Method for alternately recycling exhaust heat of industrial dryer and external device thereof
By setting up parallel condensation heat exchange units and liquid supply systems in industrial dryers, online directional regeneration of locally clogged exhaust channels is achieved, solving the problem of localized clogs affecting overall heat exchange in existing technologies, and realizing efficient heat recovery and stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HANGZHOU PROJECT & RES INST OF ELECTRO MECHANIC & LIGHT IND
- Filing Date
- 2026-05-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies make it difficult to perform online directional regeneration of locally clogged exhaust channels in industrial dryers with high humidity and high pollution exhaust gases without interrupting or with minimal interruption of waste heat recovery.
By setting up a first direct-flow condensing heat exchange unit and a second direct-flow condensing heat exchange unit in parallel, and using the high-temperature initial condensate generated by the liquid supply unit, the target exhaust channel group is subjected to outlet-side liquid injection, pulse reverse propulsion cleaning, and reverse drying reset, thereby achieving online directional regeneration of locally blocked exhaust channels.
It improves the stability of long-term continuous operation of industrial dryers, maintains a high and stable level of heat recovery, reduces the overall heat exchange performance degradation caused by local fouling, improves cleaning effect and regeneration efficiency, and reduces system flow field fluctuations and re-adhesion risks.
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Figure CN122408428A_ABST
Abstract
Citation Information
Patent Citations
Textile dryer heat recovery system
US4532721A