Liquid-Liquid Extraction Technology

0610 4501 Liquid-Liquid Extraction Technology at Sulzer Chemtech

Sulzer Chemtech, a member of the Sulzer Corporation, with headquarters in Winterthur, Switzerland, is active in the field of process engineering, employing 3’000 persons worldwide. Sulzer Chemtech is represented in all important industrial countries setting standards in the field of mass transfer and static mixing with its advanced and economical solutions.

Sulzer Chemtech is organized into four business units, one of which is the Process Technology group. This business unit was formed in early 2009 following the acquisition of Kühni, a Swiss company with more than 75 years experience in innovative separation processes. Today, Sulzer Chemtech Process Technology is headquartered in Allschwil (Basel), Switzerland. We provide a unique and wide portfolio of separation and application technologies, amongst which liquid-liquid extraction.

Working Principle Fields of Application Liquid-liquid extraction is an important the liquids are transported countercur- Liquid-liquid extraction is a complex sepa- separation technology, with a wide range rently. The viscosity and interfacial tension ration process. An additional component of applications in the modern process in- are additional important parameters. has to be introduced as extractant, which dustry. The extraction process is based on makes other subsequent separation steps In nearly all liquid-liquid extraction pro- different solubilities of components in two necessary. Therefore, liquid-liquid extrac- cesses one of the liquids is dispersed into immiscible, or partially miscible, liquids. tion is mostly used when separation of the second liquid in the form of droplets. The components that need to be recov- components by distillation is either un- The key for a high process performance ered are extracted from the feed stream economical, or even impossible. Some is an adapted droplet size and a uniform with the help of an extractant (often called examples are: hold-up profile throughout the column. solvent). Both liquids have to be thorough- This requires specially adapted equipment • Simultaneous separation of various ly contacted and subsequently separated and in-depth know-how about two phase components with widely differing boiling from each other again. To achieve high pu- liquid flows. points rities and yields, it is necessary to operate with multiple stages and with the liquids • Separation of high-boiling products or flowing countercurrently. pollutants which are present in only low concentrations For successful separation by extraction, all • Separation of components with similar components must meet certain specifica- boiling points or components forming tions. The main criteria for the extractant azeotropes are a favorable partition coefficient, a high selectivity and an easy separation from • Separation of mixtures with thermally the extracted product. The basic condi- sensitive components tions for the pair of liquids are a low mutual • Selective separation of single compo- solubility and a difference in density, which nents out of a multi-component mixture is the driving force for the motion of the • Separation of components from electro- droplets. In most multistage extractors, lytic solutions

Our head offices in Allschwil, Switzerland

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2 Liquid-Liquid Extraction Technology at Sulzer Chemtech Overview of Equipment

Sulzer Chemtech, a member of the Sulzer Corporation, with headquarters in Winterthur, Switzerland, is active in the field of process Our liquid-liquid extraction is a technically sophisticated separation technology, offering you a solution where other tech- engineering, employing 3’000 persons worldwide. Sulzer Chemtech is represented in all important industrial countries setting standards nologies are uneconomical or even not feasible in the field of mass transfer and static mixing with its advanced and economical solutions.

Sulzer Chemtech is organized into four business units, one of which is the Process Technology group. This business unit was formed in Extractors Classification Extractor Types early 2009 following the acquisition of Kühni, a Swiss company with more than 75 years experience in innovative separation processes. Today, Sulzer Chemtech Process Technology is headquartered in Allschwil (Basel), Switzerland. We provide a unique and wide portfolio The main task of any extractor is to create A wide range of equipment for liquid-liquid You can find our equipment in almost all of separation and application technologies, amongst which liquid-liquid extraction. optimal conditions for mass transfer be- extraction is available, which can be cat- industrial applications. Our portfolio is tween the two phases. This includes drop- egorized as follows: based on a number of modern, efficient let formation / dispersing, transport and • Extraction columns types of extractors. The core of this range Working Principle Fields of Application settling of the phases. Two types of dis- is the agitated Kühni column type ECR • Mixer-settlers Liquid-liquid extraction is an important the liquids are transported countercur- Liquid-liquid extraction is a complex sepa- persion are possible. The feed can be dis- with an extremely wide field of applica- • Centrifugal extractors separation technology, with a wide range rently. The viscosity and interfacial tension ration process. An additional component persed into the solvent, or be continuous tions, and the Sulzer packed column ECP. of applications in the modern process in- are additional important parameters. has to be introduced as extractant, which with the solvent dispersed into it. These The extraction columns, also referred to as Mixer-settler type extractors are available dustry. The extraction process is based on makes other subsequent separation steps two types often show a considerably dif- extraction towers, can be further differenti- if process reasons do not favor the use of In nearly all liquid-liquid extraction pro- different solubilities of components in two necessary. Therefore, liquid-liquid extrac- ferent behavior. Also, the type of contact ated into three groups: columns. cesses one of the liquids is dispersed into immiscible, or partially miscible, liquids. tion is mostly used when separation of between the two phases is an important, the second liquid in the form of droplets. • Static without energy input Column type extractors: The components that need to be recov- components by distillation is either un- equipment related aspect. In the case of The key for a high process performance • Agitated • Agitated Kühni column ECR ered are extracted from the feed stream economical, or even impossible. Some stage-wise contact, the liquids are com- is an adapted droplet size and a uniform with the help of an extractant (often called examples are: pletely separated from each other in every • Pulsed • Sulzer packed column ECP hold-up profile throughout the column. solvent). Both liquids have to be thorough- stage, whereas in the case of differential This requires specially adapted equipment • Simultaneous separation of various Mixer-settler type extractors: ly contacted and subsequently separated contact, the liquids are in continuous, and in-depth know-how about two phase components with widely differing boiling • Mixer-settler EMS from each other again. To achieve high pu- countercurrent contact. Both systems liquid flows. points rities and yields, it is necessary to operate have specific advantages affecting equip- • Mixer-settler column ECMS with multiple stages and with the liquids • Separation of high-boiling products or ment sizes and extraction efficiency. flowing countercurrently. pollutants which are present in only low concentrations For successful separation by extraction, all • Separation of components with similar components must meet certain specifica- boiling points or components forming tions. The main criteria for the extractant azeotropes are a favorable partition coefficient, a high selectivity and an easy separation from • Separation of mixtures with thermally the extracted product. The basic condi- sensitive components tions for the pair of liquids are a low mutual • Selective separation of single compo- solubility and a difference in density, which nents out of a multi-component mixture Sulzer extraction packing Installation of an industrial ECR type column on site is the driving force for the motion of the • Separation of components from electro- droplets. In most multistage extractors, lytic solutions

Our head offices in Allschwil, Switzerland

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2 3 Agitated Kühni Column ECR

Our flexible, multipurpose extraction column

Basic and Mechanical Design Advantages and Characteristics The agitated Kühni column is a well-prov- Based on its flexible design and our long- en, highly efficient extractor. Its main char- standing experience, the Kühni column acteristics are the agitated compartments, ECR has a range of advantages: arranged one on top of each other. The • Universal use concept is simple, yet, its hydrodynamic performance is outstanding. • High flexibility for varying process parameters and physical properties Turbine Mixers and Partition • Reliable scale-up Plates • More than 30 theoretical stages in one single column Turbine agitators installed in each stage are responsible for the formation of the • Standard turndown 1 : 3 dispersion. They create a torus-shaped, • Column diameter: 30 mm - 3.5 m rotary flow pattern and also mix the liquid • Physical properties: phases radially, which is an important con- Velocity [m/s] - Density difference > 40 kg/m3 dition for safe and reliable scale-up. Perfo- 0.0513 0.0907 0.130 0.169 0.209 0.248 0.287 0.327 rated plates form the boundaries between - Viscosity < 500 mPas each agitated compartment and reduce - Interfacial tension > 2 mN/m CFD analysis of an agitated extraction column back-mixing to enhance the separation • Differential phase contact compartment performance. • Phase ratio up to 70 : 1 The hydrodynamic conditions can be in- • Materials: fluenced by varying four geometrical pa- - Stainless steel / higher alloys rameters: - Special metals, for example, titanium • Turbine diameter - PP / PVDF / PFA • Turbine height - Glass-lined shell • Open area of the partition plates Pilot glass extraction column • Height of the compartments With this flexible geometry, it is possible to optimize performance regarding throughput and mass transfer, even in cases where process parameters and physical properties vary strongly along the length of the column. The agitated Kühni column ECR has a simple and robust construction. The drive unit and the shaft are supported at the top of the column. All common types of shaft seals can be used (stuffing box, mechanical seals). In special cases, the seal can be replaced by a magnetic drive. Only radial slide-bearings are necessary inside the column, which are accessible through hand- or manholes. The sturdy design, the materials selected and the low rotational speed of the agitator in industrial columns (typically 10-70 rpm) allow a practically maintenance free operation.

4 Packed Column ECP

Our extraction column of choice for high throughput

Basic and Mechanical Design Liquid Distributors amplitude) of 800 to 1200 mm/min. Such pulsators are available as standard items The ECP packed column is based on In order to create an even flow profile at and are used with our packed extraction the current state-of-the-art extraction re- either end of the packed bed, both liquid columns. search. The column consists of a packed phases are distributed over the whole bed, distributors for the two liquid phases cross sectional area by suitable distribu- Advantages and Characteristics and, optionally, a pulsator. tors. The design of the dispersed phase distributor requires special attention, in Based on the special design of the pack- Packing order to achieve a narrow droplet size dis- ing and liquid distributors, the ECP col- tribution. umn has a number of advantages: The special Sulzer extraction packing reduces the back-mixing of the continuous If the column is operated without energy • High specific throughput resulting in: phase, thus providing nearly plug flow input (unpulsed), the packed extraction - Small column diameters conditions and a narrow droplet size dis- column is a simple item of equipment - Revamp options of existing columns to tribution. Both are necessary to achieve without any special mechanical features increase capacity high throughput and high efficiency. To fur- and free of moving parts. Often, however, ther increase the separation performance, the liquid has to be pulsed to increase • Capable to deal with challenging physi- additional dual flow plates can be inserted the separation performance and provide cal properties: between the packing elements. a further control parameter for changing - Low density difference < 50 kg/m3 operating conditions. Pulsators are typi- - Low interfacial tension < 2 mN/m cally specified with intensities (frequency - Tendency to form emulsions • Reliable scale-up • Standard turndown 1 : 2 • Column diameter: 50 mm - 5.6 m • Physical properties: - Density difference > 30 kg/m3 - Viscosity up to 100 mPas - Interfacial tension > 1 mN/m • Materials: - Metals - PTFE, PVDF, PFA

Packed internals of a liquid-liquid extraction column

5 Mixer-Settler EMS and Mixer-Settler-Columns ECMS

If you need stage-wise contact but have space constraints

Conventional Mixer-Settler EMS Mixer-Settler-Column ECMS Advantages and Characteristics Mixer-settlers operate with a purely stage- As implied by the name, the mixer-settler- Mixer-settlers EMS have a number of spe- wise contact. After every mixer, there is a column is a series of mixer-settlers in the cific advantages and are suitable for: settler. Mixer-settlers can be operated in a form of a column. It consists of a number • Long residence times (> 15 min): multistage, countercurrent fashion, which, of stages installed one on top of the other, however, is associated with considerable each hydraulically separated, and each - Extraction controlled by residence time piping and instrumentation and also re- with a mixing and settling zone. With this - Reactive extraction systems quires large areas for installation. Because design, it is possible to eliminate some of - Long phase separation times of these implications, mixer-settlers are the main disadvantages of conventional • Extraction controlled by pH (stage-wise only used if process reasons dictate a mixer-settlers, whilst maintaining stage- pH adjustment) stage-wise contact. wise phase contact. • Batch extraction Conventional mixer-settlers are made The mixer turbines do not need to trans- • Stage-wise phase contact either as a box or a tubular type design. port the liquids from stage to stage, there- The latter is also used for glass equipment fore, the rotational speed can be adjusted Specific advantages of the mixer-settler- and when higher design pressures are re- to achieve optimal droplet sizes. Due columns ECMS are: quired. to the requirement for settling of the liquid phases in every stage, the specific • Small footprint The most important element of every mixer throughput achievable in a mixer-settler- is the pump-mix turbine. It has to create • Column like design column is considerably lower in compari- the dispersion and the hydrostatic head • Allows extreme to unlimited phase ratio son to other extraction columns (< 10 m3/ for transport of the liquid. An additional m2h). The mechanical design of the mixer- agitator can be mounted on the same settler-column is comparable to the agi- shaft to optimize the dispersion and en- tated Kühni column ECR. hance the efficiency.

Principle of a mixer-settler-column Examples of mixer-settlers

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6 Selection of Equipment

The right choice of equipment is important for a stable operation and optimal performance

Correct Selection of Equipment • Criteria in favor of a packed column: uously innovate our extraction technology, -High throughput with particular attention to the following The correct selection of the type of extrac- two areas: miniplant and modeling. tor is an important step in every extrac- -Limited number of stages required tion project. Various selection aids, such -No moving parts desired Miniplant and Modeling as decision trees, point score tables, and diagrams can be found in the literature. All Additional Criteria The continuous improvement of miniplant extractors have one behavior in common: technology on the one hand, and the the efficiency of the extraction is linked to When examining economic aspects, re- mathematical modeling of extraction col- the specific capacity. Basically, the selec- liability is an important factor. Delayed umns with population balance or Monte- tion of equipment should be made using commissioning, non-performance, down- Carlo methods on the other hand are process and economic criteria. However, time due to equipment failure lead to loss merging at the same time. this can be difficult at the beginning of of production and may bring substantial With the help of these complex models a project when without testing the type costs to rectify. Therefore, besides pure and small laboratory scale droplet experi- and size of the extractor required are not technical criteria, the experience and reli- ments it is possible to predict the perfor- known. ability of Sulzer Chemtech as technology partner are important attributes. When mance of extraction columns in pilot scale in specific cases. This method can be Process Related Criteria cooperating with us, you will find a partner with outstanding test facilities and used to reduce the effort in pilot trials as The agitated ECR column with its inherent numerous reference applications in liquid- basis for the optimized design of an ex- flexibility and wide operating range is the liquid-extraction in the field. Our state- traction column and therefore, reduces most suitable extractor for the majority of of-the-art equipment and proven scale- both costs and time-to-market. cases. Exceptions and special applica- up procedures, in combination with our Future developments are expected to tions, which require a different type of ex- highly skilled employees will provide you extend the application of this method to tractor, can be identified with a few criteria a process solution with guaranteed per- the scale-up of industrial size columns. It that are easily checked: formance. would then only be necessary to establish • Necessity of stage-wise contact the model parameters, with the help of Outlook • Requirement for a residence small laboratory measuring cells. We in- tensely participate in and support this field time > 15 min Research in the field of liquid-liquid extrac- of research within our own test center and tion continues with great effort. We contin- • Criteria in favor of a mixer-settler: by our cooperations with both industrial - Density difference < 50 kg/m3 and university partners. Sections of pilot columns -Interfacial tension < 2 mN/m -Tendency to form emulsions -Low number of theoretical stages

Feed Feed continuous dispersed

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7 Feasibility Study and Trials

Your optimal process solution is guaranteed by our design based on pilot trials in our state-of-the-art test center, and our extensive know-how on our liquid-liquid extraction technology

Optimal Process Solution • Mass balance, including concentrations Rental equipment is available for tests on your premises. If required, we can provide In spite of considerable progress in the • Physical properties (density, interfacial tension, viscosity) you assistance and training for such in- research and development of liquid-liquid house tests. extraction technology, it is still not possible • Liquid-liquid equilibrium data to design an extractor from first principles. The miniplant size extractor ECR 32 is well Therefore, a systematic test method is Lab and Pilot Trials suited for miniplant piloting of complete very important. We offer you decades of processes including recycle streams. This Laboratory or pilot plant trials are neces- relevant experience to call upon, including small-scale unit proves the feasibility of sary to secure the correct design of ex- the necessary test methods and facilities, the proposed solution and generates pre- traction equipment. We undertake these incorporating various laboratory and pilot liminary scale-up data while requiring only to establish optimal operating conditions, plant equipment. a minimum amount of feed material. and, depending on the extractor type, the The design of an extractor is carried out in most favorable geometric parameters four steps: (size and type of internals). Successful trials allow us to safely scale-up to an in- • Execution of a feasibility study dustrial size unit, and to provide you full • Generation of basic data process guarantees. We are capable of • Pilot trials carrying out all testing, including estab- • Scale-up and design lishing missing physical properties, in our own test center. At this location we have Feasibility Study and Basic Data the following test extraction equipment available: The success of an extractive separation • Extraction columns: step depends largely on finding a suitable extractant. In many cases, based on our -Agitated columns with diameter 32, 60, experience we are able to propose such 150 mm a solvent. However, for new processes, a Agitated liquid-liquid extraction column -Packed columns with diameter 50 and in pilot scale professional and analytical screening of 150 mm suitable solvents is required. The feasibility -Shell: glass of the selected extraction process is then often confirmed in a mini-plant test run. -Internals: SS316L, hastelloy, titanium, zirconium, PP and PVDF In the next step, basic data are estab- • Mixer-settlers: lished which are used as input for subsequent pilot trials and also permit a prelimi- -Tube type mixer-settlers nary sizing of the extractor. These basic -Total volume per stage: 70 ml – 15 l data include: -Material: glass / SS316L

Sulzer test center in Allschwil, Switzerland

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8 Design, Fabrication and Delivery of Equipment

Our extensive experience in design and fabrication in our modern workshops ensures top quality extraction units at your service

Design and Scale-up Manufacturing Service Installation, Commissioning and In the field of liquid-liquid extraction, scal- Every extractor we supply is manufac- Start-up ing-up from pilot units to industrial size tured under our complete responsibility in We have a team of highly experienced equipment is an important and critical modern workshops equipped with state- installation supervisors, who provide con- step. It is not at all straightforward and of-the-art manufacturing tools with certi- struction support services for site-built simple empirical methods will normally fail. fied production processes. Column shells plants, and for the off-loading and installa- Our extensive experience in successful are either manufactured in-house, or by tion of skid-mounted plants. These super- scale-up is supported by our detailed un- approved and qualified sub-suppliers. The visors liaise closely with your construction derstanding of the fundamental theories of latter approach is followed for very large manager, safety officer and mechanical hydrodynamics and mass transfer playing columns, for glass-lined columns, or when contractor, to ensure a safe and trouble- a role in extraction. Our Sulzer extractors special design codes are to be applied. free installation. have often been the topic of scientific re- GMP and CIP are requirements well- search at various universities. Following installation, our process engi- known to us. Design, manufacture and neers undertake plant commissioning fol- certification of many extractors have been lowing a structured plan. The commission- Installation of an industrial scale ECR extraction carried out in accordance with these and ing team is usually headed by the process column other standards. engineer responsible for the plant design. We deliver our extraction technology as a This phase ends with the start-up of the basic design package with state-of-the- process unit followed by a Site Accep- art proprietary equipment. In addition, we tance Test (SAT). Training of your opera- have a specific long-term experience in tors may take place in parallel. fabrication, installation and start-up of our At plant hand-over, you will be provided solutions as skid-mounted units. with final, as-built documentation includ- Advantages of skid-mounted, turn-key ing operating manuals, final lay-out draw- plants are: ings and certificates. A dedicated after sales group ensures the support for spare • Short delivery time through an integrated parts and services during the whole life- fast track execution time of the plant, wherever you are around • Low overall investment costs the globe. • Reduced on-site erection and hook-up Right from plant start-up you can benefit time and thus minimal site disruption from your optimal performing plant solu- • Manufacture of the complete plant under tion based on our liquid-liquid extraction workshop conditions ensuring the high- technology. est quality • Completion of the Factory Acceptance Test (FAT) prior to delivery • Qualification tests prior to plant delivery

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9 Application and Processes

The following examples give you a taste of our collection of successful applications

Sulzer extractors are successfully applied Wet Purification of Phosphoric geometry of the extraction column inter- in every segment of the process industry: Acid nals. • Bulk chemical industry You can find Sulzer extraction columns Pure, food-grade phosphoric acid is cur- in several other processes for removal of • Petroleum industry rently almost exclusively produced using polycyclic aromatics out of oil streams, in • Fine chemical industry the so-called wet process. This process both production and recycling. • Pharmaceutical industry includes three extraction steps with a scrubbing stage in the middle to remove • Biotech industry impurities. Our extensive and specific ex- Purification of Organic Acids • Food industry perience covers a multitude of large col- Dilute aqueous carboxylic and sulphonic • Hydrometallurgy umns installed worldwide. acids can be concentrated and purified with the help of liquid-liquid extraction. A Standard Processes Extraction of Aromatics classic example is the recovery of acetic acid from streams with concentrations of On the basis of decades of both experi- Two agitated ECR columns are used in 5-50 wt%. Higher acids are recovered by ence and in-house development, we the IFP process for recovery of aromatics reactive extraction with amines, which ex- have acquired our own detailed process (benzene, toluene, xylene) from hydrocar- tract the acid by forming reactive bonds. know-how for many classic liquid-liquid bon mixtures. In the first column of this An example is the extraction of lactic acid extraction applications. As a result of this, process the extraction is carried out with following the fermentation process. in some specific applications, our Sulzer DMSO, combined with a backwash. The extractors are used almost exclusively. extreme profiles of flow rate and physical Below we give you an overview of a few properties require a high flexibility in the typical applications where our extraction solutions are used. Loading of a Sulzer Chemtech modular system for recovery of solvents and purification

Solvent Recovery Many standard processes for the separation and recovery of various solvents include extraction: • Recovery of high-boiling, organic components, in low concentrations, from industrial wastewaters (for example, DMF and phenol) • Breaking of azeotropes (for example, pyridine/water) • Removal of water-soluble components from a complex solvent mixture (for example, ethanol, methanol and IPA)

Wastewater stripper with optional decanter including a wastewater example

(Concentration figures quoted in % by weight) Vent

Cooling water

Condenser

Decanter

Feed (100kg/h) 92% Water 8% Ethyl acetate Distillate (8kg/h) >9 7% Ethyla cetate Stripping <3 % Water column

Heat exchanger Heat input

Bottom product (92kg/h) >9 9.99% Water

10 Application and Processes Client Specific Applications

We jointly develop your process solution and tailor our extraction technology to your needs

Client Specific Applications Specific Case Stories Wool Wax Alcohol Our extractors are widely used and tailor- The following case stories demonstrate Wool wax alcohol can be extracted fol- made to your specific applications. In the the variety, complexity and attractiveness lowing the saponification of wool grease. majority of cases the optimum process of liquid-liquid extraction when applied to Another typical application in this field is solution was developed in close coopera- specific fields. the purification step in the manufacture of tion with the customer and based on pilot lanolin (ingredient in cosmetics) from wool trials. We have an extensive track record Caprolactam grease. of numerous, highly customer specific applications based on our liquid-liquid ex- This application presents the successful Separation Based on Polarity traction technology. operation of the agitated Kühni column type ECR in a case with extremely low In numerous applications the separation The following forms a summary of our ref- interfacial tensions in the range of 1–20 of a polar component, like an alcohol or erence list of extracted substances. mN/m. The total product yield with our ketone, out of a non-polar matrix, for ex- process amounts to over 98%. ample monomer or hydrocarbon, is re- Acetic acid, acetonitrile, acetyl-para- quired. In this so-called washing step a aminophenol, alkaloids, ammonia, Pesticides high flexibility and often extreme phase aniline, benzoic acid, caprolactam, ratio is required. catalysts, cresols, diacetone sorbose, Pesticides are produced in the agrochemi- dichlorobenzene, diethylaniline, di- cal industry, where our liquid-liquid extrac- Removal of Phenol from Indus- methylacetamide, dimethylformamide, tion process has proven application serv- trial Wastewaters dimethyl ketone, dimethyl sulfoxide, ing two purposes, namely, the treatment ethanol, guaiacol, hydroquinone, iso- of wastewater and the recovery of the Our extraction process has also proven propanol, lactone, metal ions (like Fe3+, chemical compound for re-use. its use in environmental applications. A Na+, Pd2+, and Au3+), methanol, n- typical example in this field is formed by methylpyrrolidone, monoacetonesor- Used Oil Recycling extraction of phenol from industrial waste- bose, nitrobenzene, nitric acid, pesti- water with a heavy oil. The extract is sub- Our technology has proven use in extrac- cides, pharmaceuticals, phenol, potas- sequently used as burner fuel, thereby tion of polycyclic aromatics from used sium carbonate, potassium chloride, recovering energy in addition. engine and lube oil, to improve the color pyridine, sodium borohydride, sulfate, index and oil quality. sulphuric acid, sulphonic acid, tetra- hydrofuran, triacetoneamine, vanillin, vitamins, water, wine aroma, wool wax Triacetone Amine alcohol, xylenol. A typical example of the application of our extraction process is in the treatment of industrial wastewater with 5% triacetone amine, whereby reductions down to 5 ppm (factor 10'000) can be achieved, with a phase ratio of 35 : 1.

Part of an extraction column on a truck Glass-lined column shell with PVDF internals

11 Liquid-Liquidwww.sulzer.com Extraction Technology

E10556 en 4.2018, Copyright © Sulzer Ltd 2018 This brochure is a general product presentation. It does not provide a warranty or guarantee of any kind. Please, contact us for a description of the warranties and guarantees offered with our products. Directions for use and safety will be given separately. All information herein is subject to change without notice.

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