Compartment turbulent bed desulfurization, denitrification and dust removal device and process thereof

Abstract

The invention relates to the field of desulfurization and denitrification, and particularly provides a compartment turbulent bed desulfurization, denitrification and dust removal device and a process thereof. Compartments are two columns of compartments which are vertically arranged, a public flue is arranged between the two columns of compartments, a compartment inlet baffle door is arranged below the public flue, and a compartment outlet baffle door is arranged above the public flue; two rows of compartments are of a same symmetrical structure, and each compartment sequentially comprises an ash collecting area, a turbulence overflow area, an ammonia spraying area and a dust removing area from bottom to top; and an airflow uniform distribution plate and a baffle plate are arranged on the flue gas outlet side of the compartment inlet baffle door of the public flue, so that flue gas enters the turbulence overflow area. In order to overcome various defects of a flue gas treatment technology in the prior art, the invention provides a dry-type flue gas treatment device and process which integrate desulfurization, denitration and dust removal functions and can adapt to large-range fluctuation of boiler loads.

Description

technical field [0001] The present disclosure relates to the field of desulfurization and denitrification, and specifically provides a desulfurization, denitrification and dedusting device and a process thereof with a compartmental turbulent bed. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Coal-fired power generation boilers, steelmaking and sintering machines, and cement kilns all produce flue gas containing a large amount of pollutants, the main pollutant of which is generally SO x , NOx and dust, etc. If the flue gas is directly discharged into the atmosphere without treatment, it will cause serious pollution to the environment. Therefore, the treatment of the above-mentioned flue gas pollutants has become an extremely important link in the production process of industries such as electric power, steel and building materials. x There are...

AI Technical Summary

Problems solved by technology

[0011] (1) The desulfurization efficiency is greatly affected by the fluctuating flue gas volume. When the actual flue gas volume is greater or less than the designed flue gas volume, the desulfurization efficiency will decrease. Especially when the boiler load is lower than 50% of the BMCR working condition, it will cause the bed of the desulfurization tower to collapse and cause the system to fail to operate normally

[0012](2) The desulfurization efficiency is low, even if the system is running normally, it barely meets the ultra-low requirements of the current national environmental protection standards

[0013] (3) The process route is long, the subsystems are complicated, there are many operating equipment, and there are many fault points, especially the desulfurization ash circulation system is unstable, ash leakage, equipment Jamming occurs frequently, and operation and maintenance costs are high

High initial investment and large floor area

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