gti-removing sulfur from ng 2
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Removing Sulfur from
Natural Gas MidstreamMarch 2013
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Removing Sulfur fromNatural Gas Midstream
GTI has technology platforms and
expertise in removal of contaminants> Acid gas removal>Sulfur recovery>H2S scavenging
>Process development supported throughlab and field experiments
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Sulfur Removal at allProduction Levels
H2S removal at >25 tons/dayat processing plant Amine/Claus/SCOT
Sulfur recovery(medium scale) Liquid redox
Scavengers for
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INITIAL PROJECT
GTI Sulfur Removal: A FlexibleProcess for Sweetening Natural Gas
Claus Reaction in Liquid Phase2 H 2S + SO 2 3 S liquid + 2 H 2O (Exothermic)
> Inventor: ProfessorScott Lynn, Universi tyof Califo rnia, Berkeley
> Typical solvent: DGM(diethylene glycolmethyl ether; DowDowanol DM )
> Homogeneous catalyst:3-pyridyl methanol
(less than 1 wt %)> Reactor Temperature:
250-300 F
> Reactor Pressure:any pressure
Claus Reaction in Liquid Phase2 H 2S + SO 2 3 S liquid + 2 H 2O (Exothermic)
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ONGOING WORK
Comprehensive Sulfur Removal Acid Gas Removal, Sulfur Recovery, andTail Gas Treating in One Step
Amine process> Acid gas removal
process eliminatessulfur from naturalgas to achievepermitting levels
Claus process> Sulfur recovery
SCOT tail gastreating process> Clean-up for
emissions control> Recycles remaining
sulfur compoundsback to Claus system
> CAPEX similar toClaus unit
GTI sulfur removal process can also directlyhandle CO 2-rich off-gas from amine stripper
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TechnologyBenefits> Significant economic
advantage for GTIsulfur removal process
Preliminary processperformance andeconomics suggest a40% cost savingscompared to competingtechnologies
GTI sulfur removal process reduces operating expendituresby 32%
> Cost advantage greatest in high-pressure pipeline systems> High-pressure sulfur removal can be scaled down to smaller
sulfur capacities
Amine/Claus /SCOT
GTI High-PressureSulfur Removal
GTI HPSulfur
Removal
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Next Steps/Partnering Opportunity>Design, build, and operate a pilot plant
to demonstrate the GTI sulfur removalprocess for: Amine stripper off-gas (Claus/SCOT
replacement) High-pressure natural gas treating
(sulfur removal/recovery)
>GTI is interested in partnering with
companies to commercialize thistechnology
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GTI H 2S Scavenging Research> GTI has been deeply involved in H 2S scavenging
research and development since the mid-1990s,solving problems and reducing costs for privateindustrial sponsors
> Our range of services includes engineering
consultancy, engineering design software,lab and field testing
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GTI H 2S Scavenging Technology> Patented multi-pipe direct injection scavenging technology
Flow in multiple pipes to increase scavenger utilizationand lower costs Achieve pipeline
specification
Licensed fourapplications beingused commerciallyat transmission
company storagefields
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GTI H 2S Scavenging SoftwareGTI Direct-Injection Scavenging software> Accurately predicts required conditions for direct-injection applications
> Use as a design tool for new systems or to troubleshoot existing systems
> Computer model of system performance based on testing conductedfor private industrial sponsors to understand and improve direct-injectionscavenging
Detailed calculations of H 2S removal with triazine scavenger > Effects of pipe diameter, flowrate, multi-phase flow, kinetics,
stoichiometry, nozzles, heat exchangers, temperature andpressure and other factors
Validated by oil company majors using large-scale offshoreproduction data
Available for purchase on GTI website
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GTI H 2S Scavenging SoftwareGTI Scavenger CalcBASE software> Quick screening of solid and liquid scavengers for tower-
based applications to determine most economical approach> Estimates capital and operating costs for chemicals, ranks
vendors based on your gas compositions> User has ability to input variable loading capacity range,
scavenger cost, disposal cost, contact time required andother parameters
Available for purchase on GTI website
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GTI H 2S Scavenging ConsultingRecent Example:
> Consulted a major oil company with a directinjection scavenger project in Asia concerning theexpected performance of a complex pipearrangement for direct injection
Partnering Opportunity:> GTI conducts large-scale research, development,
and demonstration projects at our facilities or inthe field
> GTI can complement or supplement a companysinternal expertise with our specialized technicaland knowledge-based services
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For More Information>Howard Meyer
GTI R&D Director,Gas Processing Research847/768-0555cell: 847/[email protected]