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Carbon-sulfur combining sugar juice carbonation and clarifying method through CO2 generated from alcohol in production of sugar from sugarcane

A technology combining sugar and filling, applied in the production of sucrose, purification of sugar juice, purification by physical methods, etc., can solve problems such as air pollution, achieve strong adsorption capacity, eliminate energy waste and environmental pollution, and improve product quality. Effect

Inactive Publication Date: 2015-02-18
LINCANG NANHUA SUGAR IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the current alcohol production process, a large amount of high-purity and high-concentration (95-99%) CO is produced during the alcoholic fermentation of molasses 2 , if it is directly emptied, it will cause air pollution

Method used

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  • Carbon-sulfur combining sugar juice carbonation and clarifying method through CO2 generated from alcohol in production of sugar from sugarcane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 Shown, a kind of carbon-sulfur combined sugar juice is full and cleansing method, comprises the following steps:

[0039] Step (1), preash the sugar juice to pH 7.6, add phosphoric acid with a mass concentration of 30% to it, the amount of phosphoric acid added is 300ppm, and then heat to 65°C;

[0040] Step (2), add ash to the sugar juice heated in step (1) to a pH of 8.0, and then pass CO 2 Gas, for rapid filling, and the pH of the filling juice is controlled at 9.0; the CO 2 The gas is CO produced during alcohol production in sugar factories 2 Gas, the purity is above 99%;

[0041] Step (3), add flocculant to the sugar juice that has been rapidly filled in step (2), the amount of flocculant added is 3ppm, stir until the mixture is uniform, and then separate through the high-efficiency multi-stage separation sugar juice settler, separate Get scum and mud and clear juice;

[0042] In step (4), the scum and mud juice separated in step (3) are mixe...

Embodiment 2

[0045] Such as figure 1 Shown, a kind of carbon-sulfur combined sugar juice is full and cleansing method, comprises the following steps:

[0046]Step (1), preash the sugar juice to pH 7.6, add phosphoric acid with a mass concentration of 35% to it, the amount of phosphoric acid added is 280ppm, and then heat to 60°C;

[0047] Step (2), add ash to the sugar juice heated in step (1) to a pH of 8.3, and then pass CO 2 Gas, for fast filling, and the pH of the filling juice is controlled at 8.5; the CO 2 The gas is CO produced during alcohol production in sugar factories 2 Gas, the purity is above 99%;

[0048] Step (3), add polyacrylamide to the juice that has been quickly filled in step (2), the amount of polyacrylamide added is 5ppm, stir until the mixture is uniform, and then separate through the high-efficiency multi-stage separation sugar juice settler , separated to obtain scum and mud juice and full clear juice;

[0049] In step (4), mix the scum and mud juice separat...

Embodiment 3

[0052] Such as figure 1 Shown, a kind of carbon-sulfur combined sugar juice is full and cleansing method, comprises the following steps:

[0053] Step (1), preash the sugar juice to pH 7.6, add phosphoric acid with a mass concentration of 27% to it, the amount of phosphoric acid added is 270PPm, and then heat to 63°C;

[0054] Step (2), add ash to the sugar juice heated in step (1) to a pH of 8.5, and then pass CO 2 Gas, for rapid filling, and the pH of the filling juice is controlled at 9.6; the CO 2 The gas is CO produced during alcohol production in sugar factories 2 Gas, the purity is above 99%;

[0055] Step (3), add polyacrylamide to the juice that has been quickly filled in step (2), the amount of polyacrylamide added is 4ppm, stir until the mixture is uniform, and then separate through the high-efficiency multi-stage separation sugar juice settler , separated to obtain scum and mud juice and full clear juice;

[0056] In step (4), the scum and mud juice separated...

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Abstract

The invention relates to a carbon-sulfur combining sugar juice carbonation and clarifying method, and belongs to the technical field of a sugar producing process. The method, on the basis of a sulfurous method, makes use of di-carbonation process control point of a carbonic acid method process and takes CO2 generated from molasses alcohol production as a sugar juice clarifying agent to replace SO2 of the sulfurous method, so as to reduce SO2 consumption of the sulfurous method. The method disclosed by the invention, by taking the CO2 generated from molasses alcohol production as a bubble producing air source and in combination of the sulfurous method, the carbonic acid method and an air floatation clarifying technology, can significantly improve clarifying efficiency and effect and reduce consumption of sulfur; and meanwhile, quality of white sugar is improved and pollution of CO2 emission on air is relieved.

Description

Technical field [0001] The present invention is a sugar -making process technology, involving a sugar -making process, which involves a method of purity of sugar juice. Background technique [0002] The clarification of sugarcanose juice is an important process for sugar cane sucrose, mainly with sulfuric acid and carbonate.In the past ten years, on the basis of the sulfuric acid method process, the sugar factory uses flocculant, and uses cane juice to make a large number of colloidal, pigments, and some inorganic salts under alkaline conditions.Except for most non -sugar, then its alkaline clearing juice is neutralized with a new processes of phosphate.The color value of the pure juice is reduced compared to the original sulfuric acid method, thereby improving the quality of white sugar.However, the stability is not good and the obvious effect of improving the reduction of sulfuric acid. The time of leukin made from sulfuric acid method will turn yellow for a long time. [0003]...

Claims

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Application Information

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IPC IPC(8): C13B20/00C13B20/06
CPCC13B20/005C13B20/007C13B20/06C13B20/16
Inventor 陈子华高正卿李杨发陈勇李如仙李荣奎陈国伟徐东声邓涛
Owner LINCANG NANHUA SUGAR IND
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