All-time interval rotary spray drying waste incineration flue gas purification device

Abstract

The invention discloses an all-time interval rotary spray drying waste incineration flue gas purification device, which comprises a lime slurry preparation system, an absorption tower and a bag-type dust collector, wherein the top part of the absorption tower is provided with a rotary sprayer; the lime slurry preparation system is connected with the rotary sprayer; the top part of the absorption tower is also connected with a flue gas inlet pipeline; the lower part of the absorption tower is connected with the bag-type dust collector through a connecting flue; a spray cooling system and a lime powder injection system are also arranged; the spray cooling system comprises a water storage tank; the water storage tank is connected with a water pump through a pipeline; the water pump is connected with a fixed shower nozzle at the upper part of the interior of the absorption tower through the pipeline; the lime powder injection system comprises a lime powder bin; the lime powder bin is connected with the powder inlet of a pipeline injector through the pipeline; the gas inlet of the pipeline injector is connected with a lime powder injection fan; the delivery outlet of the pipeline injector is connected with a lime powder shower nozzle in the connecting flue between the absorption tower and the bag-type dust collector through the pipeline; and the outlet of the lime powder is also provided with a discharge valve.

Description

Technical field: [0001] The invention relates to the field of flue gas purification of urban domestic garbage incineration, in particular to a full-time rotary spray drying garbage incineration flue gas purification device. Background technique: [0002] Waste incineration power generation, as a harmless, reduced and resourceful solid waste treatment method, has begun to be widely used in countries all over the world. However, when the garbage is burned, it will produce a lot of harmful substances, especially the acid gas, such as SO 2 And HCl, if not effectively purified, will cause serious pollution to the environment. Therefore, the research on the purification method of waste incineration flue gas has become an important topic in the research of environmental protection. [0003] At present, most of the waste incineration purification technology adopts the rotary spray drying process, which has a simple process, less equipment, no need for secondary treatment of deacid...

AI Technical Summary

Problems solved by technology

Although this rotary spray drying waste incineration flue gas purification device has many advantages, it cannot spray lime slurry at low temperature stages such as boiler start-up and shutdown, resulting in direct emission of flue gas and polluting the environment.

Moreover, the rotary sprayer needs regular maintenance. Although the maintenance time is short, the acid pollutants will be discharged directly at this time, and the high-temperature flue gas will directly enter the bag filter, which will easily cause damage to the anti-corrosion layer of the bag filter.

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