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Sulphur

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Accudrop ® pastillation system was developed by Berndorf Belt Systems USA in 1989, and since then it is widely used in the refineries for sulphur solidification process. Accudrop system permits to operate with the medium viscosity products, up to 15.000 cPs .It is an optimal choice for the SRU ( Sulphur Recovery Unit)
projects , following the Hydrothreater and Clauss Liquid Sulphur Recovery.

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SBS Steel Belt Systems along with cooling conveyors for liquid sulphur, provides turn-key solutions which forsee full package supply, according to customer needs, starting from liquid sulphur pumps and finishing with product packaging like silo with truck loading systems or big-bags automatic filling stations.

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Final – Sulphur Pastilles

Liquid Sulphur Characteristics

Operating temperature, °C 125° – 135°C (mandatory)
Density @ P, T,, kg/m3 1770/1798
Viscosity, est 6 / 10
Sulphur content, % weight Not less than 99,5%
H2S content, ppm weight 10 as normal –20 as max (degassed  liquid   sulphur)
Operating pressure 3 bar


Solid Sulphur Characteristics

Shape Semi spherical
Size 3 – 6 mm
Moisture content (water) Less than 0,5% weight
Bulk density, kg/m3 Not less than 1,040 as loose
Angle of repose, degrees In the range of 25° -30°
Friability performance Less than 2% fines generated under standard Stress level II test

Typical SBS Steel Belt Systems scope of supply:

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1) Technical Characteristics:
Berndorf stainless steel band NICRO 12.1 mill finished, with two vee-ropes vulcanized at 25 mm from the edges, endless welded, thickness 1,0 mm ± 0,1 mmWidth 1.500 mm. ± 1 mm.
Conveyor center-center distance 10.670 mm
Cooling length 9.140 mm
Cooling width 1.400 mm
Belt speed adjustable from 20 to 80 m/min
Belt height 1.400 mm
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A Wireframe 3D scheme of sulphur’s machine.

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3D plant scheme.

2) Performance Data:
Capacity 5.000 kg/hour of Sulphur  Pastilles
Product inlet temperature 125-130 °C
Product discharge About 65 °C
Belt cooling medium sprayed water against the beneath face of the upper strand of the belt
Cooling length 9.140,0 m
Water consumption Max  31 m3/h
Water pressure 2 kg/cm2 g
Water inlet temperature 22,0°C