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Activated coke for coal-based desulfurization and preparation method thereof

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

Active Publication Date: 2012-02-15
BEIJING SPC ENVIRONMENT PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Activated coke for coal-based desulfurization and preparation method thereof
  • Activated coke for coal-based desulfurization and preparation method thereof

Examples

Experimental program
Comparison scheme
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 activated coke for coal-based desulfurization, which comprises the following steps: breaking first type coal and second type coal into coal blocks respectively; grinding the coal blocks into pulverized coal; After adding binder and water, kneading to make coal plaster; extruding the coal plaster into cylindrical carbon columns, and then drying and carbonizing; sieving the carbonized carbonized material to remove unqualified Carbonized material: After the qualified carbonized material is activated to form the activated material, it is screened to remove the unqualified activated material, that is, the qualified activated coke for coal-based desulfurization is prepared. The present invention also relates to an activated coke for coal-based desulfurization prepared by applying the above-mentioned preparation method of activated coke for coal-based desulfurization. The invention utilizes the first type of coal with low added value and the second type of coal with high added value to prepare a special large particle activated coke product for flue gas desulfurization with low production cost, good quality, significantly improved desulfurization effect and great market competitiveness .

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 Patents(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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