GRANULATED SLAG WASTE HEAT RECOVERY GENERATING SET

• Main Authors: KOSHIO FUMIO, YAMAGUCHI MOTONORI, GOTOUDA HIDEMI, TERADA YUUICHI, UMAGOE ITSUO, NISHI NORIAKI, HOSODA SHIROU
• Format: Patent
• Language: English
• Published: 03.10.1985
• Subjects: BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PURPOSE:To stabilize the transfer of heat energy in a gas with a heat medium as well as to generate power continuously in a stable state with an intermittent feed heat source by equalizing a temperature rise in cooling water. CONSTITUTION:Simultaneously with melting slag being led into a blow-making device 2 from a blast furnace 1, a cooling water regulating valve 16 is opened, and cooling water is fed to the blow-making device 2 according to quantity or discharge of the melting slag and an exhaust pattern. The cooling is heated and fed to a stirring tank 3 together with the slag, and when it reaches to a certain amount, a level switch 17 operates whereby a water granulating pump 4 stops any operation of the blow-making device 2 till slurry inside the stirring tank 3 comes to being below a certain level, and feeds the slurry to a dewatering bin 5. Here, the slag is taken out, and warm water is led into a receiving tank 12. This warm water flow is subject to intermittent variations but regulated to the warm water flow averaged, driving a warm water pump 18, while the cooling water heat-exchanged at a heat exchanger 13 for dichlorodifluoromethane is returned to the blow-making device 2 by way of a water feed pipe 11. The receiving tank 12 precipitates dust in the warm water.