Purification system of high dust-laden supersaturated odorous gas and purification method

Abstract

The invention discloses a purification system of a high dust-laden supersaturated odorous gas and a purification method. The purification system provided by the invention is characterized in that the top of a gas collection cover is respectively connected with a first induced draught fan and a flue gas inlet of a drying column through pipelines; a flue gas outlet of the drying column is respectively connected with a second induced draught fan and a flue gas inlet of a demisting and dedusting tower through pipelines; and a gas outlet of the demisting and dedusting tower is respectively connected with a third induced draught fan and a gas inlet of an adsorbing purification tower through pipelines. According to the invention, flue gas waste heat is utilized for the drying and regeneration ofan adsorbent and the flue gas simultaneously is cooled, so as to save energy; the cooled flue gas enters into the demisting and dedusting tower to remove more than 85% of liquid drops and dust as well as part of harmful gases such as NH3, H2S and the like, and then enters into the adsorbing purification tower for purification again so as to remove residual pollutant components such as NH3, H2S, VOC and the like, followed by discharging. With the integration of dedusting, smell removing and moisture desorption, the purification system has a wide range and good effect for purification. In addition, the purification system has characteristics of dust resistance, water resistance and strong adaptability, is not influenced by large range fluctuation of inlet flue gas flow, and is durable.

Description

technical field [0001] The invention belongs to the field of gas purification, and in particular relates to a purification system and purification method for highly dust-containing supersaturated odorous gas. Background technique [0002] Metallurgical and coking enterprises need to cool steel slag or coke when cooling steel slag and coke, especially when using wet coke quenching, a large amount of high dust content and supersaturated odor will be generated, and the flue gas contains NH 3 、H 2 Harmful substances such as S, VOC, etc., currently use wet electrostatic precipitator or plastic burner plate dust collector to remove dust from flue gas, but this method has high investment and operation costs, huge equipment, and is resistant to fluctuating inlet flue gas flow and pollutant content. Poor, and for NH 3 、H 2 The removal effect of harmful gases such as S and VOC and the effect of deodorization and dehumidification are not good. Contents of the invention [0003] T...

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Problems solved by technology

[0002] Metallurgical and coking enterprises need to cool steel slag or coke when cooling steel slag and coke, especially when using wet coke quenching, a large amount of high dust content and supersaturated odor will be generated, and the flue gas contains NH 3 、H 2 Harmful substances such as S, VOC, etc., currently use wet electrostatic precipitator or plastic burner plate dust collector to remove dust from flue gas, but this method has high investment and operation costs, huge equipment, and is resistant to fluctuating inlet flue gas flow and pollutant content. Poor, and for NH 3 、H 2 The removal effect of S, VOC and other harmful gases and the effect of deodorization and dehumidification are not good

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