转炉一次烟气放散烟囱零能耗脱白装置
By installing components such as baffles and baffle demisters on the primary flue gas venting chimney of the converter, the kinetic energy of the flue gas itself is used for cooling and condensate recovery, which solves the problems of white fog and water waste around the primary flue gas venting chimney of the converter, and achieves zero energy consumption, high efficiency in white fog removal and ultra-low emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WISDRI ENG & RES INC LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies suffer from white fog formation and water waste at the primary flue gas venting chimney of converters, and conventional white fog removal methods are energy-intensive and costly.
The converter adopts a zero-energy whitening device for flue gas venting in the chimney, which includes components such as baffles, baffle demisters, throat spiral finned coolers, cyclones and water collectors. It utilizes the kinetic energy of the flue gas itself for cooling and condensate recovery through pre-dehydration, primary whitening, enhanced cooling and secondary whitening.
It effectively reduces the moisture content of flue gas, reduces white plumes, saves energy, achieves ultra-low emissions, and can recover condensate, reducing particulate matter and gaseous pollutant emissions, thus having good social and economic benefits.
Smart Images
Figure CN224513538U_ABST
Abstract
Claims
1. A zero energy consumption white smoke removal device for a converter primary flue gas stack, characterized in that, It includes a converter primary flue gas venting chimney, flue gas inlet pipe, baffle plate, segmented drainage system, baffle plate demister, throat spiral finned cooler, cyclone separator, water collector, upper spiral finned cooler, ignition device and chimney sealing plate; The converter primary flue gas venting chimney consists of a lower straight pipe section, a narrowing section, a throat, a diffuser section, and an upper straight pipe section connected sequentially from bottom to top; A baffle plate is installed on the inner wall of the flue gas inlet pipe; The baffle plate demister is installed in the lower straight pipe section of the chimney and is higher than the flue gas inlet pipe; The chimney sealing plate is installed at an angle inside the lower end of the chimney, with its lowest point lower than the flue gas inlet pipe, which is connected to the lower part of the chimney. The cyclone separator includes a fixed plate and cyclone blades mounted on the fixed plate. The diameter of the fixed plate is smaller than the diameter of the chimney at its location. One end of the cyclone blades is connected to the fixed plate, and the other end of the cyclone blades is connected to the inner wall of the chimney. The cyclone separator is arranged at the beginning of the upper straight pipe section of the chimney, and the flue gas rises from bottom to top through the gaps between the cyclone blades to generate swirl. The ignition device is installed in the upper straight pipe section of the chimney and located above the hydrocyclone. The water collector is arranged between the hydrocyclone and the ignition device. The water collector includes a porous annular wall and an annular sealing plate connected to the bottom edge of the porous annular wall. The porous annular wall is uniformly provided with holes. The central hole of the annular sealing plate communicates with the central hole of the porous annular wall. The annular sealing plate is connected to the inner wall of the chimney to seal the gap between the bottom edge of the porous annular wall and the inner wall of the chimney. The segmented drainage system includes a first drain outlet, a second drain outlet, a third drain outlet, several drain pipes, and a gas drainer. The first drain outlet is located at the bottom of the flue gas inlet pipe, the second drain outlet is located on the chimney at the lowest point corresponding to the bottom of the chimney sealing plate, and the third drain outlet is located on the chimney at the lowest point corresponding to the bottom of the annular sealing plate of the water collector. The first drain outlet, the second drain outlet, and the third drain outlet are all connected to the gas drainer through drain pipes.
2. The zero-energy whitening device for converter primary flue gas venting chimney as described in claim 1, characterized in that: The water baffle has two sections, which are semi-circular in shape. The two water baffles are staggered and installed on the inner wall of the flue gas inlet pipe. One water baffle is welded to the lower part of the inner wall of the flue gas inlet pipe, and the other water baffle is welded to the upper part of the inner wall of the flue gas inlet pipe.
3. The zero energy consumption white smoke removing device for the converter primary flue emission stack according to claim 1, characterized in that: The folding plate demister includes two sets of support beams arranged in parallel at the top and bottom, and multiple folding plates installed between the two sets of support beams. The two ends of the support beams are connected to the inner wall of the chimney.
4. The zero energy consumption white smoke removing device for the converter primary flue gas emission chimney according to claim 1, characterized in that: The upper spiral finned cooler includes fins spirally wrapped around the outer wall of the upper straight cylindrical body of the chimney; the throat spiral finned cooler includes fins spirally wrapped around the outer wall of the throat of the chimney.