Application of evaporation system in cirric acid deep processing

First, clean and dry the corn cob without impurities and mildew, and then enter the crusher to break it, and then the broken corn flour enters the treatment tank, and add water to filter to get the filter residue. The filter residue enters the hydrolysis tank,adding sulfuric acid, stirring,
heating and heat preservation hydrolysis. The hydrolysate enters the neutralization tank, the calcium carbonate suspension is added, and the pH is adjusted to about 3.6. The temperature is reduced by plate heat exchanger, and enters into centrifuge for separation after standing for a
period of time. Then, the filter residue is washed with clean water and the filtrate is combined. The combined filtrate is heated by plate heat exchanger, mixed with 5% activated carbon in decolorizing tank, heated and stirred, and finally filtered while hot to obtain 70%-80% xylose
solution. In the next step, xylose solution will enter the plate evaporation device or the tube evaporation device for evaporation and concentration. The water in the solution will be heated and evaporated by heating steam, and the xylose solution that fails to meet the concentration requirements will be further increased. After heat exchange of heating steam, it will be cooled to water for discharge or to the preheater for further use of the remaining heat. Finally, when the xylose solution content reaches about 85%, stop heating and get xylose syrup. Xylose was hydrogenated in the reactor under the action of active nickel to obtain xylose solution with high
transmittance. Then the decolorization and evaporation concentration steps were repeated to obtain 50% xylose solution. The solution enters the crystallizer to cool down and crystallize while it is hot to obtain the finished white crystal xylitol.