Method and equipment for recovering and purifying methyl tert-butyl ether waste solvent

A technology of methyl tert-butyl ether and purification method, which is applied in the fields of ether preparation, ether separation/purification, organic chemistry, etc., can solve problems such as limiting the recovery of solvent outlets, achieve stable operation, save production costs, and achieve good quality effects

Inactive Publication Date: 2021-10-22
四川熔增环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Significantly limited outlets for recovered solvents

Method used

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  • Method and equipment for recovering and purifying methyl tert-butyl ether waste solvent
  • Method and equipment for recovering and purifying methyl tert-butyl ether waste solvent
  • Method and equipment for recovering and purifying methyl tert-butyl ether waste solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Take the waste material containing 95% methyl tert-butyl ether from the waste liquid tank 1, add ethylene glycol with 1 times the volume of the waste material therein, and drain it into the extraction tower 2 for extraction operation. The methyl tert-butyl ether is diverted to the rectification tower 4 for rectification, and the rectification effluent is tested to be qualified and filled with nitrogen for preservation, so as to obtain industrial-grade methyl tert-butyl ether with a purity of ≥99.9% (wt). After the extracted extractant is preheated to 108°C, the low-pressure steam is introduced to carry out air stripping, and the methyl tert-butyl ether and low-boiling impurities are removed, and the above-mentioned extractant is diverted to the vacuum rectification tower 5 for vacuum rectification. Water is removed, and the extractant is recovered, and the purity of the extractant is ≥99.9%. The extraction agent is used in a circular manner, running throug...

Embodiment 2

[0045] Embodiment 2: Take the waste material containing 90% methyl tert-butyl ether from the waste liquid tank 1, add ethylene glycol with 3 times the volume of the waste material therein, and drain it into the extraction tower 2, and carry out the extraction operation. The methyl tert-butyl ether is diverted to the rectification tower 4 for rectification, and the rectification effluent is tested to be qualified and filled with nitrogen for preservation, so as to obtain industrial-grade methyl tert-butyl ether with a purity of ≥99.9% (wt). After the extracted extractant is preheated to 105°C, the low-pressure steam is introduced to carry out air stripping, and the methyl tert-butyl ether and low-boiling impurities are removed, and the above-mentioned extractant is diverted to the vacuum rectification tower 5 for vacuum rectification, Water is removed, and the extractant is recovered, and the purity of the extractant is ≥99.9%. The extractant is recycled.

[0046] The technica...

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PUM

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Abstract

The invention discloses a method and equipment for recovering and purifying a methyl tert-butyl ether waste solvent, which have the beneficial effects that a series of low-energy-consumption procedures for removing impurities in waste methyl tert-butyl ether are carried out through the methods of extraction separation, rectification gas stripping and vacuum rectification recovery; the waste methyl tert-butyl ether with the purity of only 80%-95% (wt) is purified into the industrial-grade organic solvent methyl tert-butyl ether with the purity of more than or equal to 99.9% (wt), so that the waste methyl tert-butyl ether is recycled, the pollution degree of the waste solvent generated in polypeptide production to the environment is reduced, and the production cost is reduced. The purification method provided by the invention also has the advantages of high yield, low energy consumption, good quality, recyclability, simple and convenient production process, stable operation, suitability for industrial production and the like.

Description

technical field [0001] The invention relates to the technical field of solvent recovery and purification, in particular to a method and equipment for recovery and purification of methyl tert-butyl ether waste solvent. Background technique [0002] Polypeptides have the advantages of relatively simple spatial structure, high stability, low or no immunogenicity, and the like. It is mainly administered by small-volume injection, and the dosage is small, which is easy to be applied clinically. Since the polypeptide is an endogenous component of the human body, its half-life in the body is short, and it has the characteristics of good curative effect and few side effects. At present, peptide drugs have been widely used in many therapeutic fields such as endocrine system and immune system. In the future, the amount of drugs used in the market will further increase, and patients' acceptance of peptide drugs will also increase day by day. With the vigorous development of the pept...

Claims

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Application Information

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IPC IPC(8): C07C41/34C07C41/38C07C41/42C07C43/04
CPCC07C41/34C07C41/38C07C41/42C07C43/046
Inventor 范文林鲁加峰黄啟虓张怡
Owner 四川熔增环保科技有限公司
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