Heat recovery system and device based on small-diameter dual-function

By adopting a heat energy recovery system with a small-pipe diameter dual function in cooling towers in the chemical industry, the pipe fin heat exchanger is modified to increase the heat exchange area and use the heat from the exothermic reaction to perform heat energy recovery, solving the problems of low heat exchange efficiency and large equipment volume in the existing technology, and achieving efficient heat energy recovery and fluidized bed drying.

CN119268263BActive Publication Date: 2025-03-18SHANDONG CANMING PRECISION TECH CO LTD +1
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Patent Information

Application Number
CN202411527606.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-30
Publication Date
2025-03-18
Estimated Expiration
2044-10-30

AI Technical Summary

Technical Problem

The existing cooling towers in the chemical industry have low heat exchange efficiency, large volume, and large area. In addition, traditional pipe fin heat exchangers cannot meet the relevant performance requirements of fluidized bed drying in the production of chlorinated polymers.

Method used

A heat energy recovery system based on small-pipe diameter dual functions is adopted, including multiple tube fin heat exchangers, each heat exchange area/external volume is ≥280m2/m3. By transforming the tube fin heat exchanger in the blower heat exchange space of the fluidized bed, heat energy is recovered by using the heat released from the exothermic reaction, the high-temperature section media cooling and dry hot air production of the fluidized bed.

Benefits of technology

It improves heat energy recovery efficiency, reduces energy consumption, reduces equipment volume and floor area, and ensures stable operation and efficient performance of fluidized bed drying.

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Abstract

The present invention relates to the field of heat recovery technology, and more specifically to a heat recovery system and device based on small-diameter dual-function; comprising a heat-insulating medium storage tank, a plurality of heat exchange blasting spaces, each heat exchange blasting space having its own tube-fin heat exchanger; the diameter of the heat exchange tube in the tube-fin heat exchanger is ≤4mm; each tube-fin heat exchanger has its own liquid inlet valve and liquid outlet valve, a liquid inlet pump is arranged at the output end of the medium storage tank, and the liquid inlet pump is connected to each liquid inlet valve by a branch pipeline; the heat exchange area / outer volume of each tube-fin heat exchanger is ≥280m 2 / m 3 The present invention connects a plurality of heat exchange tubes in parallel, abandoning the series connection of the traditional fin heat exchanger, so that when one of the heat exchange tubes is blocked, the fluid can flow along the other unblocked heat exchange tubes, so that the tube-fin heat exchanger can operate normally.
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