Inert gas protection system and method of active carbon adsorption towers

Abstract

The invention discloses an inert gas protection system and a method of active carbon adsorption towers. The inert gas protection system comprises an adsorption tower; the lower part of one side of theadsorption tower is provided with a flue gas inlet, and the upper part of the other side of the adsorption tower is provided with a flue gas outlet; a double blocking plate door is arranged in the flue gas inlet of the adsorption tower; a single blocking plate door is arranged in the flue gas outlet of the adsorption tower; the bottom of the adsorption tower is connected with a first pipeline forinert gas supply; the end terminal of the first pipeline is provided with a first valve; the front end of a second pipeline is connected with the first pipeline; the back end of the second pipeline is communicated with a space between a front blocking plate door and a back blocking plate door of the double blocking plate door; the second pipeline is provided with a second valve; the front end ofa third pipeline is connected with the first pipeline, and the connection part is arranged between the second pipeline and the first valve; the back end of the third pipeline is communicated with a downstream space of the double blocking plate door at the flue gas inlet; the third pipeline is provided with a third valve; a fourth pipeline is communicated with the third pipeline at the downstream of the third valve; and the fourth pipeline is provided with a fourth valve.

Description

Technical field [0001] The present invention relates to an inert gas protection system for an activated carbon adsorption tower in a flue gas purification system of an iron ore sintering machine, and more specifically, to a flue gas purification system including an activated carbon adsorption tower and an activated carbon desorption tower (ie, flue gas adsorption and Analysis system) inert gas protection system, and inert gas protection method of activated carbon adsorption tower. Background technique [0002] The activated carbon method for flue gas treatment technology has a history of more than 50 years of research and application. The early technical research and application are mainly concentrated in Germany, Japan, the United States and other countries. Germany's BF company (now DMT company) began to develop the Reinluft desulfurization technology in 1957, Japan began to study activated carbon desulfurization in the mid-1960s, and Germany's Lurgi company also earlier carrie...

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Problems solved by technology

[0012] However, activated carbon is a flammable substance. During the flue gas purification process, due to the unsmooth feeding of the activated carbon, the material accumulates in the tower, the reaction heat cannot be released in time, or the temperature of the flue gas at the inlet of the adsorption tower is not properly controlled, which may lead to adsorption. The activated carbon in the tower has a high temperature phenomenon, and even burns

[0013] After the adsorption tower is at high temperature, the traditional inert gas protection method is to directly feed nitrogen into the tower, without considering the flow state of the inert gas in the tower and the high temperature prevention measures, the protection effect is not particularly obvious

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