Ultraviolet transmittance of ethylene glycol produced from coal

This post was last edited by qugd on 2017-1-8 at 14:55. Pure ethylene glycol has weak ultraviolet absorption, but if it contains impurities with double bonds, the ultraviolet absorption becomes quite significant. The quality of the product can be determined by examining the ultraviolet absorption spectrum of ethylene glycol.

In the ethylene oxide hydrolysis process in the petrochemical industry, the substances that have a significant impact are likely aldehydes and other compounds containing double bonds; therefore, they can be removed through hydrogenation or adsorption. Ethylene glycol produced from coal is obtained through hydrogenation, and the degree of hydrogenation is high; therefore, there should not be many double-bonded compounds. However, the oxalate ester has two double bonds, and hydrogenation occurs in two steps. It is not excluded that there may be incomplete reactions or other side reactions in the distribution reaction process. In short, focus on distillation first; of course, if the tower is too tall, the energy consumption will be unmanageable. If that doesn’t work, try hydrogenation or adsorption. Those in the petrochemical industry looking for catalysts and technologies have also suffered. As long as it relates to quality, the same is true for operational management; one should seek help from petrochemical companies such as Qilu Petrochemical or Yangzi Petrochemical. Of course, you should ask Gao Huaxue and Donghua directly; they’re the ones who should be given hundreds of millions, as they’re responsible for solving problems and providing technical support.