Electrostatic Precipitator

Electrostatic precipitators are excellent particle removal systems, as long as they are maintained. The electrodes need to be kept in excellent shape and the oil in the transformer rectifier needs to be tested at least every six months. I used to work at a french fry plant that used one on the exhaust of the fryers. When I started there the machine had not been maintained, some of the electrodes were eroded or missing, spray nozzles were clogged and everything was covered with a thick oily residue. The exhaust fan blades were covered with oil and such causing it to be out of balance and wearing out the bearings at an alaming rate. But after six months of working on it and training the operators how to run the CIP system we had it up and running with a 99.7% effeciency rating and 0% downtime.

Access for maintenance is an important factor while designing layout of ESP. This has been often reported by maintenance and inspection staff.

Actually this is a question rather than a reply.We have an ABL -LURGI type of ESP with 10 fields in two passes. We are doing ammonia conditioning too. In our controller we had the option for intermittent charging can somebody tell more practical importance of this. Similarly can somebody tell me how to correct the bowed collecting plates with an in between distance of 150mm. Thanks in advance.