Sintering flue gas circulation combined desulfurization, dust removal and denitration integrated device and method
A technology for desulfurization, dust removal, and sintering flue gas, applied in chemical instruments and methods, separation methods, and dispersed particle separation, etc., can solve the problems of high investment and operating costs, low flue gas circulation rate, and low denitration catalytic reaction rate, etc. Solve inconsistent service life, overcome the effect of low cycle ratio and save maintenance cost
Pending Publication Date: 2021-02-05
BEIJING ZHTD ENVIRONMENTAL PROTECTION TECH CO LTD
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[0010] The purpose of the present invention is to provide an integrated device and method for sintering flue gas circulation combined with desulfurization, dust removal and denitrification to solve the problems of high investment and operation costs, low flue gas circulation rate, and low denitrification catalytic reaction rate in the current sintering flue gas treatment process.
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[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below, obviously, the described embodiments are only some of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0048] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation, so they cannot be understood as Limitations on the Inven...
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The invention relates to the field of ultralow emission treatment of flue gas in the iron and steel industry, in particular to a sintering flue gas circulation combined desulfurization, dust removal and denitration integrated device and method. The device comprises a desulfurization, dust removal and denitration integrated device arranged on a main flue of the sintering machine and a flue gas circulation system arranged in a circulation flue of the sintering machine, and the desulfurization, dust removal and denitration integrated device comprises a desulfurization system and a dust removal and denitration system. Flue gas on the main flue of the sintering machine is purified and discharged through the desulfurization system and the dust removal and denitration system in sequence. By meansof oxygen-enriched sintering flue gas circulation, the sintering flue gas circulation rate is increased from 20% to 30%, and the defect that the circulation proportion of a traditional sintering machine flue gas circulation technology is low can be overcome; according to the invention, a flue gas circulation, desulfurization, dust removal and denitration integrated technology is adopted, and a series of problems faced by a traditional dust removal and denitration device can be solved.
Description
technical field [0001] The invention belongs to the field of air pollution control, specifically relates to the field of ultra-low emission control of flue gas in the iron and steel industry, and particularly relates to an integrated device and method for sintering flue gas circulation combined with desulfurization, dust removal and denitrification. Background technique [0002] The iron and steel industry is a high-pollution industry. The iron ore sintering process itself produces a large amount of flue gas. In addition, due to the high air leakage rate of domestic sintering machines (over 40%), a considerable part of the air does not pass through the sintering material layer and directly enters the subsequent flue gas treatment. device, so the amount of sintering flue gas is huge. For example, a 360m 2 When the sintering machine is in normal production, the amount of flue gas emitted is as high as 2.16 million cubic meters per hour (m 3 / h) above. In addition to the lar...
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IPC IPC(8): B01D46/02B01D53/50B01D53/86B01D53/90B01D53/56B01D53/34
CPCB01D46/02B01D53/8631B01D53/90B01D53/50B01D53/346
Inventor 呼广辉刘国锋刘晓敏李转丽
Owner BEIJING ZHTD ENVIRONMENTAL PROTECTION TECH CO LTD