Technological transformation achieves tens of millions of profit

In recent years, Chongqing Energy Group Chongqing Qineng Electric Aluminum Co., Ltd. has implemented the new green development concept of the 19th National Congress, closely followed the development strategy of the enterprise, and started from the aluminum production process and equipment, materials, etc. Equipment to achieve tens of millions of dollars of effectiveness.

Since 2015, the company has implemented four anode structural transformations to promote the continuous reduction of anode unit consumption. The first change from a flat bottom anode to an arc anode, the second upgrade to a slotted arc anode, and the third optimization to a large chamfer slotted arc anode, which was later improved to "double high" High density) anode. In addition, the slot system on the partitions improves the anode utilization rate, and the pouring electrolyte measures effectively prevent anodic oxidation. In addition to the standard sealing and shaping measures for the middle cracks and large surfaces, the anode cycle is extended from 32 days to 35 days, further reducing the unit Consume. In 2017, the company's anode unit consumption was reduced by 10 kg, and annual anode savings were 3,200 tons, creating economic benefits of 12.8 million yuan.

In 2017, the company and Xi'an Gerui Technology Co., Ltd. cooperated to implement the technical reform of the air compressor system and added a new energy-saving air compressor. After completing technical improvements such as circulating water pumps, air coolers, regulating valves, shelling gas circuits and energy-saving nozzles, the system performance was further optimized. In March 2018, the comparison results of the statistical power data showed that the energy saving was over 10 million kWh. Based on the self-provided electricity price of 0.3 yuan / kWh, the economic benefit reached more than 3 million yuan.

In August 2017, after the new technology of gas roasting in the electrolytic cell was started, the temperature distribution and temperature rise rate of the new cell during roasting were more uniform and reliable. Compared with the electric roasting start of traditional electrolyzers, the energy consumption cost of a single cell for gas roasting starts is more than 30,000 yuan. Based on the annual overhaul of 50 electrolyzers, the cost can be reduced by more than 1.5 million yuan.

In addition, the intelligent digital electrolyzer technology centralized management and control platform, which has been included in the major scientific and technological research projects of the Chongqing Municipal Science and Technology Commission, was officially launched in September 2017. After the completion of the three-year period, it will realize automatic collection, evaluation, transmission and Iterative upgrade, the estimated benefit is huge. It can achieve flat management, significant staff reduction and efficiency increase; automatic optimization of technical parameters, intelligent manufacturing can be expected; increase current efficiency by more than 0.5%, reduce electricity consumption per ton of aluminum by more than 80 kWh, and economic benefits exceed 20 million yuan.

It is reported that in 2018, the company will also carry out 6 scientific and technological projects such as cathode steel rod slag welding and new energy-saving steel claws, and implement 12 technological transformation projects such as flue gas purification and desulfurization and upper gas collection, and further implement the green development concept. To achieve innovation and effectiveness.