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GTC Technology Licensing Partnerships at Work Reducing the Cost of H 2 S Removal and Sulfur Recovery GT-SSR TM Engineered to Innovate ®
| Date post: | 11-Nov-2014 |
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GTC Technology Licensing Partnerships at WorkReducing the Cost of H2S Removal and Sulfur Recovery
GT-SSRTM
Engineered to Innovate®
GT-SSRGTC Technology Licensing Partnerships at Work
Engineered to Innovate
GT-SSR: Reducing the cost of H2S Removal and Sulfur Recovery with Claus processExclusively licensed by GTC Technology, GT-SSR is a “modified Claus” process that integrates the Claus unit with tail gas treating. GT-SSR offers lower capital and operating costs, demonstrating high reliability and up to 99.9% sulfur recovery efficiency. Single train capacities are available from 4 to 350 ton/day.
Process OverviewAs with traditional Claus designs, sour gas is mixed with air or oxygen and sent to a combustion section that partially converts H2S to SO2. The combustion is conducted at conditions that enable the destruction of hydrocarbons ammonia and cyanides. The H2S and SO2 react with each other to produce sulfur and water.
H2S + 1½ O2 → SO2 + H2O
2H2S + SO2 → 3/x Sx + 2H2O
3H2S + 1½ O2 → 3/x Sx + 3H2O
The gas, exiting the thermal section, then enters a waste heat boiler where heat is recovered. Sulfur is then condensed and high pressure steam is generated. The gas stream is reheated in a proprietary reheating section before introduction to the first Claus reactor. Following this, the sulfur is condensed before reheating and introduction into the second Claus reactor. Low pressure steam is generated as the sulfur condenses. The number of Claus catalyst stages depends on the acid gas concentration and desired level of sulfur recovery required.
Claus tail gas is then heated by flue gas from the off-gas incinerator and sent to a hydrogenation reactor after mixing with hydrogen. Low pressure steam is generated as the reactor effluent cools, and travels to a quench column. The sour water generated is directed to the sour water stripper while the quenched tail gas is sent to the tail gas amine unit. Off-gas from the amine absorber goes to the off gas incinerator, and the amine regenerator off-gas is transported to the sour gas feed of the GT-SSR process. Molten sulfur handling and conversion to solid sulfur are optionally available.
A number of variations of this technology can be applied depending on the acid gas concentration, ammonia content and specific situations. A variety of tail gas treating options are also available, including caustic treating.
There are many nuances to the design and operation of a reliable “modified Claus” process: the complexity of the combustion and catalytic reaction, the unique properties of sulfur and the corrosion risk inherent to this system. GT-SSR offers a design that is well proven in numerous applications.
Operating Ranges• H2S concentration from 30 – 97%
• NH3/H2S ratio of up to 42%
• Recoveriesfrom98.5to99.99%
Process Advantages• Guaranteedturndownto30%.
• Hydrogensourceflexibility
• Loweroperatingcoststhanliquidiron-redoxorothernon-aqueous sulfur recovery processes
• Highpurity,saleablesulfur
• Abilitytodestructammonia,BTX,cyanideand heavy hydrocarbon
The GT-SSR process offers the inherent benefits of the “modified Claus” process with tail gas clean up, along with the experience that comes from having multiple installations.
ApplicationsGT-SSR is applicable to amine and sour water streams. These are typical in refinery operations as well as in gas processing.
GTC Technology 1001 S. Dairy Ashford, Suite 500 Houston, Texas 77077 USA Main +1-281-597-4800 Toll Free [email protected] | www.gtctech.com
TM
GTC Technology Engineered to Innovate
GTC Technology 1001 S. Dairy Ashford, Suite 500 Houston, Texas 77077 USA Main +1-281-597-4800 Toll Free [email protected] | www.gtctech.com
Tail
Gas
Abs
orbe
r
Sulfur Pit
WHB ClausReactors
and Condensers
Reductionand
Quench
Incinerator
HP Steam
LP Steam
Rich AmineSour Water
Sulfur
Hydrogen
Air
Furnace
Sour Gas
BFW
Quench WaterLean Amine
Figure 1 – Schematic of GT-SSR process, illustrating the integration of the various processes.
Engineered to InnovateTo learn more about GTC Technology’s leading-edge technology solutions and the many ways we can help improve your operations and profitability, call us today at +1-281-597-4800, e-mail us at [email protected] or visit our Web site at http://www.gtctech.com. GT-SSR™ is a trademark of GTC Technology US, LLC.
Figure 2 – Detail of the “modified Claus” portion of the GT-SSR process.
HP Steam
LP Steam
Gas toIncineratoror Tail Gas
Sulfur
Air
Sour Gas
BFW
Furnace
Condenser Condenser
CatalystBed
CatalystBed
Reheat
Sulfur Pit
Condenser
Reheat Reheat
CatalystBed
Condenser
WHB
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+1-281-597-4800 [email protected]
GTC Technology is a global licensor of process technologies and mass transfer solutions with the mission of creating value for our clients. Refining, petrochemical and chemical companies around the world rely on GTC’s advanced processes to optimize production capacity and efficiency. With insightful industry expertise, research capabilities and innovative thinking, GTC solves complex processing problems and has earned a reputation of excellence in designing and delivering high-quality, strategic solutions for clients worldwide. We’re engineered to innovate.
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