Circulating fluidized bed flue gas purification system and integrated connecting device thereof

Abstract

The invention relates to a circulating fluidized bed flue gas purification system and an integrated connecting device thereof, and the integrated connecting device comprises a bag-type dust collectorand a flue; wherein a gas inlet is formed in the top end of the bag-type dust collector, a gas outlet is formed in the bottom end of the bag-type dust collector, the gas inlet is communicated with a gas outlet of a desulfurization reaction tower of the circulating fluidized bed method flue gas purification system, and the gas outlet is communicated with a denitration reaction tower of the circulating fluidized bed method flue gas purification system through a flue; the front end of the flue is communicated with the gas outlet in the vertical direction, so that the overall occupied space of thecirculating fluidized bed method flue gas purification system can be reduced. According to the invention, the overall arrangement possibility of the circulating fluidized bed method flue gas purification system is improved in a limited site space, and the flue gas emission requirement is satisfied.

Description

technical field [0001] The invention relates to the technical field of flue gas equipment, in particular to a circulating fluidized bed flue gas purification system and an integrated connection device thereof. Background technique [0002] The circulating fluidized bed flue gas purification system is composed of desulfurization reaction tower, bag filter, denitrification reaction tower, material circulation system, absorbent preparation and supply system, flue gas system, process water system, fluidization air system and other systems. The main process production equipment and auxiliary facilities are arranged around the desulfurization reaction tower and arranged in a centralized manner according to the process requirements. Among them, the desulfurization reaction tower, bag filter and denitration reaction tower are arranged in sequence. [0003] The outlet flue gas of the desulfurization reaction tower is filtered by the bag filter and enters the denitrification reaction ...

AI Technical Summary

Problems solved by technology

[0005] like figure 1 As shown, in the prior art, a bag filter 01 and a flue 02 are communicated between the desulfurization reaction tower 03 and the denitrification reaction tower 04, and the front end of the flue 02 (the end toward the upstream of the air flow) is connected with the bag filter 01 from the side of the bag filter 01. The wall communicates with the air outlet cavity 011 in the bag filter 01, then turns downwards and heats the flue gas inside to make it reach the temperature of the flue gas required by the denitrification reaction tower 04, and this setting can make the flue 02 in the bag filter Three horizontal sections 021 and two vertical sections 022 are formed between the dust collector 01 and the denitration reaction tower 04, and there is a turning point between two adjacent horizontal sections 021 and vertical sections 022, occupying a relatively small space Big

However, in practical engineering applications, compact factory areas are often encountered, the site is extremely limited, and there is no space for each system to be arranged in sequence, and it is impossible to arrange a complete flue gas purification system

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