Systems and methods for local generation and/or consumption of hydrogen gas
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 that can be coupled to a supply of reaction material that includes a hydrocarbon. The reactor includes one or more flow channels positioned to transfer heat to the reaction material to convert the hydrocarbon into an output that includes hydrogen gas and carbon particulates. The system also includes a carbon separation system operably coupled to the pyrolysis reactor 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.
1 . A system for producing hydrogen gas for local distribution, consumption, and/or storage, the system comprising:
a pyrolysis reactor comprising:
an input couplable to a supply of reaction material that includes a hydrocarbon;
one or more reaction channels coupled to the input, wherein the one or more reaction channels are positioned to transfer heat to the reaction material to convert the hydrocarbon into an output flow that includes hydrogen gas and carbon particulates; and
an output thermally coupled to the input, wherein the output is positioned to transfer heat from the output flow to the reaction material in the input to preheat the reaction material in the input during operation;
a carbon separation system operably coupled to the output of the pyrolysis reactor to separate the hydrogen gas from the carbon particulates in the output flow; and
a burner couplable to the output of the pyrolysis reactor, wherein the burner is positioned to receive and combust at least a portion of the output flow.
2 . The system of claim 1 wherein the burner is thermally coupled to the one or more reaction channels and positioned to provide the heat transferred to the reaction material in the one or more reaction channels.
3 . The system of claim 1 wherein the pyrolysis reactor is sized to consume the reaction material at a consumption rate between 18 and 135,000 British thermal units per minute.
4 . The system of claim 1 wherein the pyrolysis reactor is sized to reaction material at a consumption rate between 10 and 3,350,000 million British thermal units per year.
5 . The system of claim 1 , further comprising a heating component, wherein the output is operably coupled to the heating component downstream from the carbon separation system, and wherein the heating component includes at least one of: a furnace, a forced air distribution system, a boiler, a radiator distribution system, a heat pump, a hybrid heating system, or a hydronic heating system.
6 . The system of claim 1 wherein the burner is a first burner, wherein the output is operably coupled to a second burner downstream from the carbon separation system, and wherein the second burner is a part of a heating component including at least one of: a furnace, a forced air distribution system, a boiler, a radiator distribution system, a heat pump, a hybrid heating system, or a hydronic heating system.
7 . The system of claim 1 wherein the input includes one or more coils around the output.
8 . The system of claim 1 wherein the pyrolysis reactor further comprises a carbon removal component positioned to remove carbon from the one or more reaction channels.
9 . The system of claim 8 , wherein the carbon removal component comprises one or more of:
mechanical scraping component;
a fluid scraping component;
a sloped surface of the one or more reaction channels; or
a precipitation component.
10 . The system of claim 1 wherein the pyrolysis reactor further comprises a chamber at least partially surrounding the one or more reaction channels, wherein the chamber is configured to hold a vacuum.
11 . A pyrolysis reactor for producing hydrogen gas for local distribution, consumption, and/or storage, the pyrolysis reactor comprising:
an input couplable to a supply of reaction material that includes a hydrocarbon;
a reaction chamber coupled to the input, the reaction chamber having one or more flow channels positioned to provide an input heat to the reaction material to convert the hydrocarbon into an output flow that includes hydrogen gas and carbon particulates; and
an output thermally coupled to the input to transfer at least a portion of heat in the output flow to the reaction material in the input.
12 . The pyrolysis reactor of claim 11 , further comprising a burner positioned to direct a hot flue gas through the one or more flow channels in the reaction chamber.
13 . The pyrolysis reactor of claim 12 wherein the burner is coupled to the output of the pyrolysis reactor to receive and combust at least a portion of the output flow to generate the hot flue gas.
14 . The pyrolysis reactor of claim 11 wherein the one or more flow channels are oriented in a vertical direction to reduce fouling of the one or more flow channels from the output.
15 . The pyrolysis reactor of claim 11 , further comprising:
a chamber at least partially surrounding the one or more flow channels; and
one or more heating components positioned in the chamber, wherein:
in a first state, the chamber is configured to contain a gas and conduct heat from the one or more heating components to the one or more flow channels; and
in a second state, the chamber is configured to hold a vacuum.
16 . The pyrolysis reactor of claim 11 wherein the one or more flow channels are sized to consume the reaction material at a consumption rate between 10 and 70,800 million British thermal units per year.
17 . The pyrolysis reactor of claim 11 wherein the one or more flow channels are sized to consume the reaction material at a consumption rate between 0.018 and 6105 standard cubic feet per minute.
18 . The pyrolysis reactor of claim 11 wherein the one or more flow channels are sized to consume the reaction material at a consumption rate between 10 and 3,350,000 million British thermal units per year.
19 . The pyrolysis reactor of claim 11 , further comprising a carbon separation system fluidly coupled to the output to separate the hydrogen gas from the carbon particulates in the output flow.
20 . The pyrolysis reactor of claim 11 , further comprising a carbon removal component at least partially within the reaction chamber, wherein the carbon removal component includes one or more of:
mechanical scraping component;
a fluid scraping component;
a sloped surface of the one or more flow channels; or
a precipitation component.
21 . A method for generating hydrogen gas for local distribution, consumption, and/or storage, the method comprising:
receiving, at an input of a pyrolysis reactor, a fuel gas comprising a hydrocarbon;
preheating, in the input, the fuel gas using residual heat in an output flow from the pyrolysis reactor;
heating, within one or more flow channels of the pyrolysis reactor, the fuel gas to a reaction temperature, wherein, at the reaction temperature, at least a portion of the hydrocarbon in the fuel gas converts into hydrogen gas and carbon particulates; and
separating the hydrogen gas and carbon particulates.
22 . The method of claim 21 , further comprising combusting, in a burner of the pyrolysis reactor, at least a portion of the hydrogen gas to heat the one or more flow channels of the pyrolysis reactor.
23 . The method of claim 21 wherein preheating the fuel gas includes preheating the fuel gas to a temperature of at least 500° C.
24 . The method of claim 21 wherein the fuel gas is received at a rate between 0.018 and 6105 standard cubic feet per minute.
25 . The method of claim 21 wherein the fuel gas is received at a rate between 10 and 3,350,000 million British thermal units per year.