Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equation C 2H 4O + H 2O HOCH 2CH 2OH This reaction can be catalyzed by either acids or bases, or can occur at neutral pH under elevated temperatures. 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by the hydrolysis of ethylene oxide (EO) which was produced via ethylene chlorohydrin but this method has been superseded by a direct oxidation route. This Project report deals with the design calculations of Mono Ethylene Glycol production from Ethylene Oxide as a feed stock along with their relevant aspects such as instrumentation and process control, Hazop study and cost estimation. Ethylene glycol (C 2H 4(OH) 2) is produced from ethylene oxide through a catalytic reaction with water at higher temperature resulting in a yield of mono-ethylene glycol (MEG), known as glycol, and the by-products di-ethylene glycol (DEG) and tri-ethylene glycol (TEG). ��2uEQ%���V8���2�\���J�q��ڜL��H˲������!必2�'8W=CI�?�%M���. For the same inlet and outlet concentrations given in Part 2, what is the volume of the CSTR? A water/ethylene oxide solution is brought into contact with the resin and the resulting products are separated by distillation. Privacy C2H4O2 + C2H,0 → CH1003 (2) Let's represent these irreversible reactions as A+B - R (1) A +R-S (2) where A = ethylene oxide, B = water, R = ethylene glycol, and S = diethylene glycol. | We describe four other processes that start with formaldehyde, along with two from methanol and one from CO via oxalate esters. (b) Example (a) above was repeated using a polystyrene sulfonic acid resin known commercially as Amberlite IR-120. We also describe a route that uses organic peroxides, along with an old route via ethylene chlorohydrin. Customers around the world rely on us to address strategic and operational challenges. Union Carbide Chemicals And Plastics Company Inc. selective catalysts. If kz/kı = 2.0, what is the concentration of R in the effluent from an isothermal PFR that has the same feed as the CSTR above, and has a concentration of B in the effluent of 38.0 moli. 3. Costs for making EG are higher in this case. PATENTED CASE. Use the link below to share a full-text version of this article with your friends and colleagues. IHS Markit delivers critical analysis and guidance spanning the world's most important business issues. Titration with 0.1 N sodium hydroxide showed the presence of 0.21 mequiv/g of sulfonic acid (70% of theory). We evaluate routes from EO via ethylene carbonate, and from ethylene by direct hydroxylation with water and oxygen. The IHS Markit team of subject matter experts, analysts and consultants offers the actionable intelligence you need to make informed decisions. Sustainability drives the entire IHS Markit enterprise. ethylene glycol from renewably sourced ethanol, by producing the ethylene oxide intermediate in a two-step reaction process.² Novel research at Leiden University, entitledDirect conversion of ethanol into ethylene oxide on gold based catalysts, explores a catalyst which produces ethylene oxide in one step, showing potential for a Unlimited viewing of the article PDF and any associated supplements and figures. (a) A solution having a water to ethylene oxide weight ratio of 10:1 was passed over a bed of 2 g of Nafion (6% wt) on silica made according to Illustrative Embodiment I at a temperature of about 92Â° C. and an LHSV of 0.025 hour-1. Please check your email for instructions on resetting your password. In addition, we examine a variant in which all of the EO is purified for sales. There is no Ror Sin the feed. View desktop site, Problem 7-16 (Level 2) Ethylene glycol (C2H,02) is manu- factured by the hydrolysis of ethylene oxide (C2H40) C2H2O + H2O = C2H6Oa However, ethylene glycol, the desired product, can react with ethylene oxide to give diethylene glycol (C.H1003). Analysis showed 72.8% fluorine, 25.0% carbon, 0.7% sulfur, and 0.15% hydrogen. Box 8361, South Charleston, WV 25303, Equilon Enterprises LLC, P.O. Monoethylene glycol (MEG) accounts for more than 90% of the market for EG. 1, chemical engineering questions and answers. It's how we do business by guiding our values and culture on the notion that we can make a difference. Join a global business leader that is dedicated to helping businesses make the right decisions. US4165440A US05/838,526 US83852677A US4165440A US 4165440 A US4165440 A US 4165440A US 83852677 A US83852677 A US 83852677A US 4165440 A US4165440 A US 4165440A Authority US United States Prior art keywords ethylene oxide water ion exchange resin acid ion Prior art date 1976-10-06 Legal status (The legal status is an assumption and is not a legal conclusion. (mono, di or tri ethylene glycol) distribution is the water to ethylene oxide ratio in the starting material and only marginally on the reaction pH and te mperature (Rebsdat & Mayer, 2005). ethylene oxide. HF. US4165440A US05/838,526 US83852677A US4165440A US 4165440 A US4165440 A US 4165440A US 83852677 A US83852677 A US 83852677A US 4165440 A US4165440 A US 4165440A Authority US United States Prior art keywords ethylene oxide water ion exchange resin acid ion Prior art date 1976-10-06 Legal status (The legal status is an assumption and is not a legal conclusion.