Granule decoloration active carbon and preparation method thereof

An activated carbon and decolorization technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of incompatibility with high-tech products and modern enterprise management, no caramel decolorization performance, weak ability to remove organic macromolecular pigments, etc. Achieve excellent ability to remove macromolecular pigments, reduce decolorization carbon consumption and sewage discharge, and achieve excellent caramel decolorization performance.

Active Publication Date: 2007-10-17
CHAOYANG SHENYUAN ACTIVE CARBON
View PDF1 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Sugar charcoal produced by conventional physical methods, such as coal-based charcoal and fruit shell charcoal, has developed micropores, high iodine adsorption value and methylene blue adsorption rate, but has no caramel decolorization performance and the ability to remove organic macromolecular pigments Weak, can only be used for the removal of medium and small molecule pigments and refined decolorization of pharmaceutical, chemical, food and other products, and cannot meet the decolorization of many intermediates in the production process, such as glucose, citric acid, glutamic acid, amino acid pharmaceutical intermediates Technical requirements for decolorization in the production process
[0006] 2. Chemical powdered charcoal uses wood as raw material, and 10 cubic meters of wood per ton of sugar charcoal is used as raw material. China's annual production of sugar charcoal of various specifications is 30,000 tons (accounting for 1\6 of the total charcoal), and about 300,000 cubic meters of wood are needed , which will undoubtedly result in the deforestation of a large number of forests and seriously damage the ecology
[0007] 3. Problems in the application process: the decolorization tank is an intermittent operation, the production site is dusty, and it is not suitable for high-tech products and modern enterprise management
The applicant disclosed the "preparation method of granular activated carbon for sugar decolorization" in the patent application number 200610045781.1. Although the activated carbon has good particle strength, the caramel decolorization rate and adsorption performance are still not ideal.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Granule decoloration active carbon and preparation method thereof
  • Granule decoloration active carbon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: put 100kg of raw material apricot shells into a carbonization furnace and carbonize at 500±50°C for 3 hours. After cooling to room temperature, the carbonized material is put into an impregnation tank. The impregnation solution is 4kg85% phosphoric acid, 5kg sodium hydroxide, 2.5 kg of magnesium oxide, 4.5kg of zinc chloride and 100kg of water, prepared into an impregnating aqueous solution, impregnating the carbonized material (the liquid level standard of the impregnating solution is - subject to immersion in the carbonized layer), and soaking the impregnated carbonized material at room temperature for 6-8 Hours; then dry the impregnated carbonized material in a drying furnace at 400±50°C; the carbonized material carrying the impregnated material is activated at 800±50°C for 8-12 hours under the condition of passing through superheated steam, and then The activated material is pickled with 10% hydrochloric acid aqueous solution, and the pickled material i...

Embodiment 2

[0027] Example 2: Use wood tar as a binder and add coal powder to press it into a columnar shape. Take 100kg of pressed material and carbonize it in a carbonization furnace at 500±50°C for 3 hours. After cooling to room temperature, put the carbonized material into an impregnation tank and soak Use 4kg of 85% phosphoric acid, 4kg of sodium hydroxide, 3kg of magnesium oxide, 5kg of zinc chloride and 100kg of water to prepare an impregnating aqueous solution to impregnate the carbonized material (the liquid level standard of the impregnating solution is—the standard for immersing the charcoal layer) , soak at room temperature for 6-8 hours; then dry the impregnated carbonized material in a drying furnace at 400±50°C; ℃ activation treatment for 8-12 hours, then pickling with 10% hydrochloric acid aqueous solution, drying at 400±50 ℃ for 1-2 hours, and crushing to 20-60 mesh particles.

[0028]

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 present invention relates to special active carbon for caramel decolorization and the preparation method thereof. The solid nutshell or coal serves as raw material which is processed by a physical chemistry immersion activation method to create active carbon. The immersion liquid is a water solution mainly comprising phosphoric acid, sodium hydroxide, magnesia and zinc chloride, wherein the proportioning by weight of each component is phosphoric acid: sodium hydroxide: magnesia: zinc chloride = 1:0.8~2.0:0.5~1.0:1~1.5. The obtained active carbon has an iodine value of 800~1000 mg / g, a caramel decolorization ratio of 80~100%, and a mechanical strength of 95%. The material is subjected to carbonizing, immersing, drying and activating treatment to create the active carbon product. The active carbon of the present invention has excellent decolorization property for macromolecule pigment, higher mechanical strength as general physical carbon, and wide application range. The traditional powdery carbon is replaced by granular activated carbon, the decolorizing pot is replaced by decolorizing column, the active carbon is changed from the disposable usage to the repeated and regenerated usage, and the decolorizing system can be continuously operated for a long time.

Description

technical field [0001] The invention relates to a granular activated carbon used for decolorization and adsorption, in particular to a special activated carbon used for caramel decolorization and a preparation method of the activated carbon. Background technique [0002] Caramel decolorization activated carbon is mainly used to remove organic macromolecular pigments in the production process of chemical industry, food and medicine, and is an important carbon species of activated carbon. For a long time, the decolorization of caramel is produced by chemical method, and the activator is Zncl 2 or H 3 po 4 , and its production process is shown in Figure 1. [0003] The use of sawdust as a raw material in the chemical production process is because the zinc chloride solution can be immersed in the interior of the sawdust fiber and dehydrated at high temperature to produce qualified caramel decolorized charcoal. The process determines that caramel dec...

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 Applications(China)
IPC IPC(8): C01B31/12C01B31/08B01J20/30
Inventor 李国君古可隆
Owner CHAOYANG SHENYUAN ACTIVE CARBON
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap