A hydrogen production supply system that produces hydrogen gas to be supplied to a hydrogen storage tank, the hydrogen production supply system including a control circuit configured to control an operation load ratio of the hydrogen production apparatus to a predetermined operation load ratio, to increase the operation load ratio of the hydrogen production apparatus to a first operation load ratio larger than the predetermined operation load ratio at first timing, and to decrease the operation load ratio of the hydrogen production apparatus to the predetermined operation load ratio from the first load operation ratio at second timing, wherein an increase in the operation load ratio at the first timing takes precedence over a decrease in the operation load ratio at the second timing.

A method for preparing biochar and hydrogen by utilizing anaerobic fermentation byproducts, the method including: (1) mixing a first straw, seeding sludge and distilled water, and then carrying out anaerobic fermentation to obtain a mixed product after fermentation; (2) performing separation on the mixed product to obtain a second straw and biogas slurry; and (3) carbonizing the second straw to obtain biochar, and collecting gas after a pressurized catalytic reaction on the biogas slurry to obtain hydrogen.

The invention relates to a device for splitting water into hydrogen and oxygen by thermolysis, that is, by decomposition at elevated temperature. This device comprises: a reactor (1) having a heating system (2), a first reactor outlet (3), a second reactor outlet (4), at least one water inlet (5) and at least one oxygen filter (6); at least one hydrogen filter (7); an oxygen extraction pump (8), a hydrogen extraction pump (9), at least one water injection pump (10); a hydrogen separation chamber (11) located outside the reactor (1) and containing the hydrogen filter(s) (7); a heat exchanger (15) comprising an inlet (31) and an outlet (13) for a first circuit and an inlet (17) and an outlet (19) for a second circuit. The particularity of such a device is that it comprises two further heat exchangers (16, 28) each comprising an inlet (14, 27) and an outlet (20, 29) for a first circuit and an inlet (22, 36) and an outlet (23, 34) for a second circuit and in that: the inlet (31) of the first circuit of a first heat exchanger (15) is connected to an external water inlet (12) via the water injection pump (10), the outlet (13) of the first circuit of the first heat exchanger (15) is connected to the inlet (14) of a first circuit of a second heat exchanger (16); the inlet (17) of the second circuit of the first heat exchanger (15) is connected to an outlet (18) of the hydrogen separation chamber (11), which is connected to the filter(s) (7) and the outlet (19) of the second circuit of the first heat exchanger (15) is a hydrogen outlet of the device. The invention also pertains to a process for splitting water into hydrogen using the above device.

An operation method is provided for a hydrogen production apparatus that is disposed in a hydrogen station and produces hydrogen gas to be supplied to a fuel cell vehicle (FCV) arriving at the hydrogen station. The operation method includes starting up a hydrogen production apparatus up to a first operation load ratio preset for a rated operation. The operation method includes increasing an operation load of the hydrogen production apparatus to a second operation load ratio, which is larger than the first operation load ratio, at first timing associated with an arrival of the FCV, and decreasing the operation load of the hydrogen production apparatus to a third operation load ratio, which is smaller than the second operation load ratio, at second timing associated with a completion of hydrogen filling into the FCV.

A process for carbonization and pyrolyzation of hydrocarbons containing, non-fluid materials is characterized by a continuous plug stream in shafts within a refractory structure. Within the shafts, the materials are heated by the hot inner surface of the shafts without air admitted to enter the shafts. Furthermore, the developing pyrolyze gas is led directly to combustion channels around the carbonization shafts within the refractory structure where a controlled amount of air or oxygen is added, partially combusting the gas, providing the heat for the process. Aim of the process is to convert different waste streams into reusable elements without CO2 emissions, to take away hazardous materials, to produce syngas, to extract hydrogen and to create a carbon rich residue fit for mining of, among others, metals, CaO and phosphor.

Raw synthesis gas (syngas) compositions are provided herein. The syngas compositions are generally formed from a partial oxidation reaction with a plastic feedstock within a PDX gasifier. The raw syngas compositions may by characterized by a desirable ratio of carbon monoxide to hydrogen and/or less impurities than syngas compositions formed using other feedstocks, such as natural gas or coal.

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.

A method for producing a synthetic fuel from hydrogen and carbon dioxide comprises extracting hydrogen molecules from hydrogen compounds in a hydrogen feedstock to produce a hydrogen-containing fluid stream; extracting carbon dioxide molecules from a dilute gaseous mixture in a carbon dioxide feedstock to produce a carbon dioxide containing fluid stream; and processing the hydrogen and carbon dioxide containing fluid streams to produce a synthetic fuel. At least some thermal energy and/or material used for at least one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams is obtained from thermal energy and/or material produced by another one of the steps of extracting hydrogen molecules, extracting carbon dioxide molecules, and processing the hydrogen and carbon dioxide containing fluid streams.

There are provided systems and methods for using fuel-rich partial oxidation to produce an end product from waste gases, such as flare gas. In an embodiment, the system and method use air-breathing piston engines and turbine engines for the fuel-rich partial oxidation of the flare gas to form synthesis gas, and reactors to convert the synthesis gas into the end product. In an embodiment the end product is methanol.

The invention concerns a process and apparatus for cracking ammonia in which heated ammonia gas at super-atmospheric pressure is partially cracked catalytically in an adiabatic reaction unit to produce partially cracked ammonia gas which is heated and fed to catalyst-containing reactor tubes in a furnace to cause cracking of further ammonia and produce a cracked gas comprising hydrogen gas, nitrogen gas and residual ammonia gas. At least some, preferably all, of the duty required to heat the partially cracked ammonia gas is provided by heat exchange with the cracked gas, enabling more efficient heat integration within the process.