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Starch syrup purification and concentration method

A technology for starch syrup and syrup, which is applied in the production of sucrose, sugar, and sugar, can solve the problems of long heating time, low concentration efficiency, affecting the purification effect, etc., to reduce the amount of extra steam and achieve high purity. , the effect of increasing the concentration speed

Inactive Publication Date: 2018-11-06
双桥(厦门)有限公司
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Problems solved by technology

[0004] The ion exchange resin used in the ion exchange process, after repeated use, the functional groups contained in it are prone to saturation, which affects the purification effect; at the same time, the four-effect evaporation requires four series falling film evaporators. The syrup is concentrated multiple times, and the syrup is heated for a long time, which is prone to Maillard reaction to produce pigments, and because of the low single concentration efficiency, the overall concentration efficiency is not high

Method used

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  • Starch syrup purification and concentration method
  • Starch syrup purification and concentration method
  • Starch syrup purification and concentration method

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Embodiment Construction

[0035] refer to Figure 1 to Figure 3 The method for purifying and concentrating starch syrup is further described.

[0036] A method for purifying and concentrating starch syrup, combining figure 1 , including the following steps:

[0037] ① Plate and frame filtration: adding dilute hydrochloric acid or dilute soda ash to the syrup to adjust the pH value between 4.8-5.0 to carry out protein isoelectric point coagulation on the saccharification solution in the previous process, then add filter aid and mix evenly, and pass the mixed syrup into the plate Frame filter press for press filtration. Specifically, the filter aid includes perlite filter aid and activated carbon powder, and the two are mixed at a ratio of 1:1; the dosage of the filter aid accounts for 0.5%-1% of the syrup mass.

[0038] ②Ion filtration: combined with figure 2 , pass the filtered syrup in step ① into several groups of ion exchanger groups 1 to remove impurity ions in the syrup; specifically, the ion...

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Abstract

The invention discloses a starch syrup purification and concentration method and relates to the technical field of syrup production. The method comprises steps as follows: (1) plate frame filtration:syrup is introduced into a plate-and-frame filter press for press filtration; (2) ion filtration: syrup filtered in the step (1) is introduced into multiple ion exchanger groups to remove impurity ions in syrup; cation exchange resin is placed in a cation exchanger, and anion exchange resin is placed in an anion exchanger; (3) evaporation and concentration: the syrup filtered and purified in the (2) is introduced into a falling-film evaporator for evaporation and concentration; the falling-film evaporator is communicated with a heating device heating the inside of the falling-film evaporator;the syrup is preliminarily and rapidly filtered through the plate-and-frame filter press, then, impurity ions in syrup are purified in ion exchangers, and clean and high-purity syrup is obtained; then, the syrup is concentrated in the falling-film evaporator. By means of the heating device, the working temperature of the falling-film evaporator is increased, and the concentration is shortened.

Description

technical field [0001] The invention relates to the technical field of syrup production, more specifically, it relates to a method for purifying and concentrating starch syrup. Background technique [0002] Starch syrup refers to the incomplete hydrolysis product of starch. It is a colorless, transparent, viscous liquid. Good storage, no crystallization, sugar components are glucose, oligosaccharides, dextrin and so on. The content ratio of each component is different due to the difference of hydrolysis degree and production process. [0003] The Chinese invention patent with the authorized notification number CN101565762B discloses a starch sugar production process, including rice grinding, liquefaction, deslagging, saccharification, decolorization, ion exchange, concentration, packaging and other steps. The invention uses ion exchange and four-effect evaporation Concentration technology purifies and concentrates the syrup. [0004] The ion exchange resin used in the io...

Claims

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Application Information

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IPC IPC(8): C13K13/00C13B30/00C13K1/08
CPCC13B30/002C13K1/08C13K13/007
Inventor 冯炳洪伍伯良李惠安王斌连泽彪王莉莉陈怡君
Owner 双桥(厦门)有限公司
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