Boiler flue gas waste heat recovery device
By designing horizontal and vertical cleaning components in the boiler flue gas waste heat recovery device, the scale inside the heat exchange tubes and connecting pipes is automatically cleaned, solving the problem of difficult scale removal and ensuring stable operation and efficient heat transfer of the device.
WO2026108285A1PCT designated stage Publication Date: 2026-05-28HUANENG YAKESHI POWER GENERATION CO LTD
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HUANENG YAKESHI POWER GENERATION CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-05-28
AI Technical Summary
Technical Problem
In existing boiler flue gas waste heat recovery devices, scale buildup inside the heat exchange tubes is difficult to clean, affecting heat transfer efficiency and potentially causing blockages.
Method used
The design incorporates horizontal and vertical cleaning components, including push rods, lifting rods, and sealing components. These components automatically clean the dirt inside the heat exchange tubes and connecting pipes through mechanical movement, and centrally process the cleaned dirt through the sealing components.
Benefits of technology
It enables timely and automatic removal of dirt inside heat exchange tubes and connecting pipes, maintaining long-term stable operation and efficient heat transfer of the device, and extending the service life of the device.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN2025116411_28052026_PF_FP_ABST
Abstract
A boiler flue gas waste heat recovery device (400), relating to the technical field of boilers, comprising: a mounting unit (100), which comprises a base (101), a heat exchanger (102) and a dust collecting box (103) that are arranged on the base (101), and five groups of heat exchange tubes (104) horizontally arranged in the heat exchanger (102); a cleaning unit (200), which comprises a horizontal cleaning assembly (205) and a vertical cleaning assembly (206), wherein the horizontal cleaning assembly (205) and the vertical cleaning assembly (206) are both engaged with the heat exchange tubes (104); and a collection unit (300), which comprises an inclined plate (301) arranged inside the dust collecting box (103), a dust discharge port (302) arranged at a position close to the bottom on the other side of the dust collecting box (103), and a blocking assembly (303) arranged in the dust collecting box (103) and engaged with the heat exchange tubes (104). The provision of the horizontal cleaning assembly, vertical cleaning assembly, and blocking assembly ensures long-term stable operation of the device, prolongs the service life of the device, and achieves better performance.
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