPs since 1999.

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