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Preparation method of activated coke

A technology of activated coke and coking coal, applied in separation methods, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as poor desulfurization and denitrification effects, poor adsorption capacity, and low ignition point

Active Publication Date: 2019-05-28
平罗县国宁活性炭有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] At present, the active coke products activated by the Sleep furnace are not effective in desulfurization and denitrification in the process of molten steel smelting due to their shortcomings of coarse porosity, poor adsorption capacity, and low ignition point.

Method used

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  • Preparation method of activated coke
  • Preparation method of activated coke

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Embodiment Construction

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, further description will be given below.

[0016] An embodiment of the present invention provides a method for preparing active coke, comprising the following steps:

[0017] Ingredients: Anthracite, coking coal, and special additives are weighed according to the mass ratio of 50-60%: 30-40%: 5-15%, and mixed evenly to form a mixture; preferably, anthracite, coking coal, and special additives are weighed according to the mass ratio 60%: 40%: 5%, or 50%: 30%: 10% of anthracite, coking coal, and special additives according to the mass ratio, or any combination of values ​​falling within the above range.

[0018] Milling: grinding the mixture to form mixed powder;

[0019] Kneading: Add the mixed powder, coal tar, asphalt, and water into the kneading pot according to the mass ratio of 60-80%: 15-25%: 3-6%: 3-8%, and mix to form a wet mixture. The order of adding coal ...

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Abstract

The embodiment of the invention provides a preparation method of activated coke. The preparation method comprises the following several steps of burdening, powder milling, kneading, pelleting, carbonizing, activating and post oxidizing. According to the preparation method provided by the invention, the step of post oxidizing is also added to an activated material after activation, the step of postoxidizing is used for introducing an oxygen-containing mixed gas to a post oxidizing chamber, oxygen is enabled to react with the surface of carbon in the activated material to form a layer of denseoxidizing film, t not only the strength of the organizational structure of the carbon can be increased, but also the oxygen content in the activated coke is increased, so that the desulfurization anddenitrification abilities of the activated coke in molten steel can be increased.

Description

technical field [0001] The invention relates to the technical field of active coke preparation, in particular to an active coke preparation method. Background technique [0002] Activated coke is a special adsorbent with reasonable pore structure, moderate specific surface area and high compressive strength, which can be regenerated repeatedly during practical application. At present, there are not many types of active coke, which can be divided into 5mm and 9mm according to the particle size, and can be divided into several types such as cylindrical coke, spherical coke, and capsule coke in terms of shape. [0003] The production process of activated coke mainly includes two steps of carbonization and activation. The essence of carbonization is the pyrolysis process of organic matter, including thermal decomposition reaction and thermal polycondensation reaction. Under high temperature conditions, elements such as hydrogen and oxygen contained in organic compounds composit...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02C01B32/318C21C7/064C21C7/04
Inventor 苏国宁
Owner 平罗县国宁活性炭有限公司
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