Flue gas heat exchanger and desulfurization tower waste heat utilization system

By setting a spoiler ring on the inner wall of the heat exchange chamber of the flue gas heat exchanger and designing the heat exchange tube into a spiral shape, the problem of poor heat exchange effect of the existing flue gas heat exchanger is solved, the contact efficiency between the flue gas and the heat exchange tube is improved, and energy consumption and alkali liquid consumption are reduced.

CN222634606UActive Publication Date: 2025-03-18HUBEI RONGCHENG RENEWABLE TECH CO LTD
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Patent Information

Application Number
CN202421229201.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-31
Publication Date
2025-03-18
Estimated Expiration
2034-05-31

AI Technical Summary

Technical Problem

The heat exchange effect of existing flue gas heat exchangers is poor, resulting in high operating temperature of flue gas in the desulfurization tower, increasing the amount of alkali liquid, shortening the equipment life, and increasing the heating energy consumption of desalinated water in the deaerator.

Method used

A flue gas heat exchanger is designed, including a shell, a partition and a spiral heat exchange tube. The inner wall of the heat exchange cavity is equipped with a spoiler ring. Through the spoiler ring and a spiral heat exchange tube structure, the contact efficiency between the flue gas and the heat exchange tube is improved.

Benefits of technology

Through the spoiler ring and spiral heat exchange tube structure, the flue gas heat exchange efficiency is improved, the operating temperature of the desulfurization tower and the amount of alkali liquid are reduced, and the heating energy consumption of the deaerator is reduced.

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Abstract

The utility model discloses a flue gas heat exchanger and desulfurization tower waste heat utilization system, the flue gas heat exchanger comprises a shell, two clapboards and a plurality of heat exchange tubes, the two ends of the shell are open, the two clapboards are both arranged in the shell and are distributed in the shell at intervals, the two clapboards divide the middle part in the shell into a heat exchange cavity, and the heat exchange tubes are arranged in the shell. Openings in the two ends of the shell form a refrigerant inlet and a refrigerant outlet respectively, a heating medium inlet and a heating medium outlet which are communicated with the two ends of the heat exchange cavity are formed in the side wall of the shell, the heat exchange pipes are arranged in the heat exchange cavity, the two ends of each heat exchange pipe penetrate through the two partition plates, and a plurality of turbulent flow rings are arranged on the inner wall of the heat exchange cavity in the length direction at intervals in a protruding mode. The turbulent flow rings are arranged on the inner wall of the heat exchange cavity, so that smoke can be prevented from directly flowing from the heating medium inlet to the heating medium outlet along the inner wall of the heat exchange cavity, the smoke is turbulent in the heat exchange cavity to be in contact with the heat exchange pipe, and the heat exchange efficiency of the heat exchange pipe is improved.
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