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Preparation method of activated carbon adsorbent special for removing heavy hydrocarbon

An activated carbon adsorption, heavy hydrocarbon technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of excessive ineffective pores and insufficient total pore volume, achieve excellent adsorption performance, and realize the miniaturization of the device. , the effect of high mechanical strength

Active Publication Date: 2014-08-13
南京正森环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Based on this point of view, ordinary activated carbon cannot meet such needs due to insufficient total pore volume and too many invalid pores.

Method used

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  • Preparation method of activated carbon adsorbent special for removing heavy hydrocarbon
  • Preparation method of activated carbon adsorbent special for removing heavy hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crush 1000g of anthracite with an ash content less than 3% after dense medium washing to particles less than 8mm, grind it in a ball mill to 200 mesh and pass more than 95%, put it into a kneader, add 250g of coal tar, 60g of coal tar pitch and 60g of water , then add 50g of polyethylene glycol, mix and stir for 50min, press it into Φ4.0mm particles in the extruder, put it in the carbonization furnace after drying and raise the temperature to 550°C for carbonization for 60min, and put the carbonized material in the activation furnace Activation at 920°C for 5hr.

Embodiment 2

[0029] Crush 1000g of anthracite with an ash content less than 3% after dense medium washing to particles less than 8mm, grind it in a ball mill to 200 mesh and pass more than 95%, put it into a kneader, add 250g of coal tar, 60g of coal tar pitch and 60g of water , then add 30g of polyethylene glycol and 70g of dimethyldiamine, mix and stir for 70min, press into Φ4.0mm particles in extruder, dry them, place them in a carbonization furnace and raise the temperature to 560°C for 70min to carbonize The material was activated in an activation furnace at 880°C for 4.5h.

Embodiment 3

[0031] Break 1000g of non-caking bituminous coal with an ash content less than 3% after dense medium washing to particles less than 8mm, grind it in a ball mill to 200 mesh and pass more than 95%, put it into a kneader, add 200g of coal tar, 80g of coal Asphalt and 60g of water, then add 100g of polyethylene glycol, mix and stir for 50min, press into Φ4.0mm pellets in extruder, dry and place in carbonization furnace to heat up to 530°C for 90min and carbonize the material in Activation at 900°C for 5.5h in an activation furnace.

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Abstract

The invention discloses a preparation method of an activated carbon adsorbent special for removing heavy hydrocarbon. The method comprises the steps of performing treatment on raw materials containing carbon until the ash content is less than 3wt%, performing powder grinding, adding a binding agent and a pore regulation agent, and performing kneading molding, carbonization and activation to prepare the activated carbon adsorbent, wherein the BET (Brunauer, Emmett and Teller) method specific surface area of the obtained activated carbon adsorbent is 1200-1600m<2> / g; a Cranston-Inkley method measures that the volume of tiny pores of the activated carbon adsorbent of which the aperture is in the range of 1.0-2.8 nanometers is more than or equal to 0.6mL / g, the total pore volume is more than or equal to 0.8mL / g, and the mechanical strength is more than or equal to 95%. A product disclosed by the invention is excellent in adsorption performance, has a much higher heavy hydrocarbon adsorption capacity than that of normal activated carbon, has an adsorbing capacity of more than or equal to 32wt%, and can be recycled.

Description

technical field [0001] The present invention relates to the manufacture method of activated carbon adsorbent. Specifically, it relates to a preparation method of a special activated carbon adsorbent for removing heavy hydrocarbons. Background technique [0002] In the current world's countermeasures against environmental problems and diversification of resources, the use of natural gas as an alternative raw material for petroleum continues to increase in the field of energy. [0003] As the production of synthesis gas (GTL) using natural gas as raw material, Fischer-Tropsch (FT) synthesis reaction (CO plus H 2 Synthesis gas synthesizes hydrocarbons on a catalyst), and in the process of producing synthetic oil mainly composed of linear hydrocarbons, the carbon number of the hydrocarbons produced by the synthesis reaction is not constant, and hydrocarbons of various degrees of polymerization (n number) are produced. In order to realize the effective utilization of FT outlet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 荀波李建中
Owner 南京正森环保科技有限公司
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