Method for cleaning refractory cane juice for sugar factories by using sulfurous method

A sulphite sugar factory and cane juice technology, which is applied in the purification of sugar juice, sugar production, sucrose production, etc., can solve the problems of unsatisfactory product quality, achieve low cost, improve cleaning effect, and reduce content.

Inactive Publication Date: 2013-03-20
GUANGXI CHONGZUO XIANGGUI SUGAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of unsatisfactory product quality caused by the existing process of recalcitrant cane juice, reduce the water-i...

Method used

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  • Method for cleaning refractory cane juice for sugar factories by using sulfurous method
  • Method for cleaning refractory cane juice for sugar factories by using sulfurous method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 15% sodium carbonate aqueous solution by weight to 1000kg of squeezed mixed juice, adjust the pH of the mixed juice to 6.5, and then process the obtained solution according to the original sulfurous acid process until 300kg of crude syrup obtained by evaporation and concentration, and then add Food additive phosphoric acid to adjust the pH to 6.3, heat to 85°C, add 5ppm polyacrylamide and 0.3Kg sodium stearate and mix evenly, then fill in an appropriate amount of fine air bubbles from the bottom of the coarse syrup tank to allow non-sugar impurities such as colloids and pigments to enter The floater is separated from the syrup, and the quality of the clear syrup obtained is significantly improved. Afterwards, the original process is used to produce qualified white sugar. The test data of finished white sugar are shown in Table 1.

Embodiment 2

[0026] Add 15% sodium carbonate aqueous solution by weight to 1000kg of squeezed mixed juice, adjust the pH of the mixed juice to 6.7, and then process the obtained solution according to the original sulfurous acid process until 275kg of crude syrup obtained by evaporation and concentration, and then add Food additive phosphoric acid to adjust the pH to 6.4, heat to 80°C, add 5ppm polyacrylamide, 45ppm polyaluminum chloride, 0.2Kg sodium stearate and 0.1kg sodium laurate and mix well, then fill an appropriate amount from the bottom of the coarse syrup tank Fine air bubbles allow non-sugar impurities such as colloids and pigments to enter the floater to be separated from the syrup, and the quality of the obtained clear syrup is significantly improved. After that, the original process is used to produce qualified white sugar. The test data of finished white sugar are shown in Table 1.

Embodiment 3

[0028] Add 15% sodium carbonate solution to 1000kg of squeezed mixed juice, adjust the pH of the mixed juice to 6.6, and then process the obtained solution according to the original sulfite process until 260kg of crude syrup obtained by evaporation and concentration, and then add food additives to the crude syrup Adjust the pH to 6.5 with phosphoric acid, heat to 82°C, add 5ppm polyferric sulfate, 0.3Kg sodium stearate and 0.3kg sodium dodecylsulfonate and mix evenly, then fill in an appropriate amount of fine air bubbles from the bottom of the coarse syrup tank to make Non-sugar impurities such as colloids and pigments enter the floater to be separated from the syrup, and the quality of the obtained clear syrup is significantly improved. After that, the original process is used to produce qualified white sugar.

[0029] The test data of finished white sugar are shown in Table 1.

[0030] Following table 1 is the production and use effect detection data of the present inventio...

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PUM

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Abstract

The invention discloses a novel method for cleaning refractory cane juice for sugar factories by using a sulfurous method, belonging to the field of cane juice cleaning. The method is characterized by comprising the steps of: before preliming mixed juice, adding sodium carbonate aqueous solution with the weight content of 5-30%, regulating the pH of the solution to 6.5-6.7, producing to obtain crude syrup through a conventional processes, regulating the pH to 6.3-6.5 by using phosphoric acid, adding micro bubbles after heating, adding 2-5PPM flocculant and mixing with a foaming agent, entering to a floating device, condensing non-sugar impurities such as colloid and pigment in the sugar juice together, lifting by utilizing the bubbles, forming scum and removing. According to the invention, only a sodium carbonate dissolving bucket and a syrup floating system are needed to be added on the basis of the conventional equipment; lime and saccharifying calcium are not needed to be added and serve as auxiliaries during the floating treatment; therefore, the method has the advantages that the operation is simple, the investment cost is low, the cleaning effect is remarkably increased and the colloid, residual sulfur dioxide and water insoluble matters are obviously removed; and the method is suitable for producing qualified white granulated sugar by using poor-quality refractory cane juice.

Description

technical field [0001] The invention relates to a new method for cleaning recalcitrant cane juice in a sulfite-processed sugar factory, belonging to the field of sugar industry. Background technique [0002] Due to natural disasters such as pests, typhoons, frosts, floods, etc., as well as untimely harvesting and transportation, sugarcane juice has high organic acids, colloids, pigments, and other non-sugar content, resulting in easy conversion of sucrose during the cleaning process, slow sedimentation, clear juice turbidity, and low calcium content. and color value increase. It is difficult to deal with conventional cleaning methods, and it is called stubborn cane juice. The usual measures taken to deal with this type of cane juice are: [0003] ① Process this batch of sugarcane as soon as possible, increase the daily crushing capacity, appropriately reduce the permeating water and oil pressure of the crushing, so as to reduce the extraction of non-sugar. [0004] ②Stren...

Claims

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Application Information

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IPC IPC(8): C13B20/00C13B20/10
Inventor 刁晓韦洁云蓝恒星吴恒峰周镇锋陈书勤廖福真
Owner GUANGXI CHONGZUO XIANGGUI SUGAR
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