Purification device for converter gas after primary electric precipitation and purification method thereof

Abstract

The invention discloses a purification device for converter gas after primary electric precipitation and a purification method of the purification device. The purification device comprises a water washing cooling tower, and an efficient water washing spraying layer assembly and a condensation spraying assembly which are arranged in the water washing cooling tower from bottom to top. By adopting the dedusting, demisting and white smoke eliminating integrated device, ultralow emission of dust and fog drops is realized, meanwhile, when coal gas is diffused and discharged, 'wet smoke rain 'can be fully eliminated, the system is small in occupied area and low in operation cost, coal gas is cooled by direct water spraying, and compared with a traditional pipe (plate) type heat exchanger indirect heat exchange cooling technology, the cooling amplitude is large, and the cooling effect is good. The cyclone coupling technology is adopted for gas ultra-clean dust removal and demisting, and compared with a traditional wet electricity technology, the dust removal and demisting efficiency is high, system operation is stable, and adaptability to converter gas load and dust concentration fluctuation is high.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to a purification device and a purification method thereof used for primary electric dust removal of converter gas. Background technique [0002] The converter gas enters the gas cooler after passing through a primary electrostatic precipitator. A cooling spray gun is arranged inside the gas cooler. The spray gun is sprayed with circulating cooling water, which reduces the gas outlet temperature. and release requirements. [0003] The current gas cooler has a simple structure, single function, low dust removal and mist removal efficiency, and the dust removal efficiency is less than 50%. After long-term operation, it is difficult to ensure the gas The medium dust is discharged stably up to the standard. After the converter gas is cooled by spraying water from the gas cooler, the exhaust gas temperature is high and the saturated humidity is high. When entering the gas tank...

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Problems solved by technology

[0003]The current gas cooler has simple structure and single function, low efficiency of dust removal and mist removal, and dust removal efficiency is less than 50%. It is difficult to ensure that the dust in the gas is discharged up to the standard due to the problem of lowering and lowering the dust content of the washing water. In atmospheric conditions, it is easy to produce "white mist and rain". When the gas enters the gas cabinet through the recovery side, it is necessary to install fine dust removal and mist removal equipment. The system is complicated, the investment cost is high, and the operation cost is high.

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