Classifications

• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B17/00—Sulfur; Compounds thereof
  • C01B17/02—Preparation of sulfur; Purification
  • C01B17/0232—Purification, e.g. degassing

Definitions

• This invention relates to the distillation of sulfur, and has for-its object the provision of certain improvements in sulfur distillation.
• Retorts of many difierent shapes and sizes have been used in the purification of crude sulfur by distillation and heretofore it has been the general practice to construct such retorts of iron, usually gray iron. Since hot sulfur reacts with iron, corrosion of the distillation retorts takes place at the temperatures reached by the sulfur during its distillation, and in time such corrosion destroys the retort.
• @ur present invention contemplates the provision of a sulfur distillation apparatus having such parts thereof as are exposed in operation to the action of molten or vaporous sulfur protected against corrosion by a calorized coating.
• a sulfur distillation apparatus having such parts thereof as are exposed in operation to the action of molten or vaporous sulfur protected against corrosion by a calorized coating.
• calorized iron resists to a remarkable degree the corroding action of I boiling sulfur.
• apiece of calorized steel which was kept ih boiling sulfur for a total period of four days and in sulfur at a temperature of 130 ,C. during certain intermediate intervals to have completely resisted attack by the sulfur.
• retorts, stills andsimilar apparatus for the distillation of sulfur are constructed in whole orin part of calorized material.
• the distilling apparatus may be of any appropriate shape and size and the calorizing of the material thereof may be effected in any convenient manner.
• W e prefer to construct the sulfur distilling apparatus of iron or steel and to protect such parts thereof as are exposed in operation to the corroding action of molten or vaporous sulfur by a calorized coating.
• the calorization of the interior of such sulfur distillation apparatus is carried out after'the installation thereof, in order to insure an unbroken homogeneous calorized surface.
• calorized coating is frequently rough on the outside, and, where desired, such a rough coating may be buffed down to form a smooth surface.
• the improvement in the distillation of sulfur which comprises carrying out the distillation in an apparatus having such surfaces thereof as are exposed in operation to the action of molten or vaporous sulfur protected against corrosion by a calorized coat- 1n
• the improvement in the distillation of sulfur which comprises carrying out the distillation in an apparatus having such parts thereof as contact during the operation with molten or vaporous sulfur protected against corrosion by a corrosion resistant medium containing iron and aluminum.
• An apparatus for distilling sulfur having such surfaces thereof as are exposed in operation to the action of molten or vaporous sulfur protected against corrosion by a such parts thereof as are 1n contact during the distillation with molten sulfur protected against corrosion by a corrosion resistant calorized coating.
• a retort for distilling sulfur havingsuch parts thereof as are in contact during the distillation with molten sulfur protected against corrosion by a corrosion-resistant medium containing iron and aluminum.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
• Manufacture And Refinement Of Metals (AREA)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=23846353

Family Applications (1)

Country Status (2)

Cited By (1)

• 1921
  • 1921-04-27 US US465064A patent/US1398960A/en not_active Expired - Lifetime
  • 1921-07-07 FR FR538031D patent/FR538031A/fr not_active Expired

Also Published As

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