System for monitoring the liquid level in a mixture of a gas and a liquid comprising two intermiscible components having different densities and method thereof

A system for containing a chemical mixture comprising a liquid comprising at least two intermiscible components having different densities, and a gas, comprising:

• a spherical reservoir comprising a top section, a bottom section and a bottom;
• a vertically positioned standpipe having a top section in fluid communication with the top section of the spherical reservoir through a connection pipe, and a bottom section comprising a bottom, in fluid communication with the bottom section of the spherical reservoir through a connection pipe;
• a conduit in fluid communication with the top section of the spherical reservoir for supplying the gas from the chemical mixture;
• a first draining pipe in fluid connection with the bottom of the spherical reservoir;
• and
• a second draining pipe in fluid communication with the bottom of the standpipe;
• wherein the bottom section of the standpipe is higher than the bottom section of the spherical reservoir, and wherein the connection pipe is a downwardly-inclined pipe from the bottom section of the standpipe to the bottom section of the spherical reservoir.