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Production method of hollow activated carbon for desulfurization and denitrification

A production method, desulfurization and denitrification technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve problems such as uneven activation of the surface and interior, high cost of use, unstable indicators, etc., to achieve good market application value, The effect of saving resources and stabilizing the adsorption index

Active Publication Date: 2020-05-22
SHANXI XINHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new production method of desulfurization and denitrification activated carbon, which solves the problems of uneven activation inside and outside of the traditional desulfurization and denitrification activated carbon, high stacking weight, unstable index and high cost of use, and is used for dry desulfurization. Denitrification and impregnation field

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  • Production method of hollow activated carbon for desulfurization and denitrification
  • Production method of hollow activated carbon for desulfurization and denitrification
  • Production method of hollow activated carbon for desulfurization and denitrification

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Embodiment 1

[0033] A method for producing hollow activated carbon for desulfurization and denitrification, comprising the steps of:

[0034] (1) Grinding: put bituminous coal, coking coal, coke powder, and asphalt into the pulverizer in a weight ratio of 30:30:25:10 for grinding, and the particle size requires 325 mesh and 70% pass;

[0035] (2) Mixing: Mix the ground carbon powder, coal tar, and water in a weight ratio of 80:10:15, and the mixing temperature is 35°C to 40°C;

[0036] (3) Granulation: add the mixture into the mold to make hollow activated carbon raw material, the outer diameter of the hollow activated carbon raw material is 9.0-10.0mm, and the inner diameter is 2-3mm; then the hollow activated carbon raw material is cut into the required length by a cutter as pellets;

[0037] (4) Drying: The granulated material is dried in a dryer at a drying temperature of 90°C~95°C;

[0038] (5) Carbonization: Put the dry material into the converter for carbonization, the temperature...

Embodiment 2

[0043] A method for producing hollow activated carbon for desulfurization and denitrification, comprising the steps of:

[0044] (1) Grinding: put bituminous coal, coking coal, coke powder, and asphalt into the pulverizer at a weight ratio of 35:20:20:15, and the particle size is required to be 325 mesh and 70% pass;

[0045] (2) Mixing: Mix the ground carbon powder, coal tar, and water in a weight ratio of 80:12:10, and the mixing temperature is 45°C to 50°C;

[0046] (3) Granulation: add the mixture into the mold to make hollow activated carbon raw material, the outer diameter of the hollow activated carbon raw material is 9.0-10.0mm, and the inner diameter is 2-3mm; then the hollow activated carbon raw material is cut into the required length by a cutter as pellets;

[0047] (4) Drying: The granulated material is dried in a dryer at a drying temperature of 95°C~100°C;

[0048] (5) Carbonization: Put the dry material into the converter for carbonization, the temperature is...

Embodiment 3

[0053] A method for producing hollow activated carbon for desulfurization and denitrification, comprising the steps of:

[0054] (1) Grinding: put bituminous coal, coking coal, coke powder, and asphalt into the pulverizer in a weight ratio of 40:25:15:12 for grinding, and the particle size requires 325 mesh and 70% pass;

[0055] (2) Mixing: Mix the ground carbon powder, coal tar, and water in a weight ratio of 80:15:12, and the mixing temperature is 40°C to 45°C;

[0056] (3) Granulation: add the mixture into the mold to make hollow activated carbon raw material, the outer diameter of the hollow activated carbon raw material is 9.0-10.0mm, and the inner diameter is 2-3mm; then the hollow activated carbon raw material is cut into the required length by a cutter as pellets;

[0057] (4) Drying: The granulated material is dried in a dryer at a drying temperature of 100°C~110°C;

[0058] (5) Carbonization: Put the dry material into the converter for carbonization, the temperatu...

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Abstract

The invention discloses a method for producing desulfurization and denitrification hollow activated carbon. The method comprises the following steps: (1) grinding, namely grinding soft coal, coking coal, coke powder and asphalt in a weight ratio of (30-40):(20-30):(15-25):(10-15) in a grinding machine till 70% of the raw materials with granularity of 325 meshes can pass; (2) mixing, namely mixingthe grinded carbon powder, coal tar and water in a weight ratio of 80:(10-15):(10-15) at 35-50 DEG C; and (3) pelletizing, namely pelletizing the mixed material in a pelletizing machine, wherein the diameter of the pelletized material is 9.0-10.0mm, and the inner diameter of the pelletized material is 2-3mm. The method disclosed by the invention is reasonable in design, and compared with conventional desulfurization and denitrification activated carbon, the desulfurization and denitrification hollow activated carbon produced by using the method has the advantages of being activated both insideand outside, light in piling weight, large in adsorption contact area, and the like, and has very good market application values.

Description

technical field [0001] The invention belongs to the field of activated carbon preparation, in particular to a production method of desulfurization and denitrification hollow activated carbon. Background technique [0002] Desulfurization and denitrification activated carbon is mainly used in the treatment of sintering flue gas in steel mills, power plants, cement plants, etc. It is mainly used to remove sulfur dioxide, nitrogen oxides, mercury, dioxins and dust in flue gas. The use of desulfurization and denitrification activated carbon is increasing year by year. In 2016, its use in the country has reached 100,000 tons. It is estimated that the market demand in 2017 will be around 120,000 tons. As the dry desulfurization and denitrification technology gradually matures, the application is more and more extensive, but there are certain problems. Because the desulfurization and denitrification activated carbon is a cylindrical solid carbon, the required carbonization temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/33B01D53/02
CPCB01D53/02B01D2253/102B01D2258/0283
Inventor 雷彭陈琪张会涛黄济民李怀珠张志军佟德刚李若梅
Owner SHANXI XINHUA CHEM