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Juice Clarification Systems

 
Vishwa "Film Type " Sulphur Burner

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Abstract
 
Sulphur Furnace plays crucial role in the clarification. Batch type furnace is a history now.

The problems of improper melting of solid sulphur..... Cleaning of melter and receiver..... Choking of melt valves..... Leakage of melt valves..... Frequent charging..... Varying combustion ...sublimation ... corrosion of main furnace ... flashing of water all over the Burner station..... Leakage of gas..... were there with the batch type furnaces.

Now this is the time to give serious consideration of this state of the art  SO generation system ' FILM TYPE SULPHUR BURNER.'
 
Introduction
 
Melter
Raw sulphur is melted with Sufficient heating surface and the impurities are seperated with overflow ( to seperate solid impurities) and underflow ( to seperate floating particles) arrangement.

Separate comartment provides clean and clear melt of sulphur to melt feeding pump & valves and ensures smooth feed to the furnace.The bigger volumetric capacity of melter gives sufficient period, for sulphur charging and pumping.

Melt Feed Arrangement
Melt Feed Pump privided with stroke variation arrangement for adjusting the desired feed.It maintains constant & accurate feed of melt to combustion chamber and maintains constant gas production.

Preheating arrangement
The oil-fired preheater is provided for preheating of main furnace if required at the begining.

The Main Furnace chamber
The hi-tech design of combustion chamber (refractory lined) where the oxidation of sulphur and dilution by air is completed and uniform gas is delivered to the sulphitors.Special design consideration while deciding the volumetric capacity and cooling surface of Main Furnace Chamber ensures the optimum burning capacity. Internally special arrangement of refractory bricks lining is provided to obtain desired air flow passage and enhanced burning area for sulphur burning and vapourisation.The capacity of burner can be adjusted from 50 to 250 kh/hr by adjusting the stroke of feed pump.

The Cooling Arrangement
Vertical water jacketed primary cooler and secondary cooler (i.e cooler and scrubber combined unit) to obtain desired outlet temp. of SO2 and avoid the flashing of water all around.

Instrumentation
1) Sulphur Feed adjustment coarse by stroke adjustment and fine by vfd ( AC drive unit ).
2) Four point temperature indication at various stages from sulphur melt to final gas.
3) Over Current protection for pump motor.

 
Advantages over Conventional Sulphur Furnace
  • Variable capacity from 50 to 250 Kg/hr
  • Complete combustion of Sulphur
  • Auto Sulphur feed by melt feed pump
  • Quick startup
  • Easy  for immediate stoppage
  • Optimum sulphur consumption
  • No sublimation
  • No possibility of SO3 formation
  • Control over pollution
  • Practically negligible maintenance