一种具有预除尘和阻火功能的袋式除尘器
By installing a flame arrester in front of the bag filter and a top-vertical air inlet bag filter, and using baffle impact plates and shrink-shaped louvered baffles for multiple pre-dust removal and spark capture, the problems of spark reignition and unstable dust removal efficiency of traditional electrostatic precipitators are solved. This achieves efficient spark interception and resource recycling, ensuring the safe and stable operation of the dust collector.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOSTEEL TIANCHENG ENVIRONMENTAL PROTECTION SCI&TECH
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional electrostatic precipitators have problems such as the risk of spark reignition, unstable dust removal efficiency, easy equipment damage, high energy consumption and resource waste when treating flue gas from sintering machine heads. Existing spark capture devices are not very effective and are prone to clogging, making it difficult to achieve ultra-low emissions.
A flame arrester and a flame arrestor are added before the bag filter. Pre-dust removal and flame arrest are performed using a baffle plate and a contracting louver baffle. The pre-dust removal and flame arrestor are then performed by the top vertical air inlet bag filter. A bag filter with pre-dust removal and flame arrestor functions is designed. The flame arrestor performs primary pre-dust removal and spark capture, and the top vertical air inlet bag filter performs secondary pre-dust removal and spark capture.
It significantly improves the ability to capture sparks, reduces the risk of filter bags being burned by sparks, extends the life of filter bags, reduces filtration resistance, achieves energy saving and cost reduction and resource recycling, and ensures the safe and stable operation of the dust collector.
Smart Images
Figure CN224506627U_ABST
Abstract
Claims
1. A bag filter with pre-dust removal and flame arrestor functions, comprising an inlet flue (1), a flame arrester (2), a flame arrester ash hopper (3), a top inlet flue (4), a connecting pipe (5), a top vertical inlet bag filter (6), and an outlet flue (7), wherein the top vertical inlet bag filter (6) is equipped with a dust removal device (61), a vertical inlet pipe (62), a shrinkable louvered baffle (63), and an outlet (64), characterized in that... The flame arrester (2) is provided with a flame arrester housing (21); a baffle plate (22) and a suspension device (23) are provided inside the flame arrester housing (21); the suspension device (23) is fixedly connected to the wall panel of the flame arrester housing (21), and the baffle plate (22) is fixedly connected to the suspension device (23); the inlet flue (1) is connected to the inlet of the flame arrester (2); the flame arrester ash hopper (3) is welded to the lower part of the flame arrester (2); the upper part of the flame arrester (2) is welded to the top inlet flue (4); the top inlet flue (4) is connected to the vertical inlet bag filter (6) inside the top vertical inlet bag filter (6) through a connecting pipe (5). The duct (62) is connected; the top vertical air inlet bag filter (6) is coaxially provided with a vertical air inlet duct (62) and a shrinkable louvered baffle (63) in the vertical direction of the top plane position; the vertical air inlet duct (62) and the shrinkable louvered baffle (63) are connected; the exhaust flue (7) is welded to the air outlet (64) of the top vertical air inlet bag filter (6); the flame arrester (2) is integrated with the top vertical air inlet bag filter (6) and is used for primary pre-dust removal and spark capture of dust-laden flue gas; the shrinkable louvered baffle (63) is used for secondary pre-dust removal and spark capture of flue gas.
2. The bag filter with pre-dedusting and fire-retardant function according to claim 1, characterized in that The deflector impact plate (22) is arranged in multiple parallel layers from top to bottom inside the flame arrester housing (21), with equal overlap in the height direction and an overlap ratio of 5% to 40%; the deflector impact plate (22) adopts a metal plate, metal mesh or perforated plate structure.
3. The bag filter with pre-dedusting and fire-retardant function according to claim 1, characterized in that The suspension device (23) is made of metal profiles, and the suspension device (23) and the deflector impact plate (22) are connected by welding, bolting or riveting.
4. The bag filter with pre-dedusting and fire-retardant function according to claim 1, characterized in that The top vertical air inlet bag filter (6) is equipped with a dust removal device (61); the dust removal device (61) adopts pulse jet cleaning, mechanical vibration or sonic cleaning; the pulse jet cleaning device can be arranged in a windmill-like rotation around the vertical air inlet pipe (62), or it can be arranged in a single row or multiple rows in parallel.
5. The bag filter with pre-dedusting and fire-retardant function according to claim 1, characterized in that The top air inlet flue (4) consists of an ascending flue, a bend, and a horizontal straight pipe fitting, and distributes the flue gas evenly to each vertical air inlet pipe (62) of the top vertical air inlet bag filter (6).
6. A bag filter with pre-dust removal and flame-retardant functions according to claim 1, characterized in that: The flame arrester ash hopper (3) adopts a frustum structure.