Industrial exhaust gas desulfurizer

Abstract

The invention discloses an industrial exhaust gas desulfurizer. The device comprises a desulfurizing tower, a phosphoric ore pulp circulating tank, a washing tower, a setting tank and a clear liquid tank, wherein an inlet of the desulfurizing tower is provided with an induced draft fan, a spraying system of the desulfurizing tower is connected with the phosphoric ore pulp circulating tank through a phosphoric ore pulp circulating pump, and the bottom of the desulfurizing tower is provided with an outlet which is communicated with the phosphoric ore pulp circulating tank; an outlet of the top of the desulfurizing tower is communicated with the washing tower by a pipeline, the spraying system of the washing tower is connected with the clear liquid tank through a washing tower circulating pump, the bottom of the washing tower is provided with an outlet which is communicated with the setting tank, an outlet of the bottom of the setting tank is communicated with the phosphoric ore pulp circulating tank through a slush pump, and a clear liquid outlet of the setting tank is connected with the clear liquid tank. The sulfuric acid tail gas which is subjected to desulfurization by the device contains dioxo sulphur content being smaller than 100ppm, and can meet the new standard in China. In addition, due to the adoption of the device, the three wastes can not be generated in the whole process, a sulphur resource is fully utilized, a phosphorus resource is not damaged, and the part industrial wastewater is also consumed.

Description

technical field [0001] The invention relates to sulfur oxides, in particular to a device for reducing sulfur dioxide in industrial tail gas. Background technique [0002] Thermal power plants, sulfuric acid plants, smelters and other production enterprises, because the raw materials used in production contain sulfur elements, sulfur-containing raw materials will produce sulfur dioxide during the production process, sulfur dioxide not only seriously pollutes the atmosphere and the environment, but also causes great losses to human beings. hinder the sustainable development of human society. The previous national emission standard for sulfur dioxide was ≤420ppm. Now, the new national emission standard is ≤140ppm. The new regulation will be implemented on October 1, 2013. Therefore, the designs in the existing technology are all designed according to the original national standard. , exhaust emissions cannot meet the new national standards, in view of this, the inventor provid...

AI Technical Summary

Problems solved by technology

[0002] Thermal power plants, sulfuric acid plants, smelters and other production enterprises, because the raw materials used in production contain sulfur elements, sulfur-containing raw materials will produce sulfur dioxide during the production process, sulfur dioxide not only seriously pollutes the atmosphere and the environment, but also causes great losses to human beings. hinder the sustainable development of human society

The previous national emission standard for sulfur dioxide was ≤420ppm. Now, the new national emission standard is ≤140ppm. The new regulation will be implemented on October 1, 2013. Therefore, the designs in the existing technology are all designed according to the original national standard. , exhaust emissions cannot meet the new national standards, in view of this, the inventor provides an industrial exhaust device that can meet the new emission standards

Images