Circulating fluid bed flue gas desulfurization tower

A circulating fluidized bed and desulfurization tower technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of increasing the resistance of the desulfurization tower, uneven particle flow field distribution, and affecting desulfurization efficiency. The effect of gas-solid mixing intensity, increasing the layout of the feed inlet, and improving the desulfurization efficiency

CN101284207BInactive Publication Date: 2011-08-17NORTHEAST DIANLI UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-08-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technology field of combustion equipment, and discloses a stack gas desulfurization tower of a circulating fluid bed, which is used for smoke gas purification. The stack gas desulfurization tower comprises a purified smoke gas outlet, an atomizing water jet apparatus, recycling ash nozzles, a desulfurizer inlet, and a smoke gas inlet which are arranged on a tower body. The stack gas desulfurization tower is characterized in that functional air nozzles are arranged on the tower body and positioned under recycling ash nozzles; at least a wind-pressure desulfurizer jet apparatus is arranged on the tower body and positioned under the functional air nozzles; a plurality of Venturi nozzles are arranged inside a Venturi throat in the tower body; the wind-pressure desulfurizer jet apparatus has the structure that an air inlet pipe is provided, the desulfurizer inlet is arranged on the air inlet pipe, and a diffuser nozzle is arranged on the head end of the air inlet pipe, wherein, the head end of the air inlet pipe extends into the tower body; the recycling ash nozzles and the functional air nozzles are both a plurality of nozzles. The stack gas desulfurization tower has the advantages of reasonable structure, low investment, low running cost, reliable running, high efficiency, wide application range, etc.
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Description

technical field

[0001] The invention relates to the technical field of combustion equipment, in particular to a circulating fluidized bed flue gas desulfurization tower for flue gas purification. Background technique

[0002] The problem of sulfur dioxide gas pollution caused by combustion has always been the focus of governance in countries all over the world. At present, the limestone / gypsum wet process is mainly used for flue gas desulfurization in foreign and domestic large-scale thermal power plants. Although the wet process is relatively mature and has high desulfurization efficiency, it has complex systems, large investment, large floor area, and high water consumption. Higher running costs etc. The circulating fluidized bed flue gas desulfurization device has the advantages of low investment, low operating cost, and high efficiency. Its application prospect is very broad, and it has been used more and more, and its research has become more and more in-depth. At hom...

Examples

Embodiment Construction

[0021] refer to Figure 1~5 , a circulating fluidized bed flue gas desulfurization tower of the present invention has a straight cylinder 8, a venturi throat cylinder 7 and a conical ash hopper 6 arranged in sequence from top to bottom to form a tower body 14 of an integral structure. On the side wall of the upper end of the straight cylinder 8 of the tower body 14 is provided a purified flue gas outlet 9 . The side wall of the straight cylinder 8 of the tower body 14 is provided with an atomized water injection device 5, and the nozzle of the atomized water injection device adopts a gas-liquid two-phase flow atomizing nozzle, and the atomized water injection device 5 is divided into two parts along the height direction. Three-layer injection, the present invention adopts three-layer structure. Below the atomized water injection device 5, on the side wall of the straight tube 8 of the tower body 14, a recirculation ash nozzle 4 is provided. On the side wall of the straight t...