instrutechINSTRUCTION MANUALVacuum leaf filter
VACUUM LEAF FILTER SET UP DESCRIPTION SPECIFICATIONS
INSTALLATION REQUIREMENTS INSTALLATION AND CONNECTIONS PRECAUTIONS
TROUBLE SHOOTING
EXPREMENTATION THEORY OPERATING PROCEDURE SYSTEM CONSTANTS
OBSERVATION TABLE CALCULATIONS
AIM: To study vacuum filtration and to determine specific cake
resistance () and filter medium resistance (Rm).
APPRATUS:
Vacuum filtration unit, stop watch slurry (of known
concentration) measuring cylinder, weighing balance, oven or drier
to dry the cake.
THEORY:The filter leaf consists of a metal frame work for groove
plate over which filter cloth is fixed the slurry to be filter fill
the place along the leaf and force to fall through leaf by applying
vacuum within the filter cake will come out side of leaf (on filter
cloth) and filtrate (clear liquid) passes to the filter discharge
system.
EXPERIMENTAL SET UP:Vacuum filtration unit: Leaf filter consist
of shell of I.S. 226 quality material leaf filtration takes place
in separate vessel with agitator to keep slurry concentration even
during filtration will be provided with suitable filter cloths half
to provide with vacuum gauge unit is nasal along with in vacuum
gauge unit is fabricated out of I.S. 226 material unit is coupled
to a vacuum pump of max 0.5 H.P. drive unit I mounted on table.
Procedure:1. Prepare slurry of x % concentration (5 or 10% ) by
wt. in a given pot. Total volume of slurry should be 4 lit up till
that leaf must be immersed in the slurry.2.
Open valve and close as shown in the diagram. Keep valve 3 off
throughout the experiment. Apply vacuum by vacuum pump. Vacuum can
be adjusted to a definite pressure in inch of indicated by pressure
gauge.
3. Observe, level of filter (level gauge). For rise in level 5,
10, 15, 20, 25 cm. note down time in sec. for every second plot
graph of v 5
From graph determine valve of slope kp and ordinate in intercept
C substitute in form formulae to calculate .4. Remove filter cloth
and scrap the cake deposited on cloth and dry it in oven and then
take its weight. OBSERVATION:1. Total pressure: 254 mm Hg.2.
Diameter of cylinder 5.5 cm3. Volume of filtrate = 415 ml4. area of
cylindrical shell = 0.00237m
OBSERVATION TABLE:Sr. No.Dia. cmHt. cmV= A X h m ---- V V m min
/ V s/m
CALCULATIONS: RESULT:1. Sp. Resistance of cake =
---------------------2. filter medium resistance=
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