Batch systems and methods for hydrogen gas extraction from a liquid hydrogen carrier

A method for extracting hydrogen gas from a liquid hydrogen carrier using a hydrogen gas reactor and a liquid hydrogen carrier reservoir fluidly connected to the hydrogen gas reactor by a liquid hydrogen carrier channel, the method comprising:

• flowing the liquid hydrogen carrier between liquid hydrogen carrier reservoir and the hydrogen gas reactor through the liquid hydrogen carrier channel, in response to a pressure difference between the hydrogen gas reactor and the liquid hydrogen carrier reservoir,
• extracting the hydrogen gas in the hydrogen gas reactor by exposing a surface of a catalyst, to the liquid hydrogen carrier, the catalyst disposed within the hydrogen gas reactor;
• and
• flowing the hydrogen gas from the hydrogen gas reactor via a hydrogen gas outlet.

A method for extracting hydrogen gas from a liquid hydrogen carrier using a hydrogen gas reactor and a liquid hydrogen carrier reservoir fluidly connected to the hydrogen gas reactor, the method comprising:

• flowing the liquid hydrogen carrier from the liquid hydrogen carrier reservoir into the hydrogen gas reactor through a first liquid hydrogen carrier channel, in response to a force of gravity;
• exposing a surface of a catalyst, to the liquid hydrogen carrier, the catalyst being disposed within the hydrogen gas reactor;
• extracting the hydrogen gas in the hydrogen gas reactor in response to the exposure of the surface of the catalyst, to the liquid hydrogen carrier;
• flowing the hydrogen gas from the hydrogen gas reactor into the liquid hydrogen carrier reservoir via a gas connecting channel;
• flowing the hydrogen gas from the hydrogen gas reactor via a hydrogen gas outlet;
• and
• flowing the liquid hydrogen carrier between liquid hydrogen carrier reservoir and the hydrogen gas reactor through a second liquid hydrogen carrier channel, in response to a pressure difference between the hydrogen gas reactor and the liquid hydrogen carrier reservoir.

A system for extracting hydrogen gas using a liquid hydrogen carrier, the system comprising:

• a hydrogen gas reactor including an enclosure;
• a catalyst disposed within the enclosure;
• and
• at least one movable element configured to selectively move the liquid hydrogen carrier relative to the catalyst in order to change a surface area of the catalyst exposed to the liquid hydrogen carrier.

A system for extracting hydrogen gas from a liquid hydrogen carrier, the system comprising:

• a first hydrogen gas reactor having a first hydrogen gas outlet;
• at least a second hydrogen gas reactor having a second hydrogen gas outlet;
• a hydrogen gas flow conduit, wherein the hydrogen gas flow conduit includes a first branch configured to carry hydrogen gas received from the first hydrogen gas outlet to a check valve, a second branch configured to carry hydrogen gas received from the second hydrogen gas outlet to the check valve, and an outflow end;
• wherein the first and second hydrogen gas reactors are configured to extract hydrogen gas by exposing the liquid hydrogen carrier to a catalyst;
• wherein the check valve is configured to flow hydrogen gas from the first branch to the outflow end and block a flow of hydrogen gas from the second branch to the outflow end, when a pressure difference between pressure in the first branch, and pressure at the outflow end is positive and above a threshold value;
• and
• wherein the check valve is configured to flow hydrogen gas from the second branch to the outflow end and block a flow of hydrogen gas from the first branch to the outflow end, when a pressure difference, between pressure in the second branch and pressure at the outflow end is positive and above a threshold value.

A system for extracting hydrogen gas using a liquid hydrogen carrier, the system comprising:

• a first hydrogen gas reactor having a first gas outlet, the first gas outlet including a first check valve having a first inflow side and a first outflow side;
• a second hydrogen gas reactor having a second gas outlet, the second gas outlet including a second check valve having a second inflow side and a second outflow side;
• a hydrogen gas flow conduit comprising:
• a first branch configured to carry hydrogen gas received from the first gas outlet;
• a second branch configured to carry hydrogen gas received from the second gas outlet;
• and
• an outflow end;
• wherein the first and second hydrogen gas reactors are configured to extract hydrogen gas by exposing the liquid hydrogen carrier to a catalyst;
• wherein the first check valve is configured to allow a flow of the hydrogen gas from the first hydrogen gas reactor to the outflow end when a pressure difference between the first inflow side and the first outflow side is positive and above a threshold value;
• and
• wherein the second check valve is configured to allow a flow of the hydrogen gas from the second hydrogen gas reactor to the outflow end when a pressure difference between the second inflow side and the second outflow side is positive and above a threshold value.

A method for extracting hydrogen gas from a liquid hydrogen carrier using a system of hydrogen gas reactors, the method comprising:

• generating hydrogen gas in a first hydrogen gas reactor by exposing a first liquid hydrogen carrier in the first hydrogen, gas reactor to a first catalyst;
• supplying, the generated hydrogen gas from the first hydrogen gas reactor to a first check valve in, fluid communication with a first hydrogen gas outlet associated with the first hydrogen gas reactor;
• generating hydrogen gas in a second hydrogen gas reactor by exposing a second liquid hydrogen carrier in the second hydrogen gas reactor to a second catalyst;
• supplying the generated hydrogen gas from the second hydrogen gas reactor to the second check valve in fluid communication with a second hydrogen gas outlet associated with the second hydrogen gas reactor;
• flowing, the generated hydrogen as from the first hydrogen gas reactor through the first check valve, when hydrogen gas pressure associated with the first hydrogen gas outlet is higher than a required pressure value based on an external load;
• blocking a flow of hydrogen gas from the first hydrogen gas reactor through the first check valve, when hydrogen gas pressure associated with the first hydrogen gas outlet is not higher than the required pressure value based on the external load;
• flowing the generated hydrogen gas from the second hydrogen gas reactor through the second check valve, when hydrogen gas pressure associated with the second hydrogen gas outlet is higher than the required pressure value based on the external load;
• and
• blocking a flow of hydrogen gas from the second hydrogen gas reactor through the second check valve, when hydrogen gas pressure associated with the second hydrogen gas outlet is not higher than the required pressure value based on the external load;
• wherein the system is configured to alternate flowing the hydrogen gas from the first hydrogen gas reactor and from the second hydrogen gas reactor.