Compounded nozzle button type gas-liquid separation device

Abstract

The invention provides a compounded nozzle button type gas-liquid separation device. The device comprises a channel and a closing board, and the closing board closes a lower opening of the channel; multiple circulating holes are formed in the closing board; multiple nozzle buttons for covering the circulating holes are arranged; each nozzle button comprises a cylinder and a top plate, the top plate closes the upper opening of the corresponding cylinder, and multiple evenly distributed grid-shaped holes are formed in the upper portion of each cylinder; blade-shaped rotating stream plates are arranged on the inner side of the lower portion of each cylinder. According to the compounded nozzle button type gas-liquid separation device, a gas-liquid separation mechanism is arranged by combining the impeller type rotational flow plates with the nozzle buttons, the gas-liquid separation mechanism is applied to a double-cycle desulfurizing absorption tower, slurry droplets entrained in smoke are removed through centrifugation and coagulation effects, the smoke evenly enters a secondary circulation after broken apart by the top plate, accordingly the situation that a large amount of primary circulating slurry is blended into secondary circulating slurry is avoided, rapid lowering of the solid-containing content and pH value of the secondary circulating slurry is avoided, meanwhile the desulfurizing efficiency is improved, and the running cost is lowered.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to wet flue gas desulfurization equipment, and in particular to a composite hood-type gas-liquid separation device. Background technique [0002] The "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)" requires the eastern region (Liaoning, Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang, Fujian, Guangdong, Hainan and other 11 provinces and cities) to build new coal-fired power plants. The emission concentration of air pollutants from generating units has basically reached the emission limit of gas turbine units (that is, under the condition of a reference oxygen content of 6%, the emission concentrations of soot, sulfur dioxide, and nitrogen oxides are not higher than 10, 35, and 50 mg / m3 respectively). In principle, newly-built units in the region (8 provinces including Heilongjiang, Jilin, Sh...

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Problems solved by technology

It can achieve the effect of uniform gas-liquid flow field to a certain extent, but the separation effect of the device mentioned in the above-mentioned patent is not ideal, and the flue gas after the first-level spray still carries a large number of slurry droplets into the second-level Spray and be collected to the slurry tank outside the tower, resulting in a rapid decrease in the solid content and pH value of the secondary spray slurry, reducing the desulfurization efficiency of the secondary cycle, and increasing the consumption of absorbent

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