Chimney structure capable of effectively eliminating white smoke

Abstract

The chimney structure capable of effectively eliminating the white smoke comprises an outer sleeve, a chimney and a spiral fin plate, the outer sleeve is arranged on the outer side of the chimney in a sleeving mode, the outer sleeve is composed of an upper conical section, a shell ring and a lower conical section, the shell ring is welded to the upper conical section and the lower conical section, and the upper conical section and the lower conical section are welded to the chimney. An annular cavity is defined by the outer wall of the chimney and the inner wall of the outer sleeve, a steam inlet connecting pipe and a steam outlet connecting pipe are welded to the shell ring, a condensate outlet connecting pipe is welded to the lower conical section, and the steam inlet connecting pipe, the steam outlet connecting pipe and the condensate outlet connecting pipe are communicated with the annular cavity. The spiral fin plate is wound and welded to the outer wall of the chimney and located in the annular cavity, the lower end opening of the chimney is used for introducing low-temperature flue gas which is treated and reaches the emission standard into the chimney, and the steam inlet connecting pipe is used for introducing high-temperature steam into the annular cavity. The heat exchanger is simple in structure, convenient to disassemble and assemble, safe and reliable in operation, capable of shortening the heat exchange technological process, small in occupied area and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical fields of environmental protection and energy, in particular to a chimney structure that can effectively eliminate white smoke. Background technique [0002] In the workplaces of wet desulfurization, power plants, VOCs waste gas treatment, phosphoric acid production and concentration systems, the low-temperature flue gas that has been treated to meet the emission standards usually produces "white smoke" at the chimney mouth. The main components of "white smoke" are water vapor. The temperature of the flue gas discharged up to the standard is generally about 50 °C, usually in a saturated humidity state. After the saturated wet flue gas is discharged from the chimney, it is rapidly cooled by the lower temperature atmosphere, and the water vapor in the flue gas condenses into a liquid state. As the water vapor diffuses in the atmosphere, the water vapor concentration decreases, the light transmittance increases, and...

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Problems solved by technology

[0003] The disadvantages of the existing whitening technology are that the equipment used is complex in structure, high in cost, long in the heat exchange process, and low in heat exchange efficiency.

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