Coal-based activated coke for desulfuration and preparation method thereof

An activated coke, coal-based technology, applied in the field of coal chemical industry, can solve problems such as endangering human health, destroying the ecological environment, affecting human genes, etc., and achieves the effect of large heap ratio, high activation yield and good strength

Active Publication Date: 2009-07-22
BEIJING SPC ENVIRONMENT PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, air pollution also seriously damages the ecological environment and seriously endangers human health, and even affects human genes and causes genetic diseases

Method used

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  • Coal-based activated coke for desulfuration and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0028] figure 1 It is a schematic flow chart of the method for preparing activated coke for coal-based desulfurization of the present invention. Such as figure 1 Shown, this preparation method comprises the following steps:

[0029] Step 10, breaking the first type of coal with a volatile content greater than 35% and the second type of coal with a volatile content less than 15% into coal blocks respectively.

[0030] Volatile matter is an important basis index for coal classification, that is, the content of coal after the moisture is subtracted from the escaped substance (gas or liquid) when the coal is heated in isolation from the air at a certain temperature. The first type of coal and the second type of coal are respectively broken into coal pieces smaller than 3 cm. The first type of coal is lignite, and the second type of coal is bituminous coal or anthracite.

[0031] Step 20, pulverized coal obtained by grinding the crushed first type coal and second type coal.

...

Embodiment 1

[0049] Firstly, the lignite and bituminous coal are respectively crushed into coal pieces smaller than 3 cm; then, the crushed lignite and bituminous coal are ground into 190-mesh coal powder; secondly, 50% lignite and 30% bituminous coal are taken by weight percentage, and added The coal tar of 20% by weight and the water accounting for 5% of the total weight of lignite, bituminous coal and coal tar are kneaded at 50°C to make coal paste; again, the coal paste is extruded under a pressure of 15 MPa After making a cylindrical carbon column with a diameter of 5 mm, it is naturally dried and carbonized at 600 ° C for 40 minutes; then, the carbonized carbonized material is screened to remove unqualified carbonized material; finally, the qualified After the activated carbonized material is activated at 800°C for 60 minutes to form the activated material, it is screened to remove the unqualified activated material, and then the qualified activated coke for coal-based desulfurization...

Embodiment 2

[0051] Firstly, the lignite and bituminous coal are respectively broken into coal pieces smaller than 3 cm; then, the crushed lignite and bituminous coal are ground into 160-mesh coal powder; secondly, 45% lignite and 32% bituminous coal are taken by weight percentage, and Add 23% by weight of pitch and 10% of the total weight of lignite, bituminous coal and pitch, and knead at 90°C to make coal paste; again, the coal paste is extruded under a pressure of 18 MPa. After forming a cylindrical carbon column with a diameter of 9 mm, dry it at 40°C and carbonize it at 625°C for 60 minutes; then, sieve the carbonized carbonized material to remove unqualified carbonized material; finally, put Qualified carbonized materials are activated at 825°C for 40 minutes to form activated materials, and then sieved to remove unqualified activated materials to prepare qualified activated coke for coal-based desulfurization.

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Abstract

The invention relates to a method for preparing active coke for coal based desulfurization. The method comprises the following steps: crushing the first-class coal and the second-class coal into coal briquettes respectively; grinding the coal briquettes into pulverized coal; picking up the coal which is ground into the pulverized coal, adding a binder and water, and subjecting the mixture to kneading treatment to obtain coal paste; after forming the coal paste by extrusion to obtain a cylindrical charcoal column, drying and charring the charcoal column; screening the charring material which is charred to remove the unqualified charring material; and activating the qualified charring material to form an activated material, namely preparing the qualified active coke for coal based desulfurization. In the method, the first-class coal with low added-value and the second-class coal with high added-value are used to prepare macro-aggregate active coke products particularly for fume desulfurizatio with the advantages of low production cost, desirable quality, obvious desulfurizatio effect and strong market competitive power.

Description

technical field [0001] The invention relates to an active coke and a preparation method thereof, in particular to an active coke for coal-based desulfurization and a preparation method thereof, belonging to the field of coal chemical industry. Background technique [0002] According to the monitoring report of the World Health Organization, my country occupies 8 of the 10 most polluted cities in the world, mainly due to SO in the atmosphere. 2 and the concentration of total suspended particulates exceeds the standard, and China is the third largest acid rain area next to Europe and North America, and the acid rain area accounts for 40% of the country's land area. 2 Direct economic losses caused by pollution are as high as hundreds of billions of dollars. In addition, air pollution also seriously damages the ecological environment and seriously endangers human health, and even affects human genes and causes genetic diseases. Our government's response to SO 2 And acid rain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/08
Inventor 张开元龚得喜肖永丰
Owner BEIJING SPC ENVIRONMENT PROTECTION TECH
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