Invention Grant
US08025724B2 Sulphur pellet comprising H2S-suppressant 有权
包含H2S抑制剂的硫磺丸

  • Patent Title: Sulphur pellet comprising H2S-suppressant
  • Patent Title (中): 包含H2S抑制剂的硫磺丸
  • Application No.: US10582060
    Application Date: 2004-12-08
  • Publication No.: US08025724B2
    Publication Date: 2011-09-27
  • Inventor: Imants Deme
  • Applicant: Imants Deme
  • Applicant Address: US TX Houston
  • Assignee: Shell Oil Company
  • Current Assignee: Shell Oil Company
  • Current Assignee Address: US TX Houston
  • Agent Charles W. Stewart
  • Priority: EP03257777 20031210
  • International Application: PCT/EP2004/053357 WO 20041208
  • International Announcement: WO2005/059016 WO 20050630
  • Main IPC: C08L95/00
  • IPC: C08L95/00 C09C1/22 B05D5/10
Sulphur pellet comprising H2S-suppressant
Abstract:
The invention provides a sulphur pellet comprising at least one H2S-suppressant, comprising in the range of from 60 to 100 wt % elemental sulphur, based on the total weight of the pellet. The invention further provides a process for the manufacture of sulphur pellets comprising at least one H2S-suppressant, comprising the steps of: (a) mixing elemental sulphur, one or more H2S-suppressants and optionally a filler in a mixing unit to obtain a mixture; (b) shaping and/or palletizing the mixture obtained in step (a) in a palletizing unit to obtain H2S-suppressant-comprising sulphur pellets. The invention further provides a process for the manufacture of a sulphur-comprising asphalt paving mixture comprising the steps of: (i) preheating bitumen at a temperature of between 140 and 180° C.; (ii) preheating aggregate at a temperature of between 140 and 180° C.; (iii) mixing the hot bitumen with the hot aggregate in a mixing unit, wherein sulphur pellets comprising H2S-suppressant according to the invention are added in at least one of the steps (i), (ii) or (iii). The invention also provides the use of a sulphur-comprising asphalt paving mixture comprising H2S-suppressant in the paving of roads.
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