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ABOUT THE COMPANY
Company the ‘SRF’ was established in the 1979 by the Sh. Bharat ram , chairman & founder of this company . And now a days Mr. arun bharat ram is the chairman of this SRF group. Main business of the company is the refrigent gases.
Address:Bhiwadi, Rajasthan75 Kms from New Delhi
MANUFACTURING FACILITIES: Plant Area : 70 Acres/300,000 sq. meters.
Plant Capacities :
Refrigerant 12,500 TPA (Allied Signal)
Chloromethanes 35,000 TPA (Elf Atochem)Hydrofluoric acid: 8,500 TPA
No of Employees : ~ 400.Power Generation : 7.5 MW Captive cogeneration coal captive power
5 MW Diesel Generating sets.plant.
RAW MATERIAL
Spar Consist of- CaF2 : 97.5% SiO2 : 1.0% P2O5 : 1.0% Sulphur : .03% Moisture: 0.1%
Sulphuric Acid
Oleum
LIW(LOSS IN WEIGHT)
LIW is a devices which feed the spar in controlled manner.
Loss in weight ( LIW) system is a package of 3 load cell based weight bin and a variable speed screw conveyor (SC - 151 ) or gravimetric screw .
Maximum limit of LIW = 203kg
Features: 1. Totally automatic 2. No hazard3. Capacites controlled
SPAR DRYER Spar dryer is consist of two coaxial cylinder
having Different radii & Lifter , Flattrs.
Lifter , Flattrs are use to crash and to increase the contactness Of moisture & heat.
Total no. of lifters = 48
Area of the one lifter = 130* 250* 75 mm
Temp. given to dryer = 148 C
Moisture content before dry the spar= 11- 14%
Moisture content afterdry the spar = .05 – 1 %
ROTARY KILN
Kiln is a rotary machine which is used to manufacture the HF.
kiln is made up of carbon steel.
Reation inside the kiln CaF2 + H2SO4 -- 2HF + CaSO4
(Zypsum) It is mounted on the four rollers. Time taken to get te product from rear end
to front end is 2.5 hr.
Zypsum handling is done with the help of conveyers, gear box, silo, control valves.
INSULATION ON THE KILN
Length wise kiln is distributed in four zone, on which a cover sheet is used.
Material of the insulation is Glass wool(white).
Thickness of the insulation on the kiln is upto 100mm and it also depends on the material of the insulation.
Nut and thin rods are welded on the kiln sheet to hold the insulation.
This insulation prevent the 90-95% of hot air heat.
Length : 22.5 meter
Internal dia : 2 meter
Weight : 72 ton
Thickness of the shell : 45 mm from along rear endupto 17.5 meter & after that it
Is 50 mm.
HAG
HAG stands for Hot air generation. It is a large vessel which generates hot air if
temperature 650 degree celcius. the fuel used is LSHS(low sulphure high
speed) and diesel. special bricks are used in the hag which can
bear 1200 degree celius.
CENTRIFUGAL PUMPS
A DEVICE WHICH CONVERTS ENERGY IN TO HEAD & FLOW.
TYPES OF THE PUMP:
1. Centrifugal Pumps.2. Positive Displacement Pumps.3. Multi Impeller Pumps
PUMPS CONSIST OF VARIOUS PART:
IMPELLERCASING LOCATING FLANGE BRACKETBACK PLATE BEARING HOUSINGCOUPLINNG OF MUFF TYPECARTAGEOIL CUP
LUMP BRAKER
Prevent the lump formation , scraps the material
Facilate the flow of gypsum. Flights are used for braking of lump.
Construction : 56 flights are welded on the shaft of dia 300mm.
Meterial of flight is Alloy -20 ( 45% fe , 24 % Ni , 20% Cr)
DISTILLATION COLUMN
Distillation- A process in which a liquid or vapour mixture of two or more substances is separated into its component fractions of desired purity, by the application and removal of heat
Types of Distillation : 1. Batch column 2. continuous column
CONTROL VALVE
Control valves are the instrument used to feed the any substance or material as per requirement
Types of control valves:
1. Plug valves 2. globe vakves3. Gate valves4. Diagphram valves5. butterfly valves6. solenoid valves
ALIGNMENT
Any two split thing work together efficiently is the perfection of the alignment.
Alignment of KILN
CAUSE OF MISALIGNMENT
Operating temperature can affect alignment
Machines aligned cold can go out when warm
Bases or foundations can settle
Grouting can shrink or deteriorate
Forces transmitted to the machine by pipe or
support structure.
Soft foot.
Poor workmanship.
Increases energy demands