Wet type boiler flue gas desulfurization and dust removal device

Abstract

The invention discloses a wet type boiler flue gas desulfurization and dust removal device. A bottom plate is arranged on one side of the lower part of a body, a gas feeding pipe is arranged on one side of the upper part of the bottom plate, washing liquid is arranged on the lower side in the body, a gas outlet of the gas feeding pipe is arranged in the washing liquid, a spray device is arranged on one side in the body, a defogging device is arranged on one side of the upper part of the spray device, a gas gathering hood is arranged on one side of the upper part of the body, the gas gatheringhood is in a reversed funnel shape, a gas discharging pipe is arranged on one side of the upper part of the gas gathering hood, a liquid feeding pipe is arranged on one side of the lower part of the body, a sewage draining pipe is arranged on one side of the liquid feeding pipe, and valves are arranged on the liquid feeding pipe and the sewage draining pipe. According to the wet type boiler flue gas desulfurization and dust removal device disclosed by the invention, a circular turnable type defogging device is utilized to change the flue gas flowing direction continuously, so that flue gas canstrike a defogging plate for multiple times, the washing liquid carried in the flue gas can be removed, the washing liquid is prevented from being drained out along with the flue gas, and environmental pollution is avoided; meanwhile, waste of the washing liquid is reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, in particular to a wet boiler flue gas desulfurization and dust removal device. Background technique [0002] At present, large-scale pharmaceutical industrial parks adopt centralized heating, which can provide stable and reliable high-grade heat sources and save energy; however, some areas still need to use coal-fired boilers to provide heat sources, and coal will generate a lot of dust and dust after burning in the boilers. Sulfur dioxide, dust with a particle size of less than 10 μm falls to the ground very slowly, especially dust with a particle size of less than 0.1 μm can float in the sky all year round and is called "floating dust"; "floating dust" contains various toxic metal particles, such as being inhaled by people After the lungs, it will cause various respiratory diseases and seriously endanger people's health; while sulfur dioxide meets the water vapor in ...

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Problems solved by technology

[0002] At present, large-scale pharmaceutical industrial parks adopt centralized heating, which can provide stable and reliable high-grade heat sources and save energy; however, some areas still need to use coal-fired boilers to provide heat sources, and coal will generate a lot of dust and dust after burning in the boilers. Sulfur dioxide, dust with a particle size of less than 10 μm falls to the ground very slowly, especially dust with a particle size of less than 0.1 μm can float in the sky all year round and is called "floating dust"; "floating dust" contains various toxic metal particles, such as being inhaled by people After the lungs, it will cause various respiratory diseases and seriously endanger people's health; while sulfur dioxide meets the water vapor in the air to form sulfuric acid mist, which is often combined with "floating dust" to endanger the living environment of animals and plants. In addition, sulfur dioxide is also a direct cause of acid rain. Because of the high temperature of boiler flue gas, the use of wet spray desulfurization and dust removal can not only achieve the purpose of desulfurization and dust removal, but also reduce the temperature of the flue gas; but after the flue gas is purified by the spray tower, part of the washing liquid is discharged together with the flue gas On the one hand, it will cause secondary pollution to the environment, and on the other hand, it will cause waste of washing liquid

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