CN-224230736-U - Copper smelting flue gas processing system

Abstract

The utility model relates to the technical field of flue gas treatment equipment, in particular to a copper smelting flue gas treatment system, wherein an air inlet of a waste heat boiler is connected with an air outlet of a smelting furnace, an air outlet of the waste heat boiler is connected with an input end of a high-exhaust fan, an output end of the high-exhaust fan is connected with an air inlet of an electric dust collector, an air outlet of the electric dust collector is connected with an air inlet of a movable tower, an air outlet of the movable tower is connected with an air inlet of a gas cooling tower, an air outlet of the gas cooling tower is connected with an air inlet of a two-movable tower, an air outlet of the two-movable tower is connected with an air inlet of an electric demister, an air outlet of the electric demister is connected with an input end of a sulfur dioxide fan, an output end of the sulfur dioxide fan is connected with an air inlet of a converter, and a pipeline between the output end of the sulfur dioxide fan and the air inlet of the converter is connected with a secondary oxygen distribution pipeline. The system realizes comprehensive and efficient treatment of copper smelting flue gas.

Inventors

• CHEN TAO
• Duan Xiuyun
• LI XIANG
• ZHANG XIAOTIAN
• Pan Keran
• GAO ZHIDA
• ZHAO YUXIN
• JIA YONGYI
• SUI XIANGMING
• LI MIN
• ZHANG LEI
• YU HAO

Assignees

• 赤峰云铜有色金属有限公司

Dates

Publication Date

20260512

Application Date

20250530

Claims (5)

1. 1. A copper smelting flue gas treatment system is characterized by comprising a waste heat boiler (1), a high-exhaust fan (2), an electric dust collector (3), a movable tower (4), an air cooling tower (5), a second movable tower (6), an electric demister (7), a sulfur dioxide fan (8), a secondary oxygen distribution pipeline and a converter (9), wherein the air inlet of the waste heat boiler (1) is connected with the air outlet of a smelting furnace, the air outlet of the waste heat boiler (1) is connected with the input end of the high-exhaust fan (2), the output end of the high-exhaust fan (2) is connected with the air inlet of the electric dust collector (3), the air outlet of the electric dust collector (3) is connected with the air inlet of the first movable tower (4), the air outlet of the first movable tower (4) is connected with the air inlet of the air cooling tower (5), the air outlet of the second movable tower (6) is connected with the air inlet of the electric demister (7), the air outlet of the electric demister (7) is connected with the air inlet of the electric demister, the air outlet of the electric demister (7) is connected with the air inlet of the second movable tower (6), and the air inlet of the second movable tower (8) is connected with the air inlet of the oxygen distributor (9).
2. 2. A copper smelting flue gas treatment system according to claim 1, wherein the high exhaust fan (2) comprises two fans connected in parallel.
3. 3. The copper smelting flue gas treatment system according to claim 1, wherein a sulfur dioxide concentration meter (10) and a first oxygen concentration meter (11) are arranged on a pipeline between the output end of the sulfur dioxide fan (8) and the air inlet of the converter (9), the sulfur dioxide concentration meter (10) and the first oxygen concentration meter (11) are arranged at a position close to the air inlet of the converter (9), and the secondary oxygen distribution pipeline is connected at a position close to the output end of the sulfur dioxide fan.
4. 4. A copper smelting flue gas treatment system according to claim 3, wherein the secondary oxygen distribution pipeline is provided with a second oxygen concentration meter (12), a flow meter (13), a manual valve (14), a regulating valve (15) and a check valve (16).
5. 5. A copper smelting flue gas treatment system according to claim 4, wherein the sulphur dioxide concentration meter (10), the first oxygen concentration meter (11), the second oxygen concentration meter (12), the flow meter (13) and the regulating valve (15) are all connected to a control system.

Description

Copper smelting flue gas processing system Technical Field The utility model relates to the technical field of flue gas treatment equipment, in particular to a copper smelting flue gas treatment system. Background In the copper smelting industry, smelting furnaces produce large amounts of flue gas that is high temperature and contains a variety of pollutants. The flue gas is extremely high in temperature, can reach 1300 ℃ generally, contains abundant waste heat resources, and can cause huge waste of energy sources and increase the production cost of enterprises if the flue gas is not recycled. Meanwhile, a large amount of dust particles are mixed in the flue gas, and the particle sizes of the particles are different, wherein the particles contain heavy metal particles such as copper and raw material dust which is not completely reacted, and if the particles are directly discharged into the atmosphere, serious dust pollution is caused to the surrounding environment, the air quality is influenced, and the human health is endangered. More importantly, the flue gas also contains high-concentration sulfur dioxide gas. Sulfur dioxide is a toxic gas with strong pungent smell, and can be combined with water vapor in the atmosphere to form acid rain, so that serious corrosion and damage are caused to soil, water, vegetation, buildings and the like, and ecological balance and the production and living environment of human beings are seriously influenced. Therefore, the method effectively processes the copper smelting flue gas, realizes waste heat recovery, smoke dust removal and sulfur dioxide conversion, and is a necessary choice for realizing sustainable development and meeting environmental protection requirements in the copper smelting industry. At present, although some flue gas treatment technologies exist, a plurality of defects still exist in practical application. For example, in the waste heat recovery link, the heat exchange efficiency of part of the recovery device is lower, the heat in the flue gas cannot be fully recovered, so that the energy utilization rate is low, in the aspect of smoke dust removal, the collection effect of some dust collection devices on fine particles is poor, the strict environmental protection emission standard is difficult to reach, in the aspect of sulfur dioxide treatment, the traditional conversion process has the problems of low conversion rate, easy deactivation of a catalyst and the like, so that the sulfur dioxide content in the finally discharged flue gas is still high, and the increasingly strict environmental protection regulation requirement cannot be met. Disclosure of utility model Aiming at the problems of poor flue gas treatment effect and low recovery rate of resources in flue gas in the prior art, the utility model provides a copper smelting flue gas treatment system. In order to achieve the above purpose, the technical scheme of the utility model is as follows: The copper smelting flue gas treatment system comprises a waste heat boiler, a high exhaust fan, an electric dust collector, a first movable tower, a gas cooling tower, a second movable tower, an electric demister, a sulfur dioxide fan, a secondary oxygen distribution pipeline and a converter, wherein the air inlet of the waste heat boiler is connected with the air outlet of a smelting furnace, the air outlet of the waste heat boiler is connected with the input end of the high exhaust fan, the output end of the high exhaust fan is connected with the air inlet of the electric dust collector, the air outlet of the electric dust collector is connected with the air inlet of the first movable tower, the air outlet of the first movable tower is connected with the air inlet of the gas cooling tower, the air outlet of the gas cooling tower is connected with the air inlet of the second movable tower, the air outlet of the second movable tower is connected with the air inlet of the electric demister, the air outlet of the electric demister is connected with the input end of the sulfur dioxide fan, the output end of the sulfur dioxide fan is connected with the air inlet of the converter, and the pipeline between the output end of the sulfur dioxide fan and the air inlet of the converter is connected with the secondary oxygen distribution pipeline. Further, the high exhaust fan comprises two fans connected in parallel. Further, a sulfur dioxide concentration meter and a first oxygen concentration meter are arranged on a pipeline between the output end of the sulfur dioxide fan and the air inlet of the converter, the sulfur dioxide concentration meter and the first oxygen concentration meter are arranged at positions close to the air inlet of the converter, and the secondary oxygen distribution pipeline is connected at positions close to the output end of the sulfur dioxide fan. Further, a second oxygen concentration meter, a flowmeter, a manual valve, a regulating valve and a check valve are arranged on the seconda