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# NATEX Prozesstechnologie GesmbH: NATEX entstand im Rahmen eines Management-Buyouts aus der Schoeller-Bleckmann Prozesstechnologie Division, einem Teil eines staatlichen Stahlkonzerns, in dem vor mehr als 40 Jahren die ersten Anwendungen von überkritischem CO2 eingeführt wurden. Seitdem steht NATEX an der Spitze der Entwicklungen im Bereich der überkritischen Extraktion.

## Sitemaps
[XML Sitemap](https://natex.at/sitemap_index.xml): Includes all crawlable and indexable pages.

## Posts
- [Vincent T.C. Kuo, Chief of Bio-process & Energy Engineering Section of MIRDC, Taiwan](https://natex.at/vincent-t-c-kuo-chief-of-bio-process-energy-engineering-section-of-mirdc-taiwan/): Natex is professional in dense CO2 technology especially in the extraction and powder generation processes with substantial experience in scale-up … I believe that Natex will supply a valuable service to any customer with consistent high quality and reliable system performance.
- [Ranjit Ramachandran, CEO Plant Lipids Privat Limited, India](https://natex.at/ranjit-ramachandran-ceo-plant-lipids-privat-limited-india/): “The zeal to adapt new technology, attention to detail and the impeccable service of Natex, makes them the world’s leading and preferred manufacturer of SCFE plants. Our relationship with Natex is getting stronger by the day.”
- [Dominique Tourneix, Managing Director Oeneo Group and President DIAM Bouchage, France](https://natex.at/dominique-tourneix-managing-director-oeneo-group-and-president-diam-bouchage-france/): Company NATEX has had a key role as our partner in the realization of successful DIAM projects to create supercritical CO2 cork cleaning units. A professional relationship between the two companies NATEX and DIAM have gone beyond the usual quality of such client-supplier relationsships. It must be told that a valuable partnership has been established in terms of technical input, in terms of innovative solutions and in the strategic vision the leaders of NATEX are fully associated with.

## Pages
- [FAQ](https://natex.at/faq/): CO₂ becomes a supercritical fluid when it is compressed above a pressure of 73,8 bar and heated to a temperature above 31,1 °C. Above this critical point, it has special properties: it combines the advantages of a gas-like, low viscosity – which makes it easier to diffuse into a solid matrix – with a liquid-like, high density and hence very good solvation properties.
- [HOME OF SUPERCRITICAL CO2](https://natex.at/): Together with our international clients from various industries, we are continuously challenging the status quo in supercritical CO2 extraction and are setting standards concerning innovation, profitability and performance.
- [RESEARCH & PILOT TESTING](https://natex.at/research-pilot-testing/): At our technical center, we specialize in developing and optimizing supercritical fluid processes of every type. Whereas the majority is supercritical CO2 extraction of solid raw materials, it can also be impregnation, fractionation, powder generation or even completely new process. Our experts specialize in CO2 as a process fluid and are eager to help you getting the best out of your individual product.
- [EQUIPMENT SUPPLY](https://natex.at/equipment-supply/): It is essential to have the right tools available to achieve stable and safe production with any high-pressure technology. Natex is not just a partner to develop a new and unique process but mainly a supplier of high-quality equipment at every required scale, from R&D to the biggest plants in the world.
- [ENGINEERING AND IMPROVEMENT](https://natex.at/engineering-and-improvement/): With more than 30 years of experience in industrial CO2-based processes, including the biggest and most efficient plants in the world, Natex offers extensive experience and know-how in the field of Engineering, Optimization, and Scale-Up. This knowledge is available for all types of CO2-based projects, including:
- [AFTER SALES SERVICE](https://natex.at/after-sales-service/): The investment and construction of a supercritical CO2 extraction plant or other equipment is just the beginning of a successful journey to utilize the full power of this remarkable process fluid. It also starts decades of operating high-pressure equipment which is generally very robust, but still requires knowledge and some degree of care to fully benefit and make sure it stays safe for everyone. Therefore, Natex provides the following services after the equipment goes into operation:
- [OPEN POSITIONS](https://natex.at/open-positions/): To strengthen our team, we are looking for a
- [OUR DEPARTMENTS](https://natex.at/our-departments/): At Natex we are a specialized team that is always eager to challenge the status quo and continue to develop the supercritical CO2 technology. This is done in unique projects from various industries and all over the world where we turn the ideas of our customers into reality.
- [MISSION & HISTORY](https://natex.at/mission-history/): We believe in the unique power of CO2 as a process fluid and want to utilize it in as many industrial applications as possible.
- [POWDER GENERATION TECHNOLOGIES](https://natex.at/powder-generation-technologies/): Overview
- [SUPERCRITICAL CO2 IMPREGNATION](https://natex.at/co2-impregnation/): Supercritical carbon dioxide (CO₂) has improved impregnation processes across various industries due to its unique thermophysical properties. Its low viscosity and high diffusivity enable it to penetrate porous materials more effectively than traditional methods. This results in a more uniform and efficient distribution of impregnation agents within the substrate.
- [REFERENCES](https://natex.at/references/): Here you can find a selected overview of equipment supplied by Natex since 1987. This list is not exhaustive but is intended to provide a glimpse into the capabilities of a leading supercritical CO2 equipment provider. It ranges from research units with 2L extractor volume to the biggest plants installed globally (with 20m³ vessels) and shows the full range of potential for applying this technology in all industries from mass products to pharma specialties.
- [SUPERCRITICAL CO₂ TECHNOLOGY](https://natex.at/supercritical-co2-technology/): CO₂ as supercritical fluid is used in a variety of processes where its unique properties are advantageous for the process and the processed materials. NATEX is continuously expanding the list of applications and technologies. High pressure CO₂ processes are based on the principle that gases in a supercritical state (above the critical pressure and the critical temperature) can dissolve larger quantities of substances than the partial pressure of the substance in the solvent would normally permit. Nevertheless, they penetrate solid structures like a gas and are therefore combining advantages of those states. Especially for the food, pharmaceutical, and cosmetic industry, there are several interesting advantages for using CO₂.
- [CO2 EXTRACTION OF LIQUID RAW MATERIAL](https://natex.at/co2-extraction-of-liquid-raw-material/): Fractionation is the process of separating a mixture into its individual components based on differences in their physical or chemical properties. Supercritical CO2 serves as an excellent solvent for this purpose due to its unique properties :
- [CO2 EXTRACTION OF SOLID RAW MATERIALS](https://natex.at/co2-extraction-of-solid-raw-materials/): A typical supercritical CO2 extraction system is shown schematically in the picture above. The process starts at the working tank, where the CO2 is stored for the operation. It is then compressed in a high-pressure pump and brought to the desired extraction temperature. Afterwards it is directed into one of the extraction vessels in which the carrier material is located. The extractors are equipped with quick opening closures to allow easy and safe filling and discharging. Solid raw materials are typically fed into the extractor by means of a basket or directly into the vessels. Several extraction vessels can be combined to a functional system so that extraction can be carried out on a continuous basis despite the batch operation of the extractors.
- [SPECIAL APPLICATIONS](https://natex.at/special-applications/): Besides well-established applications in the food, pharma and cosmetic sectors there is a lot of other potential for utilizing CO2 as a process medium. Its unique properties, especially in the supercritical stage, make it an ideal tool for a lot of tasks. CO2 is often used because of its mobility in even difficult material structures, while still acting as an efficient transportation agent. Additionally, it disappears in ambient conditions without any residue. Such qualities are used in processes where it removes components from a matrix or is distributing a soluble substance uniformly. We are happy to hear from you about your idea and discuss it with you.
- [COSMETICS](https://natex.at/cosmetics/): The CO2 extraction technology as a contemporary, sustainable process provides solvent-free extracts with healthy properties, in addition to natural extracts for the development of fragrances and personal care products for the cosmetic industry. Botanical ingredients sensitive to high temperatures can be extracted smoothly and selectively. Fragrances and aromas remain unchanged. Pure extracts are achieved with fewer process steps.
- [FOOD AND NUTRACEUTICALS](https://natex.at/food-and-nutraceuticals/): The food and nutraceutical industry of today is searching for natural ingredients that are free from harmful substances. Supercritical-CO2 extraction has been established as a "green" and sustainable technology and represents an attractive alternative to traditional methods. Solvent-free products are key elements of health-promoting functional food and ingredients. This technology allows for the extraction of high-quality compounds without the use of harmful solvents, ensuring that the final products are safe and beneficial for consumers.
- [PHARMACEUTICALS](https://natex.at/pharmaceuticals/): The supercritical CO2 extraction and other processes based on CO2 as a solvent are of high interest for different areas of the pharmaceutical industry. This is mainly due to the unique properties of CO2, which allow the extraction of sensitive substances selectively and gently. Natex is experienced in providing everyone access to these special properties and provides the biggest and most advanced equipment in the pharmaceutical industry, regularly setting and expanding the cGMP standard for this high-pressure industry.
- [CONTACT](https://natex.at/contact/): You want to know more about our plants or services? We are happy to hear from you and find out together how we can help you with making your CO2 project a success.
- [SITEMAP](https://natex.at/sitemap/): Pages AFTER SALES SERVICE
CO2 EXTRACTION OF LIQUID RAW MATERIAL
CO2 EXTRACTION OF SOLID RAW MATERIALS
CONTACT
COSMETICS
ENGINEERING AND IMPROVEMENT
EQUIPMENT SUPPLY
FAQ
FOOD AND NUTRACEUTICALS
HOME OF SUPERCRITICAL CO2
IMPRINT
MISSION & HISTORY
OPEN POSITIONS
OUR DEPARTMENTS
PHARMACEUTICALS
POWDER GENERATION TECHNOLOGIES
PRIVACY POLICY
REFERENCES
RESEARCH & PILOT TESTING
SITEMAP
SPECIAL APPLICATIONS
SUPERCRITICAL CO2 IMPREGNATION
SUPERCRITICAL CO₂ TECHNOLOGY
- [IMPRINT](https://natex.at/imprint/): Responsible for the content of these pages: NATEX Prozesstechnologie GesmbH
- [PRIVACY POLICY](https://natex.at/privacy-policy/): The operators of these pages take the protection of your personal data very seriously. We treat your personal data confidentially and in accordance with statutory data protection regulations and this privacy policy.

## Portfolio
- [CO₂ extraction plant for the pharmaceutical industry](https://natex.at/projects/co%e2%82%82-extraction-plant-for-the-pharmaceutical-industry/): The plant with its horizontal extractor is designed and built in accordance with the requirements of cGMP (current Good Manufacturing Practice). All components comply with hygienic principles. Full emptying, measuring devices free of dead space and well thought-out piping ensure short cleaning times and minimized contamination risks. The documentation and control were carried out taking into account customer expectations and the regulatory requirements in the pharmaceutical environment.
- [Powder generation plant](https://natex.at/projects/powder-generation-plant/): For the technology provider and developer of the Particles from Gas Saturated Solutions (PGSS), Concentrated Powder Form (CPF) and other powder generation processes which have been incorporated in this project, Natex built a Pilot plant to demonstrate the feasibility, scalability and provide products for the end customers.
- [Research and development plants](https://natex.at/projects/research-and-development-plants/): The research and development plants are fully tested after their assembly at Natex and will be shipped only after proper training of the operators and fulfillment of the internal tests that confirm that it is functioning according to the specifications. Therefore, the installation at site is fast and it just requires the defined utilities like electricity, pressurized air and CO2 in bottles are available.
- [Wood impregnation plant](https://natex.at/projects/wood-impregnation-plant/): Supertrae A/S in Hampden, Denmark, began industrial-scale wood impregnation using supercritical CO2 in 2002. This investment spurred significant development efforts in the wood industry.
- [Rice treatment plant](https://natex.at/projects/rice-treatment-plant/): NATEX developed an innovative supercritical CO2 extraction process for treating rice, aimed at removing plant-protective agents and contaminants. This process, involved systematic investigations and optimization on both bench and industrial scales to make sure the plant worked as expected. The environmentally friendly extraction plant, operational since 1999, treats over 90 tons of brown and polished rice daily. The process not only reduces harmful residues and undesirable substances, improving taste and shelf life, but also decreases cooking time. This high-pressure extraction technology leverages NATEX's expertise in the food industry, ensuring substantial quality improvements in rice.
- [Special Lipid extraction plant](https://natex.at/projects/special-lipid-extraction-plant/): This industrial CO2 extraction plant installed in New Zealand is used for a variety of products with a focus on highly valuable lipids from the local sea. For example, it produces Green lip mussel extract rich in Omega-3-fatty acids and consists of 91 different fatty acids including EPA, DHA but also the rare OTA and ETA with different positive effects:
- [Decaffeination plant for tea](https://natex.at/projects/decaffeination-plant-for-tea/): Decaffeination of tea was the first industrial application for supercritical CO2 realized by Natex under the former name of Schöller Bleckmann. It was innovative back then, but it is a still increasingly interesting application of supercritical CO2 technology due to a global trend in consumer awareness and the desire to reduce chemical solvents like Dichloromethane or ethyl acetate. The capacity of the plant was originally designed to be 3.000 tons of black tea. It used an isobaric process, which made it energy efficient because there is no need for evaporation or condensation of the CO2 during the normal extraction process but with the downside of losing the caffeine in this early stage. Nevertheless, there are also other possibilities to recover the caffeine and make it a valuable product. The advantages compared to other decaffeination processes for tea are:
- [Decaffeination plant for coffee](https://natex.at/projects/decaffeination-plant-for-coffee/): Decaffeination was one of the first industrial applications for supercritical CO2 and is increasingly interesting with the trend of reducing chemical solvents like Dichloromethane or ethyl acetate. The capacity of the supplied equipment was originally designed to be 10.000 tons of arabica and robusta coffee and it is producing even more after over 30 years in operation. It uses an isobaric process, which makes it very energy efficient because there is no need for evaporation or condensation of the CO2 during the normal extraction process of the beans, which can take between 8 to 14h, depending on the type and origin of the coffee. The advantages compared to other decaffeination processes are:
- [Multipurpose CO2 extraction plants](https://natex.at/projects/multi-purpose-co2-extraction-plants/): Multipurpose CO2 extraction plants are designed to handle a wide variety of raw materials and are therefore designed in a flexible way. These plants utilize typically supercritical CO2, a state of carbon dioxide where it exhibits properties of both a liquid and a gas, making it an excellent solvent for extracting valuable compounds from those diverse materials. It can also work at the liquid stage where the extraction can be more selective for some components.
- [Industrial deoiling plant for sesame](https://natex.at/projects/industrial-deoiling-plant-for-sesame/): This special CO2 extraction equipment was designed for the oil extraction from roasted sesame but it is a plant which is not just producing highly valuable oil, but also protein rich residue. With its extractor volume of 3,8m³ and its basket volume of 2,6m³ it is working at a scale where even those medium valuable products can be extracted economically. Back then it represented the largest 550bar CO2 extraction plant which was built. The product was superior to conventionally available oils and contained much higher levels of antioxidants like sesamol and tocopherol as well as of bioactive compounds like phytosterols and selenium. It also enriched the flavor of the oil which results in a better taste. The germicidal properties of supercritical CO2 further enhance the quality of the oil.
- [Extraction plant for spices and herbs](https://natex.at/projects/extraction-plant-for-spices-and-herbs/): This multi-purpose plant utilizes supercritical CO2 to produce high-quality extracts from botanical materials. This process is used to isolate and extract valuable compounds such as essential oils, flavors, and nutraceuticals. The CO2 acts as a solvent, efficiently extracting these compounds without the use of harmful chemicals, ensuring a pure and clean final product. The system is designed for high efficiency, minimal extraction times, and low energy consumption.
- [Cork cleaning plant Diam 1 + 2](https://natex.at/projects/cork-cleaning-plant-diam-1-2/): Cork is a natural polymeric foam (based on the substance suberin) and has been used for centuries for closing of bottles. Secondary metabolic products of fungal and bacterial infections in cork are responsible for the typical cork taste in wine. The most unpleasant substance that is responsible for the loss of quality of the wine is 2,4,6 trichloroanisole (TCA). Wine specialists can detect already 2 ng / l of this substance in the wine.
- [Cork cleaning plant Diam 3](https://natex.at/projects/cork-cleaning-plant-diam-3/): Cork is a natural polymer foam (based on the substance suberin) and has been used for centuries for closing of bottles. Secondary metabolic products of fungal and bacterial infections in cork are responsible for the typical cork taste in wine. The most unpleasant substance that is responsible for the loss of quality of the wine is 2,4,6 trichloroanisole (TCA). Wine specialists can detect already 2 ng / l of this substance in the wine.
- [Industrial scale Pharmaceutical CO2 extraction plant](https://natex.at/projects/industrial-scale-pharmaceutical-co2-extraction-plant/): With this plant Natex is proving its position as a reliable partner for developing, engineering, fabricating and installing industrial CO2 processing plants for pharmaceutical applications which are fulfilling all relevant requirements like Good Automated Manufacturing Practice (GAMP 5), 21 CFR part 11 and more. It is also representing the biggest pharmaceutical CO2 extraction plant ever built by Natex and therefore might be the biggest pharmaceutical CO2 extraction plant in the world.
- [Worlds largest hops extraction plant](https://natex.at/projects/worlds-largest-hops-extraction-plant/): The excellent engineering and process know-how from NATEX complemented with the individual abilities of selected suppliers for the supercritical CO2 core equipment allowed the efficient realization of an innovative turnkey project - the world's largest hops extraction plant with an annual capacity of approximately 10.000 tons of raw hops.