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Wet flue gas desulfurization tower

A technology of wet flue gas desulfurization and flue gas inlet, which is applied in the field of desulfurization towers, can solve the problems of lower flue gas lift height, gypsum rain, and low exhaust temperature, so as to reduce water consumption, reduce construction cost, and increase heat transfer area effect

Pending Publication Date: 2019-07-23
CEEC HUNAN ELECTRIC POWER DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after wet desulfurization, the temperature of exhaust gas after desulfurization will inevitably be too low, the height of flue gas lift will be reduced, and problems such as "gypsum rain" will occur.

Method used

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  • Wet flue gas desulfurization tower
  • Wet flue gas desulfurization tower
  • Wet flue gas desulfurization tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] refer to figure 1 , this embodiment includes a tower body, and the tower body is sequentially provided with a desulfurization slurry pool 1, a tray 2, a slurry spray layer 3, a common demister 4, and a heating demister from bottom to top. The heating demister includes flue gas Inlet header 5, inlet main pipe 6, heat dissipation pipe 7, heat sink 8, outlet main pipe 9, connecting flue 10, demister flushing pipe 11, flue gas inlet header 5 leads to multiple inlet main pipes 6, smoke The gas inlet header 5 communicates with the inlet main pipe 6, refer to figure 2 , two groups of heat dissipation pipes 7 are led obliquely below each inlet main pipe 6 to form a triangular arrangement of sub-units. The inlet main pipe 6 communicates with the heat dissipation pipe 7; the end of the heat dissipation pipe 7 is connected with the outl...

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Abstract

The invention discloses a wet flue gas desulfurization tower which comprises a tower body, wherein a desulfurization slurry tank, a tray, a slurry spray layer and an ordinary demister are sequentiallyarranged in the tower body from bottom to top; a heating type demister is further arranged above the ordinary demister; the heating type demister comprises a flue gas inlet collection box, an inlet mother tube, a radiating tube, a cooling fin, an outlet mother tube and a connection chimney flue; the flue gas inlet collection box is communicated with the inlet mother tube, the inlet mother tube iscommunicated with the radiating tube, the radiating tube is communicated with the outlet mother tube, the cooling fin is arranged on the radiating tube, and the outlet mother tube is communicated with a lower space of the tray in the tower body through the connection chimney flue. The wet flue gas desulfurization tower disclosed by the invention can reduce possibility of gypsum rain and colored smoke plume (white smoke emission) from source.

Description

technical field [0001] The invention relates to a desulfurization tower, in particular to a wet flue gas desulfurization tower. Background technique [0002] More than 90% of power plants in my country use limestone-gypsum wet desulfurization technology for desulfurization. However, after wet desulfurization, the temperature of exhaust gas after desulfurization will inevitably be too low, the lift height of flue gas will be reduced, and problems such as "gypsum rain" will occur. [0003] CN 107875819 A discloses a wet flue gas desulfurization tower, which includes a tower body. The tower body is provided with a slurry pool, a spray layer and a demister in sequence from bottom to top. The air outlet, the spray layer includes a partition, a primary spray cylinder, a secondary spray cylinder located in the primary spray cylinder and a tertiary spray cylinder located in the secondary spray cylinder, the primary spray The flue gas sprayed in the cavity enters the secondary spra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/48
CPCB01D53/78B01D53/48
Inventor 易超王新胡署根李学军
Owner CEEC HUNAN ELECTRIC POWER DESIGN INST
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