Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing sulfur-free white sugar by carbon method with resource recycling

A carbon method and resource technology, applied in the field of sugar production, can solve the problems of increasing impurities and Maillard pigment, unfavorable cleaning of sugar juice, etc., and achieve the effects of reducing pollution and impact, convenient management, and reducing emissions

Inactive Publication Date: 2013-10-16
GUANGXI UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The currently used filling technology is also limited by the backwardness of the equipment. The filling process lasts for more than 20 minutes. Under the condition of alkaline and high temperature, the impurities and Maillard pigments generated in the sugar juice will increase, which is not conducive to the cleaning of the sugar juice.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Heat two cups of 100ml mixed juice at 35°C, add 200ppm phosphoric acid and 0.1% polyacrylamide 1%, and add lime milk to one cup to adjust the pH value to 7.2. After stirring, the floating speed of the flocs in the mixed juice is not slow Lime milk is significantly larger than lime milk.

Embodiment 2

[0040] Of the two cups of mixed juice that were sampled at the same time, one cup was kept refrigerated, and the color value was low; the other cup was not refrigerated, and the color value increased. Two cups of juice were heated to 45°C, added phosphoric acid 300ppm, lime milk to adjust the pH to 10.5-11.0, and then added 0.1% polyacrylamide 1% to obtain filtered juice. The filtered juice with high primary color value still had high color value. It shows that the ability of low-temperature phosphoric acid treatment to remove soluble pigments is not high, and it is only suitable for removing insoluble impurities. It is suitable for quickly floating the sugar juice at low temperature before the color value of the sugar juice increases.

Embodiment 3

[0042] In a bioengineering 300t / d fermentation waste liquid treatment, the solid matter particle size is 8-12μ, the protein content is more than 64%, and the weight is up to 3%. The high-speed air flotation device developed by the inventor is used in conjunction with the diffusion pipeline mixer to separate flocs under the condition of pH 4.4-4.6, and the removal rate of protein reaches 98%, but the removal rate of ammonia nitrogen is not more than 10%. The air flotation device works continuously 24 hours a day, 330 days a year, and has no clogging accidents, and works well.

[0043] This example shows that when the protein is close to the isoelectric point of protein coagulation, the removal effect of flocculation and air flotation is good. If it is used in the treatment of sugar juice, the protein content in the filter mud can be greatly reduced.

[0044] Low-temperature phosphorus floatation removes protein, and can also reduce the degradation of some protein into amino aci...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing sulfur-free white sugar by a carbon method with resource recycling. The method provided by the invention comprises the following steps of: clarifying rapidly at low temperature; carrying out acidity low-temperature rapid phosphorus floatation; and carrying out high-temperature alkaline efficient full charge so as to obtain sulfur-free clean serum; then conveying to the following working procedure, cooking sugar and crystallizing so as to obtain sulfur-free white sugar. During the sugar liquid rapid purifying process by the method, each additive agent is added by adopting a pipeline-type rapid mixer; fully charged filter residue acts as a raw material for producing lime powder; the lime powder produced by a lime powder production device for combusting cane trash is recycled for mixing the alkalinity of sugar juice; and a kiln gas for producing the lime powder is recycled for full charge. The technology can be used for producing the sulfur-free white sugar, has no waste residue to pollute the environment, and implements resource recycling clean production.

Description

field of invention [0001] The invention relates to a method for producing sugar, in particular to a method for producing sulfur-free white sugar by carbon-based recycling of resources. Background technique [0002] With the improvement of living standards, low-sulfur and sulfur-free white sugar is becoming more and more popular. As a result, carbon dioxide and calcium oxide in sugar juice are used to generate calcium carbonate by filling, and the carbonation method of using calcium carbonate to absorb colloids and pigments to clean sugar juice is becoming more and more popular. [0003] However, the carbonic acid method needs to use lime and carbon dioxide, and the calcium carbonate generated in the production absorbs organic matter and discharges filter mud, which accounts for about 10% of the total sugarcane. The filter mud generally contains about 38% to 42% water, and the dry filter mud contains CaCO 3 73.4%, MgO 0.7%, SiO 2 8.4%, the total of the three is about 82.5...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C13B20/00C13B20/16C13B20/06C13B30/00C05F5/00
CPCY02A40/20Y02P40/40
Inventor 李坚斌扈胜禄
Owner GUANGXI UNIV