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

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...

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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

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