Regeneration method for di-mix honey de-kalium-sodium resin

A sodium resin and potassium removal technology, which is applied in ion exchange regeneration, chemical instruments and methods, purification using ion exchange materials, etc., can solve the problems of consuming a lot of manpower and material resources to clean the evaporation tank, affecting heat transfer, and large energy loss. Achieve the effects of saving boiler cleaning costs, improving regeneration efficiency, and saving heat energy

Inactive Publication Date: 2009-04-08
SOUTH CHINA UNIV OF TECH +1
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AI Technical Summary

Problems solved by technology

In view of the fact that the calcium content in the thin juice is as high as 200-300mg/L, entering the evaporation and concentration process will cause serious fouling of the evaporation tank, which wil...

Method used

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  • Regeneration method for di-mix honey de-kalium-sodium resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] As shown in Figure 1, a kind of regeneration method of two mixed honey depotassium sodium resins, comprises the following steps:

[0023] (1) After the beets are shredded, the purity of beet thin (sugar) juice is greater than 90%, and the Brix is ​​14°Bx , Ca 2+ The content is 270mg / L. The dilute (sugar) juice is decalcified by electrodialysis at 45°C (1-1 in Figure 1) to obtain Ca 2+ Concentrated electrodialysis waste liquid with a content of 2.0 g / L and decalcified beet juice with a calcium ion content of less than 10 mg / L.

[0024] (2) Use 2BV electrodialysis to concentrate the waste liquid at 60 ℃ to commercially available 001×7 type strong acid cation exchange resin (Na + ) for static transformation treatment 2h (1-2 in Fig. 1), get Ca 2+ type cation exchange resin and Ca 2+ Beet decalcified dilute (sugar) juice with a content of less than 10 mg / L. Gained beet decalcified thin (sugar) juice is concentrated into a syrup with a Brix of 65°Bx through four-effect...

Embodiment 2

[0029] Example 2 is similar to Example 1. The difference is: in the double carbonic acid process, at 30 ° C with Ca 2+ The sugar beet clear juice with a content of 300mg / L and a Brix of 13°Bx directly enters the electrodialyzer for treatment, with 3BV, Ca 2+ Concentrated electrodialysis waste liquid with a concentration of 4.0g / L was statically regenerated at 80°C for 3 hours or prepared Ca 2+ The type ion exchange resin is used for the removal of potassium and sodium from the mixed honey, and the sugar juice flows out of the electrodialyzer and then enters the sulfur bleaching process for sugar production. After the clear juice is treated by the electrodialyzer, the Ca 2+ The removal rate remained above 90%. When removing potassium and sodium from the two-mixed honey, the brix is ​​70°Bx, the sugar content is 60%, the temperature is 65°C, and Na + and K + Two mixed honeys with contents of 0.9g / L and 1.8g / L were diluted to 55°Bx with resin washing water, heated to 60°C an...

Embodiment 3

[0031] (1) After the sugarcane is squeezed, it is pre-ashed, filled with one carbon, filled with two carbons, bleached with sulfur, and filtered to obtain syrup (sugar) juice. The purity is greater than 90%, and the Brix is ​​12°Bx, Ca 2+ The content is 200mg / L. Dilute (sugar) juice is treated with an electrodialyzer at 25°C to obtain Ca 2+ Concentrated electrodialysis waste liquid and decalcified dilute juice with a content of 3.0g / L.

[0032] (2) with Ca 2+ Content is 3.0g / L 4BV dilute juice electrodialysis method desalination concentration waste liquid, at 90 ℃ to commercially available ZGC151 type strong acid cation exchange resin (Na + ) for 4h static transition processing, get Ca 2+ type cation exchange resin and Ca 2+ Thin sugar cane (sugar) juice with a content of less than 10mg / L. The obtained sugarcane thin (sugar) juice is concentrated into a syrup with a Brix of 65°Bx through four-effect evaporation, and the syrup can be boiled with one granulated sugar and tw...

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Abstract

The invention discloses a regeneration method of secondary mixed honey de-potassium and de-sodium resin, which includes the following steps: Ca<2+> of dilute juice or secondary clarified juice is removed by an electrodialysis method; electrodialysis concentrated waste liquid is used for transforming Na<+> ionic exchange resin; the obtained Ca<2+> ionic exchange resin is used for removing potassium and sodium from the secondary mixed honey; the secondary mixed honey de-K<+> and de-Na<+> resin is regenerated effectively by the electrodialysis concentrated waste liquid. Therefore, after the reaction is carried out again and again, the Ca<2+> in the dilute juice or the secondary clarified juice is exchanged with K<+> and Na<+> in the secondary mixed honey by passing over an evaporating pot under the condition of not consuming extra calcium salt, and the K<+> and Na<+> in the secondary mixed honey are reduced and at the same time, the concentration of the Ca<2+> of the dilute juice is reduced from 200 to 300mg/l to less than 10mg/l. The invention can be applied to the de-potassium and de-sodium of the secondary mixed honey and the decalcification of the clarified juice of sugar factories, with regenerants thereof coming from the electrodialysis concentrated waste liquid, thus realizing the coupling of the decalcification of the clarified juice and the de-potassium and de-sodium of the secondary mixed honey. The invention has the advantages of low cost, high efficiency, easy industrialization and continuous production, and the like.

Description

technical field [0001] The invention relates to a new high-efficiency regeneration technology of resin after removing potassium and sodium salts in secondary honey by adopting a cation exchange method in sugar beet or sugarcane sugar industry, and belongs to the field of sugar production engineering. technical background [0002] In beet sugar production, a beet sugar factory with a daily processing capacity of 6,500 tons can produce 280 tons of secondary honey containing 1% (w / w) Na + and 2% (w / w) K + , the Brix is ​​65-75°Bx, the temperature is 65-75°C, the viscosity is about 30CP, and the sugar content is greater than 60-70% (w / w). honey making agent Na + and K + The high content in the second-mixed honey is not conducive to the three-sand boiled sugar, which affects (see Figure 1) the crystallization of white sugar and reduces sugar production. In waste honey from cane sugar + Content 0.6-1% (w / w), Na + The content is 0.3-0.5% (w / w). It can be seen that potassium a...

Claims

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Application Information

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IPC IPC(8): C13D3/14C13B20/14B01J49/00
Inventor 朱思明曾新安于淑娟陈志江
Owner SOUTH CHINA UNIV OF TECH
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