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A low-cost high-activity catalytic desulfurization active coke and its preparation method

A desulfurization active coke, catalytic technology, applied in the direction of chemical instruments and methods, separation methods, other chemical processes, etc., can solve the problems of high operating cost, low desulfurization capacity, frequent regeneration, etc., to achieve low price, low moisture content, The effect of low production cost

Active Publication Date: 2016-05-25
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a low-cost, high-activity catalytic desulfurization active coke and its preparation method to solve the problems of low desulfurization capacity, frequent regeneration and large usage of the currently used desulfurization active coke. high operating costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this example, the preparation method of catalytic desulfurization active coke is as follows:

[0035] (1) Carbonization: Break the bituminous coal into pellets with a particle size of about 2 mm, place the bituminous coal pellets in a carbonization furnace, and 2 Under protection, the temperature of the carbonization furnace is raised from room temperature to about 600°C at a rate of about 5°C / min, and the carbonization reaction is about 1.5h, and then 2 Naturally cool down to room temperature with the carbonization furnace under protection to obtain the soot coal material;

[0036] (2) Grinding and mixing: pulverize pyrolusite and bituminous coal chemical material with a pulverizer respectively, and pass through a 200 mesh sieve to obtain pyrolusite powder and carbonized material powder with a particle size of no more than 75 μm, and take 100 parts by weight of carbonized material Powder, add 4 parts by weight of pyrolusite powder, then mechanically stir the two un...

Embodiment 2

[0041] In this example, the preparation method of catalytic desulfurization active coke is as follows:

[0042] (1) Carbonization: The bituminous coal is broken into pellets with a particle size of about 2mm, and the bituminous coal pellets are placed in a carbonization furnace. 2 Under protection, the temperature of the carbonization furnace is raised from room temperature to about 500°C at a rate of about 5°C / min, and the carbonization reaction is about 2.0h, and then 2 Naturally cool down to room temperature with the carbonization furnace under protection to obtain the soot coal material;

[0043] (2) Grinding and mixing: pulverize pyrolusite and bituminous coal chemical material with a pulverizer respectively, and pass through a 200 mesh sieve to obtain pyrolusite powder and carbonized material powder with a particle size of no more than 75 μm, and take 100 parts by weight of carbonized material Powder, add 8 parts by weight of pyrolusite powder, then mechanically stir th...

Embodiment 3

[0048] In this example, the preparation method of catalytic desulfurization active coke is as follows:

[0049] (1) Carbonization: The bituminous coal is broken into pellets with a particle size of about 2mm, and the bituminous coal pellets are placed in a carbonization furnace. 2 Under protection, the temperature of the carbonization furnace is raised from room temperature to about 550°C at a rate of about 5°C / min, and the carbonization reaction is about 1.5h, and then 2 Naturally cool down to room temperature with the carbonization furnace under protection to obtain the soot coal material;

[0050] (2) Grinding and mixing: pulverize pyrolusite and bituminous coal chemical material with a pulverizer respectively, and pass through a 200 mesh sieve to obtain pyrolusite powder and carbonized material powder with a particle size of no more than 75 μm, and take 100 parts by weight of carbonized material Powder, add 12 parts by weight of pyrolusite powder, then mechanically stir t...

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Abstract

The invention provides a low-cost high-activity catalytic type desulphurization active coke. The low-cost high-activity catalytic type desulphurization active coke is a material which is activated, extruded and formed by mainly components comprising carbonization soft coal and pyrolusite; the percentage of weight of manganese is not less than 1.6%; the saturated sulphur capacity of the desulphurization active coke is 140-181mg / g; the specific surface area is 319-363m<2> / g; the iodine value is 344-393mg / g. The preparation method of the low-cost high-activity catalytic type desulphurization active coke comprises the following steps: firstly carbonizing smoke, crushing the pyrolusite and the soft coal carbonization material into powder, adding the soft pyrolusite powder into the soft coal carbonization material powder and uniformly mixing, then adding water to mix till the material is free of powder aggregate, adding coal tar, fully kneading and then extruding, forming and drying, causing the dried material to be subjected to activation reaction under the conditions with N2 protection and water vapor, finally cooling the material along with a furnace to room temperature under the N2 protection to obtain the low-cost high-activity catalytic type desulphurization active coke. By virtue of the low-cost high-activity catalytic type desulphurization active coke, the problems of low desulfuration capacity, regeneration frequency, large use amount and high operation cost of the currently-used desulfuration active coke can be solved.

Description

technical field [0001] The invention belongs to the technical field of active coke production, and in particular relates to a low-cost, high-activity catalytic desulfurization active coke and a preparation method thereof. Background technique [0002] Activated coke dry flue gas desulfurization is to control SO 2 One of the most effective means of emission, its basic principle is mainly to use the adsorption characteristics of activated coke to make the SO in the flue gas 2 It reacts with water and oxygen to generate sulfuric acid and is adsorbed on the surface of active coke. After the adsorption is saturated, sulfur resources are recovered and utilized through regeneration. The key to activated coke dry flue gas desulfurization is the performance of activated coke. The factors that determine the performance of activated coke include raw materials, molding process, carbonization, activation process and additives. [0003] CN101485972A discloses a method for preparing acti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/86B01D53/50
Inventor 蒋文举郭家秀黄田
Owner SICHUAN UNIV
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