Efficient dust removal desulfurization filter

Abstract

The invention relates to the technical field of environmental protection dust removal equipment, and discloses an efficient dust removal desulfurization filter. The efficient dust removal desulfurization filter comprises a barrel; an annular water collection pipe is fixedly installed on the periphery of the top of the barrel; a water intake device is fixedly installed at one side of the top of thebarrel; an overflow tank located below the water intake device is fixedly installed at one side of the top of the barrel; an ash through hole is fixedly installed at the other side of the middle of the barrel; and a flue inlet is fixedly installed at one side of the middle of the barrel. According to the efficient dust removal desulfurization filter provided by the invention, by adding a secondary air inlet device at the middle position of the barrel, oxygen can be provided for combustion of coal inside the barrel, the secondary air volume is controlled to adjust the combustion and air volumeratio of a boiler, the proper excess air coefficient in the boiler is maintained, sufficient combustion of the coal is ensured, the oxygen content of the tail flue is maintained at a lower level, thegeneration rate of sulfurous acid is reduced, and the corrosion of the flue and a fan is reduced.

Description

technical field [0001] The invention relates to the technical field of environmental protection dust removal equipment, in particular to a high-efficiency dust removal and desulfurization filter. Background technique [0002] The wide application of desulfurization and dust removal equipment can effectively reduce the emission of sulfur dioxide and particulate matter, and has played a very important role in improving the environment. The horizontal flue corrosion of the former steel structure will cause low-temperature sulfur corrosion due to the sulfurous acid formed by the combination of water vapor in the flue gas and sulfur dioxide generated after sulfur combustion. Low-temperature sulfur corrosion often occurs in air preheaters and boilers with low flue gas temperatures. At the tail flue, dust removal system, etc., when the temperature of the heating surface in contact with the flue gas is lower than the dew point of the flue gas, the sulfurous acid generated by the rea...

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Problems solved by technology

[0002] The wide application of desulfurization and dust removal equipment can effectively reduce the emission of sulfur dioxide and particulate matter, and has played a very important role in improving the environment. The horizontal flue corrosion of the former steel structure will cause low-temperature sulfur corrosion due to the sulfurous acid formed by the combination of water vapor in the flue gas and sulfur dioxide generated after sulfur combustion. Low-temperature sulfur corrosion often occurs in air preheaters and boilers with low flue gas temperatures. At the tail flue, dust removal system, etc., when the temperature of the heating surface in contact with the flue gas is lower than the dew point of the flue gas, the sulfurous acid generated by the reaction of water vapor and sulfur dioxide in the flue gas will condense on the heating surface, severely corroding the heating surface. surface and cause "blocking dust" and other phenomena

[0003] At present, the main solution to the problem of acid corrosion is to use secondary air (combustion-supporting air) as the main solution. However, from the perspective of the actual production process, the input of secondary air will cause the direction of airflow inside the boiler to change, driving the boiler inside. The accumulation of fuel in the same direction cannot fully burn and slows down the speed of fuel combustion and reduces the production rate. Therefore, we propose a high-efficiency dust removal and desulfurization filter

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