Waste heat recovery method for rotary cement kiln

• Main Authors: TONG JINLIANG, ZHOU HUANHUAN, XIANG MIN, ZHANG GUOPENG, WANG YANPU
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2014
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; 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; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MECHANICAL ENGINEERING; OVENS; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The invention discloses a waste heat recovery method for a rotary cement kiln. The waste heat recovery method includes that step A, the rotary cement kiln is divided into a high-temperature area and a low-temperature area according to different temperatures of a kiln body of the rotary cement kiln, a plurality of heat absorbing tubes are arranged outside each of the high-temperature area and the low-temperature area, the arrangement of the heat absorbing tubes are adjusted according to the shape of the kiln body to enable the heat absorbing tubes to be adhered to the outer side of the kiln body, the heat absorbing tubes absorb heat radiation of the kiln body, and temperatures of the heat absorbing tubes then rise; step B, cold water enters from one ends of the heat absorbing tubes of the lower-temperature area and exchanges heat with the heat absorbing tubes, temperature of the cold water rises, and the water is discharged from the other ends of the heat absorbing tubes to enter a hot water storage tank; step