Chimney inner tube condensate collection and discharge system and chimney

Abstract

The invention discloses a chimney inner-barrel condensed fluid collection and discharge system and a chimney. The chimney inner-barrel condensed fluid collection and discharge system comprises a plurality of fluid collection devices arranged in the height direction of the chimney, and condensed fluid collection pipes arranged on the outer side wall of an inner barrel of the chimney. Each fluid collection device comprises a fluid collection ring arranged on the inner wall of the inner barrel of the chimney, a collection box arranged at the lowest elevation position of the fluid collection ring, and a fluid discharge pipe connected with the fluid collection ring and each condensed fluid collection pipe. Condensed fluid is collected through the fluid collection rings on the inner side wall of the inner barrel of the chimney, flows into the collection boxes on the end portions of the fluid collection rings in a confluence mode, is guided out to the condensed fluid collection pipes through the fluid discharge pipes, is received by the condensed fluid collection pipes, and is discharged to an external sewage treatment system. According to the chimney inner-barrel condensed fluid collection and discharge system, due to the fact that random flow and local accumulation of the condensed fluid on the inner wall of the inner barrel can be reduced, the corrosive threat of the condensed fluid to the inner wall of the inner barrel can be reduced, and the frequency of chimney rain can be reduced.

Description

technical field [0001] The invention relates to the field of thermal power generation, in particular to a chimney in a thermal power plant. Background technique [0002] Since the beginning of this century, thermal power plants have added desulfurization systems one after another. The wet limestone washing method is the most widely used and mature process in the world today, and it is also the leading process for desulfurization in thermal power plants. At present, traditional chimneys only have a condensate collection pipe at the bottom of the flue inlet, which can only discharge part of the condensate. The inner tube of the chimney still faces the following problems: ①After the flue gas is wet desulfurized, although the content of sulfur dioxide in the flue gas However, due to the wet desulfurization, the flue gas humidity increases and the temperature decreases, the flue gas is easy to condense on the inner wall of the chimney, and combines with the residual medium in th...

AI Technical Summary

Problems solved by technology

At present, traditional chimneys only have a condensate collection pipe at the bottom of the flue inlet, which can only discharge part of the condensate. The inner tube of the chimney still faces the following problems: ①After the flue gas is wet desulfurized, although the content of sulfur dioxide in the flue gas However, due to the wet desulfurization, the flue gas humidity increases and the temperature decreases, the flue gas is easy to condense on the inner wall of the chimney, and combines with the residual medium in the flue gas to form a highly corrosive condensate, which is harmful to the inner tube of the chimney. ②When the velocity of the flue gas in the chimney is higher than the reverse flow velocity of the material of the chimney, the condensate on the inner wall of the chimney will flow upwards, because this part of the liquid entrained by the flue gas The droplets are quite large, and the flue gas outside the chimney cannot completely mix with the dry air before falling to the ground to evaporate the droplets, and the droplets will fall on buildings, equipment, cars, etc. near the chimney of the power plant, causing secondary damage. pollution, forming what is commonly known as chimney rain

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