Engineering

Redevelopment of the electrostatic filter

Redevelopment of the electrostatic filter

We are engaged in studies and consulting focusing on the conversion of electrostatic precipitators to more efficient fabric filters in various industrial plants such as (power plants, heating plants, foundries, cement plants, etc.). We process studies for small local sources up to large industrial units in the range of flue gas flows from 20,000 – 3,000,000 m3 / h.

The study is prepared by our engineering division, see the contact.

Basic steps in filter reconstruction

In practice, there are many ways to increase the separation efficiency of electrostatic precipitators (EP) and flue gas cleaning in general. Among one of the possible methods of increasing the efficiency of EP, it is possible to use the extension of existing EP and the completion of the so-called other sections, in which the finest dust fractions are separated. This technical solution requires considerable space requirements on the technology at the installation site. Another very common method of increasing EP efficiency is to replace existing high-frequency power supplies with more efficient ones. Of course, these methods can be combined. At present, the most effective method seems to be the complete replacement of existing EPs with new fabric filters, which is very expensive or it is possible to convert existing EPs to fabric filters with the greatest possible use of existing EP parts (cabinet, supporting structure, inlet and outlet part, etc.).

The basic procedures for converting an EP filter to a fabric filter include:

 
  • Removal of complete internal active parts of all EP, cancellation of components of electrical supply of EP sections (ie all HV sources)
  • The existing EP cabinets will be fitted with a built-in fabric filter with the necessary modifications to the construction of the cabinets and flue pipes.
  • Construction of a compressed air compressor station for regeneration of fabric filter hoses,
  • Inspection and possible replacement of existing flue gas fans due to insufficient dimensions for the required flue gas pressure.
  • Interference with pneumatic transport elements under individual dumps of existing EP due to a change in the proportions of the captured amount of  solid pollutants.