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Sulzer GTC’s Sulfur and Gas Processing Technology Portfolio

Sulzer GTC’s gas processing and sulfur technology portfolio is focused on delivering eco-friendly solutions for acid gas removal, dehydration, mercury removal, liquids recovery and sulfur recovery from a variety of process gas streams to meet very specific customer needs. These technologies are delivered in a variety of ways including license with a basic engineering package or with an Engineering, Procurement and Contruction management (EPCm) package.  Our broad portfolio of products and extensive experience enables clients to seamlessly integrate our processes across business lines. Listed below is an overview of our gas processing and sulfur removal technologies offered.

Sulzer GTC has a large and varied portfolio of technologies for the removal of contaminants and the recovery of sulfur and CO2 from a variety of process streams. We utilize these technologies to deliver robust and reliable custom solutions for challenging applications across a variety of industries.

Sulfur Recovery – GT-DOS Direct Oxidation to Sulfur

GT-DOS is a patented sulfur recovery technology that catalytically converts the hydrogen sulfide to sulfur. GT-DOS is ideally suited to sulfur removal from lean acid gas streams for sulfur recovery of 0.5 ton/day and higher. GT-DOS enables sulfur removal efficiency of 85-95% without tail gas treatment. Higher removal efficiencies can be achieved with appropriate tail gas treatment. GT-DOS has a simplified process scheme that allows lower capital and operating cost compared to competing technologies, while delivering high purity sulfur similar to Claus sulfur.

Sulfur Recovery – CrystaSulf®

CrystaSulf is a patented sulfur recovery technology that captures and converts hydrogen sulfide to sulfur in a single absorber/reactor without need of acid gas enrichment. CrystaSulf is suited for the “mid-range” of sulfur recovery, between 0.5 – 25 ton/day, with technology variants extending its range to 200 ton/day, while offering sulfur removal efficiencies >99.8%. CrystaSulf has lower capital costs than amine-Claus-tail gas and lower operating costs than scavengers in the range of its application, without the fouling and plugging tendencies associated with iron-redox technologies. CrystaSulf produces >98% min. purity sulfur which is easily blended into conventional Claus sulfur.

Sulfur Recovery – Claus

Sulzer GTC offers a “modified Claus” process for the recovery of sulfur from streams containing hydrogen sulfide. We offer specialized engineering designs and proprietary equipment for robust and reliable sulfur removal. The capacity range offered extends from 3 – 2,500 ton/day. Sulfur removal efficiencies of up to 98% are possible depending on the number of catalytic stages. Higher levels of removal require a tail gas treating unit. Options for oxygen enrichment, ammonia destruction and sulfur degassing technology are also available.

GT-MeriSorb Acid Gas Removal and Acid Gas Enrichment

Sulzer GTC offers a range of regenerable solvent-based technology for the removal of CO2 or H2S from gas streams. GTC’s background in acid gas removal dates to the mid 1980’s when it led efforts in CO2 capture from flue gas using optimized amine chemistry. The choice of specially formulated solvents to provide selectivity of H2S over CO2 enables the design of Acid Gas Enrichment units. Sulzer GTC utilizes its market leading technology for tower internals for mass-transfer to improve the effectiveness of our designs.

Sour Water Stripping

Sour water Strippers are designed to remove dissolved hydrogen sulfide and ammonia either separately or in a single stream, from waste water streams. SWS are challenging to operate due to the variability in feed quality. As a result, reliable operation requires robust engineering design and experience, as well as critical technology for mass transfer internals. Sulzer GTC offers designs that minimize capital cost and overall operating cost.

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