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Method for preparing sugar alcohol and coproducing white carbon black

A technology of white carbon black and sugar alcohol, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problem that sugar alcohol products cannot be directly obtained, the purity of xylose cannot be guaranteed, and the specific surface area has not been found and other issues, to achieve huge economic and environmental benefits, novel preparation methods, and low cost of raw materials

Active Publication Date: 2018-05-25
广东金正大生态工程有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon is activated by chemical activation, and the activation temperature is low, which is conducive to the formation of smaller carbon crystallites, which can produce activated carbon with more developed pores and better adsorption performance; but this invention uses volatile alcohol reagents and high-temperature heating and roasting , high energy consumption, and does not take advantage of environmental protection. The most important thing is that the purity of xylose produced cannot be guaranteed, and xylose needs to be reduced to obtain sugar alcohol, and sugar alcohol products cannot be obtained directly
[0005] After searching, no relevant documents were found that can produce high-purity sugar alcohols and produce white carbon black with a large specific surface area

Method used

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  • Method for preparing sugar alcohol and coproducing white carbon black

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A method for preparing sugar alcohol co-production white carbon black, the steps are as follows:

[0055] (1) Add 400Kg potassium hydroxide and 1000Kg water into the reactor, stir at room temperature until there are no solid particles, and obtain solution A;

[0056] (2) Add 800Kg of glucose to the solution A prepared in step (1), and stir at room temperature until there are no solid particles to obtain solution B;

[0057] (3) 100Kg of silicon is added to the solution B prepared in step (2), then 8Kg of Raney nickel is added, then the reaction kettle is sealed, and nitrogen replacement is performed 3 times;

[0058] (4) Heat the reactor to 130°C, stir for 5 hours, cool down to room temperature, and then filter through a filter to obtain filtrate C and filter residue D, which is returned to the reactor in step (3) for recycling, and the filtrate C is Sugar Alcohol Silicon Solution.

[0059] (5) Add hydrochloric acid to the filtrate C, adjust the pH to 6-7, heat up to ...

Embodiment 2

[0063] A method for preparing sugar alcohol co-production white carbon black, the steps are as follows:

[0064] (1) Add 200Kg potassium hydroxide and 1000Kg water into the reactor, stir at room temperature until there are no solid particles, and obtain solution A;

[0065] (2) Add 300Kg of xylose to the solution A prepared in step (1), stir at room temperature until there are no solid particles, and obtain solution B;

[0066] (3) 50Kg of silicon is added in the solution B prepared in step (2), then 5Kg of palladium carbon is added, then the reaction kettle is sealed, and the nitrogen is replaced 4 times;

[0067] (4) Heat the reactor to 170°C, stir for 3 hours, cool down to room temperature, then filter through a filter to obtain filtrate C and filter residue D, and return the filter residue D to the reactor in step (3) for recycling, and the filtrate C is Sugar Alcohol Silicon Solution.

[0068] (5) Add hydrochloric acid to filtrate C, adjust the pH to 6-7, heat up to 70°...

Embodiment 3

[0072] A method for preparing sugar alcohol co-production white carbon black, the steps are as follows:

[0073] (1) Add 500Kg sodium hydroxide and 1000Kg water into the reaction kettle, stir at room temperature until there are no solid particles, and obtain solution A;

[0074] (2) Add 1000Kg glucose to the solution A prepared in step (1), stir at room temperature until there are no solid particles, and obtain solution B;

[0075] (3) 125Kg of silicon is added in the solution B prepared in step (2), then 5Kg of palladium carbon is added, then the reaction kettle is sealed, and nitrogen replacement is performed 3 times;

[0076] (4) Heat the reactor to 120°C, stir for 15 hours, cool down to room temperature, and then filter through a filter to obtain filtrate C and filter residue D, and return the filter residue D to the reactor in step (3) for recycling, and the filtrate C is Sugar Alcohol Silicon Solution.

[0077] (5) Add sulfuric acid to filtrate C, adjust the pH to 6-7,...

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Abstract

The invention relates to a method for preparing sugar alcohol and coproducing white carbon black. The method comprises the following steps: mixing raw sugar and a water-soluble strong alkali solution;adding silicon and a catalyst; removing oxygen and stirring and reacting at 100 to 200 DEG C under a sealed state; filtering to obtain filtrate C and filtering residue D; adding acid into the filtrate C and regulating the pH (Potential of Hydrogen); stirring and reacting, and filtering to obtain filtrate E and a solid F; drying the solid F to obtain the white carbon black; carrying out electrodialysis desalination on the filtrate E to obtain a sugar alcohol solution G; concentrating, spraying and drying the sugar alcohol solution G to obtain the sugar alcohol. According to the method providedby the invention, hydrogen gas generated through reaction of silicon and strong alkali is used as a reducing agent, and hydrogen gas does not need to be additionally introduced or other reducing agents do not need to be additionally added; unreacted substances and products can be repeatedly utilized and pollution caused by three wastes is not caused; the purity of the prepared sugar alcohol can reach 90 percent or more and the white carbon black can reach HG / T 3061-2009 A type standards.

Description

technical field [0001] The invention relates to a method for preparing sugar alcohol co-production white carbon black, belonging to the technical field of sugar alcohol and white carbon black preparation. Background technique [0002] Sugar alcohols are sugars that are reduced to corresponding polyols by catalytic hydrogenation. Although sugar alcohols are not sugar, they have many similarities with sugar in terms of appearance and performance. Sugar alcohols are less sweet than sucrose and mostly lower in calories than sucrose, so they are used as bulking agents for low-sweetness, low-calorie sweeteners or high-intensity sweeteners. At the same time, they are generally not restricted by insulin and will not cause an increase in blood sugar levels, so they are often used as sweeteners for patients with diabetes and obesity. In the oral cavity, this type of sweetener is not affected by microorganisms and does not produce acid, so it has no caries. Sugar alcohols can be use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/141C07C31/26C07C31/18C01B33/18
CPCC01B33/18C01P2006/12C07C29/141C07C31/26C07C31/18
Inventor 尤龙高建仁
Owner 广东金正大生态工程有限公司
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