Acidolysis and solvent recycling process and device for producing glyphosate by using glycine method
A solvent recovery device and glyphosate technology are applied in chemical instruments and methods, compounds of Group 5/15 elements of the periodic table, organic chemistry, etc. The large amount of waste liquid and other problems can achieve the effect of large energy saving, reduction of methanol unit consumption, and improvement of comprehensive benefits.
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See the attached page for the process flow chart of acidolysis (hydrolysis) and the flow chart of solvent recovery process.
The present invention uses acid methanol (that is, methanol solution of hydrogen chloride) to replace hydrochloric acid (that is, aqueous solution of hydrogen chloride) in the traditional process to carry out acidolysis (hydrolysis) reaction with synthetic liquid. At the same time, the solvent recovery process is also improved. The methanol and methylal aqueous solution produced in the acidolysis (hydrolysis) process are separated from methylal by rectification. Hydrogen chloride gas, control hydrogen chloride and methanol to reach a predetermined content, obtain acid methanol, and reuse it in the acid hydrolysis (hydrolysis) process; only a small amount of methanol aqueous solution is rectified by methanol tower to produce refined methanol, so as to balance the total amount of materials in the system.
Key processes such as acidolysis (hydrolysis) feedin...
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