一种燃煤火电厂湿法脱硫后烟气提水装置
By installing flue gas water lifting pipes and atomizing nozzles in the desulfurization unit, the condensation and recycling of flue gas moisture are realized, solving the problems of water waste and visual pollution after wet desulfurization, and improving the water resource utilization efficiency and flue gas purification effect of coal-fired power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWER ENG TECH INST INNER MONGOLIA ENERGY POWER GENERATION INVESTMENT
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-17
AI Technical Summary
Existing wet flue gas desulfurization devices, after eliminating the gas-to-gas heat exchanger, reduce the flue gas temperature to around 60°C, resulting in wet saturation emissions, wasting water and causing visual pollution, and failing to effectively utilize the water resources in the flue gas.
A flue gas water lifting pipe is installed between the desulfurization absorption tower and the chimney. Cooling water is sprayed out by atomizing nozzles and flows counter-currently with the flue gas to reduce the flue gas temperature and cause water vapor to condense. The condensate is collected by the water collection pipe and recycled. Combined with baffles and water storage plates, the moisture in the flue gas is further treated.
It effectively removes moisture from flue gas, reduces water consumption, lowers white smoke pollution, and provides recyclable condensate for other uses in the power plant, while also reducing sulfur dioxide and particulate matter content.
Smart Images
Figure CN224506697U_ABST
Abstract
Claims
1. A device for extracting water from flue gas after wet desulfurization in a coal-fired power plant, characterized in that, The system includes a flue gas water lifting pipe installed on the flue between the desulfurization absorption tower and the chimney. The flue gas water lifting pipe has an atomizing nozzle installed on its side wall. The atomizing nozzle is connected to a water tank. A water collection pipe is also installed on the flue. The water collection pipe is located downstream of the flue gas water lifting pipe. A water storage tank is installed at the end of the water collection pipe away from the flue. The water storage tank and the water tank are connected to each other. The water storage tank is also connected to a water processor.
2. A device for extracting water from flue gas after wet desulphurization in a coal-fired thermal power plant according to claim 1, characterized in that, The cross-sectional area of the flue gas lift pipe is larger than that of the flue.
3. A device for extracting water from flue gas after wet desulphurization in a coal-fired thermal power plant according to claim 2, characterized in that, The atomizing nozzles are evenly distributed in groups on the side wall of the flue gas lifting pipe, with each group of atomizing nozzles arranged in rows at intervals.
4. The device for extracting water from flue gas after wet desulfurization in a coal-fired power plant according to claim 3, characterized in that, The flue gas lifting pipe is a square tube. The atomizing nozzle group at the bottom of the flue gas lifting pipe and the atomizing nozzle group at the top of the flue gas lifting pipe are arranged alternately from left to right. The atomizing nozzle group at the bottom of the flue gas lifting pipe and the atomizing nozzle groups on both sides of the flue gas lifting pipe are arranged alternately from front to back.
5. A device for extracting water from flue gas after wet desulphurization in a coal-fired thermal power plant according to claim 4, characterized in that, The water collection pipe is installed between the desulfurization absorption tower and the flue gas water lifting pipe. A baffle is also installed in the flue. The baffle is installed at an angle in the flue and is located above the water collection pipe. The top of the baffle is spaced apart from the top of the flue.
6. A device for extracting water from flue gas after wet desulphurization in a coal-fired thermal power plant according to claim 5, characterized in that, A water storage plate is also installed inside the flue. The water storage plate is located between the flue gas water lifting pipe and the chimney. The water storage plate is provided with ventilation slots. The ventilation slots are vertically arranged and filled with water-retaining scouring pads.
7. A device for extracting water from flue gas after wet desulphurization in a coal-fired thermal power plant according to claim 6, characterized in that, The bottom sidewall of the ventilation slot is inclined downwards.