A zero-emission high-efficiency synthetic ester production device and production process

Abstract

The invention discloses a zero-emission efficient synthetic ester production device. The device comprises a reaction kettle, a neutralization kettle, a scrubber, a flash kettle, a buffer tank, a decolorization kettle, a plate and frame filter and a finished product tank which are sequentially communicated. The device separates light and heavy components according to boiling points and recovers alcohol, water and a solvent through three systems, and utilization rates reach 98% or above; the device has the advantages that the production efficiency is high, the product quality is stable, and the energy consumption is low; no wastewater, waste residues and waste gas are emitted in the whole production process; real environmental protection is realized, and the device has great application and popularization value.

Description

technical field [0001] The invention belongs to the field of esterification synthesis, and in particular relates to a zero-emission and high-efficiency synthetic ester production device and a production process. Background technique [0002] As a synthetic oil with excellent performance, ester base oil is widely used in aviation, aerospace, marine, vehicles, heavy machinery, compression machine, polar conditions and other fields. Compared with other synthetic oils, ester oils are easy to grasp because of their molecular structure, and can be easily modified. By increasing or decreasing their molecular weight and number of branched chains, a large number of new varieties with different uses can be derived. [0003] At present, high power, high performance, and special purposes have become the obvious trend of mechanical development, which also puts forward more and more stringent requirements for lubricating oil, such as high temperature resistance, ultra low temperature, lo...

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Problems solved by technology

[0004] However, a large amount of waste water, waste residue, waste gas will be generated in the process of synthetic ester production

First of all, alkyd esterification itself will produce water, which is carried out by the water-carrying agent, and it is difficult to reuse because of the solvent; at the same time, the solvent waste gas and alcohol volatilization gas during the reaction process will produce a lot of odor; during the washing process, it is necessary to Washing with a large amount of lye, and repeatedly washing with deionized water several times the volume of synthetic esters, resulting in a large amount of waste water containing organic matter; and in the final decolorization process, the traditional decolorization column decolorant replacement frequency is fast, resulting in a large amount of waste residue

If the above-mentioned pollutants are discharged, they will cause serious harm to the environment; if additional processing equipment is added or treated by environmental protection companies, the cost will be increased in disguise

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