Continuous preparation method of isomalttol granules

Abstract

The invention discloses a continuous preparation method of isomalttol granules. The continuous preparation method comprises the following steps: (1) performing decoloring, ion exchange and filtering on an isomalttol solution, performing graded concentration by using a multi-effect evaporator and a scraper evaporator, and transferring the isomalttol solution into a material transferring tank for later use; and (2) performing pelletizing by using an inclined rotating disc pelletizer, namely firstly putting isomalttol powder as a crystal seed into the inclined rotating disc pelletizer, further adding the concentrated isomalttol liquid into the inclined rotating disc pelletizer, and preparing the isomalttol granules by using the inclined rotating disc pelletizer. According to the continuous preparation method, the isomalttol solution is adopted as a raw material, an isomalttol concentrated liquid and an isomalttol powder crystal are mixed to prepare granular isomalttol by using the inclined rotating disc pelletizer, the whole production process has continuous material feeding and discharge, in addition, a drying procedure is not needed, no mother liquid is needed, either, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of isomalt production, in particular to a continuous preparation method of isomalt granules. Background technique [0002] Isomalt, also known as hydrogenated palatinose, also known as isomalt, is the only known functional sugar alcohol produced from sucrose. It has low calorie, low hygroscopicity, high tolerance, It has the characteristics of pure sweetness and is an excellent substitute for sucrose, starch sugar and other sugar alcohols. The product has high safety, and the U.S. FDA granted it GRAS (Generally Recognized as Safe) status, and there is no limit to its daily intake. In 2008, the Ministry of Health announced that it was listed as a new resource food. It is popular because of its superior performance characteristics and high safety. It occupies a dominant position in foreign sugar-free hard candies. The demand is large, but the production is difficult. At present, only a few companies in the ma...

AI Technical Summary

Problems solved by technology

Disadvantages of this technology: Due to the high viscosity of liquid isomalt, the material is easy to stick to the inner wall of the twin-screw extruder barrel during the mixing process, and it is easy to form a thick layer of sugar shell, which reduces the rotatable diameter of the screw. space, it is easy to cause the arms of the screw to break; at the same time, due to the material sticking to the wall, the material on the inner wall of the cylinder needs to be cleaned after each batch of products is processed, which is labor-intensive and time-consuming, and cannot be continuously produced; Maltulitol products require a certain number of twin-screw extruders, which require a large area of ​​equipment and a large number of operators

Disadvantages of this technology: the liquid isomalt for spraying has a high water content (mass concentration is only 40% to 70%), and a large amount of high-temperature hot air is required to take away the moisture in the material during the spray curing process, and the production energy consumption is high. , low efficiency; at the same time, the powdered sugar alcohol with large water content has poor fluidity and difficult pipeline transportation; the spray tower equipment covers a large area and high investment, and a spray drying tower only requires nearly ten million yuan in equipment investment

Disadvantages of this technology: This method requires repeated crystallization to obtain the desired product, the process operation is complicated, and the cooling crystallization process is time-consuming; cooling crystallization separation will produce a large amount of mother liquor (molasses), and the utilization rate of raw materials is not high

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