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Smartsulf
SmartSulf® (formerly known as ClinSulf™ or DegSulf™) is a breakthrough sulfur recovery process, using proprietary isothermal reactor technology, which enable sulfur recovery yields up to 99.5% in a two catalytic stages claus process configuration.
Process Scheme
Process Principle
- Thermal stage: acid gases are burnt with air to produce sulfur at high temperature thanks to Claus reaction.
- COS and CS2 hydrolysis: COS and CS2 from the process gases are hydrolyzed at high temperature in the first zone of the SmartSulf® reactor operating in hot mode.
- Claus reaction: Claus reaction occurs in the second zone of the hot mode SmartSulf® reactor where heat of reaction is continuously removed by thermoplates internals, thus increasing sulfur conversion.
- Subdewpoint Claus reaction: Claus reaction is performed in the cold mode SmartSulf® reactor operating below sulfur dewpoint and producing liquid sulfur which is trapped on catalyst.
- Cycle switch: when cold mode SmartSulf® reactor is saturated with liquid sulfur, a switch between hot and cold mode is performed automatically by rotating the two coupled 4 way valves, enabling the beginning of a new cycle.
Key Benefits
- Performance above 99.5% sulfur recovery
- Complete COS and CS2 destruction at high temperature
- Proven technology, successfully operating in commercial plants since 1995
- Very low capital cost
- Low operation cost: process is fully automatic and nearly needs no follow-up
- Use of conventional open market Claus catalysts
- Easy retrofit to upgrade existing Claus units into SmartSulf®
Industrial References
There are currently 17 references using SmartSulf® technology
80 TPD SmartSulf® unit at RIAMA Refinery, Salamanca - Mexico
Documentation Center
SmartSulf - Commercial Bulletin
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