17945809. ADSORPTION-BASED CLAUS TAIL GAS TREATMENT simplified abstract (Saudi Arabian Oil Company)
Contents
ADSORPTION-BASED CLAUS TAIL GAS TREATMENT
Organization Name
Inventor(s)
Georgios Lithoxoos of Dhahran (SA)
Sebastien A. Duval of Dhahran (SA)
Rashid M. Othman of Al Khobar (SA)
ADSORPTION-BASED CLAUS TAIL GAS TREATMENT - A simplified explanation of the abstract
This abstract first appeared for US patent application 17945809 titled 'ADSORPTION-BASED CLAUS TAIL GAS TREATMENT
Simplified Explanation
The patent application describes a method for sulfur recovery, which involves converting sulfur-containing compounds in a Claus tail gas stream to hydrogen sulfide. The process includes several steps such as hydrogenation, quenching, adsorption, separation, and regeneration.
- Hydrogenation reactor converts sulfur-containing compounds in Claus tail gas stream to hydrogen sulfide.
- Quench tower condenses liquid water from the hydrogenated gas stream, producing a quenched gas stream.
- First stage adsorption unit adsorbs water from the quenched gas stream, producing a first outlet gas stream.
- Second stage adsorption unit adsorbs hydrogen sulfide from the first outlet gas stream, producing a second byproduct gas stream.
- The second byproduct gas stream is separated into a carbon dioxide stream and an enriched nitrogen stream.
- The enriched nitrogen stream is used to regenerate the second stage adsorption vessel.
Potential Applications:
- Sulfur recovery in industries such as oil and gas, chemical manufacturing, and refining.
- Environmental protection by reducing sulfur emissions and minimizing pollution.
Problems Solved:
- Efficient and effective recovery of sulfur from Claus tail gas stream.
- Reduction of sulfur emissions, which can cause environmental and health issues.
- Minimization of pollution and compliance with environmental regulations.
Benefits:
- Improved sulfur recovery process.
- Enhanced environmental sustainability.
- Compliance with sulfur emission regulations.
- Cost savings by utilizing enriched nitrogen for regeneration.
Original Abstract Submitted
A method for sulfur recovery includes, in a hydrogenation reactor, converting sulfur-containing compounds in a Claus tail gas stream to hydrogen sulfide to produce a hydrogenated gas stream; feeding the hydrogenated gas stream to a quench tower to produce a quenched gas stream by condensing liquid water; feeding the quenched gas stream to a first stage adsorption vessel of a first stage adsorption unit to produce a first outlet gas stream by adsorbing water from the quenched gas stream; feeding the first outlet gas stream to a second stage adsorption vessel of a second stage adsorption unit to produce a second byproduct gas stream by adsorbing hydrogen sulfide from the first outlet gas stream; separating the second byproduct gas stream into a carbon dioxide stream and an enriched nitrogen stream; and regenerating the second stage adsorption vessel using the enriched nitrogen stream.
