Temperature triggered handwork furnace coal baking room dust collection desulfurization and denitrification method and device

Abstract

The invention discloses a temperature triggered handwork furnace coal baking room dust collection desulfurization and denitrification method and a system. The method comprises the following steps: firstly, arranging an air atomization nozzle at the outlet of a chimney of a baking room; detecting the temperature inside a furnace in real time by using an intelligent temperature and humidity controlsystem of the handwork furnace coal baking room self; when a detected temperature exceeds a preset temperature threshold, starting spraying, ejecting an atomization spraying liquid into the chimney through the air atomization nozzle, enabling the spraying liquid to be in countercurrent contact with fume inside the chimney, intensifying gas-liquid mixing through turbulent motion of a fluid, adsorbing dust in the fume, and removing SO2 and NOx. By adopting the method, spraying is triggered through temperatures, a flue is adopted as a reactor, relatively sufficient gas-liquid contact is achieved,the desulfurization efficiency is greatly improved, the purpose of desulfurization is achieved, the fume discharge process is also the desulfurization process, the method and the device are simple and effective, no independent desulfurization tower or desulfurization device needs to be constructed, and the problem of fume pollution of handwork furnace coal baking rooms is solved.

Description

technical field [0001] The invention belongs to the technical field of dust removal, desulfurization and denitrification in a coal-fired barn with a hand-burning furnace, and more particularly relates to a method and device for dust removal, desulfurization and denitrification in a coal-fired barn with a hand-burning furnace triggered by temperature. Background technique [0002] The coal-fired hand-fired furnace belongs to the grate layer-fired direct-fired furnace. In the process of tobacco leaf baking in the hand-fired furnace coal-fired barn in my country, the coal-fired hand-fired furnace is generally used to provide heat. Due to the lack of coal in the combustion process Continuity, leading to the intermittent, discontinuous and large instantaneous concentration of smoke and dust generation, resulting in increased difficulty in purification. Therefore, in-depth study of the flue gas generation characteristics and laws of coal-fired hand-fired furnaces has a certain theo...

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Problems solved by technology

[0006] The invention provides a temperature-triggered desulfurization and dust removal method and device for a coal-fired barn in a hand-burning furnace. 2 The concentration change can reflect the SO 2 The concentration changes, while the CO 2 The concentration change trend is positively correlated with the temperature change trend in the furnace. Using the temperature to trigger the spray, the flue is used as a reactor, and the atomized liquid droplets sprayed from the nozzle form a countercurrent flow with the flue gas. At the same time, relying on the atomization with speed The droplets form turbulence, and the turbulent movement between the fluids strengthens the gas-liquid mixing, and the gas-liquid contact is more sufficient, which greatly improves the desulfurization efficiency and achieves the purpose of desulfurization, so that the process of exhausting flue gas is also a desulfurization process. The method and device are simple and effective. It is not necessary to build a desulfurization tower or desulfurization device separately to solve the problem of smoke pollution in the coal-fired barn of the hand-burning furnace

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