Steel rolling heating furnace waste heat recycling system

• Main Authors: LI JIANDONG, JING QIANGFU, YIN LI, DU TITAO, ZHANG ZHONGXI, TONG MIN
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2019
• Subjects: BLASTING; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; OVENS; RETORTS; WEAPONS

The utility model discloses a steel rolling heating furnace waste heat recycling system which comprises a heating furnace, and the interior of the heating furnace is sequentially divided into a preheating section, a heating section and a soaking section. Combustion nozzles for heating are arranged on the furnace walls of the heating section and the soaking section, and air inlets communicated withan air inlet pipe are formed in the bottoms of the heating section and the soaking section; the preheating section is provided with a smoke outlet, and a tail gas guide pipe is arranged on the smokeoutlet; a heat exchange device is arranged on a pipeline of the air inlet pipe; the tail gas guide pipe is connected with the heat exchange device and used for exchanging heat with the gas inlet pipe.The high-temperature tail gas exhausted from the smoke outlet exchanges heat with the air used for supporting combustion, so that the temperature of the air entering the heating furnace is increased,the energy loss for preheat