Water leakage detection and treatment method for closed submerged arc furnace

Abstract

The invention discloses a water leakage detection and treatment method for a closed submerged arc furnace. Content of H2 and content of O2 in tail gas of the closed submerged arc furnace are detected automatically in real time through a computer control system, the change rate of H2 and the change rate of O2 are worked out, the furnace pressure change rate is combined, comparison with given H2 and O2 and a set reference value of the pressure change rate is performed, so that water leakage conditions of a closed submerged arc furnace member are judged accurately, accurate measures are taken timely, serve explosion accidents caused by water leakage are avoided, and the closed submerged arc furnace can run safely and reliably.

Description

technical field [0001] The invention relates to a method for detecting and treating water leakage in a closed submerged arc furnace. Background technique [0002] The airtight submerged arc furnace covers various resistance electric arc furnaces such as calcium carbide furnace, ferroalloy furnace, yellow phosphorus furnace, etc. The smelted products include calcium carbide, yellow phosphorus, ferrochrome, silicon manganese, ferronickel, corundum, ferrotitanium, lead and zinc, etc. , Its core theory of smelting is: preheating the charge through the charge current, ionizing the furnace gas to form a directional high-temperature ion flow-arc, converting electrical energy into heat energy, and providing a sufficiently high temperature field for the reduction reaction. [0003] The furnace cover, electrode sealing components, and feed elements of the closed submerged arc furnace all need to make sealed circulating water channels inside the components for water cooling, and the wa...

AI Technical Summary

Problems solved by technology

Because of fluctuations in the operating power of the furnace, equipment failures, power outages and maintenance, etc., will cause changes in water temperature. These factors often cause the waterway sealing performance of the furnace cover, electrode sealing components, and feed components to decrease, resulting in water leakage to the furnace material surface.

If the water staying on the surface of the material penetrates to the electrode work point, it will cause a huge amount of water vapor and cause an explosion, resulting in serious equipment and personal accidents

If it is a closed submerged arc furnace for smelting calcium carbide products, the water leaking to the material surface will flow to the electrode work point, and a chemical reaction will occur to generate acetylene gas, which will cause a violent explosion accident