Method for grading and conditioning coal by stable obtained coke oven smoke

A technology of coke oven flue and coke oven, which is applied in coke oven and petroleum industry to achieve the effect of reducing moisture and stabilizing suction

Inactive Publication Date: 2008-06-04
SHANDONG IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, almost all the waste gas in the coking process in the world is released, which is inconsistent with the current concept of energy saving and emission reduction, and the construction of a circular economy. How to rationally use the heat in the coking waste gas is a very good subject

Method used

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  • Method for grading and conditioning coal by stable obtained coke oven smoke
  • Method for grading and conditioning coal by stable obtained coke oven smoke
  • Method for grading and conditioning coal by stable obtained coke oven smoke

Examples

Experimental program
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Embodiment Construction

[0018] The mixed coal is transported to the upper part of the fluidized bed 04 through the belt conveyor 05.

[0019] The coke oven flue exhaust gas (temperature about 230°C) is drawn from the 3# and 4# coke oven sub-flue through the manhole through the exhaust gas induced draft fan 104 and 204, and then passes through the flow regulating valve 01 and the pneumatic three-way switching valve 02. The road drum enters the lower part of both sides of the fluidized bed 04, and the two sides are divided into 6 branch pipes to enter the fluidized bed, pass through the sieve plate, and fully contact the raw coal to evaporate the water in the coal to achieve the purpose of humidity control. This process requires the flue suction of each coke oven to be stable, and the pressure behind the fan is stable, so as to ensure that the gas pressure entering the fluidized bed is stable.

[0020] The exhaust gas at the top of the fluidized bed is drawn into the bag filter by the dust removal fan ...

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Abstract

The invention discloses a method of steadily obtaining coke oven smoke for coal classification and moisture control, and is characterized in that: a waste gas extraction point of a coke oven flue is selected, frequency conversion control of a draught fan is done to obtain the waste gas in the coke oven flue for realizing the airflow classification and moisture control of the coking coal, the high temperature waste gas is maximally obtained under the premise of assuring the stability of the suction of the coke oven flue. The method steadily obtains the coke oven smoke as the gas medium of classification and moisture control in the pre-treatment of the coking coal while the production of the coke oven is not affected, and is applied in the waste energy utilization of the coke oven waste gas in the coking industry.

Description

technical field [0001] The invention relates to the field of coal pretreatment in the coking industry, in particular to a method for stably obtaining coke oven flue gas in a coal pretreatment device for coal classification and humidity control. Background technique [0002] It is estimated that the heat taken away by coking exhaust gas accounts for about 3.6% of coking production energy, about 2310MJ of heat per ton of coke, and the annual coke production in China exceeds 250 million tons. It can be seen that the waste heat energy in exhaust gas is considerable. At present, almost all the waste gas in the coking process in the world is released, which is inconsistent with the current concept of energy saving and emission reduction, and the construction of circular economy. How to rationally use the heat in the coking waste gas is a very good subject. [0003] Stable high-temperature gas is required to cooperate with coal graded humidity control, and the temperature of a larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/08
Inventor 耿晓宁蒋升华范昆姬厚华谢淑霞范者峰张成雷徐继红
Owner SHANDONG IRON & STEEL CO LTD
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