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Method for producing sugar charcoal particle sugar charcoal by physical method

A production method and technology of physical method, applied in the production field of physical method granular sugar charcoal, can solve the problems of short operation period, frequent regeneration, poor use effect, etc., and achieve high wear resistance and good caramel decolorization effect

Inactive Publication Date: 2009-08-12
HUAIBEI DAHUA ACTIVE CARBON +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The charcoal currently used has no caramel decolorization power, so the use effect is not good, the operation cycle is short, and the regeneration is frequent, resulting in high cost of decolorization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 Production of Granular Sugar Charcoal Using Anthracite Coal

[0025] 1. Add 120g of ammonium polyphosphate and 300g of petroleum hard asphalt to 2000g of anthracite, crush them together to 200 mesh, then add 500g of coal tar, and then add 200ml of sodium hydroxide and sodium phosphate aqueous solution with a concentration of 15% after kneading to form a certain Blend of softness.

[0026] 2. Put the above mixture at 200kg / cm 2 Under pressure, it is extruded into a columnar strip through a metal mold with a hole diameter of φ2mm~φ4mm.

[0027] 3. After drying the columnar strips, put them into the carbonization furnace. The carbonization furnace uses electric heating wire to heat slowly under the condition of isolating the air. The heating rate is maintained at 5°C to 10°C / min. When the temperature rises to 500°C to 550°C, keep it at a constant temperature for half an hour for carbonization, so that the strips out of the furnace become carbonized materials....

Embodiment 2

[0033] Embodiment 2 Utilizes anthracite to produce granular sugar charcoal (without using ammonium polyphosphate)

[0034] Add 300g of petroleum hard asphalt to 2000g of anthracite, pulverize together to 200 mesh, then add 500g of coal tar, knead and then add 200ml of sodium hydroxide and sodium phosphate aqueous solution with a concentration of 15% and knead at 200kg / cm 2 Extrude into columnar strips under pressure, carbonize at 500°C-550°C for half an hour, extrude into columnar strips, activate the carbonized material in the activation furnace after drying, and pass in superheated water at 450°C when the temperature rises to 750°C Steam, the activation temperature is controlled between 920°C and 950°C, and the activation time is 5.5 hours. 740 g of granular sugar charcoal was obtained.

[0035] The technical indicators of the assay are:

[0036] Iodine adsorption value methylene blue Caramel Decolorization Abrasion Strength 1020mg / g 205mg / 0.1g 55％ ...

Embodiment 3

[0038] Example 3 Production of Granular Sugar Charcoal Using Non-caking Bituminous Coal

[0039] Add 160g of ammonium polyphosphate and 280g of petroleum hard asphalt to 2000g of non-caking bituminous coal, grind them together to 250 mesh, then add 400g of coal tar, knead, and then add 20% sodium hydroxide and 200ml of sodium dihydrogen phosphate aqueous solution to knead , at 180kg / cm 2 Extrude into columnar strips under pressure, and carbonize at 500°C to 550°C. After drying, the carbonized material is activated in the activation furnace. When the temperature rises to 750°C, superheated steam at 450°C is introduced. 920°C, activation time 4.5 hours. 685 g of granular sugar charcoal was obtained.

[0040] The technical indicators of the assay are:

[0041] Iodine adsorption value methylene blue Caramel Decolorization Abrasion Strength 965mg / g 205mg / 0.1g 93％ 90％

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PUM

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Abstract

The invention discloses a method for producing sugar charcoal particles by using physical method. Ammonium polyphosphate and petroleum hard bitumen are added into coal property and proper exciple carbonized material and then crushed; the crushed material is kneaded after being added with coal tar and water solution containing inorganic compound to be extruded into strip material, and then the obtained material is dried, carbonized at 500-550 DEG C and activated at 850-950 DEG C. The obtained sugar charcoal particles have the technical performance of physical carbon and chemical carbon, and caramel has good decolourization and high abrasive resistance, so that the sugar charcoal particles can be widely applied for decolourization, water treatment and recovery of organic macromolecular solution, for example, the decolourization of citric acid, monosodium glutamate, lactic acid and starch sugar, the recovery of high boiling macromolecular organic solvents such as gasoline, dimethyl diamide, etc.

Description

Technical field [0001] The present invention relates to a production method of activated carbon, more specifically to a method for physically producing granular activated carbon. Background technique [0002] Granular activated carbon is usually activated carbon made by activating granular woody and coal-based carbonized materials with water vapor at high temperature. This kind of granular carbon is activated by physical method, so it is called physical granular carbon. This kind of activated carbon has adsorption capacity, but it does not have caramel decolorization power, and caramel decolorization power is a very important adsorption index of activated carbon. Powdered activated carbon produced by chemical method has high caramel decolorization power, which is called powdered sugar charcoal. In terms of application, powdered sugar charcoal can only be used in the decolorization tank to decolorize the medium in liquid phase, but not in fixed bed or moving bed column. On...

Claims

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Application Information

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IPC IPC(8): C01B31/08
Inventor 周之鹏
Owner HUAIBEI DAHUA ACTIVE CARBON
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