gti-removing sulfur from ng 2

8/10/2019 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]

gti-removing sulfur from ng 2

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