Sulfuric acid aerosol trapping tower as well as anode furnace process flue gas treatment system and method
An aerosol and anode furnace technology is applied in the field of anode furnace process flue gas treatment system and sulfuric acid aerosol capture tower, which can solve the problems of low removal rate and achieve the effect of high degree of automation, easy cleaning and small investment.
Pending Publication Date: 2019-02-01
宋成
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Problems solved by technology
Due to the low removal rate of sulfuric acid aerosol in the desulfurization tower (30-50%), most of the sulfuric acid aerosol will be discharged into the atmosphere from the environmental protection chimney along with the flue gas, and the exhausted flue gas will have a yellow or blue plume
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Embodiment 1
[0072] The crude copper in the anode furnace adopts the oxygen-enriched combustion method, and the 250-300Nm 3 / h 0.08MPa natural gas with 500-600Nm 3 Oxygen (purity above 95%) of 0.3MPa / h burns. The anode furnace oxidizes the blister copper and injects compressed air of 900Nm 3 / h. The flue gas temperature of the anode furnace process is controlled at 1200~1300℃, and the outlet pressure is -50pa~-100pa. The temperature of the anode furnace process flue gas exiting the secondary combustion chamber is controlled at 600-750°C. The temperature of the anode furnace process flue gas exiting the anode furnace waste heat boiler is controlled at 210-230°C. The temperature of the anode furnace process flue gas entering the bag filter is controlled at 180-200 °C. The temperature of the anode furnace process flue gas exiting the bag filter is controlled at 170°C. After the system leaks air, the generated gas volume is 10000Nm 3 / h of anode furnace process flue gas, SO in the anode...
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The invention discloses a sulfuric acid aerosol trapping tower. The sulfuric acid aerosol trapping tower comprises a tower body, a smoke inlet and a sewage draining port are formed in the lower part of the outer wall of the tower body, and a flushing water inlet and a smoke outlet are formed in the upper part of the tower body; and a plurality of sets of cooling tube bundles are arranged in the middle of the tower body, the water inlet end of each set of cooling tube bundles communicates with a cooling water inlet header, the water outlet end of each set of cooling tube bundles communicates with a cooling water outlet header, a flushing water tube is arranged above the multiple sets of cooling tube bundles, the flushing water tube is provided with a plurality of nozzles facing the coolingtube bundles, and the flushing water tube communicates with the flushing water inlet. The invention further discloses an anode furnace process smoke treatment system and method. According to the sulfuric acid aerosol trapping tower, the temperature of smoke when the smoke enters a gas mixed chamber can be reduced and controlled, after the temperature of the smoke is reduced, on one hand, the majority of SO3 is condensed in the trapping tower and is removed, on the other hand, after the smoke enters the gas mixing chamber, a large amount of sulfuric acid aerosol cannot be formed due to the large temperature difference, and favorable conditions are created for wet desulphurization.
Description
technical field [0001] The invention relates to the technical field of limestone / lime-gypsum desulfurization, in particular to a sulfuric acid aerosol collection tower and anode furnace process flue gas treatment system and method. Background technique [0002] Flue gas wet desulfurization technology is the most widely used flue gas desulfurization technology at home and abroad, including limestone / lime-gypsum method, magnesium hydroxide method, sodium hydroxide method, sodium sulfite method, ammonia method, seawater method, etc. Among them, the limestone / lime-gypsum method, as the most mature flue gas desulfurization technology, has been widely used because of its advantages of simple operation, reliable operation, high desulfurization efficiency (>90%), abundant and low-cost desulfurizer sources, etc. The installed capacity accounts for more than 80% of the total capacity of existing industrial desulfurization devices. [0003] Blister copper pyro-refining is an import...
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IPC IPC(8): F27D17/00B01D53/00B01D53/14B01D53/18
CPCB01D53/002B01D53/1481B01D53/18B01D53/185F27D17/004F27D17/008F27D2017/006Y02P10/25
Inventor 宋成周岳珍郑家辉黄文宝
Owner 宋成