Flue gas ultra-low emission system based on wet desulfurization and denitrification technology

Abstract

The invention belongs to the technical field of flue gas treatment, and discloses a flue gas ultra-low emission system based on a wet desulfurization and denitrification technology. The flue gas ultra-low emission system comprises a washing tower and a water pump, the middle upper end of the side wall of the washing tower is connected with a flue gas inlet pipe, the water inlet end of the water pump is connected with a water inlet pipe, and the water outlet end of the water pump is connected with a water outlet pipe; and the end, away from the water pump, of the water outlet pipe penetrates through the washing tower and extends to the upper end of the interior of the washing tower, a spraying disc is installed at the end, located in the washing tower, of the water outlet pipe, and a firstflue gas outlet pipe is connected to the top end of the washing tower. The flue gas treatment system is compact in flow, simple in facility, less in occupied land area, capable of effectively reducingthe cost investment of enterprises, very wide in application prospect and worthy of popularization. The washing tower is used for washing and cooling the flue gas firstly, subsequent absorption treatment is facilitated, then absorption is conducted twice, SO2 and NOx in the flue gas can be effectively treated, the treatment speed is high, and treatment of large-batch flue gas output is met.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a flue gas ultra-low emission system based on wet desulfurization and denitrification technology. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. Currently, In industries such as electric power, iron and steel, metallurgy, and petrochemical industry, there are various treatment methods for SO2 and NOx in flue gas, among which wet desulfurization and denitrification technology is a relatively common method. [0003] However, the current flue gas treatment process based on wet desulfurization and denitrification technolog...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flue gas ultra-low emission system based on wet desulfurization and denitrification technology to solve the problems in the above-mentioned background technology that the flue gas treatment is not compact enough, the input cost is high, it is difficult to treat thoroughly, and the processing speed is slow. In addition, the traditional The problem that the activated carbon adsorption layer is not easy to install and remove in flue gas treatment

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