Co-production of hydrogen, carbon, electricity, and concrete with carbon dioxide capture

A system comprising:

• a hydrocarbon feed stream comprising a hydrocarbon;
• a pyrolysis chamber configured to receive the hydrocarbon feed stream and expose the hydrocarbon feed stream to heat in an absence of oxygen to convert the hydrocarbon feed stream into a solids stream comprising carbon and a gas stream comprising hydrogen;
• a gas separation unit configured to receive the gas stream from the pyrolysis chamber and separate the hydrogen from the gas stream to produce an exhaust gas stream and a first hydrogen stream comprising at least a portion of the hydrogen from the gas stream;
• a carbon separation unit configured to receive the solids stream from the pyrolysis chamber and separate the carbon from the solids stream to produce a carbon stream;
• a water stream comprising water;
• an electrolysis unit configured to receive the water stream and electrical power, the electrolysis unit configured to use the electrical power to perform electrolysis on the water stream to produce an oxygen stream comprising oxygen and a second hydrogen stream comprising hydrogen;
• a power generation unit configured to receive at least a portion of the oxygen stream from the electrolysis unit and a first portion of the carbon stream from the carbon separation unit, the power generation unit comprising a direct carbon fuel cell configured to combine the oxygen from the portion of the oxygen stream and the carbon from the first portion of the carbon stream to generate power and a carbon dioxide stream comprising carbon dioxide, wherein a first portion of the power generated by the power generation unit is provided to the electrolysis unit to perform electrolysis on the water stream;
• a cement stream comprising cement;
• a ready-mix concrete production unit configured to receive the cement stream and a second portion of the carbon stream, the ready-mix concrete production unit configured to mix the cement stream, the second portion of the carbon stream, and water to form a concrete mixture, wherein the ready-mix concrete production unit is configured to receive a first portion of the carbon dioxide stream from the power generation unit and a second portion of the power generated by the power generation unit, and the ready-mix concrete production unit is configured to use the second portion of the power generated by the power generation unit to pressurize the first portion of the carbon dioxide stream to form a pressurized carbon dioxide stream, the pressurized carbon dioxide stream in a liquefied or supercritical state, the ready-mix concrete production unit configured to discharge the pressurized carbon dioxide stream and a first portion of the concrete mixture as a ready-mix concrete stream;
• and
• a precast concrete production unit configured to receive a second portion of the concrete mixture from the ready-mix concrete production unit and a second portion of the carbon dioxide stream from the power generation unit, the precast concrete production unit configured to cure the second portion of the concrete mixture using the second portion of the carbon dioxide stream to produce a precast concrete stream.