Activated carbon adsorption tower and flue gas purification method

Abstract

The invention provides a double-tower type activated carbon adsorption tower. A left tower and a right tower respectively comprise an activated carbon bed layer part at the lower part, an activated carbon bed layer part at the upper part and a middle transition area between the two parts. The activated carbon adsorption tower further comprises a first gas chamber, a second gas chamber, a third gaschamber and a fourth gas chamber; each activated carbon bed layer part at the lower part comprises a lower first material chamber, a lower second material chamber and a lower third material chamber;each activated carbon bed layer part at the upper part comprises an upper first material chamber, an upper second material chamber and an upper third material chamber; the lower first material chambers and the upper first material chambers are communicated with each other through a row of first discharging channels, the lower second material chambers and the upper second material chambers are communicated with each other through a row or a plurality of rows of second discharging channels, and the lower third material chambers and the upper third material chambers are communicated with each other through a row of discharging channels. The adsorption tower disclosed by the invention can obviously improve smoke treating quality, reduces equipment manufacturing and operating cost and maintaining cost and saves electric energy and thermal energy.

Description

technical field [0001] The invention relates to a double-tower or double-row-type activated carbon adsorption tower, especially an activated carbon flue gas purification device for preventing material blocking, and a method for purifying flue gas, in particular, an activated carbon method flue gas purification device for preventing material blocking. The device belongs to an activated carbon flue gas purification device suitable for air pollution control, and relates to the field of environmental protection. Background technique [0002] For industrial flue gas, especially sintering machine flue gas in the iron and steel industry, it is ideal to use desulfurization and denitrification devices and processes including activated carbon adsorption towers and desorption towers. In the desulfurization and denitrification devices including activated carbon adsorption tower and desorption tower (or regeneration tower), the activated carbon adsorption tower is used for adsorption of ...

AI Technical Summary

Problems solved by technology

In addition, the round roller feeder often fails during the production process, such as: material leakage when the flue gas pressure changes, and the material cannot be controlled when the machine is stopped.

In addition, the number of round roller feeders is large (as long as one fails, the entire large-scale device has to be shut down), the cost is high, and maintenance is difficult, so it has brought certain restrictions on the development of activated carbon technology.

[0013] Secondly, for the feeding rotary valve in the prior art, there are the following problems: For the transportation of fragile particles such as desulfurization and denitrification activated carbon, the use of rotary valves on the one hand ensures the airtightness of the tower body, and on the other hand realizes the material flow. Transport without damage, but if the conveying medium is sheared due to the rotation of the blades during the conveying process of the rotary valve, see attached Figure 11 , will cause an increase in system operating costs

For a large adsorption tower usually with a height of about 20 meters, the failure of the round roller feeder or the rotary valve during the production process will cause huge losses to the continuous operation of the process, because the adsorption tower is filled with several tons of activated carbon , it is quite difficult to manually dismantle and repair or reinstall, and the impact and loss caused by shutdown are unimaginable

Images