Flue gas desulfurizing device

Abstract

The invention discloses a flue gas desulfurizing device, belongs to the field of non-ferrous metal production, and particularly relates to the field of sulfur-containing waste gas treatment in copper production. Aiming at the problem that the conventional desulfuration method cannot deal with the greater flue gas fluctuation of sulfur-containing flue gas, the invention provides the device which is more suitable for flue gas fluctuation performance and can effectively perform desulfuration. The flue gas desulfurizing device comprises a sulphuric acid tail gas absorption tower, a flue gas absorption tower, a medicine adding part and a separating part, wherein the liquid outlet in the bottom of the sulphuric acid tail gas absorption tower is externally connected with a clean liquid tank; the outlet of the clean liquid tank is communicated with a pipeline reactor; a medicine adding device is arranged at the inlet of the reactor; the outlet of the pipeline reactor is externally connected with a power reactor and a solid-liquid separator which are connected in series; the solid outlet of the solid-liquid separator is externally connected with filter pressing equipment; the liquid outlet of the solid-liquid separator is externally connected with the spray pump inlet of the flue gas absorption tower; the spray pump outlet attached to the flue gas absorption tower is further connected with the spray pump inlet attached to the sulphuric acid tail gas absorption tower; the flue gas absorption tower is communicated with the clean liquid tank. Through the adoption of the device, desulfurized products are easy to treat, and the flue gas desulfurizing device is has a higher property suitable for flue gas fluctuation.

Description

technical field [0001] The invention belongs to the field of nonferrous metal production, in particular to the field of sulfur-containing waste gas treatment in copper production. Background technique [0002] In the copper smelting process, the smelting system adopts flash smelting, PS converter blowing, and anode furnace refining processes. In order to reduce the overflow of SO in the smelting process 2 The impact of flue gas on the environment, with an environmental smoke collection system, a higher concentration of SO 2 The flue gas is discharged after being desulfurized by the dynamic wave desulfurization system, and the lower concentration of SO 2 The flue gas is directly discharged into the chimney at high altitude. With the increasingly stringent environmental protection requirements, the flue gas directly discharged from the high-altitude chimney will not meet the emission standards and must be desulfurized. The flue gas produced has the following characteristics...

AI Technical Summary

Problems solved by technology

At present, the commonly used desulfurization methods include activated coke method, ammonia method, new catalytic method, magnesium method, sodium method, etc. These methods have more or less high energy consumption, high operating costs, high flue gas conditions, large system operation resistance, and exhaust gas requirements. High, by-products are difficult to handle and other shortcomings, can not handle the generated flue gas well

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