Apparatus for the production of gas

Apparatus for producing gas, comprising:

• a reactor (R) that holds a determined volume, arranged to contain two or more reactants and at least one gas;
• a vapour separator (3), arranged in communication with the reactor (R) so as to remove vapour and/or liquid from the gas produced in the reactor (R);
• a recirculation conduit (31) which connects the vapour separator (3) to the reactor (R), to send the reactor (R) a flow rate of liquid accumulated in the separator (3) itself;
• a supply device (2), comprising a pump, arranged along the recirculation conduit (31);
• a filter (4), arranged in communication with the vapour separator (3) so as to remove particles and/or unwanted products from the gas produced in the reactor (R);
• a control valve (5), arranged to regulate, following a command, the supply of gas to the user (U);
• a control module (MC), connected to the supply device (2) and to the control valve 5;
• a first pressure detector (6), arranged to detect a first pressure (P1) of the gas upstream of the control valve (5), which is connected to the control module (MC) and sends the control module (MC) a first signal indicating the pressure (P1) detected;
• a second pressure detector (7), arranged to detect a second pressure (P2) of the gas downstream of the control valve (5), which is connected to the control module (MC) and sends the control module (MC) a second signal indicating the pressure (P2) detected;
• the control module (MC) is arranged to detect the variation over time of the first pressure (P1) and the second pressure (P2), and to act as follows:
• if the first pressure (P1) increases over time, the control module (MC) sends the supply device (2) a command to reduce the intake of at least one of the reactants;
• if the pressure (P1) decreases over time, the control module (MC) sends the supply device (2) a signal to increase the intake of at least one of the reactants;
• if the second pressure (P2) increases over time, the control module (MC) sends the control valve (5) a signal to reduce the gas flow rate;
• if the second pressure (P2) decreases over time, the control module sends the control valve (5) a signal to increase the gas flow rate.