This artical introduces the new technical process of producing sorbitol.
Sorbitol is a raw material widely used in the food industry and pharmaceutical industry.
Raw material:
The reaction medium in the
hydrogenation reactor is:
hydrogen, glucose solution, nickel-aluminum alloy (the nickel-aluminum alloy is in powder form and used as a catalyst).
Produce process:
Nowadays, the sorbitol is produced by continuous hydrogenation.
Raw material preparation:
The aqueous glucose solution needs to be prepared and preheated. And the catalyst slurry needs to be prepared at the same time.
Mixing and dosing:
The prepared glucose solution and catalyst slurry are mixed in blend tank, and added to the continuous hydrogenation system.
This process involves a three-stage continuous hydrotreating reaction, whereby the reaction solution flows successively through three hydrotreaters by means of a turbulent overflow.
Reaction and Separation:
In the hydrogenation reaction system, glucose is hydrogenated with a catalyst to produce sorbitol.
The reaction liquid is exported for gas-liquid separation to separate the small amount of dissolved hydrogen.
Filtration and collection:
The reaction solution is filtered through a catalyst filter to obtain sorbitol crude and catalyst concentrate.
The crude sorbitol is concentrated and purified to obtain the final product sorbitol. The catalyst slurry is collected in a slurry receiving tank for recycling.
