浆液进料装置及燃煤电厂烟气脱硫系统
By using a mixture of high-temperature, high-pressure steam and acid in the spray system to clean the scale buildup in the nozzles, and by installing an acid mist collection device at the control valve, the problem of blockage caused by alkaline slurry deposition was solved, thereby improving the operating efficiency and equipment lifespan of the desulfurization system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA FENGYE ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, alkaline slurry deposits on pipe walls and nozzle surfaces to form hard scale, which leads to blockage of pipes and nozzles, reduces desulfurization efficiency, and affects the absorption of sulfur-containing substances in flue gas.
A cleaning device is connected to the spray system to use a mixture of high-temperature and high-pressure steam and acid to chemically remove hard scale. An acid mist collection device is installed at the control valve and the top of the absorption tower to absorb residual acid mist through condensation.
It effectively cleans stubborn scale on nozzles, extends the service life of nozzles and control valves, reduces equipment maintenance frequency and operating costs, and improves the operating efficiency of the desulfurization system.
Smart Images
Figure CN224506739U_ABST
Abstract
Claims
1. A slurry feeding device comprising an absorption tower, a discharge pipe connected to a discharge port at the top of the absorption tower, and a control valve provided on the discharge pipe, characterized in that, It also includes a cleaning device and an acid mist collection device. The cleaning device is connected to the spray system of the absorption tower, and the acid mist collection device is installed in the discharge pipe and located between the control valve and the discharge outlet to absorb residual acid mist. The cleaning device includes an acid tank, an inlet pipe, a steam tank, a steam inlet pipe, and a mixer. The inlet of the inlet pipe is connected to the acid tank, and the outlet is connected to the inlet of the mixer. The inlet of the steam inlet pipe is connected to the steam tank, and the outlet is connected to the inlet of the mixer. The outlet of the mixer is connected to a spraying system.
2. The slurry feed device of claim 1, wherein The mixer is a Venturi mixer.
3. The slurry feed device of claim 1, wherein, The liquid inlet pipe is equipped with a first control valve, and the steam inlet pipe is equipped with a second control valve.
4. The slurry feed device of claim 1, wherein, The spraying system has a circulation pipeline, and the circulation pipeline, the liquid inlet pipe, and the steam inlet pipe are all equipped with check valves.
5. The slurry feed device of claim 1, wherein, The acid mist collection device includes an absorption tube, a condenser tube, and a collection tube. The collection tube is disposed inside the absorption tube and divides the inner cavity of the absorption tube into a condenser chamber and a collection chamber. A mesh is provided at the bottom of the absorption tube. The condenser tube is spirally coiled around the outer wall of the collection tube and is located inside the condenser chamber. An acid mist absorption packing is disposed inside the collection chamber. The absorption tube is connected in series to the discharge pipe.
6. The slurry feed device of claim 5, wherein, It also includes a condensate circulation section. The side wall of the absorption tube has a first clearance opening and a second clearance opening, and the first clearance opening is located above the second clearance opening. The water inlet pipe of the condensate tube passes through the second clearance opening and is connected to the water outlet of the condensate circulation section. The water outlet pipe of the condensate tube passes through the first clearance opening and is connected to the water inlet of the condensate circulation section.
7. The slurry feed device of claim 5, wherein, The inner wall of the absorption tube is provided with an upper limit plate and a lower limit plate, which are located at the discharge end and the feed end of the absorption tube, respectively. The bottom of the collection tube is placed on the lower limit plate, and the upper edge of the collection tube is mounted on the upper limit plate.
8. The slurry feed device of claim 7, wherein, The upper part of the collecting tube is provided with an overlapping part, and the collecting tube is mounted on the upper limit plate through the overlapping part. The lower limit plate is provided with a placement step, and the bottom of the collecting tube is placed on the placement step. The collecting tube, the absorption tube, the upper limit plate and the lower limit plate are sealed to form the condensation chamber.
9. The slurry feed device of claim 5, wherein, The upper inner wall of the collecting tube is provided with several finned baffles, and the baffles are arranged alternately. In the direction away from the inner wall of the collecting tube, the baffles are inclined downward.
10. A flue gas desulfurization system for a coal-fired power plant, characterized by, Includes the slurry feeding device according to any one of claims 1 to 9.