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A process, sugarcane juice technology, applied in the field of sugar clarification process, can solve the problems of high sulfur content in finished sugar, high color value of finished sugar, poor clarification effect, etc., and achieve high production capacity, high separation efficiency and less auxiliary equipment Effect
Active Publication Date: 2015-07-29
GUANGXI UNIV
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[0007] The purpose of the present invention is to provide a sugar clarification process, which solves the problem of poor clarification effect of the traditional sulfurous acid sugar clarification process, high sulfur content and low quality of the finished sugar, and the color of the finished sugar obtained by processing sugarcane juice with traditional membrane separation technology. high value technical issues
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Embodiment 1
[0033] A sugar clarification process, comprising the steps of:
[0034] (1) Liming: adding milk of lime with a concentration of 8.0 ° Be to the mixed juice of the sugarcane sugar factory, adjusting the pH value of the sugarcane juice to 7.6, preventing the sucrose in the sugarcane juice from converting under acidic conditions, resulting in the loss of sucrose, and obtaining limed cane juice;
[0035] (2) Coarse filtration: Utilize a decanter centrifuge with an aperture of 50.0 μm to filter the ash-added sugarcane juice to obtain the coarsely filtered sugarcane juice;
[0036] (3) The first heating: heat the coarsely filtered sugarcane juice to 55°C with a tube-and-tube heat exchanger, which is beneficial to the sulfur fumigation process of the next step on the SO 2 The absorption of sugarcane juice is obtained by heating for the first time;
[0037] (4) Sulfur fumigation: Utilize the sulfur fumigation device to carry out sulfur fumigation to the sugarcane juice heated for th...
Embodiment 2
[0050] A sugar clarification process, comprising the steps of:
[0051] (1) Liming: adding milk of lime with a concentration of 8.5 ° Be to the mixed juice of the sugarcane sugar factory, adjusting the pH value of the sugarcane juice to 7.5, preventing the sucrose in the sugarcane juice from converting under acidic conditions, resulting in the loss of sucrose, and obtaining limed cane juice;
[0052] (2) Coarse filtration: Utilize a decanter centrifuge with an aperture of 150.0 μm to filter the ash-added sugarcane juice to obtain the coarsely filtered sugarcane juice;
[0053] (3) The first heating: heat the coarsely filtered sugarcane juice to 65°C with a tube-and-tube heat exchanger, which is beneficial to the sulfur fumigation process of the next step on the SO 2 The absorption of sugarcane juice obtained by heating for the first time;
[0054] (4) Sulfur fumigation: Utilize the sulfur fumigation device to carry out sulfur fumigation to the sugarcane juice heated for the ...
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Abstract
The invention discloses a sugar manufacture clarification process which comprises the following steps: adding lime milk into mixed cane juice to adjust the pH value to be 7.5-7.8, thereby obtaining lime-milk-added cane juice; filtering the lime-milk-added cane juice by using a horizontal screw centrifuge, thereby obtaining roughly filtered cane juice; heating the roughly filtered cane juice to be 55-65 DEG C, thereby obtaining cane juice which is heated for the first time; stoving the cane juice which is heated for the first time with SO2 until the intensity of sulfitation is 4-6 mL, thereby obtaining stoved cane juice; heating the stoved cane juice to be 80-90 DEG C, thereby obtaining cane juice which is heated for the second time; performing ultrafiltration clarification on the cane juice which is heated for the second time by using a ceramic membrane, thereby obtaining clear cane juice and membrane concentrated liquid; filtering the membrane concentrated liquid by using a plate-and-frame filter press, and returning the filtered membrane concentrated liquid to a roughly filtered cane juice storage tank. As a conventional sugar manufacture clarification process through a sulfurous acid method is combined with a membrane separation technique, a novel sugar manufacture clarification process is developed, the clarified cane juice prepared by using the process is low in color value, high in purity and low in turbidity, and the white sugar prepared from the cane juice is good in quality.
Description
technical field [0001] The invention relates to a sugar clarification process, which belongs to the technical field of sugar production engineering. technical background [0002] my country is the third largest sugar producing country in the world, with an annual output of more than 10 million tons of white granulated sugar. At present, according to different sugar clarification processes, there are mainly two methods for producing farmland white granulated sugar: the first is the sulfurous acid method, and the second is the carbonic acid method. Although these two methods can produce white granulated sugar meeting national quality standards, there are more or less deficiencies in both the sulfurous acid method and the carbonic acid method. Sulfurous acid method adds more SO in the clarification process 2 As a clarifying agent, there will be more sulfur residues in the finished sugar, which has certain limitations for high-end customers; while the carbonic acid method requ...
Claims
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