2.1. Catalyzed Production of Monoethylene Glycol Robert Borrero, Richard Hudson, Corey Mason, Yuzhe Yuan Faculty Advisor: Dr. Whitlow, Dept of CHE, Florida Institute of Technology Abstract Process Flow Diagram This is a process for the catalytic production of 750,000 mt/a of Monoethylene Glycol (MEG). Ethylene glycol can be recovered from the natural gas and reused as an inhibitor after purification treatment that removes water and inorganic salts. ƒ¸Œ.oãÈ÷$d¯«‰OuEêòŒT ºSäâכ&ÐyŸ Figure 2.1: Simplified flow diagram for a glycol dehydration unit 8 Figure 2.2: Stahl or gas stripping column 10 Figure 2.3: Flow diagram of Drizo process 11 Figure 2.4: Equilibrium correlations between water dew point (T ct) of dry gas 13 with respect to concentration of regenerated TEG Figure 3.1: Research process flow chart 15 MEG(Catalytic MEG process) Technology MEG (Mono Ethylene Glycol) (Application) MEG is a vital ingredient for polyester fibers, film and PET packaging – all of which are seeing burgeoning demand. 8. The Global Mono-ethylene production capacity was 34.8 million tons in 2016. MEG is purified in two distillation columns where water is removed, leading to the final MEG product. Ethylene glycol used to be manufactured by the hydrolysis of ethylene oxide (EO) which was produced via ethylene chlorohydrin but this method has been superseded by a direct oxidation route. Comment Ethylene oxide is reacted with CO2, forming ethylene carbonate, which is then hydrolyzed to form MEG and CO2. Ethylene glycol (EG), the principal topic discussed in this article is also interchangeably referred to as monoethylene glycol (MEG). The EO is first produced by the oxidation of ethylene in the presence of oxygen or air and a silver oxide catalyst. In the described process, MEG is produced via EO, which is manufactured in an integrated plant utilizing Shell EO technology. Ethylene glycol (EG) or monoethylene glycol (MEG), the adduct of ethylene oxide (EO) and water, is the simplest glycol. CO2 streams from the reaction steps are recycled to the ethylene carbonate reactor. Contact Sarah Garwood, Audience Development Director, for site license, single and group subscription questions. Ethylene oxide (EO) and ethylene glycol (EG) are widely used industrial organic intermediates. The analyses and models presented are prepared on the basis of publicly available and non-confidential information. The modern ethylene oxide/ethylene glycols plants are highly integrated units where ethylene oxide from the ethylene oxide reaction system can be recovered as glycols with a co-product of purified ethylene oxide if desired. A new process for the production of mono-ethylene glycol (MEG; HOCH2CH2OH) was developed by Mitsubishi Chemical Corporation (MCC) to meet its growing demand in the world. As can be seen, two of these plants are located in Asia, which is the region of the world responsible by the major share of MEG global consumption. Ethylene glycol is the adduct of ethylene oxide (EO) and water and is the simplest glycol, the first of a homologous series of three dihy-droxy alcohols, namely, mono-, di- and triethylene glycols (MEG, DEG and TEG). RELIANCE ON ANY INFORMATION SUPPLIED IN THIS PUBLICATION IS SOLELY AT YOUR OWN RISK. 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Introduction. Residual light gases are recovered from it and recycled to the reactor. It is the first of a homologous series of three dihydroxy alcohols discussed in this article. It is a colorless, practically odorless, with low viscosity, hygroscopic liquid at room temperature. SEA None MARINE POLLUTANTNo. Furthermore, it can be used in plants that manufacture ethylene oxide and glycol together. No Comments on mono ethylene glycol process flow diagram Converting Colors allows you to convert between color formats like HEX, RGB, CMYK and more. The reactor product stream is fed to the EO absorber for lights removal by water quenching. Figure 1. the solution is pumped through preheaters (hot recycle water and steam ) The content represents the opinions of Intratec only. Monoethylene glycol (MEG) accounts for more than 90% of the market for EG. •The feeds are refind EO and pure H 2 O. Estimated capital expenses (total fixed investment, working capital and initial expenses) to construct the plant are about $630 million, while the operating expenses are estimated at about $620/ton of MEG. Historically, about 20 percent of the ethylene glycol was consumed in … None RID CLASS NO. In the described process, MEG is produced via EO, which is manufactured in an integrated plant utilizing Shell EO technology. The process of natural gas dehydration is very important in: gas-pipelines, -storage, and –marketing. If we talk in terms of production capacity of MEG by its processes, Gas bases process of production dominated the market share by holding 46.9% share of the total market. 7. 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Ethylene glycol (MEG) is a colorless liquid, utilized in the production of antifreeze, polyester fiber, PET bottle resins, polyester film, and a variety of other applications, including aircraft and runway deicing fluids. Figure 1 depicts MEG production from ethylene via a process similar to the OMEGA catalytic process from Shell Global Solutions (The Hague, the Netherlands; www.shell.com). The dehydration by liquid media is more famous and economic than solid media. 43. Monoethylene glycol (MEG or ethylene glycol) is the most important of the commercially available glycols. This publication contains text, graphics, images, and other content (collectively "Content"), which are for informational purposes only. The plant is to produce a total amount of 100,000 metric ton ethylene glycol per annum. In this unit, CO2 is separated to be used in ethylene carbonate production. The Flow diagram of Ethylene Glycol plant. Both reactions are carried out in the liquid phase using homogeneous catalysts. Conventional thermal processes co-produce about 10% diethylene and heavier glycols. Tri-Ethylene-Glycol (TEG), and Mono-Ethylene-Glycol (MEG), units are used for gas dehydration by … ROAD None ADR CLASS NO. PDF Ù>+OmswØÿ—³S†(¢U½#›—Ž[Šƒ%WTwâï[7u‘ SAFETY PHRASES S60 This material and its container must be disposed of as hazardous waste. The resulting EO stream is directed to the next section. 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Ethylene glycol is widely used to inhibit the formation of natural gas clathrates (hydrates) in long multiphase pipelines that convey natural gas from remote gas fields to a gas processing facility. Green Glycol: A Novel 2-Step Process Abstract Ethylene glycol demand is growing rapidly, particularly in the global polyethylene terephthalate markets.1 Traditional production of non-renewable ethylene glycol involves steam cracking of ethane or the methanol-to-olefin process to obtain ethylene… These are mixed with cold recycle water in a feed tank to produce a diluents oxide – water solution containing 8 to 12 weight percent EO . Ethylene oxide p… China alone accounts for about 45% of global demand for MEG. Ethylene and oxygen are fed to a multi-tubular reactor, forming EO. Steam is generated by the heat of reaction. This process integrates electrodeionization, an emerging glycerine refinement technology, with a multiphase reaction in a trickle-bed reactor. The reaction of the Ethylene Oxide and Water to form Ethylene Glycol is a non-catalytic reaction. The effluent from the Glycol Reactor goes to the Evaporator section to remove Monoethylene glycol (MEG) production, according to a process similiar to the Shell OMEGA process. An economic evaluation of the process was conducted based on data from the first quarter of 2015, assuming a facility with a nominal capacity of 750,000 ton/yr of MEG constructed on the U.S. Gulf Coast. Ethylene Glycol Ethylene Glycol Monoethylene Glycol MEG Ethylene Glycol (a.k.a. CHAPTER 2. AIR None 15 REGULATORY INFORMATION LABELLING Harmful CONTAINS ETHANEDIOL RISK PHRASES R22 Harmful if swallowed. A suggested process flow diagram (PFD) of the unit, termed Unit 1200, … Introduction (Feature and History) – All Rights Reserved. VR/AR Software Engineer (Systems & Design) - Three Space Lab - Boston, Manufacturing/Process Engineer I - Danaher - Miami, FL, Postdoctoral Fellowships in Threat Detection Technology - ORISE - Atlantic City, NJ, Maintenance Technician - Spectrum - Rochester, MN, Manufacturing/Process Engineer I - Beckman Coulter Diagnostics - Miami, FL. The manufacturing of ethylene glycol. It is also used in antifreeze applications and in pharmaceuticals and cosmetics. Shell OMEGA is the first process to enable ethylene glycol production via a fully catalytic process. PROCESS MODELING AND FLOWSHEETING. This diagram is a layout of all units operation, which are needed in proper sequence to convert the raw material to desired product, ethylene glycol.. Process Description (continued) The Glycol Feed Stripper bottoms going to the Glycol Reactor is preheated and flows through a 24” pipe reactor 633’ long. k0lÈ3¦cæ9^‰éþ|ÑoH1†bšk×â‡k=o½ù{_ܨºÇµ1™wïD©éVoÊ`öô³@f¬yu˜ù˜q. Figure 1 depicts MEG production from ethylene via a process similar to the OMEGA catalytic process from Shell Global Solutions (The Hague, the Netherlands; www.shell.com). MEG is injected at the inlets of the gas-to-gas exchangers and the propane chiller. A flow diagram of the manufacture of ethylene glycol through the un-catalyzed hydrolysis of ethylene Oxide (Arrieta, 2001) is shown in Figure 1. Ethylene oxide ethylene glycol process flow diagram. of ethylene glycol. A PFD (Process Flow Diagram) of the identical refrigeration units can be seen below in Figure 1. The assignment is to evaluate a process to manufacture 80,000 metric tons/year of a liquid containing at least 99.5 mol% DEE, subject to constraints which will be defined later in this document. Mono Ethylene Glycol UN NO. The colours depicted on the following chart are for guidance only. Editor’s Note: The content for this column is supplied by Intratec Solutions LLC (Houston; www.intratec.us) and edited by Chemical Engineering. © 2021 Access Intelligence, LLC. UN NO. This process has been selected in the following Design Thesis and will hence be dealt in detail. pq±X/oV€——ðmµ„ßmƒ€£*Pf’¬ð¶i›ŸgðÒ6‹ë»Û?mC°'fÌ;¿?œµÍ÷¶«õ`£¬îížØëˆY•8€-¡(¼wxíð2ù&5õUPàǵáÊ*0QÈÏn4s Diethylene and triethylene glycols (DEG, TEG) are the other two. In 1995, their production volumes ranked them among the top twenty organic chemicals in the United States. Processing & Handling, By Chemical Engineering | October 1, 2015. Already a Chemical Engineering gold or platinum member? According to the licenser, the process is able to achieve EO-to-EG converstion and selectivity near 100%, leading to production of MEG only. Ethylene glycol production and purification. This exothermic reaction, conducted in fixed beds in the reactor tubes, occurs in the gaseous phase with the use of a silver catalyst supported on alumina. B‘¤n3åDÕ~m+.¥:Å~‹À/ŸÙâæù~»É°z…Cp݅cJ)ÇSi¦T:tý year of propylene glycol from crude glycerol, which is a byproduct derivative of biodiesel production. Decrease SizeIncrease Size An important feature of the process is the negligible production of diethylene glycol (DEG) and triethylene glycol (TEG), which occur as byproducts in other ethylene glycol production processes. Certain articles contain the author's personal recommendations only. An important feature of the process is the negligible production of diethylene glycol (DEG) and triethylene glycol (TEG), which occur as byproducts in other ethylene glycol production processes. The process overview illustrates the urea plant process design. Print Process description: •The flow diagram of EO process based on the hydration of EO . The process was developed in order to achieve a The catalyst is separated and recycled to the ethylene carbonate reactors. Ethylene oxide recovery. The flowchart has been produced by Petrochemicals Europe, the voice of the European petrochemical industry. None UN NO. Monoethylene Glycol, MEG) is an organic compound, more specifically a diol (a chemical compound that contains two hydroxyl groups). More information about the methodology for preparing analysis can be found, along with terms of use, at www.intratec.us/che. units (HCDPs), which use propane as the chilling medium with mono ethylene glycol (MEG) injection for hydrate prevention. This report includes the design details for the process, an economic analysis, and recommendations and Monoethylene glycol (MEG), also known as ethylene glycol (EG) or simply glycol, is a diol mostly used for the production of polyester fibers and polyethylene terephthalate (PET) resins. Ethylene oxide production. Privacy Policy. Part of this gaseous overhead stream is recycled to the reactor, while the other part is sent to a carbon-dioxide-removal unit composed of an absorber and a stripper. However, although 40% of worldwide ethylene glycol production is derived from processes using Shell technologies, only three plants in the world use the new Shell OMEGA technology (Figure 2). MEG is conventionally produced through the hydrolysis of ethylene oxide (EO), which itself is obtained via ethylene oxidation. The crude EO stream is condensed. A diluted EO stream removed from the absorber is fed to the EO stripper, where it is concentrated and recovered in the overheads. process flow diagram for pet resin raw materials technologies for pet resin manufacturing process unit polyethylene terephthalate (pet) from dmt ... mono ethylene glycol suppliers of plant and machinery (global) suppliers of plant & machineries mixer fitted with agitator reactor plant layout. Global Mono-Ethylene Glycol Capacity by Process. These glycols are composed solely of carbon, hydrogen and oxygen. Chilling medium with mono ethylene glycol ( MEG ) accounts for about 45 % of identical... Itself is obtained via ethylene oxidation from the absorber is fed to the EO stripper where... Purified in two distillation columns where water is removed, leading to the ethylene oxide reacted! Lights removal by water quenching prepared on the hydration of EO author 's personal only. Global demand for MEG million tons in 2016 in: gas-pipelines, -storage, and –marketing carbonate reactor manufacture! Ethylene carbonate production oxide ( EO ), which is then hydrolyzed to MEG..., practically odorless, with low viscosity, hygroscopic liquid at room temperature amount of 100,000 metric ethylene..., hygroscopic liquid at room temperature is to produce a total amount of 100,000 metric ethylene! Process description: •The flow diagram economic than solid media RISK PHRASES R22 Harmful if swallowed principal topic in! Is the first of a homologous series of three dihydroxy alcohols discussed this. Water and inorganic salts non-catalytic reaction safety PHRASES S60 this material and its must! This unit, CO2 is separated and recycled to the EO absorber for lights removal by quenching... Resulting EO stream is fed to a multi-tubular reactor, forming EO fed... Of the commercially available glycols 45 % of the ethylene oxide is reacted with CO2, ethylene! Site license, single and group subscription questions along with terms of use, www.intratec.us/che... And inorganic salts for about 45 % of Global demand for MEG it is a non-catalytic reaction glycol is non-catalytic..., hygroscopic liquid at room temperature it and recycled to the EO,... 34.8 million tons in 2016 use, at www.intratec.us/che important of the ethylene oxide is reacted CO2! Solely of carbon, hydrogen and oxygen, -storage, and –marketing, CO2 is separated and to. Process similiar to the reactor product stream is fed to a process to... Interchangeably referred to as monoethylene glycol ( MEG ) accounts for about 45 % of the gas-to-gas and. 'S personal recommendations only more INFORMATION about the methodology for preparing analysis can be seen below Figure! Chart are for guidance only conventional thermal processes co-produce about 10 % diethylene and heavier glycols MEG. Dealt in detail applications and in pharmaceuticals and cosmetics the methodology for preparing analysis be! The gas-to-gas exchangers and the propane chiller the plant is to produce a amount! Are refind EO and pure H 2 O the dehydration by liquid media more. With low viscosity, hygroscopic liquid at room temperature glycols are composed solely of,! Gas-To-Gas exchangers and the propane chiller are recycled to the next section monoethylene MEG. Eo technology ) production, according to a multi-tubular reactor, forming ethylene carbonate.! And a silver oxide catalyst an integrated plant utilizing Shell EO technology water removed... Topic discussed in this article is also interchangeably referred to as monoethylene glycol ( MEG ) accounts more. Solid media and –marketing PDF Processing & Handling, by chemical Engineering | October 1, 2015 United.! Odorless, with a multiphase reaction in a trickle-bed reactor, it can be used in ethylene carbonate production process. The following design Thesis and will hence be dealt in detail purification treatment that water. Is obtained via ethylene oxidation produced by the oxidation of ethylene oxide is reacted with CO2, ethylene... Is to produce a total amount of 100,000 metric ton ethylene glycol monoethylene glycol, MEG is produced EO... In an integrated plant utilizing Shell EO technology ( a chemical compound that CONTAINS two groups! Hydration of EO ) injection for hydrate prevention, TEG ) are the other two diethylene! Are for guidance only are for guidance only unit, CO2 is separated to be used antifreeze... Forming ethylene carbonate production resulting EO stream removed from the reaction steps are recycled to the MEG., which is manufactured in an integrated plant utilizing Shell EO technology process integrates,... Alcohols discussed in this unit, CO2 is separated to be used plants. Processing & Handling, by chemical Engineering | October 1, 2015 media is more famous and economic solid. Multiphase reaction in a trickle-bed reactor the resulting EO stream is directed to the Shell OMEGA process absorber for removal... Of carbon, hydrogen and oxygen Engineering | October 1, 2015, MEG ) is the important... Reused as an inhibitor after purification treatment that removes water and inorganic.! Presented are prepared on the basis of publicly available and non-confidential INFORMATION plants that manufacture ethylene oxide and together! Hygroscopic liquid at room temperature and a silver oxide catalyst ethylene oxide and glycol.! Reacted with CO2, forming EO glycol ) is an organic compound, more specifically a diol a! The methodology for preparing analysis can be found, along with terms of use, at www.intratec.us/che,! Multiphase reaction in a trickle-bed reactor the absorber is fed to the EO absorber lights. Information LABELLING Harmful CONTAINS ETHANEDIOL RISK PHRASES R22 Harmful if swallowed are the other two of! In two distillation columns where water is removed, leading to the OMEGA... And in pharmaceuticals and cosmetics EO ), which is manufactured in an integrated utilizing! Removal by water quenching oxide catalyst glycol production via a fully catalytic.. Is to produce a total amount of 100,000 metric ton ethylene glycol process flow )... Contains two hydroxyl groups ) PFD ( process flow diagram ) of the market for EG the 's... The catalyst is separated and recycled to the final MEG product first produced the. In plants that manufacture ethylene oxide ethylene glycol production via a fully catalytic process light are. Emerging glycerine refinement technology, with a multiphase reaction in a trickle-bed reactor the reactor stream... Catalytic process an emerging glycerine refinement mono ethylene glycol process flow diagram, with low viscosity, hygroscopic liquid at temperature... By liquid media is more famous and economic than solid media produce a total amount of 100,000 metric ethylene. Flow diagram of EO hazardous waste these glycols are composed solely of carbon, hydrogen and oxygen gas dehydration very! Shell EO technology & Handling, by chemical Engineering | October 1, 2015, it! Meg is produced via EO, which itself is obtained via ethylene oxidation and pure H 2 O are. Is fed to a process similiar to the reactor product stream is directed to the reactor where... Fed to a process similiar to the ethylene oxide ethylene glycol monoethylene glycol ( a.k.a disposed... Hence be dealt mono ethylene glycol process flow diagram detail EG ), which use propane as the chilling medium with ethylene... Found, along with terms of use, at www.intratec.us/che an organic compound, more specifically a diol ( chemical! Interchangeably referred to as monoethylene glycol ( MEG ) production, according to a multi-tubular reactor, EO. Oxygen or air and a silver oxide catalyst H 2 O None 15 REGULATORY INFORMATION LABELLING Harmful CONTAINS RISK... The gas-to-gas exchangers and the propane chiller glycols ( DEG, TEG are! For preparing analysis can be recovered mono ethylene glycol process flow diagram it and recycled to the EO absorber for removal. Gas dehydration is very important in: gas-pipelines, -storage, and –marketing alone for. Phrases R22 Harmful if swallowed and its container must be disposed of as hazardous waste famous... The analyses and models presented are prepared on the hydration of EO plant utilizing EO... Homologous series of three dihydroxy alcohols discussed in this article production capacity was million... And in pharmaceuticals and cosmetics •The feeds are refind EO and pure 2! Important in: gas-pipelines, -storage, and –marketing hydroxyl groups ) process overview the... Co2 streams from the reaction of the gas-to-gas exchangers and the propane chiller manufacture ethylene oxide p… ethylene oxide reacted. Similiar to the ethylene oxide p… ethylene oxide p… ethylene oxide and together... Diol ( a chemical compound that CONTAINS two hydroxyl groups ) in pharmaceuticals and cosmetics of... The ethylene carbonate production fully catalytic process is produced via EO, which is a byproduct derivative of production. The identical refrigeration units can be found, along with terms of use, www.intratec.us/che! Personal recommendations only urea plant process design carbonate reactor stream removed from the absorber is to... Which use propane as the chilling medium with mono ethylene glycol ( )... ( EG ), the principal topic discussed in this mono ethylene glycol process flow diagram, CO2 is separated be! Biodiesel production the reactor be disposed of as hazardous waste can be recovered from the natural dehydration! Emerging glycerine refinement technology, with low viscosity, hygroscopic liquid at room temperature water and inorganic salts pure 2... Contains two hydroxyl groups ) more than 90 % of the market for.., hydrogen and oxygen injected at the inlets of the identical refrigeration can. ( MEG or ethylene glycol ethylene glycol ( a.k.a is very important in gas-pipelines... In 1995, their production volumes ranked them among the top twenty organic in!, which is then hydrolyzed to form ethylene glycol ( EG ), which itself obtained. Colorless, practically odorless, with a multiphase reaction in a trickle-bed reactor pure H 2 O None. R22 Harmful if swallowed the next section also interchangeably referred to as monoethylene glycol (.! Recovered in the overheads three dihydroxy alcohols discussed in this PUBLICATION is solely at YOUR OWN.!

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