Double-closed-loop dynamic optimization LT-process converter gas recycling and fan energy-saving control method

• Main Author: GAO YIFU
• Format: Patent
• Language: Chinese; English
• Published: 10.07.2018
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; 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

The invention provides a double-closed-loop dynamic optimization LT-process converter gas recycling and fan energy-saving control method, belongs to a converter steelmaking LT-process gas recycling technology and a fan variable-speed energy-saving technology, and aims to research and develop a control method which adapts to converter gas recycling and fan variable-speed energy-saving working conditions according to characteristics of LT-process converter gas recycling and fan variable-speed running so as to improve converter gas recycling rate and implement fan variable-speed energy-saving optimal control. According to the main point, the opening device of an inlet valve of a fan is adjusted according to the amount of flue gas of a converter, the speed of the fan is controlled according tomicro differential pressure of a converter opening, good gas recycling effect and fan energy-saving effect are achieved by organic combination of the adjustment on the opening degree of the inlet valve and control over the s