Electrochemical system

An electrochemical system comprising:

• a reaction fluid supply line configured to supply a reaction fluid;
• a first gas-liquid separator connected to the reaction fluid supply line and configured to separate the reaction fluid into a gaseous reaction fluid and a liquid reaction fluid;
• a circulation line connected to the first gas-liquid separator and configured to allow the liquid reaction fluid to circulate therethrough;
• a water electrolysis stack provided in the circulation line;
• a first bypass line having a first end at an upstream side of the water electrolysis stack and connected to the circulation line, and a second end at a downstream side of the water electrolysis stack and connected to the circulation line;
• and
• a filter part provided in the reaction fluid supply line and configured to filter the reaction fluid.

An electrochemical system comprising:

• a reaction fluid supply line configured to supply a reaction fluid;
• a first gas-liquid separator connected to the reaction fluid supply line and configured to separate the reaction fluid into a gaseous reaction fluid and a liquid reaction fluid;
• a circulation line connected to the first gas-liquid separator and configured to allow the liquid reaction fluid to circulate therethrough;
• a water electrolysis stack provided in the circulation line;
• a first bypass line having a first end at an upstream side of the water electrolysis stack and connected to the circulation line, and a second end at a downstream side of the water electrolysis stack and connected to the circulation line;
• a second bypass line at the downstream side of the water electrolysis stack and connected to the circulation line;
• a second gas-liquid separator connected to the second bypass line and configured to separate the liquid reaction fluid that flows along the second bypass line, into a gaseous reaction fluid and a liquid reaction fluid;
• and
• a recirculation line having a first recirculating end connected to the second gas-liquid separator, and a second recirculating end connected to the first gas-liquid separator, the recirculation line being configured to recirculate the liquid reaction fluid that has passed through the second gas-liquid separator, to the first gas-liquid separator.