Intensified cane juice clarification method

A technology for cane juice and mixed juice, which is applied in the directions of using oxidation/reduction purification and alkaline earth compound purification, etc., can solve the problems of large equipment, low investment, large consumption, etc., so as to reduce heat transfer efficiency, increase energy consumption, and reduce production. The effect of efficiency

Inactive Publication Date: 2012-11-14
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • 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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  • Intensified cane juice clarification method
  • Intensified cane juice clarification method
  • Intensified cane juice clarification method

Examples

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Embodiment 1

[0021] An enhanced sugarcane juice clarification method, based on the sulfitic and carbonic 2 and Ca(OH) 2 Added to sugarcane juice and reacted in a vortex reaction device to produce nano-scale ultrafine calcium carbonate particles, these ultrafine calcium carbonate particles were 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] The specific process includes: pre-ash, primary heating, CO 2 Filling, sulfur fuming neutralization, secondary heating and settling processes (see figure 1 ), the CO 2 The filling process is to inject CO into the whole mixed juice after pre-ashing and heating once. 2 with Ca(OH) 2 , and pass the mixed juice to the vortex reaction device for CO 2 Saturation reaction, then carry out sulfur fumigation neutralization reaction with the sugarcane j...

Embodiment 2

[0024] A kind of strengthened cane juice clarification method, its basic principle is the same as embodiment 1, the difference is: it is only part of the mixed cane juice after pre-ashing and heating 2 Filling process treatment, namely: CO 2 The filling 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 vortex reaction device for CO 2 The reaction was saturated, and then the part was subjected to CO in a vortex reaction apparatus. 2 The sugarcane juice processed by the filling process and the other part are only pre-ashed, heated once without CO 2 The mixed juice processed in the filling process is mixed together for sulfur fumigation and neutralization reaction; for the specific process, see figure 2 ; In the sulfur fumigation neutralization process, after CO 2 The amount of the treated part in the full process and the amount without CO 2 The ratio of the amount of the treatment...

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Abstract

The invention relates to an intensified cane juice clarification method which comprises pre-liming, primary heating, CO2 full filling, sulphitation and neutralization, secondary heating and settlement; the CO2 full filling procedure is as follows: pre-limed and primarily heated mixed juice is fed with CO2 and Ca(OH)2, the mixed juice is fed into an eddy reactor to have CO2 full filling reaction, and then the cane juice from the eddy reactor has sulphitation and neutralization reactions or is added with some the mixed juice which does not have CO2 full filling reaction to carry out the sulphitation and neutralization reactions; the amount of the Ca(OH2) which is fed into the mixed juice in the CO2 full filling procedure is about 0.05 percent of the weight of the cane juice, and the molar ratio of the amount of CO2 to the amount of Ca(OH)2 is 1:1, and the amount of SO2 and the Ca(OH)2 added in the sulphitation and neutralization reactions is 55 to 95 percent of the amount required in the traditional sulphitation and neutralization reactions. The method can improve the cane juice neutralization reaction speed and the reaction degree as well as the decolorization effect, and reduce 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): C13D3/10C13D3/06C13B20/10C13B20/06
Inventor 黄永春李利军杨锋
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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