Circulating reflux reaction device for sodium borohydride extraction

Abstract

The invention discloses a circulating reflux reaction device for sodium borohydride extraction. The device comprises two hollow reaction kettles, wherein a stirring and heating mechanism is arranged in each of the two reaction kettles; a driving mechanism is fixedly connected to the upper surface of each of the two reaction kettles; a transmission mechanism is fixedly connected to the bottom end in the reaction kettle corresponding to the positions of the two stirring and heating mechanisms. The reaction device is suitable for large-scale production. During use, firstly, a heating plate and afirst driving motor are started, so that the heating plate is used for heating and reacting the raw materials in the reaction kettle; meanwhile, a first driving motor drives a stirring rod to stir internal raw materials and a third bevel gear and a fourth bevel gear drive a transmission rod to rotate at the same time, so that the transmission rod drives conveying blades to convey the raw materials, and a first valve can be opened and closed at the moment, therefore the raw materials are controlled to circularly flow in the two reaction kettles. By means of the device, the raw materials do notneed to be manually controlled to be replaced in the multiple reaction kettles.

Description

technical field [0001] The invention belongs to the technical field of sodium borohydride extraction, in particular to a circulating reflux reaction device for sodium borohydride extraction. Background technique [0002] Sodium borohydride is stable at room temperature and pressure. Sodium borohydride alkaline solution is brownish yellow. It is one of the most commonly used reducing agents. It is relatively stable to moisture and oxygen in the air. It is easy to handle and is suitable for industrial scale. Because of solubility problems, methanol and ethanol are usually used as Solvent, and existing extraction method mainly contains boron trichloride and methanol reaction method, boric acid and methanol direct reaction method, boric anhydride and alcohol direct reaction method and the reaction method of borax and alcohol etc. [0003] However, the existing sodium borohydride extraction equipment needs to use a large number of reaction devices, and a large amount of labor is...

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Problems solved by technology

[0004] The purpose of the present invention is just to provide a kind of sodium borohydride extraction circulating reflux type reaction device in order to solve the above problems, solve the existing sodium borohydride extraction equipment needs to adopt a large amount of reaction devices, and need to adopt a large amount of labor, will The raw materials in the reaction process are replaced inside several reaction devices. Due to the large number of operators, the quality of the product cannot be controlled.

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