Flat flow countercurrent composite desulfurization absorption tower

Abstract

The invention relates to a flat flow countercurrent composite desulfurization absorption tower, which comprises a tower body, at least one group of first spray component and at least one group of second spray component. The lower part of the tower body is provided with a slurry tank; the side wall of the tower body is provided with a gas guide pipe corresponding to the slurry tank and used to introduce flue gas; the first spray component includes a first spray layer installed in the tower body and located above the gas guide pipe, and the spray direction of the first spray layer is opposite to the smoke flow direction; and the second a spray component includes a second spray layer, which is vertically mounted in the gas guide pipe and has the back facing the tower body. The introduced flue gas can contact with the liquid in the slurry tank; the absorption tower is conducive to reducing flue gas flow rate, and plays the roles of current stabilization, cooling and improvement of the desulfurization efficiency; in addition, the absorption tower also realizes full contact of the spray liquid with flue gas, ensure the desulfurization efficiency, reduce liquid to gas ratio, and save desulfurization system operation cost and equipment investment.

Description

technical field [0001] The invention relates to an absorption tower, in particular to an advection and countercurrent composite desulfurization absorption tower. Background technique [0002] A coal-fired boiler is a boiler whose fuel is coal-fired. It refers to thermal power equipment that heats heat medium water or other organic heat carriers (such as heat transfer oil, etc.) to a certain temperature (or pressure) after burning coal in the furnace to release heat. . In a coal-fired boiler, the heat of coal is converted to produce steam or hot water, but not all the heat is effectively converted, and some of the heat is consumed reactively, so there is an efficiency problem. Generally, larger boilers have higher efficiency. Some, between 60% and 80%. [0003] When the boiler is running, the temperature of the flue gas at the outlet is sometimes high, the load becomes larger, the flue gas volume is high, the coal type changes, and the sulfur content in the coal is high. Fa...

AI Technical Summary

Problems solved by technology

In coal-fired boilers, the heat of coal is converted to produce steam or hot water, but not all the heat is effectively converted, and some of the heat is consumed reactively, so there is an efficiency problem. Generally, larger boilers have higher efficiency. Some, between 60% and 80%

[0003] When the boiler is running, the outlet flue gas temperature is sometimes high, the load increases, the flue gas volume is high, the coal type changes, the sulfur content in the coal is high, and other factors often cause the flue gas to flow faster, and the flue gas in the tower The residence time in the flue gas is short, and the concentration of sulfur dioxide in the outlet flue gas exceeds the standard emission

Images