Method for recycling rare earth butadiene rubber solvent
The invention belongs to the technical field of solvent recycling and reusing, and particularly relates to a rare earth butadiene rubber solvent recycling and reusing method. Aiming at the problems in the prior art that a rectification process is usually adopted for recovering an n-hexane solvent, b...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention belongs to the technical field of solvent recycling and reusing, and particularly relates to a rare earth butadiene rubber solvent recycling and reusing method. Aiming at the problems in the prior art that a rectification process is usually adopted for recovering an n-hexane solvent, but the operation procedure of the rectification process is complicated and the energy consumption is relatively high, the invention provides a rare earth cis-polybutadiene rubber solvent recycling method which comprises the following steps: filtering a reacted mixed solution, pumping a liquid phase into a buffer tank, and naturally cooling to room temperature; adding a peracetic acid solution and a sodium carbonate solution into the buffer tank, and stirring to obtain a reaction solution; and adding a large amount of water into the reaction liquid to quench the reaction, separating the liquid, washing the organic phase with water for a plurality of times, and drying to obtain the recovered n-hexane. In the recovery |
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