Chemical waste gas purification and waste heat recovery system

CN224340772UActive Publication Date: 2026-06-09ANPUDETAI ENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ANPUDETAI ENG TECH CO LTD
Filing Date
2025-06-27
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing chemical waste gas treatment processes, scale easily forms on the surface of heat exchangers, leading to a decrease in heat transfer efficiency. Furthermore, the waste heat recovery process requires regular shutdowns for cleaning, which affects system operation and energy consumption.

Method used

A cleaning mechanism is installed inside the waste gas heat exchange tube. The kinetic energy of the chemical waste gas drives the fan blades to rotate and move the spiral blades back and forth to remove dirt, achieving self-cleaning without additional power. Waste heat recovery is optimized through a staged design of spiral tube and fixed tube sheet heat exchangers.

Benefits of technology

It achieves self-cleaning of the heat exchanger surface, avoids scaling that affects heat transfer efficiency, reduces energy consumption, improves waste heat recovery efficiency, simplifies maintenance, and reduces equipment failure rate and maintenance costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224340772U_ABST
    Figure CN224340772U_ABST
Patent Text Reader

Abstract

This utility model discloses a chemical waste gas purification and waste heat recovery system, relating to the field of waste gas treatment technology. It includes a waste gas heat exchange tube with a cleaning mechanism inside. The cleaning mechanism comprises a reciprocating screw, a fan blade assembly, and a spiral blade. The reciprocating screw and the waste gas heat exchange tube have the same axis. The reciprocating screw has two symmetrical threaded grooves with opposite rotation directions. The fan blade assembly can rotate axially along the threaded grooves of the reciprocating screw. The spiral blade is connected to the fan blade assembly and sleeved on the reciprocating screw. It directly utilizes the kinetic energy of the flowing chemical waste gas to drive the fan blade rotation, converting the kinetic energy of the waste gas into the reciprocating motion energy of the cleaning mechanism. No additional electricity or mechanical power is required. The structure is simple, effectively removing dirt from the pipe, preventing heat transfer deterioration caused by scaling, improving waste heat recovery efficiency, and reducing energy consumption costs.
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