HEAT EXCHANGE SYSTEM FOR WASTE HEAT RECOVERY

WIPO Patent Application WO/2018/232732

A1

A heat exchange system for waste heat recovery comprises a steam waste heat inlet (1), a condensate outlet (2), a circulation pump (3), and a water storage tank (4). The steam waste heat inlet (1) and the condensate outlet (2) are connected by a helical heat exchange tube (5). The helical heat exchange tube (5) is directly disposed in a waste heat exchange water tank (6). The waste heat exchange water tank (6) and the water storage tank (4) form a circulating water circuit via a pipeline (7) and the circulation pump (3). An inner wall of the helical heat exchange tube (5) sleeves on a core tube (51) to form a dual-layer heat exchange tube. The system uses the helical heat exchange tube (5) to recover steam waste heat, and heat energy that previously could not be utilized is stored in water. A controller (9) is provided to automatically control circulation between the waste heat exchange water tank (6) and the water storage tank (4), thereby realizing automated control. Hot air passes through the dual-layer heat exchange tube, and the heated core tube (51) is capable of thermal insulation, such that the hot air entering the dual-layer heat exchange tube is prevented from being immediately cooled and becoming condensate. Heat in boiler flue gas is effectively utilized, conserving energy and protecting the environment.

GU YUZHONG (CN)

PCT/CN2017/089733

December 27, 2018

June 23, 2017

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GU YUZHONG (CN)

F28B1/02; F28D7/08

CN204923932U	2015-12-30
CN202361826U	2012-08-01
CN203687703U	2014-07-02
CN2677847Y	2005-02-09
CN205784777U	2016-12-07
US20070158048A1	2007-07-12

SBZL IP LAW OFFICE (CN)

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