Method for improving sulfurous method production process in cane sugar factory

Abstract

The invention discloses a method for improving a sulfurous method production process in a cane sugar factory. Active carbon is taken as an auxiliary clarifying agent to perform physical impurity removal and decoloration on serum, filtered serum, crude syrup or triose remelt syrup led out from the sulfurous method sugar production flow, and the secondary sulfur smoke process is eliminated further, so the problem of secondary sulfur smoke troubling the sugar industry for a long term is solved, the quality of whiter granulated sugar is improved fundamentally, and the high-quality whiter granulated sugar with low sulfur dioxide and low color number is produced. The method comprises the following steps of: leading the serum, filtered serum, crude syrup or triose remelt syrup out of the conventional production flow into a reactor; adding the active carbon accounting for 0.5 to 3 mass percent of the syrup in the reactor, reacting at the temperature of between 60 and 90 DEG C for 15 to 30 minutes, and performing physical adsorption, impurity removal and decoloration; and discharging sugar liquor after the adsorption from the reactor, and making purified serum, filtered serum, crude syrup or triose remelt syrup subjected to secondary filtration and solid-liquid separation by using a plate-and-frame filter press and a precision filter enter the conventional production flow again.

Description

Technical field: [0001] The invention relates to the comprehensive utilization in the processing process of agricultural products, in particular to a method for improving the production process of the sulfite method in a cane sugar factory. technical background: [0002] At present, there are two domestic cane sugar production processes: sulfurous acid method and carbonic acid method. Due to poor product quality, these two processes have long been eliminated in developed countries. As far as our country is concerned, due to the serious pollution of the filter sludge produced by the carbonic acid sugar production process, and there is no good treatment method, most of the domestic sugar factories adopt the sulfurous acid sugar production process. There are the following deficiencies in the sulfite sugar production process: ①In order to reduce the color value in the production process, SO 2 bleached syrup, while SO 2 It has oxidation-reduction properties. After a period of t...

AI Technical Summary

Problems solved by technology

As far as our country is concerned, due to the serious pollution of the filter sludge produced by the carbonic acid sugar production process, and there is no good treatment method, most of the domestic sugar factories adopt the sulfurous acid sugar production process.

There are the following deficiencies in the sulfite sugar production process: ①In order to reduce the color value in the production process, SO 2 bleached syrup, while SO 2 It has oxidation-reduction properties. After a period of time, some colored substances are reduced again, and the white sugar will return to yellow; ②The production process uses a large amount of SO 2 , will convert sucrose and reduce the recovery rate; and will inevitably make the SO of white granulated sugar 2 ③The clarification efficiency of sugarcane juice is low, and some impurities are mainly colloidal substances trapped in the crystals when the sucrose is crystallized. After the sugar is dissolved, these substances are also dissolved in the solution, especially in the It is easy to form flocculent precipitates under acidic conditions; ④ The sulfurous acid method has poor clarification effect on cane juice, the product quality fluctuates greatly with the change of raw materials, and the sugar yield is low

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