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Method for denitrifying flue gas by using rotary activated carbon denitrator

A denitrification device and activated carbon technology, applied in the field of flue gas denitrification, can solve the problems of not too high denitrification efficiency and poor adsorption capacity

Active Publication Date: 2020-03-27
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the poor adsorption capacity of activated carbon to nitrogen oxides in flue gas, especially nitric oxide, the equipment directly combines activated carbon to denitrify sintering flue gas, boiler flue gas, etc., and the denitrification efficiency is not too high.

Method used

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  • Method for denitrifying flue gas by using rotary activated carbon denitrator

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Embodiment

[0064] In conjunction with each accompanying drawing, the present invention is described in detail:

[0065] A steel pipe with a diameter of DN125 is used to quote the sintering flue gas from the sintering workshop of a steel factory. After measurement, the parameters of the initial flue gas are: flue gas temperature 135-137°C, flue gas velocity 3.6m / s, humidity 0.03%, NO content 178-193mg / m 3 , NO2 content 5-13mg / m 3 , the total content of nitrogen oxides is 191-212mg / m 3 , the oxygen content is 15.2%.

[0066] The flue gas first enters the shell-and-tube heat exchanger a, the heat exchange medium is cold water, the water goes through the shell side, and the flue gas goes through the tube side; after adjusting parameters such as water volume and water temperature, the temperature of the flue gas exiting the heat exchanger a is about 55°C; After the heat exchanger a, there is a sprayer d in the flue gas pipe, and the nozzle of the sprayer d atomizes the hydrogen peroxide, a...

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Abstract

The invention discloses a method for denitrifying flue gas by using a rotary activated carbon denitrator. The method comprises the following steps: (1) reducing the temperature of flue gas; (2) atomizing hydrogen peroxide; (3) treating activated carbon in a denitration body with soluble alkali liquor; (4) putting the treated activated carbon into a denitrator, and reacting alkali liquor and hydrogen peroxide with NO in the flue gas; (5) discharging the denitrated flue gas out of the denitrator from a flue gas outlet; and (6) replacing the denitration body along with the rotation of the rotaryactivated carbon denitrator, and the like. The method has the advantages that activated carbon is used for denitration, the technical prejudice is overcome, the denitration effect is good, and the operation cost is low.

Description

technical field [0001] The invention relates to the technical field of flue gas denitration, in particular to a method for flue gas denitrification by using a rotary activated carbon denitrification device. Background technique [0002] The applicant submitted on December 29, 2018, the name is a rotary activated carbon flue gas desulfurization and denitrification device (public number CN109908698A), which discloses a device that can use activated carbon for flue gas desulfurization and denitrification. The device can be used Desulfurization or denitrification of sintering flue gas in steel mills, desulfurization or denitrification of flue gas from power plant boilers, and other similar flue gas desulfurization or denitrification occasions. The use of the device can overcome the disadvantages of brittleness, insufficient strength and short service life of activated carbon in other known technologies, so that the activated carbon can be used repeatedly. However, due to the po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/56
CPCB01D53/78B01D53/56B01D2251/106B01D2258/0283
Inventor 刘明张菡英张振
Owner SHANDONG NORMAL UNIV
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