A kind of method that granular activated carbon is used for decolorization and impurity removal

A granular activated carbon, decolorization and impurity removal technology, applied in separation methods, chemical instruments and methods, climate sustainability, etc., can solve the problems of poor operating environment, high cost, environmental pollution, etc., and achieve long service life, easy operation, The effect of reducing production costs

Active Publication Date: 2018-08-17
HUBEI GRAND LIFE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for decolorizing and impurity removal of granular activated carbon, which has the advantages of less consumption of activated carbon, environmental protection, energy saving, low production cost, good operating environment, simple operation, high degree of automation, and is particularly easy to industrialize. , to solve the problems of serious environmental pollution, high cost and poor operating environment in the existing powdery carbon decolorization and impurity removal process

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  • A kind of method that granular activated carbon is used for decolorization and impurity removal
  • A kind of method that granular activated carbon is used for decolorization and impurity removal

Examples

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Embodiment 1

[0029] A kind of granular active carbon is used for the method for decolouring and impurity removal, and described method is applied to the decolorization and impurity removal process of taurine, comprises the following steps:

[0030] 1) coarse filtration pretreatment: dissolving the crude taurine in hot water, performing coarse filtration, filtering out the filter residue to obtain a hot solution of the crude taurine;

[0031] 2) Decolorization by granular activated carbon: pump the hot solution of crude taurine into a carbon tower filled with granular activated carbon, and decolorize and remove impurities in the process of flowing from top to bottom in the carbon tower.

[0032] The dissolving temperature of the crude taurine in the step 1) is 70-95°C.

[0033] The step 1) coarse filtration adopts sand filtration.

[0034] The step 2) granular activated carbon is produced from fruit shells or coconut shells, with a particle size of 15-80 mesh.

[0035] The light transmitt...

Embodiment 2

[0042] A kind of granular active carbon is used for the method for decolouring and impurity removal, and described method is applied to the decolorization and impurity removal process of taurine, comprises the following steps:

[0043] 1) coarse filtration pretreatment: dissolving the crude taurine in hot water, performing coarse filtration, filtering out the filter residue to obtain a hot solution of the crude taurine;

[0044] 2) Decolorization by granular activated carbon: pump the hot solution of crude taurine into a carbon tower filled with granular activated carbon, and decolorize and remove impurities in the process of flowing from top to bottom in the carbon tower.

[0045] The dissolution temperature of the step 1) crude taurine is 85°C.

[0046] The step 1) coarse filtration adopts titanium rod filtration.

[0047] The step 2) granular activated carbon is produced from fruit shells or coconut shells, with a particle size of 70 mesh.

[0048] The light transmittance o...

Embodiment 3

[0055] A kind of granular active carbon is used for the method for decolouring and impurity removal, and described method is applied to the decolorization and impurity removal process of taurine, comprises the following steps:

[0056] 1. Decolorization and impurity removal

[0057] Dissolve the crude taurine produced in the workshop in deionized water to make a solution with a concentration of 33-38g / 100mL, first use a polyester sponge for coarse filtration, remove flocs and a small amount of water-insoluble impurities, and then enter the transfer Then pump it into the carbon tower filled with granular activated carbon, and decolorize and remove impurities during the process of flowing from top to bottom in the carbon tower. When the light transmittance of the effluent liquid is less than 95%, the adsorption is close to saturation. Stop feeding and switch to the standby carbon tower for decolorization and impurity removal. (The temperature of dissolution, filtration and deco...

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Abstract

The invention relates to the fields of energy saving and environmental protection, and in particular, relates to a method using granular activated carbon for decoloration and impurity removal. The method comprises the steps: dissolving a taurine crude product in hot water, carrying out coarse filtration, filtering out floccule and other suspended solids, then pumping into carbon towers filled with granular activated carbon by pumps, carrying out alternative decoloration and impurity removal with the two granular activated carbon towers, after adsorption is close to saturation, carrying out in-situ regeneration by alternatively using steam condensed hot water, and continuously producing. The activated carbon towers work for 9-15 months, and then the granular activated carbon is subjected to ultrasonic and microwave collaborative regeneration for reuse. The granular activated carbon is regenerated and reused, the use amount of the activated carbon is reduced, the method is green and environmentally friendly and saves energy, the production cost is reduced, the operating environment is improved, the continuty of decoloration and impurity removal of taurine is realized, the production process and technology are simplified, and the method is simple and convenient to operate, high in degree of automation and especially prone to realization of industrialization.

Description

technical field [0001] The invention relates to the field of energy saving and environmental protection, in particular to a method for decolorizing and removing impurities by granular activated carbon. Background technique [0002] Activated carbon is a carbonaceous adsorption material with rich pore structure and huge specific surface area. According to the appearance shape, it can be divided into two types: powder and granule. Generally, more than 90% of the activated carbon that passes through the 80-mesh standard sieve or the particle size is less than 0.175mm is called powder. Activated carbon, activated carbon with a particle size greater than 0.175mm is called granular activated carbon. In the field of pharmaceutical and food industries, activated carbon is also widely used. Generally, it must be decolorized and purified by activated carbon to remove pigments and impurities. [0003] Ultrasonic wave refers to the elastic wave produced by an object with a high vibrati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/44C07C309/14B01J20/20B01J20/34
CPCB01J20/20B01J20/3441C07C303/44C07C309/14Y02P20/10
Inventor 杨长云孙华君张邦国刘年金张军桥金军民
Owner HUBEI GRAND LIFE SCI & TECH CO LTD
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