一种酸性气体激冷塔装置
By combining dry and wet cooling in the acid gas quench tower device, the problems of ammonium sulfate decomposition and increased oxygen content in high-temperature flue gas treatment are solved, achieving efficient cooling and equipment corrosion prevention, and improving environmental compliance and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ASIA PACIFIC ENVIRONMENTAL CORP
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional ammonia-based desulfurization technology, ammonium sulfate solution is prone to decomposition when treating high-temperature flue gas, leading to ammonia escape and the generation of acidic aerosols. Furthermore, cooling the mixed gas increases the oxygen content, resulting in equipment corrosion and increased environmental compliance costs.
An acid gas quench tower device is used. The clean flue gas and high-temperature flue gas are mixed and dried in the forward spray cooling pipe, and then the gas enters the spray layer for wet cooling. High temperature and corrosion resistant materials are used to avoid thermal stress damage caused by liquid phase contact, and the oxygen content is controlled by diluting the clean flue gas.
It effectively avoids high-temperature decomposition of ammonium sulfate solution, reduces ammonia escape and acidic aerosol generation, controls oxygen content, improves equipment corrosion resistance and environmental compliance, and reduces operating costs.
Smart Images
Figure CN224517470U_ABST
Abstract
Claims
1. An acid gas quench tower device, comprising a tower body (14), a forward-spray cooling pipe (11) disposed at the upper end of the tower body (14), an acid hot flue gas inlet pipe (5) disposed on the side wall of the forward-spray cooling pipe (11), and a flue gas outlet pipe (12) disposed at the upper part of the side wall of the tower body (14); characterized in that: A fire sprinkler layer (3) is provided inside the forward spray cooling pipe (11) and above the forward spray cooling pipe (11). The upper end of the forward spray cooling pipe (11) is connected to a return cold flue gas inlet pipe (2) with a diameter smaller than that of the forward spray cooling pipe (11). A hot flue gas inlet ring pipe (10) connected to the acidic hot flue gas inlet pipe (5) is provided inside the forward spray cooling pipe (11). The hot flue gas inlet ring pipe (10) is circular, and several nozzles (15) are evenly distributed on its inner ring wall. The forward spray cooling pipe (11) extends downward into the tower body (14) and is lower than the flue gas discharge pipe (12). A flared part (6) in the shape of a trumpet is provided at the lower end of the forward spray cooling pipe (11). A first spray layer (7) and a second spray layer (8) are arranged from top to bottom below the flared part (6) inside the tower body (14).
2. The acid gas quench tower apparatus of claim 1, wherein: The nozzle (15) sprays out in a downward direction.
3. The acid gas quench tower apparatus of any one of claims 1-2, wherein: The forward spray cooling pipe (11) is made of fiberglass, steel-lined flakes or carbon steel 2507 composite plate.
4. The acid gas quench tower apparatus of any one of claims 1 to 2, wherein: The forward spray cooling pipe (11) uses clean flue gas recirculation instead of air mixing, which can reduce the increase in oxygen content and reduce the cost and processing difficulty when the actual oxygen content in the flue gas differs too much from the reference oxygen content.
5. The acid gas quench tower apparatus of claim 2, wherein: The acidic gas in the acidic hot flue gas inlet pipe (5) is injected into the co-jet cooling pipe (11) at high speed radially and slightly downward angle through the annularly distributed multi-nozzle (15) design, and is then cooled dry by the desulfurized clean flue gas that enters through the nozzle (15).
6. The acid gas quench tower apparatus of any one of claims 1 to 2, wherein: The internal spiral guide plate (17) is installed inside the forward spray cooling pipe (11) to increase the heat exchange area and enhance mixing.
7. The acid gas quench tower apparatus of any one of claims 1 to 2, wherein: The mixed flue gas in the forward spray cooling pipe (11) is dried and cooled before entering the first spray layer (7) and the second spray layer (8) in the tower to spray and wet cool the mixed flue gas, so as to avoid the ammonium sulfate solution from decomposing when it encounters high temperature, resulting in ammonia escape and the generation of aerosols.
8. The acid gas quench tower apparatus of any one of claims 1 to 2, wherein: The tower body (14) has a parallel reverse spray layer (16) around the flared part (6) that sprays upwards. The reverse spray layer (16) is used to replenish the oxidizing liquid and prevent material from sticking in the upper space of the quench tower.
9. The acid gas quench tower apparatus of any one of claims 1 to 2, wherein: The tower body (14) is made of fiberglass, steel-lined flakes or carbon steel 2507 composite plate.