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A preheating process of dust collector for filtering combustible dust-laden gas

A dust collector and process technology, applied in the fields of dispersed particle filtration, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of difficult to guarantee the safety performance of combustible components, low preheating temperature, and difficult to apply, so as to improve the safety performance of equipment , Small footprint, reasonable layout effect

Active Publication Date: 2016-08-24
HENAN DRAGON INTO COAL TECH CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method preheats the interior of the dust collector by using the heat energy of the exhaust smoke in the ignition stage of the boiler, and preheats the ash hopper of the dust collector by using the heat energy of the exhaust smoke in the ignition stage of the boiler, so as to eliminate the dust removal that may occur in the ignition stage of the boiler. Condensation inside the dust collector, but its preheating temperature is low, and it is difficult to apply to gases containing coal tar and other strict requirements on the internal temperature of the dust collector, and it is difficult to guarantee the gas safety performance of combustible components

Method used

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  • A preheating process of dust collector for filtering combustible dust-laden gas
  • A preheating process of dust collector for filtering combustible dust-laden gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A dust collector preheating process for filtering combustible dust-laden gas, involving equipment including a hot blast pipe 3 arranged on the side of the dust collector 2 through a support frame 1, and a hot blast stove 4 and a fan 5 are connected in series to the hot blast pipe 3 , the fan 5 is arranged at the front section of the air intake of the hot blast stove 4, and the air outlet of the clean air chamber of the dust collector 2 is connected to the clean air delivery pipeline 7 of the dust collector 2, and the clean air delivery pipeline 7 is located at a high position, and the The clean gas conveying pipeline 7 is provided with the branch air pipe 8 connecting the blower fan 5, the output end of the hot blast stove 4 is provided with a chimney 9, and an emptying mechanism 10, temperature Detection device and oxygen content detection device, described emptying mechanism 10 and chimney 9 are provided with electric regulating valve 11, and described emptying mechani...

Embodiment 2

[0026]The difference from Embodiment 1 is that: the hot air duct 3 is provided with several groups of output end branches, which can be one group, two groups, four groups, or even more, and the several groups of output end branches are respectively connected to parallel dust collectors 2 The dusty gas intake pipe 13.

Embodiment 3

[0028] The difference from Embodiment 1 or 2 is that: the heating temperature in the heating stage is 330°C, and the replacement adjustment stage makes the oxygen content in the dust collector 2 after adjustment be 1.4%, wherein the temperature rising rate in the heating stage is controlled to be <100°C / h.

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Abstract

The invention discloses a dust collector preheating process for filtering combustible dust-containing gas, which includes a cold air discharge stage, a temperature rise stage and a gas replacement adjustment stage of the dust collector. The low-temperature gas in the device enters the heating stage after the low-temperature gas is discharged, and the temperature is raised to 330-1200°C for gas replacement adjustment. After the gas replacement adjustment stage adjusts the oxygen content in the dust collector to a safe range, it enters the conventional filtration and dust removal process. The invention is novel and ingenious in design, has a good effect in the preheating link of the dust collector, realizes the innovation of the preheating process of the high temperature dust collector, and is suitable for preheating the dust collector for filtering dusty gas with high temperature and high tar content, ensuring The filter element has good filtering effect, long service life and high economic benefit.

Description

technical field [0001] The invention belongs to the technical field of dust removal and heating equipment for dust collectors, and in particular relates to a dust collector preheating process for filtering combustible dust-containing gas. Background technique [0002] At present, my country is short of oil and natural gas resources, and coal will remain the most important primary energy source for a long time to come. However, there are many problems and challenges in the process of coal conversion and utilization, such as low comprehensive utilization efficiency, serious environmental pollution, shortage of water resources, and large carbon dioxide emissions. Therefore, it is an inevitable choice for the development of my country's energy industry to develop coal efficient and clean comprehensive utilization technology to achieve energy conservation and emission reduction. The "Twelfth Five-Year Plan" for the development of clean coal technology and technology, which is en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/42
Inventor 朱书成赵家亮李金峰庞志峰
Owner HENAN DRAGON INTO COAL TECH CO LTD
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