Method for clarifying ultrasonically-enhanced sugarcane juice

A technology of ultrasonic strengthening and sugarcane juice, which is applied in the purification of alkaline earth compounds and purification by oxidation/reduction, etc., can solve the problems such as the inability to greatly improve the neutralization reaction speed and degree of reaction, many equipments, and large dosage, so as to avoid product ash content. High, reduce heat transfer efficiency, reduce the effect of production efficiency

Inactive Publication Date: 2012-07-25
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbonic acid clarification process is complex and requires more equipment, and lime and CO 2 The consumption is large and the investment is large, so it has been gradually replaced by the sulfurous acid method
[0003] To develop a new clarification process that has both the advantages of the sulfite process and the carbonic acid process, and has low investment, is a more concerned issue in the field of sugar production; To clarify the process, there are successive publication numbers: CN1317577A, CN101280344A patent technology disclosure, but these methods are only simply combining the two methods, and cannot greatly improve the neutralization reaction speed and reaction degree, and improve the decolorization effect

Method used

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  • Method for clarifying ultrasonically-enhanced sugarcane juice
  • Method for clarifying ultrasonically-enhanced sugarcane juice
  • Method for clarifying ultrasonically-enhanced sugarcane juice

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Embodiment 1

[0021] An ultrasonically enhanced sugarcane juice clarification method, based on the sulfurous acid method and carbonic acid method, it is by first CO 2 and Ca(OH) 2 Added to cane juice and reacted in an ultrasonic reaction device to produce nano-scale ultrafine calcium carbonate particles, these ultrafine calcium carbonate particles are used as sulfur fumigation and SO in the reaction 3 2- and Ca 2+ CaSO formed by the reaction 3 The crystal nuclei, so that the formation of CaSO at a lower degree of supersaturation 3 Process method for clarification of precipitated cane juice.

[0022] Its specific process includes: pre-ashing, primary heating, CO2 filling, sulfur fumigation neutralization, secondary heating and sedimentation process (see figure 1 ), the CO2 filling procedure is to pass into CO in all the mixed juice after pre-ashing and once heating 2 with Ca(OH) 2 , and lead the mixed juice to the ultrasonic reaction device to carry out the CO2 full reaction, and then...

Embodiment 2

[0024] An ultrasonically enhanced sugarcane juice clarification method, the basic principle of which is the same as that of Embodiment 1, the difference is that it only performs a CO2 filling process on a part of the mixed sugarcane juice that has been pre-ashed and heated once, that is: CO2 filling The process is to inject CO into a part of the mixed juice after pre-ashing and primary heating. 2 with Ca(OH) 2 , and lead the mixed juice to the ultrasonic reaction device for CO2 full reaction, and then this part is passed through the sugarcane juice after the CO2 full process in the ultrasonic reaction device and the other part is only pre-ashed, heated once without The mixed juices treated by the CO2 filling process are mixed together for sulfur fumigation and neutralization reaction; for the specific process, see figure 2 ; In the sulfur smoke neutralization process, the ratio of the amount of the treated part through the CO2 full process to the amount of the part not proce...

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Abstract

The invention discloses a method for clarifying ultrasonically-enhanced sugarcane juice, comprising the following steps: preliming the mixed sugarcane juice; heating the mixed sugarcane juice for the first time; leading CO2 and Ca(OH)2 to the mixed sugarcane juice to carbonize the mixed sugarcane juice in a ultrasonic reaction device, wherein the weight of the Ca(OH)2 is 0.01-0.3 percent of the weight of the mixed sugarcane juice, and the molar mass ratio of the CO2 to the Ca(OH)2 is 1:1; adding SO2 and Ca(OH)2 to enable the mixed sugarcane juice which comes out of the ultrasonic reaction device to be subjected to the sulphitation and the neutralization, or adding part of the mixed sugarcane juice which is not carbonized by the CO2 to the mixed sugarcane juice which comes out of the ultrasonic reaction device to enable the same two to be subjected to the sulphitation and the neutralization, where the addition amount of the SO2 and the Ca(OH)2 is 55-59 percent of the addition amount ofthe SO2 and the Ca(OH)2 which are added to enable the mixed sugarcane juice to be subjected to the sulphitation and the neutralization; heating the mixed sugarcane juice; and precipitating the mixed sugarcane juice. The method for clarifying the ultrasonically-enhanced sugarcane juice can improve the neutralization speed and the neutralization degree of the sugarcane juice and reduce the content of the residual sulfur.

Description

【Technical field】 [0001] The invention relates to a sugar making process, in particular to an improved sugarcane juice clarification process. 【Background technique】 [0002] The color value and sulfur content of white granulated sugar are the most important and most technically difficult quality indicators of white granulated sugar. Decolorization in sugar mills is done through clarification. At present, the most commonly used clarification processes in sugar factories are mainly sulfurous acid method and carbonic acid method. In the sulfite clarification process, by adding SO 2 , milk of lime and phosphoric acid to form calcium sulfite precipitation and calcium phosphate precipitation to adsorb and remove the colloids and pigments in the sugar juice. The advantages of the sulfurous acid method are short process flow, simple equipment and less investment, but the clarification effect is not as good as that of the carbonic acid method. In the carbonation clarification pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C13B20/06C13B20/10
Inventor 黄永春李利军杨锋
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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