Abstract: Combined combustion and pyrolysis (CCP) systems, and associated systems and methods, are disclosed herein. In some embodiments, the CCP system includes an input valve fluidly coupleable to a fuel supply to receive a hydrocarbon reactant, a CCP reactor fluidly coupled to the input valve, and a carbon separation component fluidly coupled to the CCP reactor. The CCP reactor can include a combustion chamber, a reaction chamber in thermal communication with the combustion chamber and/or fluidly coupled to the input valve, and an insulating material positioned to reduce heat loss from the combustion chamber and/or the reaction chamber. The CCP reactor can also include a combustion component positioned to combust a fuel within the combustion chamber. The combustion can heat the reaction chamber and the hydrocarbon reactant flowing therethrough. The heat causes a pyrolysis of the hydrocarbon reactant that generates hydrogen gas and carbon.

Abstract: Systems for producing hydrogen gas for local distribution, consumption, and/or storage, and related devices and methods are disclosed herein. A representative system includes a pyrolysis reactor system that can be coupled to a supply of reaction material that includes a hydrocarbon. The pyrolysis reactor system includes one or more combustion components positioned to transfer heat to the reaction material to convert the hydrocarbon into an output that includes hydrogen gas and carbon particulates. The pyrolysis reactor system also includes a carbon separation system positioned to separate the hydrogen gas the carbon particulates in the output. In various embodiments, the system also includes components to locally consume the filtered hydrogen gas, such as a power generator, heating appliance, and/or a combined heat and power device.