High-temperature coke oven raw coke oven gas pipeline cleaning device adopting compressed nitrogen injection

A technology of compressing nitrogen and raw coal gas, which is applied in the cleaning field, can solve the problems of loss of heat energy, reduction of dust content, reduction of pipeline flow section, etc., and achieve the effects of improving heat utilization efficiency, keeping clean, and reducing heat loss

Inactive Publication Date: 2013-03-13
ACRE COKING & REFRACTORY ENG CONSULTING CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the high-temperature raw gas produced during coking in domestic coking plants is sprayed with ammonia water to cool down when entering the gas collection pipe through the coke oven rising pipe, and then enters the chemical production workshop. , solid three-phase flow state, it is not easy to have the problem of pipeline blockage, but the method of this process to deal with high-temperature raw gas is to cool the high-temperature raw gas above 700 ℃, and a large amount of heat energy is lost in vain, which is contrary to the national energy-saving policy. In practice It was found that high-temperature coke oven raw gas pipelines are often blocked, especially when the pipeline insulation is not good, the tar is easy to condense on the pipe wall, and the solid particles in the flue gas settle on the surface to form a hardened layer, which eventually leads to the reduction of the flow section of the pipeline , thereby changing the hydraulic characteristics of the entire pipeline system. From the knowledge of fluid mechanics, when the pipeline cross-section decreases, the resistance of the pipeline increases, and the hydraulic characteristic curve will become steeper, while the fan performance curve of the induced draft fan is fixed, so The working point will move to the left

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  • High-temperature coke oven raw coke oven gas pipeline cleaning device adopting compressed nitrogen injection
  • High-temperature coke oven raw coke oven gas pipeline cleaning device adopting compressed nitrogen injection

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[0013] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0014] Such as figure 1 with figure 2 As shown, the high-temperature coke oven raw gas pipeline cleaning device of the present invention using compressed nitrogen injection is composed of pulse valve 1, gas bag 2, pulse injection connecting pipe 3, pipeline nozzle 4 and pulse injection PLC control system 5. One end of the pulse valve 1 is connected to the pulse injection PLC control system 5, the other end of the pulse valve 1 is connected to the air bag 2, and the air bag 2 is connected to the pipeline nozzle 4 through the pulse injection connection pipe 3, the pulse valve 1, There are one or more pulse injection connecting pipes 3 and pipe nozzles 4, and compressed nitrogen with a pressure of 0.2-0.4 MPa is provided in the air bag 2. The pulse valve 1 is controlled by the pulse injection PLC control system 5 according to the set program to ...

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Abstract

The invention relates to a high-temperature coke oven raw coke oven gas pipeline cleaning device adopting compressed nitrogen injection, which comprises a pulse valve, a gas bag, a pulse injection connecting pipeline, a pipeline nozzle and a pulse injection PLC control system, wherein one end of the pulse valve is connected with the pulse injection PLC control system; the other end of the pulse valve is connected with the gas bag; and the gas bag is connected with the pipeline nozzle through the pulse injection connecting pipeline. The device has the benefits that injection medium adopts compressed nitrogen, the compressed nitrogen in the gas bag is instantaneously injected into a cleaned high-temperature raw coke oven gas pipeline, injection gas stream filling a whole pipeline section is formed in the high-temperature raw coke oven gas pipeline, the pulse injection PLC control system can set the injection sequence and the injection time according to production practice, the cleaning of the pipeline is effectively maintained, and the pipeline is prevented from being blocked.

Description

technical field [0001] The invention relates to the field of cleaning technology, in particular to a pulse injection pipeline cleaning device which uses compressed nitrogen to clean high-temperature coke oven raw gas pipelines. Background technique [0002] At present, the high-temperature raw gas produced during coking in domestic coking plants is sprayed with ammonia water to cool down when entering the gas collection pipe through the coke oven rising pipe, and then enters the chemical production workshop. , solid three-phase flow state, it is not easy to have the problem of pipeline blockage, but the method of this process to deal with high-temperature raw gas is to cool the high-temperature raw gas above 700 ℃, and a large amount of heat energy is lost in vain, which is contrary to the national energy-saving policy. In practice It was found that high-temperature coke oven raw gas pipelines are often blocked, especially when the pipeline insulation is not good, the tar is...

Claims

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Application Information

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IPC IPC(8): B08B9/032
Inventor 王充高飞赵希超关汉波
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP
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