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发布于:2018-2-13 17:11:19  访问:161 次 回复:0 篇
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Ethylene glycol is produced from ethylene, via the intermediate ethylene oxide. Ethylene oxide responds with waters to produce ethylene glycol. Ethylene glycol (Monoethylene Glycol) inside pure form, it is an unsmelling, colorless, syrupy liquid along with a sweet taste.
Monoethylene glycol (MEG) is a crucial raw substance for commercial applications. A primary use of MEG is in the creation of polyester (PET) resins, shows and components. In addition , MEG is important within the manufacturing of antifreezes, coolants, aircraft anti-icer and deicers and solvents.
Ethylene glycol disrupts hydrogen bonding any time dissolved inside water. Real ethylene glycol freezes in about −12 °C (10. 4 °F), but when blended with water, the particular mixture doesn‘t readily decide upon, and therefore the very cold point on the mixture is actually depressed. Specially, a mixture of 60% ethylene glycol and 40% water freezes at −45 °C (−49 °F). Diethylene glycol plays its part similarly. It really is used as a de-icing substance for windshields and aircraft. The antifreeze capabilities associated with ethylene glycol have made it a factor of vitrification (anticrystallization) beverages for low-temperature preservation involving biological tissue and areas. Mixture of ethylene glycol and also water can even be chemically mentioned as glycol concentrate/compound/mixture/solution.
However , the particular boiling position for aqueous ethylene glycol increases monotonically with improving ethylene-glycol small percentage. Thus, the usage of ethylene glycol not only depresses the very cold point, but elevates often the boiling point such that the operating collection for the heat-transfer fluid is definitely broadened to both the ends in the temperature level. The increase throughout boiling temp is due to pure ethylene glycol having a greater boiling level and decrease vapor tension than real water; there is absolutely no chemical securing against boiling of the fluid phase with intermediate combinaison, as there exists against freezing.
Because of its higher boiling stage and appreciation for drinking water, ethylene glycol is a useful desiccant. Ethylene glycol is definitely widely used to inhibit typically the formation connected with natural gas clathrates (hydrates) with long multiphase pipelines that convey gas from remote control gas fields to a gasoline processing capability. Ethylene glycol can be hauled from the propane and reused as an inhibitor after purification treatment that will removes water and inorganic salts.

Natural gas is dried by ethylene glycol. With this application, ethylene glycol flows down through the top of a tower along with meets the rising blend of water vapour and hydrocarbon gases. Dried out gas from the from the the top of tower. Often the glycol and water are usually separated, and the glycol remade. Instead of removing water, ethylene glycol could also be used to depress the heat at which hydrates are made. The wholesomeness of glycol used for hydrate your muscles suppression (monoethylene glycol) is normally around 3 quarters, whereas typically the purity of glycol utilized for dehydration (triethylene glycol) is normally 95 to be able to more than 00%. Moreover, the injection rate for hydrate your muscles suppression is really a lot lower than the actual circulation pace in a glycol dehydration podium.
MEG is often a basic source used for programs that require:
· Chemical intermediates regarding resins
· Solvent couplers
· Freezing point depressive disorder solvents
Caustic Soda Jellyfish
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