FIELD OF INVENTION
The invention relates to an improved casing structure for the electrostatic v
precipitators.
BACKGROUND OF THE INVENTION
The Electrostatic Precipitator (ESP) is a pollution control equipment widely used
for collecting dust particles from flue gas exhausted by thermal power plants,
cement plants, steel plants and glass plants etc. More particularly this invention
relates to use of profiled plates for casing structure of electrostatic Precipitator.
The ESP casing wall is designed to withstand the pressure of flue gas and wind
load. The span of the existing casing wall generally ranges from 4.5M to 7.5M
per field. The casing wall is normally fabricated from plain MS sheet of
4mm/5mm/6mm thickness with adequate stiffening both vertically & horizontally.
The stiffeners weight is almost half the casing weight. Such a prior art casing
structure further becomes too costly.
OBJECTS OF THE INVENTION
It is therefore an object of the invention to propose an improved casing structure
for the ESPs, which eliminates the provisions of vertical stiffeners for stiffening '
the wall of the casing structure.
Another object of the invention to propose an improved casing structure for the
ESPs, which is of reduced-weight.

A further object of the invention to propose an improved casing structure for the
ESPs, which substantially reduces the cost and cycle time for fabrication of the
casing structure.
SUMMARY OF THE INVENTION
The inventors developed the concept of the improved casing structure of the
invention based on the available diagonal or corrugation for the large ESP-
casings. Accordingly, there is provided an improved casing structure for the ESPs
comprising at least profiled plates provided with corrugations such that the
casing structure exhibits adequate stiffening properties such that the casing is
capable to withstand the flue gas pressure including the wind load. Due to
elimination of the vertical stiffeners, the weight, cost, and production cycle time
of the casing structure is substantially reduced.

The inventors developed the concept of the improved casing structure of the
invention based on the available diagonal or corrugation for the large ESP-
casings. Accordingly, there is provided an improved casing structure for the ESPs
comprising at least profiled plates provided with corrugations such that the
casing structure exhibits adequate stiffening properties such that the casing is
capable to withstand the flue gas pressure including the wind load. Due to
elimination of the vertical stiffeners, the weight, cost, and production cycle time
of the casing structure is substantially reduced.