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Flow type asphalt ball oxidation non-melting method

A pitch ball, flow technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the corresponding problems, achieve the effect of improving production capacity, simple preparation process, and uniform oxidation and non-melting

Active Publication Date: 2017-11-28
SHANXI XINHUA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also many Chinese patents such as Chinese invention patent 97101617 "a method for preparing spherical activated carbon" and Chinese invention patent 201010143602 "a method for preparing pitch balls", which simply mention oxidation without melting, but they do not discuss how to oxidize without melting. Melting treatment provides the corresponding method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of flow type asphalt ball oxidation non-melting method, comprises the steps:

[0026] The first stage: heating stage

[0027] Put the asphalt balls into the rotary furnace, and 100L of air per hour per kilogram of pitch ball activated carbon is passed into the rotary furnace, and the temperature is raised from room temperature to 1250°C at a heating rate of 30-35°C / h, and the rotating speed of the rotary furnace is 2r / min Rotate and stay for 1h to obtain preliminary oxidized pitch ball activated carbon;

[0028] The second stage: the oxidation stage

[0029] According to each kilogram of pitch ball activated carbon, 800L of air is required to be passed into the rotary furnace per hour, and the temperature is raised from 120°C to 300°C at a heating rate of 10-15°C / h. The rotary furnace rotates at a speed of 10r / min and stays for 2.5h;

[0030] The third stage: stable stage

[0031] According to each kilogram of pitch ball activated carbon, 600L of air is requir...

Embodiment 2

[0033] A kind of flow type asphalt ball oxidation non-melting method, comprises the steps:

[0034] The first stage: heating stage

[0035] Put the asphalt balls into the rotary furnace, and 200L of air per hour per kilogram of pitch ball activated carbon is passed into the rotary furnace, and the temperature is raised from room temperature to 100°C at a heating rate of 45-50°C / h, and the rotary furnace is heated at a rate of 0.5r / min Rotate at a rotating speed and stay for 2 hours to obtain initially oxidized pitch ball activated carbon;

[0036] The second stage: the oxidation stage

[0037] According to each kilogram of pitch ball activated carbon, 500L of air needs to be passed into the rotary furnace per hour, and the temperature is raised from 100°C to 350°C at a heating rate of 15-30°C / h. The rotary furnace rotates at a speed of 15r / min and stays for 2h;

[0038] The third stage: stable stage

[0039] According to each kilogram of pitch ball activated carbon, 400L of...

Embodiment 3

[0041] A kind of flow type asphalt ball oxidation non-melting method, comprises the steps:

[0042] The first stage: heating stage

[0043] Put the asphalt balls into the rotary furnace, and 300L of air per hour per kilogram of pitch ball activated carbon is passed into the rotary furnace, and the temperature is raised from room temperature to 150°C at a heating rate of 35-45°C / h, and the rotary furnace is heated at a rate of 0.1r / min Rotate at a rotating speed and stay for 3 hours to obtain initially oxidized pitch ball activated carbon;

[0044] The second stage: the oxidation stage

[0045] According to each kilogram of pitch ball activated carbon, 1000L of air needs to be passed into the rotary furnace per hour, and the temperature is raised from 150°C to 320°C at a heating rate of 20-30°C / h. The rotary furnace rotates at a speed of 5r / min and stays for 1.5h;

[0046] The third stage: stable stage

[0047] According to each kilogram of pitch ball activated carbon, 700L ...

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PUM

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Abstract

The invention relates to a method for preparing pitch ball activated carbon, specifically a flow-type pitch ball oxidation and non-melting method, comprising the following steps: the first stage: in the heating stage, the pitch ball is put into a rotary furnace, and the pitch ball activated carbon is charged per hour per kilogram of pitch ball activated carbon. It needs 100-500L of air to be passed into the rotary furnace, and the temperature is raised from room temperature to 100-150°C at a heating rate of 30-50°C / h. The rotary furnace rotates at a speed of 0.1-5r / min, and stays for 0.5-3h to obtain preliminary oxidation. Pitch ball activated carbon. The key point of this application is that in the process of oxidation and non-melting treatment, the adapted oxidation and non-melting equipment-rotary furnace is adopted, and the process parameters such as oxidation temperature, heating rate, and oxidation time are specially designed, and industrial production can be realized.

Description

technical field [0001] The invention relates to a method for preparing pitch pellet activated carbon, in particular to a flow type pitch pellet oxidation non-melting method. Background technique [0002] The full name of pitch ball activated carbon is pitch-based spherical activated carbon, which is a kind of spherical activated carbon. Because it has a series of advantages such as good sphericity, uniform filling, high mechanical strength, good fluidity, wear resistance, corrosion resistance and low resistance when used in a fixed bed, it is widely used in many fields and is a new type of excellent performance. carbon material. Oxidation and non-melting process is essential in the preparation process. [0003] At present, many patents involve the technology of preparing spherical activated carbon from asphalt, such as Chinese invention patent 201210317727 "Preparation method of pitch-based spherical activated carbon with low energy consumption", which uses nitrogen contai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/318
Inventor 郭军军金彦任赵卯青李开喜裴佩王德周赵婷安丽花武越邢浩洋
Owner SHANXI XINHUA CHEM