PH regulation method in high fructose corn syrup production process

Abstract

The invention belongs to the field of food processing and in particular relates to a pH regulation method in a high fructose corn syrup production process. The pH regulation method in the high fructose corn syrup production process is characterized by comprising the following steps: conveying a material of which the pH value is to be adjusted to a pH regulation front tank, pumping the material into an ion exchange column I and an ion exchange column II which are connected in parallel, and allowing the material to be subjected to ion exchange in the two ion exchange columns, wherein sampling valves are respectively arranged on the lower parts of the two ion exchange columns, and a pH value is monitored through the valves; continuously conveying the material of which the pH value is adjusted to a required pH value to a regulation rear tank after the material reaches the pH value required to be adjusted through a regulation column, sampling and detecting through the sampling valves at fixed time intervals, and determining that the regulation column is ineffective after the pH value is unqualified; converting the material to a standby ion exchange column for continuous feeding.

Description

technical field [0001] The invention belongs to the field of food processing, and in particular relates to a method for adjusting pH in the production process of fructose syrup. Background technique [0002] In the production process of fructose syrup, the core production process of ion exchange and glucose isomerization process. The discharge pH of the material after ion exchange is about 4.5, while the suitable pH value of the glucose isomerization process is 7.5-7.8. During this process, sodium carbonate needs to be added to the material after separation to adjust the pH value of the material from 4.5 to 7.5, and sodium metabisulfite is added to prevent the bacterial fermentation brought in while adding sodium carbonate. [0003] At present, sodium carbonate is used to adjust the pH value. In the process of adjusting the pH value of materials, impurities such as sodium ions, carbonate ions, and sulfite ions are introduced. Complexity. [0004] When sodium carbonate is...

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Problems solved by technology

[0003] At present, sodium carbonate is used to adjust the pH value. In the process of adjusting the pH value of the material, impurities such as sodium ions, carbonate ions, and sulfite ions are introduced. Complexity

[0004] When sodium carbonate is added to introduce impurity ions such as sodium ions and carbonate ions, in order to ensure that the bacteria contained in sodium carbonate do not cause contamination to fructose syrup, it is necessary to add a bacterial inhibitor of sodium metabisulfite, which also increases the concentration of related impurity ions. Introduced, the amount of acid and alkali in the subsequent process will increase, increasing the production cost

[0005] The introduced sodium metabisulfite will be removed by ion exchange in the follow-up process, and discharged to the sewage plant through the sewage. Because of the antibacterial nature of sodium metabisulfite, it will kill the microorganisms that treat sewage in the sewage treatment plant, affect the sewage treatment effect, and may even cause Production accidents in sewage treatment plants

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