Abstract: A header design for an efficient single pass enlargement process of sulfur granules having two internal piping structures within an external header conduit for delivering separate molten sulfur liquid streams to different sets of nozzles, wherein a first set of nozzles is subjected to flow streams and pressures uniquely different from a second set of nozzles. A water header design may also include two internal piping structures inside an external pipe casing for delivering water in at least two sets of nozzles, wherein the first set is subjected to flow streams and pressures different from the second set. A method of sulfur seed generation and sulfur granule enlargement for processing sulfur, employing a unique sulfur header design with dual internal piping structures, and possibly utilizing in tandem a water header design having a dual internal piping structure for feeding two sets of nozzles.

Abstract: The present invention is concerned with degassing processes, and more specifically with a degassing apparatus and method for removing hydrogen sulfide and hydrogen polysulfides from liquid sulfur in a rapid and efficient manner to result in low residual hydrogen sulfide and hydrogen polysulfide levels. Utilizing a rotodynamic degassing pumping unit, a first fluid, typically in the liquid phase, is pumped or drawn under pressure or vacuum, while a second fluid, typically in a gaseous phase, is pumped or drawn under pressure or vacuum into the first fluid, effecting a chemical reaction. A rotary impeller having a plurality of blades is presented at a submerged location in the liquid sulfur surrounded by a draft-tube. The rotor (impeller) is divided into three distinct blade sections: a) a radial flow section; b) a mixed flow section; and c) an axial flow section. An overflow weir controls the depth of the liquid inside the degasser's housing.