Invention Grant
- Patent Title: Sulphur pellet comprising H2S-suppressant
- Patent Title (中): 包含H2S抑制剂的硫磺丸
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Application No.: US10582060Application Date: 2004-12-08
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Publication No.: US08025724B2Publication 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

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.
Public/Granted literature
- US20070125268A1 Sulphur pellet comprising h2s-suppressant Public/Granted day:2007-06-07
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