Abstract
Aim. Epichlorohydrin (ECH) is a widely used chemical product. The production of glycerol has its irreplaceable advantages. With the development of biodiesel industry, it will become the main trend of ECH production in the future. Methods. A vacuum evaporation device is built to investigate the effect of evaporation on the treatment of this kind of high-salt wastewater, and the feasibility of the thermodynamic equation of the simulation process is verified. Process. An AHR fuzzy mathematics evaluation algorithm is used to compare experimental values with simulated numerical values in brine. Results and Conclusions. In the multieffect evaporation process simulation with glycerin-containing brine, the amount of salt precipitated by unit steam energy is arranged in order from more to less than that of seven-effect parallel flow evaporation, is greater than five-effect parallel flow evaporation, and is larger than three-effect parallel flow evaporation, which shows that the increase of validity number is beneficial to the utilization of heat.
Highlights
IntroductionIt is the main raw material for the production of glass fiber-reinforced plastics, electrical insulation products, chlorine alcohol rubber, nitroglycerin explosives, and epoxy resins
As a chemical product, epichlorohydrin (ECH) is very useful
Based on an externally heated evaporator, a multieffect evaporation of the brine system and glycerin-containing brine is simulated by the chemical process using PRO II software. e model threeeffect cocurrent evaporation process, five-effect cocurrent evaporation process, and seven-effect cocurrent evaporation process were used. e effects of different multieffect evaporation processes on steam economy of multieffect evaporation are investigated. e following conclusions are drawn
Summary
It is the main raw material for the production of glass fiber-reinforced plastics, electrical insulation products, chlorine alcohol rubber, nitroglycerin explosives, and epoxy resins. It can be used as plasticizer, surfactant, stabilizer, medicine, and solvent, and cellulose ether of cellulose ester resin and cellulose ether, and so on [1]. Dow’s patent for glycerol-based ECH (GTC) requires only half of the chlorine and reduces environmental pollution. Solvay’s new plant Epicero process uses a new series of catalysts and contains several patent applications. ECH has a related production plan [6]
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