|
 |
The conventional
filter for solid-liquid filtration is very cumbersome to
operate and to maintain. The filter cloth has to be scrubbed
for cleaning. The entire assembly will have to be opened out
every time for washing, resulting in the surrounding area
becoming dirty. The operation and maintenance of this unit
is labour oriented. Also the scrubbing of cloth every time
results in reducing the quality of cloth (increase in slot
opening). All has lead to the design of a Candle Filter
wherein the cleaning operation is done in a closed circuit.
Candle Filter is basically a polishing filter working under
pressure. The filter works in surface filtration & Clean in
Place filtration principle. The filter consisting of a
number of candles arranged vertically inside a pressure
vessel. Each candle consists of six nos. of slotted tubes
arranged above a seamless tube with top & bottom
compartment. Each candle is covered with filter cloth. The
special contour of the candle ensures excellent backwashing/
blow back for cleaning the candle.
|
The candle sizes have been
standardized for the purpose of ease in maintenance. However,
depending upon the flow rate of the filtrate, the number of
candles are increased or decreased to give the desired results.
The Candle Filter has proved to be the best replacement for the
Sparkler Filter.
It is ideally suited for filtration, cake washing, draining &
cake discharge. It is suitable for both direct filtration &
precoat filtration. Using the candle filter unfiltered cake can
be collected as a slurry discharge or as dry discharge based on
the characteristic of the liquid & solid.
FEATURES & ADVANTAGES
-
More cake holding capacity for
the same area compared to other pressure filters.
-
Cleaner surroundings due to
clean in place filtration.
-
Complete operator safety as all
filtration operations carried out in closed conditions.
-
Least down time of the filter
due to backwashing.
-
Longer life of the filter
element because of in situ cleaning.
-
Complete automation possibility.
-
No moving parts. Therefore less
maintenance and reduced spare parts requirements.
APPLICATIONS
-
Removal of activated carbon
-
Removal of bleaching earths
-
Recovery of catalysts
-
Recovery of metals & metallic
oxides
-
Filtration of urea solution
-
Filtration of glycerin water
-
Lubricating oils
-
Sugar solutions
-
Paints and pigments
-
Bulk drug solutions
-
Effluent & waste water
-
Solvents
-
Brine Polishing
-
Demercurisation of Caustic
|
