On Jan 18, the frequency control and energy saving system reconstruction project of Zhongtian steel 550m2 sintering main exhauster fan undertaken by a subsidiary of CIE—Hunan Changtian Automation Engineering Co., Ltd in mode of general contact was completed and put into production. After the system is put into operation, energy consumption is lowered by over 20% compared with the system before reconstruction, exceeding the owner’s predicted target of lowering energy consumption by 17%.

CIE is the leading organization for research and application of sintering main exhauster fan frequency control and energy saving. Since the signing of Brazil GA sintering main exhauster fan frequency control project, the frequency control mode has been adopted in series of projects undertaken by CIE, including Brazil AMM sintering project, Baotou Steel 2X500m2sintering project, Benxi Steel and Beitai Steel 450m2 sintering project etc. The energy saving effect of the frequency control operation is significant, which has huge economic and social values. The smooth commissioning of Zhongtian Steel main exhauster fan frequency control system reconstruction project this time reflects the comprehensive capabilities of CIE in terms of the main exhauster fan frequency control technology and project management.

The sintering main exhauster fan frequency control system is system engineering, starting with the system design, through control of process and system, the sintering process control is operated in frequency control mode of the main exhauster fan system. CIE concentrates its advantages of sintering process and automatic control, through many years of system research, they have obtained remarkable achievements. CIE has successfully applied 23 national invention patents and 5 international invention patents in terms of main exhauster fan frequency control, establishing its leading position in the main exhauster fan frequency control system and its automatic control.