After failure to comply with the Clean Air Act of our Water Scrubber, our mill was advised by DOE to replace it with a 2 fields ESP. But I was made aware that some mills installed with single field ESP could meet and comply with the Act. So, I am rather confused about the present status of DOE’s stand on the new installation of ESP. My questions are:
Is it true that DOE requires all new ESP to be 2 fields? If so, why?
What are the criteria for selection of 1 field or 2 fields ESP for a mill?
Some mills share a common ESP for multiple boilers. Will DOE approve that configuration? What if this ESP broke down, both boilers also cannot operate.
Since some mills installed with single field ESP had proven that it works, why DOE or mills are going for the 2 fields ESP?
I understand ESP is NOT all almighty. What are the operating factors/conditions that could possibly or likely affect or result in non-performance or non-compliance?
The importance and sensitivity of Steam/Power/Fuel Balance of a mill has quite often been neglected. How will this affect the satisfactory performance of ESP?
The only advantages i can see is, 2 fields ESP works as a duplex unit for ESP. If either field brekdown, the ESP still can work, may be cannot meet the requirements, boilerman or engineer may need to take some action, reduce boiler load.. etc. If single field ESP breakdown, we must stop the operation immediately.
I have one more question to ask our PalmIngenieurs on ESP. What are the advantages of 2-fields ESP over that of a single field ESP after all they are sized the same. Thank you.