Sulphur melter

Whether material with a higher moisture content can be used by providing a dryer or will it get dried during the process itself OR a somewhat higher steam consumption for melting the material can be accepted, e.g. a moisture content of 1 % can increase steam consumption of sulphur melters by about 19-20 %. 

Sulphur melters and burner, water treatment plant internal, heat exchangers between converter passes (de-scaling of tubes), plate heat exchangers for acid and oleum cooling. Special emphasis is laid on those units having abnormal pressure drops and less efficiency (converter, acid towers, heat exchangers, etc.). 

Sulphur melters and keeping sulphur feed lines and pumps warm,... 

The building should include a separate brick-built room for the sulphur melter and filters when solid sulphur is used. 

If possible, direct unloading into process units shall be explored to save cost and contamination due to repeated handling in the premises (sulphur procured in road trucks can be unloaded directly in the melter, rock phosphate unloaded directly on to the grids of crushers, bauxite lumps into loading hoppers of belt conveyors, and alkali in day tanks) or... 

Steam is also used to melt sulphur in underground melters, to keep jacketed pipes carrying molten sulphur hot. 

Sulphur is melted in melters by steam coils. It is then pumped to the relractory-lined furnace to produce SO2 by burning. Air blower suppfies diy air to the furnace through the drying tower. The hot gases from exit of furnace are cooled in a waste heat recovery boiler 1 and then passed through a multistage converter having... 

Steam coils in melter and filtration system Sulphur melting and filtration Reduction of production Keep ready spare steam coils... 

Fire at sulphur yard or melters. Plant area and surroundings will be heavily polluted by SO2 gas Do not allow smoking in this area provision of fire fighting system Ban smoking strictly check operation of fire fighting system regularly... 

A reverse flow of sulphur from the combustion furnace to the melters cannot happen through the spray gun even when the sulphur pumps trip (in this case, temperatures will drop in all units. It is indicated by alarm for sulphur pump and by temperature indicators). 

A small hopper can be built around the grid to permit accumulation of a sulphur pile above the grid and to provide additional free space to prevent foaming over. As the sulphur melts under the grid, the pile gradually sinks into the melter. Regular re-charging of solid sulphur would require only a minor amount of the operator s time on each shift. 

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