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Aromatization Technology

Tue, 02 Mar 2010 18:09:01 GMT

GTC Technology, in alliance with our technology partner, offers commercially proven aromatization technology for gasoline octane improvement or aromatics production. The technology uses a proprietary catalyst in fixed bed reactors with periodic catalyst regeneration. GTC provides various options in capital investment and operation modes to maximize our client’s profits.

Process Advantages

Aromatization technology for octane improvement

Upgrade low octane gasoline to premium gasoline
Overall product utilization (gasoline +LPG) is greater than 93%
The upgraded RON 90 gasoline has low sulfur and olefins, and is excellent blending material combined with FCC gasoline

Aromatization technology for aromatics production

Convert C₄ – C₈ olefins into aromatics
No hydrogen needed
Complete integration with Steam Cracker possible with dry gas for hydrogen recovery; LPG and paraffins are recycled to steam cracking
Simple distillation is typically used to meet the aromatics specifications for paraxylene manufacture
Feedstocks can be from FCC, Steam Cracking, and Coking

Please contact us for more information on our aromatization technology.

Pyrolysis Gasoline (Pygas) Hydrotreatment Technology

Tue, 02 Mar 2010 18:08:33 GMT

GTC Technology offers an optimized technology for two-stage pyrolysis gasoline hydrotreatment in cases where di-olefins, olefins, and styrene in the raw pygas feed are saturated. The technology is simple and easy to implement into existing plant requirements. The process is applied to the C5+ fraction of raw pyrolysis gasoline. Process Description In GTC's pyrolysis hydrotreating technology process, the hydrotreating unit consists of three sections: First stage hydrotreating section to saturate mainly di-olefins to olefins Second stage hydrotreating section to saturate the olefins and de-sulfurize the pygas Fractionation section to stabilize the hydrotreated streams and to recover the C6-C8 heart cut for further processing for aromatics extraction and the C9+ cut. Raw pygas is first fed to the first stage hydrotreating section. The pygas feed stream along with hydrogen is preheated by the recycle liquid stream to the desired temperature and sent to the first stage HDT reactor...

Xylene Isomerization Technology - GT-IsomPXSM

Tue, 02 Mar 2010 18:07:29 GMT

GT-IsomPX is GTC's xylene isomerization technology available in two versions: EB isomerization type and EB dealkylation type. Both versions gain high ethylbenzene conversion rates while producing equilibrium mixed xylenes. Catalysts that exhibit superior physical activity and stability are the key to this technology. The technology and catalysts are used commercially in several applications. Process Description For an EB dealkylation type of isomerization, the technology encompasses two main processing areas: reactor section and product distillation section. In this process, PX-depleted feed stream is first mixed with hydrogen. The mixed stream is then heated against reactor effluent and through a process furnace. The heated mixture is fed into isomerization reaction unit, where MX, OX, and PX are isomerized to equilibrium and EB is de-alkylated to Benzene. The reactor effluent is cooled and flows to the separator, where the hydrogen-rich vapor phase is separated from the...

Selective Toluene Disproportionation Conversion Technology - GT-STDPSM

Tue, 02 Mar 2010 18:06:32 GMT

GT-STDP produces paraxylene-rich mixed xylene along with high purity benzene streams from toluene. This toluene disproportionation technology boasts high toluene conversion rates and integrated production routes. GT-STDP features a commercially-proven proprietary catalyst with high activity and selectivity to paraxylene. Process Description The technology encompasses three main processing areas: reactor section, product distillation and paraxylene (PX) recovery. Fresh toluene and recycled toluene from the product distillation area are mixed with hydrogen. The hydrogen-to-toluene ratio is about 1 to 1.5. The mixed stream is heated against reactor effluent and through a process furnace. The heated vapor stream flows to the reactor, which produces the benzene and xylenes. The toluene disproportionation reactions are mildly exothermic. The reactor effluent is cooled and flows to the separator, where the hydrogen-rich vapor phase is separated from the liquid stream. A small portion...

Styrene Recovery Technology - GT-Styrene

Tue, 02 Mar 2010 18:05:59 GMT

GT-Styrene is GTC's extractive distillation process that directly recovers styrene from the raw pyrolysis gasoline derived from the steam cracking of naphtha, gas oils, and natural gas liquids (NGL). The styrene, produced at high purities and suitable for polymerization, is a less costly alternative to conventional styrene production routes. If desired, the mixed xylenes can also be extracted from the pygas, raising their value as a chemical feedstock. Our GT-Styrene process is economically attractive to steam cracker operators which produce greater than 500 KMTA ethylene from liquids feedstock. Process Description Raw pyrolysis gasoline is prefractionated into a heartcut C8 stream. The resulting styrene concentrate is fed to an ED column and mixed with a selective solvent, which extracts the styrene to the tower bottoms. The rich solvent mixture is routed to a solvent recovery column (SRC), which recycles the lean solvent back to the ED column and recovers the styrene overhead....

Aromatics Recovery Technology - GT-BTX

Tue, 02 Mar 2010 18:04:33 GMT

GT-BTX is GTC's premier aromatics recovery technology. GT-BTX uses extractive distillation (ED) to purify benzene, toluene, and xylene (BTX) from refinery or petrochemical aromatics streams such as catalytic reformate or pyrolysis gasoline. The process is superior to conventional liquid-liquid extraction and other extraction processes in terms of lower capital and operating costs, simplicity of operation, range of feedstock, and solvent performance. GT-BTX is the most reliable method for grassroots aromatics extraction units and has been applied in revamping all of the established LLE or ED technologies. GT-BTX is unique in its ability to extract high purity aromatics with nearly complete recovery from 3-carbon boiling range feedstock. This technology is also the optimum choice to meet the gasoline specifications of reduced benzene. Process Description In our GT-BTX aromatics recovery technology, hydrocarbon feed is preheated with hot circulating solvent and fed at a midpoint into...

Office Locations

Thu, 18 Feb 2010 14:43:22 GMT

GTC Technology - Headquarters 1001 S. Dairy Ashford, Suite 500 Houston, Texas 77077 Main Number: +1 281 597 4800 Fax Number: +1 281 597 0942 Toll Free: +1 877 693 4222 Directions to our office in Houston GTC Technology - Dallas1333 Corporate Drive, Suite 320 Irving, Texas 75038 Main Number: +1 972 887 3802 Fax: +1 972 887 3826 GTC Technology - Bozeman 910 Technology Boulevard, Suite F Bozeman, Montana 59718 Main Number: + 1 406 582 7417 Fax Number: +1 406 922 6440 GTC Technology - China Room 2801, Building C of Kaixuancheng No. 170 Beiyuan Road., Chaoyang District Beijing, China 100101 Main Number: +86 10 5823 5297 Fax Number: +86 10 5823 6143 www.gtcbeijing.com GTC Technology - Korea #514, 5F, Worldmerdian Venture Center II, 426-5 Gasan-Dong, Geumchun-Gu Seoul, Korea 153-759 Main Number: +82 2 2025 8411 Fax: +82 2 2025 8419 GTC Technology - MexicoCircuito Balvanera No. 20 Fraccionamiento Industrial Balvanera Corregidora, Queretaro Mexico,...

Hydrogen Sulfide Removal Technology - CrystaSulf

Thu, 18 Feb 2010 09:26:02 GMT

GTC Technology, in alliance with CrystaTech, is supporting projects utilizing CrystaSulf technology, a nonaqueous process that has been developed specifically for the treatment of high-pressure sour natural gas in medium-sized sulfur applications with produced sulfur in the range of 0.1 to 30 tons per day. Process Description CrystaSulf uses a nonaqueous solution with a high solubility for elemental sulfur. Because the elemental sulfur stays dissolved in the solution, there are no solids in the liquid circulated to the absorber. By design, CrystaSulf avoids the problems that make the aqueous sulfur recovery systems unsuitable for direct treatment of high-pressure gas. With this process, H2S is removed from the sour gas in a conventional tray absorber. The H2S reacts with dissolved sulfur dioxide (SO2) to produce dissolved elemental sulfur. There are no solids in the absorber, flash tank, or solution lines, which minimizes the chance of plugging. Rich solution from the absorber...

Dimethyl Terephthalate (DMT) Technology - GT-DMTSM

Thu, 18 Feb 2010 09:25:13 GMT

GTC's GT-DMT technology is a series of process enhancements for dimethyl terephthalate production. The technology addresses oxidation, distillation, esterification, crystallization, and waste-water treatment resulting in lower energy consumption, increased capacity, and yield improvements. Multiple projects aimed at the improvement of DMT production from paraxylene and methanol feedstocks have resulted in efficient processing schemes for this production route. Our GT-DMT technology is flexible and may be implemented in increments. Full utilization can produce a significant capacity increase in revamp situations with maximum use of existing equipment. For grassroots projects, capital investment is significantly reduced while obtaining improved yields and maximum capacity. Process Description The common method for the production of DMT from paraxylene (PX) and methanol consists of four major steps: oxidation, esterification, distillation, and crystallization. A mixture of PX and...

Carboxylic Acid Recovery Technology - GT-CAR

Thu, 18 Feb 2010 09:24:40 GMT

GT-CAR is GTC's carboxylic acid recovery technology that combines liquid-liquid extraction technology with distillation to recover and concentrate carboxylic acids from wastewater. The use of a high boiling solvent enables the process to attain the lowest energy use of any commercially available process, with minimal capital costs. The recovered acids may be sold as high purity products or recycled back to the process. The biological oxygen demand of the resulting wastewater stream is greatly reduced. GTC's GT-CAR process is economical for any aqueous stream generated in the production of dimethyl terephthalate (DMT), purified terephthalic acid (PTA), pulp/paper, furfural, and other processes. Acids concentrations as low as 0.5-3.0% can be recovered economically. High purity formic acid or acetic acid are typical products. Process Description In GTC's carboxylic acid recovery process, an acid-containing aqueous stream is fed to an extraction column, which operates using a...

Light Naphtha Isomerization Technology - IsomAlk-2SM

Thu, 18 Feb 2010 09:23:36 GMT

Isomalk-2SM is a broad range isomerization technology developed by NPP Neftehim, which has been commercially proven in various regions of the world. This flexible process utilizes a robust platinum-based mixed oxide catalyst SI-2 that works effectively at low temperatures, while delivering greater stability against the influence of catalyst poisons. Isomalk-2 is a competitive alternative to the three most commonly used light gasoline isomerization processes: zeolite, chlorinated alumina and sulfated oxide catalysts. A range of configurations of this technology have been demonstrated in operating units. GTC has partnered with NPP Neftehim to support the global licensing, catalyst sales and engineering for this technology. Process Description Isomalk-2 offers refiners cost-effective isomerization options that have consistently demonstrated reliable performance with all standard process configurations, including: Once-through isomerization Once-through with pre-fractionation...

FCC Gasoline Desulfurization Technology - GT-BTX PluSSM

Thu, 18 Feb 2010 09:23:02 GMT

GT-BTX PluSSM is a variation of GT-BTX® that uses extractive distillation technology for simultaneous recovery of BTX and thiophenic sulfur species from refinery or petrochemical aromatic-containing streams. The technology helps produce low sulfur gasoline meeting the 10 ppm limit of sulfur without change in octane value. An alternative use of GT-BTXPluS is to generate a large volume of aromatics to produce paraxylene without the requirement of a typical naphtha reformer unit. The aromatics recovery is especially attractive for use with feedstocks produced from high severity FCC operations. The process is optimally installed on the FCC mid-cut naphtha stream. GT-BTX PluS removes all thiophenes and some of the mercaptan species from the FCC gasoline feed. The olefin-rich raffinate can be sent directly to the gasoline pool for blending, or to a caustic treating unit to remove the mercaptan-type sulfur compounds before being sent to the gasoline. The desulfurized aromatics extract...

Benzene Saturation Technology - GT-BenZap

Thu, 18 Feb 2010 09:22:10 GMT

GTC's process know-how can meet refiner's needs by providing a variety of cost effective solutions, ranging from aromatics extraction to catalytic hydrogenation for benzene management in gasoline-bound streams. GT-BenZap is suggested for refineries limited by economies of scale required for benzene extraction or for units located in remote areas away from benzene consumers. When implementing GT-BenZap GTC's experts simulate the existing process and provide custom integration with the refiner's existing units for effective benzene management. Process Description GTC's GT-BenZap process features a reliable traditional design paired with a proven active hydrogenation catalyst. The process consists of hydrotreating a narrow-cut C6 fraction, which is separated from the full-range reformate to saturate the benzene component into cyclohexane. The reformate is first fed to a reformate splitter, where the C6 heart cut is separated as a side-draw fraction while the C7+ cut and the C5-...

Packed Column Distribution Essentials

Thu, 18 Feb 2010 09:08:28 GMT

The importance of column internal design is often overlooked in most packed column designs. Vapor and liquid distribution are of critical importance to ensure the efficient performance of distillation columns. GTC offers a wide range of GT-SMARTTM column internals which include liquid/vapor distributors, collector trays, and packing supporting/retaining devices. We can upgrade any internals that require heavy-duty mechanical design in flashing-feed systems. Below is a listing of our packed column offerings, for more information, please contact us. Liquid Distributors GTC's liquid distributor product line is designed to reach high-quality initial liquid dispersion in packed columns. We offer trough type distributors, pan type distributors, tray type distributors, deck type distributors and pipe type distributors. All of our liquid distributors can be constructed from standard or exotic materials with optimum distribution configuration to maximize column coverage and turndown. ...

** Home Page - Featured Content

Tue, 16 Feb 2010 06:14:48 GMT

Global Technology Licensor

GTC Technology is a global licensor

of process technologies, offering engineering services, process

equipment solutions, chemicals
and catalysts to the chemical, petrochemical, refining and gas processing markets.

Research & Development

Tue, 16 Feb 2010 05:51:17 GMT

Research and Development is one of our most powerful assets that propels us toward cutting edge innovation. GTC's state-of-the-art research center headquartered in Bozeman, Montana, is a collaborative network of relationships with universities and partners across the globe. Our clients and internal staff members enjoy direct access to advanced technical support and a diverse range of scientific experts.

With extensive bench-scale and pilot-scale capabilities and advanced analytical capabilities, our clients rely heavily on us to improve operations and technology while minimizing the impact on the environment.

GTC's clients can expect:

Security - knowledge that proprietary information is kept secure
Custom Fit Technology which can be tailored to each client's individual needs
In-house technical support so questions and concerns are addressed immediately
Technical solutions with conscientious and deliberate respect for the environment

Please contact us to learn more about our research and development.

Process Equipment Engineering Services

Tue, 16 Feb 2010 04:49:22 GMT

GTC Technology's process equipment technology team designs and provides specialized tower internal solutions that cover a broad spectrum of conventional and proprietary trays, packing and other tower internals. Beyond providing innovative process equipment, we offer practical solutions backed by process optimization and energy saving studies. For separation column systems, GTC's process equipment technology team offers a full spectrum of engineering services including:

Basic engineering
Project development and feasibility studies
Column revamp and optimization studies
PFD / P&ID
Process simulation
CFD studies
Process equipment evaluation / selection
Heat exchanger evaluation
Transport equipment and pipe line hydraulics
Pilot plant testing
Column scanning
Field technical services
Column troubleshooting
Column start-up assistance

For more information on our engineering services please contact our process equipment technology department.

Basic Engineering Packages

Tue, 16 Feb 2010 04:46:17 GMT

GTC's Basic Engineering Package (BEP) is designed so that all important technology information can efficiently and successfully be transferred to customers. The information is constructed so that an experienced detail engineering contractor can easily execute the corresponding DE documentation. Our BEP covers the entire technology know-how information for constructing and operating a plant. The BEP information is built on company know how, thoughtful analysis and research, proprietary simulation models, internal data bases, and monitoring of operational technologies: GTC's comprehensive BEP documentation includes: Detailed process flow diagrams P&ID's, heat and material balance Equipment process specifications Process control description Instrument process specifications PSV's and flare loading specifications Material of construction diagrams Detailed operating instructions Analytical procedure manual Our BEP documentation covers different operating scenarios in terms of feed,...

GT-BTX Process Technology

Fri, 12 Feb 2010 22:15:46 GMT

GT-BTX® is GTC's premier aromatics recovery technology. GT-BTX® uses extractive distillation (ED) to purify benzene, toluene, and xylene (BTX) from refinery or petrochemical aromatics streams such as catalytic reformate or pyrolysis gasoline. The process is superior to conventional liquid-liquid and other extraction processes in terms of lower capital and operating costs, simplicity of operation, range of feedstock, and solvent performance. GT-BTX® is the most reliable method for grassroots aromatics extraction units and has been applied in revamping all of the established LLE or ED technologies. GT-BTX® is unique in its ability to extract high purity aromatics with nearly complete recovery from 3-carbon boiling range feedstock. This technology is also the optimum choice to meet the gasoline specifications calling for reduced benzene.

Advantages:

Lower capital cost compared to conventional liquid-liquid extraction or other ED systems
Energy integration reduces operating costs
Higher product purity and aromatic recovery
Recovers aromatics from full-range BTX feedstock
Distillation-based operation provides better control and simplified operation
Proprietary formulation of commercially available solvent exhibits high selectivity and capacity
Low solvent circulation rates
Insignificant fouling due to elimination of liquid-liquid contactors
Fewer hydrocarbon emission sources for environmental benefits

Polyamide 6 (PA 6)

Fri, 12 Feb 2010 17:22:50 GMT

GTC can offer enhanced and competitive PA 6 technology including:

PA 6 chips for POY/FDY spinning
PA chips for industrial yarn grade one-step spinning
PA 6 chips for carpet yarn spinning (BCF)
PA 6 chips for high grade engineering plastics
PA 6 chips for Bi-axially oriented Polyamide (BOPA) film

Product Features:

Product yield over Caprolactam reaches up to 99.5%
Two step continuous polymerization process, which generates uniform molecular weight distribution
Latest design on extraction, tower internals, and packing, resulting in high monomer concentration in extraction water, and low extractable contents in chips
Continuous drying process with N2 as media in the closed system
Automatic N2 pulse conveying system, reduces the powder generation during transfer
Latest design with direct recycle of recovered Caprolactam and automatic de-slag

Industrial Yarn Spinning

GTC can offer PA 6 industrial yarn spinning technology with superior yarn quality.

Product Applications Include:

Tire cord
Ropes
Fishing lines and nets
Monofilament
Tarpaulins
Cables

Textile Filament

Information on advanced and cost effective PA 6 textile filament yarn (POY&FDY) spinning technology is available upon request.