Treatment device of electrolyte high-temperature flue gas
A technology for high-temperature flue gas and treatment devices, which is applied in gas treatment, combined devices, combustion methods, etc., and can solve problems such as easy clogging of pipes and equipment, serious equipment corrosion, and difficulty in electrolyte filtration.
Inactive Publication Date: 2019-12-13
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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Problems solved by technology
The main disadvantages of this flue gas collection: the electrolyte enters the solution, contains fluoride, and severely corrodes the equipment, the circulating fluid is easy to block the pipes and equipment, the electrolyte is difficult to filter, and it needs to be dried
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[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings, as figure 1 Shown is a schematic structural diagram of a treatment device for electrolyte high-temperature flue gas provided by an embodiment of the present invention. The device includes a liquid collection tank, a high-temperature surface cooler, a high-temperature denitration pipeline, a secondary combustion chamber...
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Abstract
The invention discloses a treatment device of an electrolyte high-temperature flue gas. The device comprises a liquid collection tank, a high-temperature surface air cooler, a high-temperature denitration pipeline, a secondary combustion chamber, a cyclone dust collector, a medium-temperature denitration tower, a secondary surface air cooler, a high-temperature cloth bag dust collector, a draft fan and a packed tower, wherein an electrolyte high-temperature flue gas to be treated is treated through the liquid collection tank, the high-temperature surface air cooler, the high-temperature denitration pipeline, the secondary combustion chamber, the cyclone dust collector, the medium-temperature denitration tower, the secondary surface air cooler, the high-temperature cloth bag dust collectorand the packed tower and is subjected to up-to-standard emission. By adopting the device, the flue gas can be effectively cooled, nitric oxide s in the flue gas can be eliminated while electrolyte isrecycled, and the problems that equipment and pipelines are corroded and blocked by solutions in a wet-method treatment process can be avoided.
Description
technical field [0001] The invention relates to the technical field of pyrometallurgy, in particular to a treatment device for electrolyte high-temperature flue gas. Background technique [0002] About 400,000 tons of waste electrolytic aluminum cathodes are discharged in my country every year. Waste aluminum cathode contains NaF, AlF 3 、Al 2 o 3 、Na 2 CO 3 , NaCN, etc. Among them, containing 20% to 40% of fluoride and 100ppm of cyanide, according to the "National List of Hazardous Wastes", they are hazardous wastes. At present, there is no feasible harmless disposal technology for spent cathodes in China. The vast majority of enterprises use landfill or storage for disposal, but due to the solubility and high corrosiveness of fluoride, in order to prevent secondary pollution, the disposal cost is very high; some enterprises also adopt the method of burning, but fluoride is easy to cause secondary pollution. secondary pollution, it is difficult to meet the requireme...
Claims
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IPC IPC(8): B01D50/00B01D53/00B01D53/50B01D53/56B01D53/75B01D53/94F23G7/06
CPCB01D53/002B01D53/75B01D53/9409B01D53/56B01D53/502F23G7/06B01D2258/0283B01D2251/2067B01D2258/025B01D50/20
Inventor 黄海辉孙留根袁朝新常耀超靳冉公徐晓辉王为振高崇
Owner BEIJING MINING & METALLURGICAL TECH GRP CO LTD