A flue gas pollutant spraying-absorbing column inner member capable of adjusting a local fluidized wind speed

Abstract

A flue gas pollutant spraying-absorbing column inner member capable of adjusting a local fluidized wind speed is provided and belongs to the technical field of flue gas pollutant control. The inner member includes a fluidization unit group, fluidized wind speed adjusting plates and adjusting plate control devices. The fluidization unit group consists of a plurality of local fluidization units and is mounted below a spraying layer of a spraying-absorbing column. The fluidized wind speed adjusting plates are horizontally mounted under the fluidization unit group and are porous plates. Each fluidized wind speed adjusting plate is connected to one of the adjusting plate control devices. The opening ratio of the fluidization unit group is adjusted through the fluidized wind speed adjusting plates and the adjusting plate control devices to adapt to different boiler running loads. The inner member can form gas-liquid fluidizing and mixing zones having a certain height in the local fluidization units to allow flue gas to be in full contact with slurry, thus strengthening a mass transfer process and playing a role of deep pollutant removal. The inner member can achieve efficient flue gas purification and can increase adaptability of the spraying-absorbing column to load changes.

Description

Technical field [0001] The invention relates to an internal component of a flue gas pollutant spray absorption tower capable of adjusting local fluidization wind speed, and belongs to the technical field of coal-fired flue gas pollutant control. Background technique [0002] In my country, the coal-based energy structure will not change in the short term. The emissions from coal combustion include NOx, SOx, and particulate matter, which brings serious environmental pollution problems. The flue gas pollutant spray absorption technology is the most widely used and most mature environmental protection technology in the world, which can be used in various coal-burning devices. [0003] At present, the flue gas pollutant spray absorption tower usually adopts a single-directional flue gas inlet, and the flue gas flow rate is high, and the space inside the tower is large. After the flue gas enters the absorption tower through the flue gas inlet, it is close to the smoke due to the inertia...

AI Technical Summary

Problems solved by technology

However, due to the large horizontal section of the tray, the multiphase flow composed of slurry and air flow is not restricted in the horizontal direction, and it is difficult to form a fluidized state with good local mass transfer, which also affects the desulfurization effect of this technology.

At the same time, when using this technology, since the porosity of the tray is fixed, the operator cannot actively adjust according to the change of the boiler load, and the pollutant removal effect is greatly affected at low load, making it difficult to adapt to the frequent load changes of the unit

Images