Reaction tower for stack gas desulfurization of dry type circulating fluid bed

A circulating fluidized bed and reaction tower technology, which is applied in the field of flue gas purification, can solve the problems that the flue gas buffer chamber cannot be very large, affect the stable operation of the equipment, and is easy to block, and achieves compact structure, reduced floor space, and prevention of sticky effect

Active Publication Date: 2006-07-05
TSINGHUA UNIV +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Also, when the large flue gas flow enters the desulfurization reaction tower, the air flow must be uniformly distributed, and a large amount of circulating ash falls from the bottom of the desulfurization tower in the circulating fluidized bed. limit, the flue gas buffer chamber cannot be too large
In addition, in the circulating fluidized bed desulfurization tower, it often occurs that the wet particles reach the tower wall before drying, causing sticking to the wall, which affects the stable operation of the equipment

Method used

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  • Reaction tower for stack gas desulfurization of dry type circulating fluid bed
  • Reaction tower for stack gas desulfurization of dry type circulating fluid bed
  • Reaction tower for stack gas desulfurization of dry type circulating fluid bed

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Embodiment Construction

[0024] see Figure 1 to Figure 6 , the present invention includes a tower body and a flue gas inlet 1 connected to the tower body, a flue gas outlet 5, a water spray inlet 3 and a powder spray inlet 2. The tower body is composed of upper and lower sections, and the two sections are connected by the set Venturi section 7. The middle section of the Venturi section 7 has a blind area 10 built in, and the blind area 10 is fixed by a support rod 11 arranged on the throat wall of the Venturi section 7, and the upper and lower sections of the Venturi section 7 are cones. The lower section of the tower body is a pre-separation chamber 8 that acts as a buffer. The connection between the pre-separation chamber 8 and the flue gas inlet 1 adopts a tangential intake rotatable structure. The bottom of the pre-separation chamber 8 is a conical ash drop port 9 . The upper section of the tower body is a straight section 6, and the lower part of the straight section 6 is connected to the powde...

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Abstract

The invention relates to a dry circulating fluidized bed flue gas desulfurization reaction tower, belonging to the field of flue gas purification technology. Said invention includes tower body and flue gas inlet, flue gas outlet, spraying water inlet and spraying powder outlet which are connected with the tower body. Said tower body is composed of upper and lower two sections which are connected by means of designed Venturi section. The lower section of said tower body is preseparation chamber with buffer action, the connection form of the preseparation chamber and the described flue gas inlet adopts a tangetial gas-feeding turnable type structure, the bottom portion of preseparation chamber is equipped with a conical ash-falling mouth. The upper section of said tower body is a straight barrel section; the lower portion of said straight barrel section is connected with the described spraying powder inlet and spraying water inlet placed over the spraying powder inlet. In the interior of upper portion of said straight barrel section an internal separation member with inertial separation action is mounted, and the described flue gas outlet is placed over the internal separation member and connected with outer wall of said straight barrel section.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular to a dry circulating fluidized bed flue gas desulfurization reaction tower. Background technique [0002] SO emissions from coal combustion 2 As a result of increasingly serious air pollution, circulating fluidized bed flue gas desulfurization devices have been widely used due to their simple structure, small footprint, small resistance, and high utilization rate of desulfurizers, especially dry desulfurization compared with wet The desulfurization method has a low water consumption rate and is especially suitable for use in water-scarce areas. However, at present, large-scale coal-fired power plant units emit a large amount of flue gas, and the load changes greatly, resulting in uneven flow field in the large-diameter desulfurization tower, so that the circulating fluidized bed flue gas desulfurization device is only suitable for the flue gas of small and medium-size...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83
Inventor 赵旭东姚强项光明徐杰英
Owner TSINGHUA UNIV
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