烟气脱硫系统
The demister, composed of a swirl group and a baffle plate group, solves the problems of easy clogging and gypsum rain in demisters, and achieves efficient flue gas desulfurization and demisting effects. It has a simple and convenient structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 陕西清水川能源股份有限公司
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-17
AI Technical Summary
In existing flue gas desulfurization systems, demisters are prone to clogging, leading to a decrease in desulfurization efficiency, and gypsum rain still occurs in the flue gas, affecting emission quality.
The demister is composed of a swirl group and a baffle group. The flue gas passes through the swirl group and the baffle group one after the other. The centrifugal force of the blades throws out the slurry, particles and droplets, and they fall into the slurry pool under the action of gravity to avoid clogging. At the same time, the limestone slurry comes into countercurrent contact with the flue gas to absorb sulfur dioxide.
It improves demisting efficiency, reduces the load on the demister, avoids gypsum rain, enhances flue gas desulfurization effect, and has a simple and convenient structure.
Smart Images
Figure CN224506701U_ABST
Abstract
Claims
1. A flue gas desulfurization system characterized by, It includes the original flue (1), the desulfurization absorption tower (2) and the circulating spray unit; The outlet of the original flue (1) is connected to the flue gas inlet (210) of the desulfurization absorption tower (2), and the top of the desulfurization absorption tower (2) is provided with a flue gas outlet (220). The bottom of the desulfurization absorption tower (2) is provided with a slurry tank (310), which is connected to the limestone slurry tank (320) through a slurry pump (311); the slurry tank (310) is also connected to the circulating spray unit. A demister (5) is installed in the upper part of the circulating spray unit inside the desulfurization absorption tower (2). The demister (5) includes a baffle plate group (510) and a swirl group (520) arranged vertically. The swirl group (520) is composed of multiple vertically arranged swirl elements. Each swirl element includes a vertically arranged fixed rod (521), multiple bearings (522) and blades (523) arranged along the axial direction of the fixed rod (521). The inner ring of the bearing (522) is fixedly connected to the outer side of the fixed rod (521), and multiple blades (523) are arranged around the outer circumference of the bearing (522). Multiple swirl elements are connected to the inner wall of the desulfurization absorption tower (2) via support rods (530). The top and bottom of the fixed rod (521) are connected to the support rods (530). The support rods (530) are horizontally arranged inside the desulfurization absorption tower (2).
2. The flue gas desulfurization system according to claim 1, characterized by, The connections between the multiple bearings (522) and the fixed rod (521), and between the multiple bearings (522) and the blade (523) are dynamically sealed.
3. The flue gas desulfurization system according to claim 1, characterized in that, The blades (523) on two adjacent swirl elements are staggered in the horizontal direction.
4. The flue gas desulfurization system of claim 1, wherein The circulating spray unit includes multiple circulating pumps (410), multiple slurry circulating pipes (420), and multiple spray heads (430). One end of the slurry circulating pipe (420) is connected to the interior of the slurry tank (310), and the other end of the slurry circulating pipe (420) extends horizontally into the interior of the upper part of the desulfurization absorption tower (2). The circulating pumps (410) are installed on the slurry circulating pipe (420), and the part of the slurry circulating pipe (420) extending into the interior of the desulfurization absorption tower (2) is connected to multiple spray heads (430).
5. The flue gas desulfurization system of claim 4, wherein, Multiple slurry circulation pipes (420) are arranged at equal intervals from top to bottom inside the desulfurization absorption tower (2).
6. The flue gas desulfurization system according to claim 1, wherein The bottom of the desulfurization absorption tower (2) is also connected to an oxidation unit, which includes an oxidation fan (610), an air supply pipe (620), and an air distribution branch pipe (630). The oxidation blower (610) is installed on the air supply pipe (620). The inlet end of the air supply pipe (620) is located outside the desulfurization absorption tower (2). The outlet end of the air supply pipe (620) extends into the slurry tank (310). The portion of the air supply pipe (620) located inside the slurry tank (310) is connected to multiple air distribution branch pipes (630). Multiple openings (631) are provided on the air distribution branch pipes (630).
7. The flue gas desulphurization system according to any one of claims 1 to 6, characterized in that The bottom of the desulfurization absorption tower (2) is connected with a gypsum preparation unit, the gypsum preparation unit comprises a gypsum slurry pump (710), a hydrocyclone (720), a dewatering machine (730) and a gypsum silo (740) connected in sequence; A belt conveyor (731) is arranged between the dewatering machine (730) and the gypsum silo (740).