Automatic control method for electrode with low single phase electrode power in yellow phosphorus furnace

Abstract

The invention discloses an automatic control method for an electrode with low single phase electrode power in a yellow phosphorus furnace. The method comprises the following steps of: collecting the parameter value of the electrode in the yellow phosphorus furnace in real time; converting into a direct current voltage analogue signal; converting into a digital signal by an A / D sampling plate to be operated and processed by a computer; when the single phase electrode is positioned in lower limit and has low power, outputting a signal to a lifting mechanism of an adjacent interference phase electrode of the single phase electrode by the computer; and inserting an adjacent interference phase electrode. The invention has the advantages that the inserting of the adjacent interference phase electrode of the electrode with low power is controlled by the computer, and the current of the adjacent interference phase electrode is increased, therefore the input power of the adjacent interference phase electrode is increased to drive the power of the electrode in the lower limit and with low power to quickly raise, then the three-phase power is balanced, the electric and thermal efficiencies are enhanced, the smelting electric consumption is decreased, the output is enhanced, and the electrode automatic control for low single phase electrode power in a yellow phosphorus furnace is effectively realized.

Description

technical field [0001] The invention relates to an automatic control method, in particular to an automatic control method for electrodes with low single-phase electrode power in 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, the charge often...

AI Technical Summary

Problems solved by technology

[0004] During the smelting process of the yellow phosphorus furnace, it often happens that the single-phase electrode is at the lower limit and the power is low. 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 lower limit and the power is low. 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