Reducing Emissions by 12% at a 350MW power plant with Back-Corona Problems
10 February | Castlet
Sector: Industrial
Castlet installed an electrostatic precipitator operator on a 4 x 350MW power plant in Australia.
THE PROBLEM
The customer was looking for a specialist supplier for ESP power supplies who was able to provide state of the art automatic voltage controllers which could deal with the adverse conditions within their existing ESPs, improve particulate collection, and replace the current, obsolescent equipment.
We’re proud to have found a successful solution that not only reduced emissions overall by 12%, but could be done within a matter of weeks.
Castlet Engineering Team
Identifying a solution
Castlet tendered for and won the contract to replace the full complement of 96 AVCs, plus 16 PLCs to collate data from auxiliary equipment, 4 Graphics Computer Management Systems, and all associated communications links to the plant’s data collection systems.
Back-ionisation or back-corona
One of the strengths of the Castlet AVC, (MCSII), was its ability to control or even avoid Back Corona, using specialist Regupulse algorithms. However, variations within the plant process were such that the controllers required an even more dynamic response than that given by these already well-proven algorithms. Our experienced process and development engineers studied the problems and carried out trials on site.
Reducing emissions
The resulting modified system – all investigated, designed, installed and validated within just a matter of weeks – effectively reduced the average base line emissions by some 12%. This was seen to be a very significant improvement, considering the extreme conditions under which the ESP’s were already operating.
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