Converter coal gas waste heat utilization method

• Main Authors: ZHANG YONG, HU XIUGAO, PAN YONGLIAN
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2013
• Subjects: BLASTING; CHEMISTRY; 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; METALLURGY; METALLURGY OF IRON; OVENS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; WEAPONS

The invention provides a converter coal gas waste heat utilization method, and relates to the technical field of converter coal gas waste heat utilization. According to the present invention, coal gas is introduced to a first stage spray drying tower through an air blower, and the coal gas is subjected to low concentration acid spray drying inside the first stage spray drying tower, enters a second stage spray drying tower, then is subjected to high concentration acid spray drying inside the second stage spray drying tower, and enters a coal gas holder, wherein the low concentration acid for spray drying in the first stage spray drying tower is provided by a low concentration acid storage tank, and is cooled through a graphite evaporator, the high concentration acid for spray drying in the second stage spray drying tower is provided by a high concentration acid storage tank, and is cooled through a shell and tube heat exchanger, a concentration volume percentage of the low concentration acid is 20-93%, and a