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Paraxylene Production

GTC's Marketing Department — Wed, 15 Jul 2009 14:00:00 GMT

Crystallization technology has improved dramatically over the last three decades. Recent advances in equipment and process control have answered many of the criticisms that have limited its application. Previous designs relied on small units arranged in multiple processing trains and were therefore deemed maintenance intensive. The new equipment is larger, more reliable, and capable of extended run lengths without maintenance.

Paraxylene Crystallization

The C₈ aromatic isomers are difficult to separate by distillation due to their close boiling points. In particular, the boiling points of paraxylene and metaxylene differ by less than 1°C. However, because paraxylene has a markedly higher freezing point than the other isomers, crystallization can be used to facilitate its separation.

Separation of paraxylene by freezing can be accomplished either by suspension crystallization or layer crystallization. For feedstocks containing low concentrations of paraxylene (i.e. 20-24%), suspension crystallization using two or more stages of separation is the only feasible option. For enriched feedstocks, crystallization is a very attractive method of recovery.

CrystPX^SM

Suspension crystallization of paraxylene in the xylene isomer mixture is used to produce paraxylene crystals. The design uses an optimized arrangement of equipment to obtain the required recovery and product purity. Washing the paraxylene crystal with the final product in a high efficiency pusher-centrifuge system produces the paraxylene product. Figure 1 shows a general flow scheme for the technology.

Figure 1. CrystPX Process Flow Scheme

When paraxylene content in the feed is enriched above equilibrium in the case of streams originating from selective toluene conversion processes, GTC’s crystallization process technology is one of the most economical means to produce high purity paraxylene product at high recoveries. The company takes advantage of recent advances in crystallization techniques and equipment to create this attractive method for paraxylene recovery and purification.

The process advantages of this new technology include:

High paraxylene purity and recovery (99.8+ wt% purity at 95% recovery).
Crystallization equipment is simple, easy to procure, and operationally trouble free.
Simple design requires small plot size and low capital investment.
The system is flexible, enabling it to meet market requirements for paraxylene purity.
The system is easily designed to allow for future incremental capacity increases.
Feed concentration of paraxylene is used efficiently.
Flexible technology allows a range of feed concentrations (75-95 wt% paraxylene) to be processed in a single stage refrigeration system.
Design variations are used to recover paraxylene efficiently from dilute mixed xylene feedstocks (22% PX) in a multistage system.

The design uses only crystallizers and centrifuges in the primary operation. This simplicity of equipment promotes low maintenance costs, easy incremental expansions, and controlled flexibility. High purity paraxylene is produced in the front section of the process at warm temperatures, taking advantage of the high concentration of paraxylene already in the feed. At the back end of the process, high paraxylene recovery is obtained through a series of crystallizers operated successively at colder temperatures. This scheme minimizes the need for recycling excessive amounts of filtrate, thus reducing overall energy requirements.

Case Study

LG-Caltex Oil Corporation will use CrystPX crystallization process technology for its new 400,000 tpy paraxylene production unit in Yosu, Korea.

The LG-Caltex Yosu Complex currently operates a world scale paraxylene production facility with a nominal capacity of 700 tpy. This expansion catapults LG-Caltex into the position of number one merchant producer of paraxylene from a single site in the world.

The award marks GTC’s full entry into the paraxylene technology licensing business. In today’s market, with changing feedstocks and market constraints, crystallization technology gives a producer the most flexibility, reliability, and lowest investment cost.

LG-Caltex believes that the CrystPX process is the most simple and reliable technology for its application. It provides and efficient recovery of PX from the feed and the flexibility to adjust process conditions to suit market requirements. The design and equipment are simple and easily procured. A fast startup and trouble-free operation is expected in January 2003.

LG-Caltex, a joint venture between Caltex and the LG Group in Korea, is one of the world’s largest oil refiners and petrochemical producers with a refinery capacity of 650,000 bpd crude oil.

*This article also appeared in Hydrocarbon Engineering.

15-Jul-09 9:00 AM

GTC Unveils New Brand Identity

noemail@gtctech.com — Fri, 12 Mar 2010 14:00:00 GMT

Houston, Texas, March 12, 2010 – Today GTC Technology US, LLC (GTC) formally unveiled a new brand identity. The new identity represents a significant milestone in GTC’s history. The new branding system simplifies and unifies GTC’s identity across all product lines and services in order to better communicate important characteristics and value to customers.

Pinti Wang, President and CEO of GTC Technology noted that “As GTC continued to evolve, we recognized the need to consolidate our visual identity in line with our growth and diversification of products and services in the hydrocarbon processing industry. Our new identity enables us to establish and communicate stronger connections with our clients and strengthen our overall position in the marketplace.”

The new brand is communicated through a new website, marketing literature, presentations, newsletters, and a range of additional marketing materials. “Engineered to Innovate,” is GTC’s unique brand promise to clients and was developed to concisely communicate GTC’s rich heritage of innovation focused on delivering world-class products and services to the hydrocarbon processing industry.

Headquartered in Houston, Texas, GTC Technology US, LLC 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. With engineering, manufacturing facilities and a knowledgeable sales force located throughout the globe, GTC combines unparalleled industry expertise, powerful research capabilities and innovative thinking to deliver high-quality, strategic solutions for clients worldwide. www.gtctech.com

GTC Technology Opens New Office in Brno, Czech Republic

noemail@gtctech.com — Wed, 10 Feb 2010 17:00:00 GMT

Brno, Czech Republic, February 10, 2010 — GTC Technology today announced the launch of a new office located in Brno, Czech Republic. The new office will focus on serving the European and CIS markets, offering the full range of GTC products and services. The office will house a team of engineering, sales and technical service personnel.

“This move reflects GTC’s interest in reaching one of the international markets we have targeted for development. We are committed to our clients’ success and the new office will provide us with strategic access to better serve our growing regional client base,” said Pinti Wang, President and CEO of GTC Technology.

GTC Europe s.r.o. is a subsidiary of GTC International LP, a global licensor of process technologies, offering engineering services, process equipment solutions, chemicals and catalysts to the chemical, petrochemical, refining and gas processing markets. With engineering, manufacturing facilities and a knowledgeable sales force located throughout the globe, GTC combines unparalleled industry expertise, powerful research capabilities and innovative thinking to deliver high-quality, strategic solutions for clients worldwide. www.gtctech.com

GTC Technology Partners with NPP Neftehim to Offer a C5 C6 Isomerization Technology and Catalyst

noemail@gtctech.com — Tue, 17 Nov 2009 15:00:00 GMT

Houston, Texas, November 17, 2009 — GTC Technology US, LLC (GTC) today announced that it has signed an engineering and exclusive marketing agreement with NPP Neftehim to offer clients a proven mixed metal oxide isomerization catalyst “SI-2” and isomerization technology “Isomalk-2SM”. The new technology is capable of converting unbranched low-octane C5-C6 paraffins to octane boosting isomers with simultaneous benzene saturation in refinery streams. The SI-2 catalyst is a novel, highly effective Pt-containing, mixed metal, sulfated oxide isomerization catalyst. The technology is noted for its higher tolerance to moisture and other impurities and its ability to process a significant quantity of C7 components. “This isomerization technology allows refineries to process a heavier naphtha fraction, which often accompanies the operational changes to meet the MSAT II gasoline specifications for benzene, aromatics and sulfur. This partnership enables GTC...

GTC Technology Becomes a Member of Fractionation Research Inc.

noemail@gtctech.com — Fri, 22 May 2009 21:00:00 GMT

Houston, Texas, May 22, 2009 — GTC Technology US, LLC (GTC) today announced that it has joined Fractionation Research Inc. (FRI), a non-profit research consortium that independently tests commercial scale distillation equipment. FRI has put together a strong coalition of over 60 members including fortune 500 companies, linking suppliers and buyers together while promoting best practices in the industry. GTC intends to conduct tests at FRI and allow members to vigorously evaluate GTC Process Equipment Technology product lines. FRI will play an essential role in providing unbiased assessments of GTC’s products, offering clients a deeper understanding of product performance and function. “FRI is one of the most respected non-profit organizations in the industry and an influential voice in efforts to promote best practices and improve fractionation devices. Joining FRI further demonstrates our commitment to quality products and ultimately better value for our...

GTC Mexico Expands to New Manufacturing Facility

noemail@gtctech.com — Fri, 24 Apr 2009 19:30:00 GMT

Corregidora, Queretaro, Mexico, April 24, 2009 — GTC México (GTC) announced today that it has relocated to a larger manufacturing facility in Queretaro, Mexico. The new facility doubles fabrication space and includes investments in new equipment to accommodate the growing business needs and better serve GTC’s clients.

The new facility is expected to generate significant manufacturing efficiencies by improving production capability, flexibility, and flow of operations. The plant’s staff will initially focus on manufacturing of mass transfer products, reactors and drums. This includes conventional distillation equipment and unique high performance products such as the GT-OPTIM™ product line.

“The new facility will help sustain continued growth of GTC’s process equipment technology product lines. It will enable us to continue to fill our long-term commitment to delivering world class products to clients around the world,” said Casey Bowles, General Manager of GTC Mexico.

GTC Mexico is a joint venture between GTC International LP and Chemisa, S.A. The Mexico office serves the Mexican and Latin American markets by providing technical process solutions and state of the art equipment, including equipment for distillation units in refineries, petrochemical plants, and chemical plants. www.gtctech.com

Chemisa is an engineering company that offers equipment installation services to the chemical, petrochemical and refining industries. For more information visit www.chemisa.com.

PEMEX awards GTC Mexico EPC Contract at Ethylene Oxide Plant

noemail@gtctech.com — Mon, 30 Mar 2009 13:00:00 GMT

Queretaro, Mexico, March 30, 2009 — GTC Technology US, LLC (GTC) today announced that Petróleos Mexicanos (PEMEX) has awarded GTC México (GTC) an EPC contract to revamp their Ethylene Oxide plant. GTC was chosen based on proven solutions, plant operation reliability, and safety. As part of the agreement, GTC will provide major distillation columns, mass transfer equipment, reactors, chemicals, field engineering and installation work. This project will conclude the final phase of the 250,000 MTA Ethylene Oxide plant revamp.

“In today’s economic climate, where it is essential to do more with less, GTC Mexico can provide a strong technology foundation that is highly reliable while reducing PEMEX’s overall plant costs,” said Pinti Wang, President and CEO of GTC Technology.

GTC Mexico is a subsidiary of GTC International LP. The subsidiary serves the Mexican and Latin American markets by providing technical process solutions and state of the art equipment, including equipment for distillation units in refineries, petrochemical plants, and chemical plants. www.gtctech.com

For more information on PEMEX Petrochemicals visit www.ptq.pemex.com.

GTC Technology Reaches Marketing Cooperation Agreement with CrystaTech

noemail@gtctech.com — Wed, 14 Jan 2009 14:00:00 GMT

Houston, Texas, January 14, 2009 — GTC Technology US, LLC (GTC) has reached an agreement with CrystaTech to take their eco-friendly Mobile Sulfur Recovery Unit process technology into the China, India, and Russian markets. This technology will expand on GTC’s gas processing portfolio to a new method for H2S removal. The agreement also covers regional marketing of CrystaSulf, a liquid phase Claus H2S removal process. As part of the agreement, GTC will provide marketing support, engineering expertise and local experience to ensure the successful delivery of the advanced technologies to clients. “GTC chose to collaborate with CrystaTech because of their unique technology portfolio. This partnership will provide GTC with an expanded offering for sulfur removal in gas streams. By working with CrystaTech we will be able to deliver greater value to existing clients and offer the latest cutting edge technology to the gas processing industry. We look forward to a...

Petrochemical Holding GmbH chooses GTC Technology for Large Aromatics Project at Rafo

noemail@gtctech.com — Thu, 16 Oct 2008 20:00:00 GMT

Houston, Texas, October 16, 2008 — GTC Technology US, LLC (GTC) today announced that Petrochemical Holding GmbH, has chosen eight of GTC’s proprietary process technologies, CrystPXSM, GT-BTX PluSSM, GT-BTX®, GT-IsomPXSM, GT-TransAlkSM, GT-Aromatization, Pygas Hydrotreating, and Hydrodesulfurization for a major petrochemical project in its 3 MM tpa crude oil refinery in Oneşti, Romania. The aromatics complex, operated by S.C. Rafo S.A. is designed to produce 400 kta of Paraxylene and 200 kta of Benzene. The objective of the project is to generate paraxylene and benzene from low-value fuel streams. GTC’s innovative approach will upgrade the catalytic cracked products by direct recovery of aromatics from the FCC gasoline, with additional aromatics production from mixed olefins. The new configuration will completely eliminate motor gasoline production at the refinery. This approach is significantly less expensive and distinct from other processes, which...

GTC Technology Korea Co., Ltd. Achieves ISO 9001 Certification

noemail@gtctech.com — Fri, 22 Aug 2008 13:00:00 GMT

Houston, Texas, August 22, 2008 — GTC Technology Korea Co. Ltd., a subsidiary of GTC Technology International LP, today announced that it has received ISO 9001 certification from The United Kingdom Accreditation Service. The ISO 9001 certification is the most widely recognized international set of standards for creating and maintaining quality management systems (QMS). It identifies the elements of QMS required for delivering the highest level of product quality and customer satisfaction. GTC’s Engineering Center and manufacturing facility in Korea were the recipients of this certification.

A comprehensive internal audit was conducted to address goals, monitor processes and review customer requirements. Working procedures, QMS training, equipment safety, facility layout, and work spaces were also examined for improvements. In conclusion, GTC has created a streamlined approach to quality management which will improve business operations, service, and product quality.

“The ISO 9001 certification is an important milestone for GTC. It is tangible evidence of our commitment to responsive customer service and continuous improvement. It further signifies GTC’s commitment to meeting the needs of the industry and evolving markets. I am extremely proud of our team in Korea who demonstrated outstanding teamwork and dedication in achieving the ISO 9001 certification,” said Mr. Pinti Wang, President of GTC Technology.

Headquartered in Houston, Texas, GTC 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. With engineering, manufacturing facilities and a knowledgeable sales force located throughout the globe, GTC combines unparalleled industry expertise, powerful research capabilities and innovative thinking to deliver high-quality, strategic solutions for clients worldwide. www.gtctech.com

Samsung Total Selects GT-BTX to Replace Morphylane Process

noemail@gtctech.com — Mon, 12 May 2008 16:00:00 GMT

Houston, Texas, May 9, 2008 — GTC Technology US, LLC (GTC) today announced that Samsung Total Petrochemicals Co., Ltd has chosen GT-BTX® to revamp their Morphylane extractive distillation unit. GT-BTX® will be used to extract high-purity benzene and toluene from hydrotreated pygas and reformate feeds at Samsung Total’s 800,000 ton/yr Naphtha Cracking Center (NCC) in Daesan, South Korea. GT-BTX® offered the most effective solution for Samsung Total to expand and upgrade their aromatics extraction facilities while avoiding duplicate or parallel equipment. The capacity increase is 75% above the previous maximum amount. Mr. D.H. Lee, Vice President of Samsung Total participated in a signing ceremony in Houston to confirm the project agreement. “Our technical team determined that GTC’s technology was the best option to expand our unit. We are pleased with the innovative ideas from GTC’s staff, which will help us improve the efficiency and...

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...

Lorem ipsum survey

noemail@gtctech.com — Thu, 10 Jan 2008 23:05:04 GMT

Objectives:

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Release Date: 10-Jan-08 5:05 PM
Expiration Date: 10-Apr-08 5:05 PM

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2008-01-10T23:05:04Z

Instructor: Instructor

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