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Clarification method of flue gas saturated with mixed liquid

A technology for mixing juice and flue gas, applied in the direction of using oxidation/reduction purification, etc., can solve the problems of high sulfur content in white sugar, insufficient product quality, stable carbonation method, etc., to reduce the conversion of sucrose, improve the purity, and improve the product quality effect

Active Publication Date: 2009-02-04
GUANGXI LAIBIN YONGXIN XIAOPINGYANG SUGAR IND CO LTD
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Problems solved by technology

The product quality of the carbonation method is good, but the filter mud produced is alkaline, and it is a big problem to deal with it at present; the filter mud of the phosphosulfite method can be used as fertilizer for crops, but the product quality is not stable enough for the carbonation method, and the product High sulfur content in white granulated sugar is also a common problem in sugar factories

Method used

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  • Clarification method of flue gas saturated with mixed liquid

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Embodiment Construction

[0012] Describe in detail below in conjunction with embodiment.

[0013] The flue gas at the outlet of the boiler is extracted by a high-power fan or a vacuum pump, and most of the soot and impurities are removed through the treatment of the water film dust collector 1, and then enters the gas storage tank 2, and then is sent to the filling tank 3; the squeezed mixed juice is passed through After adding phosphoric acid and pre-ashing to PH 7.5-8.0 (the effective phosphoric acid value can be reduced from 400-450ppm without flue gas filling to 300-350ppm), heat to 65-70°C once, pump until the tank is full, and mix the juice The flue gas flows from the top down, and the flue gas goes from the bottom to the top. After the two are fully contacted and reacted, the mixed juice enters a stirring tank 4, is fully stirred, and then enters the floater 5 from the stirring tank. Before entering, add 2-3ppm flocculant, The mixed juice after flotation is then pumped for sulfur fumigation and...

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Abstract

The invention discloses a flue gas saturation mixed juice settling method, which is that flue gas is adopted to carry out the saturation pretreatment of mixed juice on the basis of the phosphate sulfite method before the sulfur fumigation of the mixed juice is carried out; then the mixed juice is treated by the floating treatment to remove part of impurities and reducing sugar to enable the mixed juice to reach an ideal effect, at the same time, the utilization of the flue gas can reduce the using amount of phosphate and sulfur and the production amount of filter mud is reduced to achieve the purposes of improving the sugar boiling recovery, lowering the intensity of sulfitation and the using amount of the phosphate and improving the product quality.

Description

technical field [0001] The invention relates to a process for cleaning cane juice from sugar cane, in particular to a method for clarifying mixed juice filled with flue gas. Background technique [0002] The impact of the clarification process on the product quality and sugar recovery rate of the sugar factory is a very important link. At present, there are various clarification methods, and the clarification processes of carbonic acid and phosphosulfurous acid are commonly used. The product quality of the carbonation method is good, but the filter mud produced is alkaline, and it is a big problem to deal with it at present; the filter mud of the phosphosulfite method can be used as fertilizer for crops, but the product quality is not stable enough for the carbonation method, and the product The high sulfur content of white sugar is also a common problem in sugar factories. Contents of the invention [0003] In the present invention, on the basis of the phosphosulfurous a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13D3/10C13B20/10
Inventor 何华柱赵强周锡文黄悦刚韦武林韦锦然钟国洪黄福黄忠志谭家杰周洪祥
Owner GUANGXI LAIBIN YONGXIN XIAOPINGYANG SUGAR IND CO LTD
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