Patent · US Expired

Sulfur dioxide generator

US4966757A · kind A · utility

22Cited by
11References
18Claims
0Family size

Inventors

Key dates

Filing dateMar 22, 1989
Grant dateOct 30, 1990
Priority date—
Expiry dateMar 22, 2009

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01B17/54
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

An improved apparatus for burning sulfur to sulfur dioxide and generating sulfurous acid comprising a primary sulfur-burning chamber, a sulfur feed tank closely coupled to the primary chamber, a secondary sulfur burning chamber, and an absorption tower, Air is drawn into the primary chamber under turbulent, high velocity negative pressure conditions. Gas passes through the secondary chamber under turbulent negative pressure flow conditions. The apparatus is capable of converting sulfur to sulfur dioxide at a rate in excess of 25 pounds of sulfur per hour per square foot of surface area of the molten pool of sulfur in the primary chamber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.