Preheating process of dust remover for filtering combustible dusty gas

Abstract

The invention discloses a preheating process of a dust remover for filtering combustible dusty gas. The preheating process comprises a dust remover cold-air exhausting period, a temperature rise period and a gas replacement-adjustment period and specifically comprises the steps of inputting high-temperature gas through a hot air pipeline to exhaust low-temperature gas in the dust remover in the cold-air exhausting period, entering the temperature rise period after the low-temperature gas is exhausted, raising the temperature to 330-1200 DEG C, carrying out gas replacement and adjustment, and entering a conventional filtering-dust removal process link after adjusting the oxygen content in the dust remover to a safety range in the gas replacement-adjustment period. The preheating process is novel and ingenious, has a good utilization effect in a booting preheating link of the dust remover, realizes the innovation of the preheating process of the high-temperature dust remover, is suitable for preheating the dust remover for filtering the high-temperature and high-tar-content dusty gas and guarantees a good filtering effect, long service cycle and high economic benefit of a filter core.

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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