Ethylene glycol production pdf file

Ethylene oxide is reacted with co 2, forming ethylene carbonate, which is then hydrolyzed to form meg and co 2. Preferably, the hydrolysis occurs in the presence of a hydrolysis catalyst in order to improve the selectivity to monoethylene glycol. Physical properties the glycol ethers are colorless liquids with a slight odor. Ethylene glycol production chemical engineering page 1. This dose is much greater than exposures expected from use as an inert ingredient. Ethylene glycol may be discharged into wastewater from its production and use. This report provides a qualitative assessment for ethylene glycol eg, diethylene glycol dg, diethylene glycol monomethyl ether dgme, diethylene glycol monoethyl ether dgme, and diethylene glycol monobutyl ether dgbe when used as a pesticide inert ingredient with tolerance exemptions under 40 cfr 180. Ethylene glycol is formed with 90% selectivity and high efficiency, together with hydrogen over a molybdenum disulfide nanofoammodified cadmium sulfide nanorod catalyst. Meek, health canada, ottawa, canada published under the joint sponsorship of the united nations environment programme, the.

Since eo is very reactive and hazardous to handle and ship. 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. Human health aspects please note that the layout and pagination of this pdf file are not necessarily identical to the hard copy first draft prepared by r. Pdf on oct 1, 2019, annaleah bhawanibik and others published production of ethylene glycol from coal find, read and cite all the research. This compound is produced from the hydration of eo which may produce in addition to ethylene glycol diethylene glycols and triethylene glycols. This column describes the production of monoethylene glycol from ethylene via a process similar to shells omega catalytic process. Bakir ethylene glycol has become one of the worlds important industrial chemicals.

Ethylene glycol has become one of the worlds important industrial chemicals. Ethylene glycol is the adduct of ethylene oxide eo and water and. Both reactions are carried out in the liquid phase using homogeneous catalysts. Medical devices are sterilized in a variety of ways including using moist heat steam, dry heat, radiation, ethylene oxide gas, vaporized hydrogen peroxide, and other sterilization methods for. Pdf production of ethylene glycol from coal researchgate. Production of ethylene and its commercial importance in the global market ity 99. All these components of the reaction mixture are successively evaporated and condensed, and only tetraethylene glycol is obtained in the liquid phase from the. Epa has not classified the glycol ethers for carcinogenicity. Ethylene is oxidized with oxygen to form ethylene oxide in a. Pdf production of ethylene and its commercial importance. In the first section, ethylene oxide is produced by ethylene direct oxidation reactions from the study by lou et al.

View detailed import data, price, monthly trends, major importing countries, major ports of ethylene glycol import data and price of ethylene glycol zauba skip to main content. 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. Calculation of ethylene glycol production in a reactionrectification. Co 2 streams from the reaction steps are recycled to the ethylene carbonate reactor. Ethylene glycol can be recovered from the natural gas and reused as an inhibitor after purification treatment that removes water and inorganic salts. It may also enter the environment from its uses in deicing airplane runways and from spills and improper disposal of used antifreeze, coolant, and solvents containing ethylene glycol. Ethylene glycol eg is a major industrial chemical used in the production of polyester fibers and films, antifreeze and vitrification formulations, and numerous other applications. Ethylene glycol basecase process in this paper, the production of ethylene glycol was generated and based on two parts.