Continuous lithium alkylide production system

Abstract

The invention belongs to the field of chemical raw material production equipment and discloses a continuous lithium alkylide production system. The continuous lithium alkylide production system comprises a double-screw extruder (1), a mixer (2), a metal lithium nozzle (9) arranged in the mixer (2), a solvent nozzle (8) and an L-shaped reactor (3), wherein one end of the metal lithium nozzle (9) is communicated with the double-screw extruder (1), the solvent nozzle (8) is connected with a solvent storage device by virtue of a solvent supply pipeline (7); and the top of the L-shaped reactor (3) is connected with the bottom of the mixer (2) by virtue of a pipeline, and the top of the L-shaped reactor (3) is also provided with a halogenated alkyl adding port (10). By adopting the continuous lithium alkylide production system disclosed by the invention, continuous and automatic production of lithium alkylide is realized. Adding speed of each material and temperature and pressure parameters of the reactor are controlled by virtue of computer simulation, so that the aim of safely and continuously producing the lithium alkylide is achieved.

Description

technical field [0001] The invention belongs to the field of chemical raw material production equipment, and relates to a continuous production system of alkyllithium. Background technique [0002] The traditional process of preparing alkyllithium adopts an interstitial production process that separates sand making and reaction. Lithium sand prepared at high temperature has high activity and is very dangerous to store or transfer. It is generally stored in white oil. Due to containing white oil, the application of alkyllithium is greatly restricted, and it cannot be used in liquid crystal, medicine, pesticide and other fields. If the white oil is removed before the reaction with the haloalkyl group, special processes and equipment are required, which is time-consuming and labor-intensive. [0003] To sum up, the equipment for the production of alkyllithium by the interstitial method is relatively large, and the production control cannot realize automatic control, and most o...

AI Technical Summary

Problems solved by technology

Due to the white oil, the application of alkyllithium is greatly limited, and it cannot be used in liquid crystal, medicine, pesticide and other fields

If the white oil is removed before reacting with the haloalkyl group, special processes and equipment are required, which is time-consuming and labor-intensive

[0003] To sum up, the equipment for the production of alkyllithium by the gap method is relatively large, and the production control cannot realize automatic control, and most of them are manual operations, which can neither guarantee the consistency of product quality nor have hidden dangers in the production process.

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