Electrode automatic control method for high single-phase electrode power of yellow phosphorus furnace

Abstract

The invention discloses an electrode automatic control method for high single-phase electrode power of a yellow phosphorus furnace. The method is realized in a way that: real-time parameter values of the electrode in the yellow phosphorus furnace are collected and converted into a direct-current voltage analog signal, and the direct-current voltage analog signal is converted into a digital signal by an A/D sampling board, the digital signal is computed by a computer; when the single-phase electrode is in the upper limit position and the power is high, the computer outputs a signal to an elevating mechanism of the adjacent interference phase electrode, so that the adjacent interference phase electrode ascends. The computer is utilized to control the interference phase electrode adjacent to the high power electrode to ascend, thereby reducing the current of the adjacent interference phase electrode and reducing the input power of the adjacent interference phase; and thus, the power of the high power electrode in the upper limit position is driven to decrease as soon as possible, thereby achieving the triphase power balance, enhancing the electric and thermal efficiency, reducing the smelting power consumption, enhancing the yield, and efficiently realizing automatic control on the electrode when the power of the single-phase electrode in the yellow phosphorus furnace is high.

Description

technical field [0001] The invention relates to an automatic control method, in particular to an automatic control method for electrodes with relatively high power of a single-phase electrode of a yellow phosphorus furnace. Background technique [0002] Yellow phosphorus furnace is a kind of submerged arc furnace series. The smelted product is yellow phosphorus. The core theory of its smelting is: through ionized air to form a directional high-temperature ion flow-arc, convert electrical energy into heat energy, and provide sufficient high temperature for the reduction reaction. temperature field. [0003] The state of the arc depends on the distance between the electrode tip and the discharge body, the conductivity of the discharge body, the voltage, the temperature around the electrode, and the resistance characteristics of the charge medium. During the smelting process, as the liquid level (or slag level) of the molten pool at the bottom of the furnace continues to rise,...

AI Technical Summary

Problems solved by technology

[0004] In the smelting process of yellow phosphorus furnace, it often happens that the single-phase electrode is at the upper limit and the power is too high. Due to the unbalanced power of the three phases, the electrical and thermal efficiency is reduced, which not only increases the power consumption of smelting, but also reduces the output. It is difficult to maintain the normal progress of the smelting process

[0005] The existing automatic control system of yellow phosphorus furnace electrodes cannot handle the situation that the single-phase electrode in the furnace is at the upper limit and the power is too high. When the operator encounters this situation, he will switch to manual operation

Manual operation is not only random and labor-intensive, but also unbalanced three-phase power, high power consumption, low output, and low ore recovery rate