3 results about "Aluminum levels" patented technology

The invention discloses a low-energy-consumption management and control method for an aluminum electrolytic cell, and relates to the technical field of electrolytic cell energy consumption management. Establishing a four-dimensional cooperative control system of electrolyte temperature, molecular ratio, aluminum level and cell voltage, and setting two control gradients of a stability interval and an energy efficiency optimization interval; a hierarchical dynamic regulation and control mechanism is implemented, regulation and control are executed according to the priority sequence of the aluminum level, the molecular ratio and the cell voltage, and a temperature self-adaptive compensation algorithm is adopted for molecular ratio regulation and control. When specific conditions are met, a golden window period control mode is activated, and special strategies are adopted for molecular ratio compensation and cell voltage adjustment; an emergency regulation and control mechanism is arranged to cope with abnormal fluctuation of molecular ratio, an energy efficiency optimization evaluation system is established, and a three-dimensional equilibrium curved surface is generated in an optimal control state in which direct current power consumption is reduced to 12510kwh / t.Al or below and is kept for 24 hours. The method realizes accurate regulation and control of key parameters of the aluminum electrolysis cell, effectively reduces energy consumption, and improves production stability and energy efficiency level.

The invention discloses an aluminum electrolysis cell and photovoltaic peak regulation cooperative operation method based on a low aluminum level, and belongs to the cross technical field of aluminum electrolysis production and new energy consumption. The method comprises the following steps: selecting a 330kA or 400kA series prebaked aluminum electrolysis cell, optimizing an aluminum discharge system, anode configuration and electrolyte components, and combining real-time monitoring to stably control the aluminum level at 15-16cm; according to output prediction and real-time power of a photovoltaic power station, series current is respectively increased to 350.625 kA and 425 kA in a white-light photovoltaic sufficient period, the current is dynamically adjusted in other periods, and it is ensured that the daily average current reaches 339 kA and 411 kA; key parameters such as polar distance and cell temperature are monitored in the whole process and are cooperatively regulated and controlled. According to the method, the current adaptability of the electrolytic cell is improved through a low-aluminum-level process, efficient consumption of photovoltaic power and flexible peak regulation of electrolytic production are achieved, productivity improvement, cost reduction and equipment stability are all considered, and a feasible way is provided for green and low-carbon transformation in the electrolytic aluminum industry.

The present invention relates to the technical field of aluminum electrolysis parameter measurement. Disclosed is a two-level and cathode voltage drop calculation method for an aluminum electrolysis cell. Voltage signal data and displacement signal data are collected and stored in arrays; the data is preprocessed; a trigger condition for an air and electrolyte interface and a trigger condition for an electrolyte and aluminum liquid interface are set; for each group of data in the arrays, an electrolyte level and an aluminum level are calculated and rationality determination is performed; and average values are taken as final values. The present invention achieves unmanned measurement of process parameters such as aluminum electrolysis cell electrolyte and aluminum liquid heights and cathode voltage drop, thereby improving the automation and intelligence level of the electrolysis process, reducing the risks and costs of manual measurement, and improving testing efficiency and accuracy.