Reasons for electrolyzer fires

1. Excessive hydrogen content in chlorine. 2. Plate short-circuiting due to electrolyzer leakage. 3. Failure to remove crystalline deposits from the electrolyzer in a timely manner. 4. Blockage of individual cells. There seem to be many issues, but the most common one is the third one

Leakage. Hydrogen leakage, short circuits, and so on. There is no perfect way to completely prevent this; it is necessary to strengthen inspections to monitor the operation of the electrolytic cells, identify problems early and address them promptly in order to avoid fire accidents

Ion-exchange membrane cell? Cathode side leakage. This situation has occurred with many manufacturers; using a fire extinguisher can work.

It seems the fire was caused by water leakage.

Generally, it is the blockage of the diode that causes the cell voltage to rise rapidly, leading to the ignition and explosion of the electrolyzer. Regularly monitor the tank voltage, assign a dedicated person to oversee it, and identify and resolve issues as early as possible

The hose can get clogged, so it should be cleaned regularly on a rotational basis to take preventive measures

Firstly, leakage in the cell gaskets causes a short circuit, which leads to a fire. In ion-exchange membrane caustic soda electrolyzers, the cathode chamber contains NaOH solution and hydrogen, while the anode chamber contains NaCl solution and chlorine. If the gaskets are not installed properly and come into contact with each other, the displacement of those gaskets will result in the stretching and tearing of the ion-exchange membrane. If a leak occurs during operation, it may lead to \"dry burning\" inside the electrolyzer; the ion membrane will be damaged, the electrode plates will melt, and in extreme cases, combustion and explosion may occur. Apart from improper bonding, failures in the extruder or incorrect operation can also cause leaks at the gaskets, as well as excessive pressing force that leads to damage to the rubber gaskets and membranes. Secondly, the ion membrane is torn or punctured, causing hydrogen and chlorine to mix and resulting in a flash explosion. The ion membrane gets torn or punctured due to the displacement of gaskets or when the gaskets leak and catch fire, leading to deformation of the tank frame. Under positive pressure, hydrogen diffuses rapidly toward the anode; when the mixture of Cl2 and H2 reaches the explosive limit of 5%-87.5%, a flash explosion occurs. The shock wave resulting from this flash explosion causes the gaskets to leak and catch fire, leading to severe deformation of the electrode grids in the electrolysis cell.

Our plant’s ion exchange membranes have caught fire twice; it seems to be a problem with the gaskets, and both incidents occurred while increasing the current

Poor ground contact leads to the accumulation of static electricity, resulting in sparks; in such cases, the sparks usually appear in the cathode overflow tube. Short circuits between the anode and cathode generate sparks; in such cases, these sparks usually appear outside the plates of the electrolyzer. Additionally, leaks in the electrolyzer can also cause sparks that lead to ignition