C01B3/384

Apparatus and method for automatable start-up of a steam reformer arrangement into a normal operating state, and use and open-loop control/closed-loop control device and computer program product

A method can be utilized to startup into a normal operating state a steam reformer arrangement for the production of hydrogen, methanol, or ammonia. A plurality of burners that are coupled to at least one reactor having reformer tubes may be controlled and regulated. In particular, startup may be performed out and regulated in an automated manner by the burners ensuring normal operation, in particular non-startup burners, being ignited indirectly as a function of temperature by means of burners provided specifically for startup, in particular pilot burners and startup burners, as a function of automatically evaluated flame monitoring at least at the pilot burners. This method provides time savings and savings of outlay in terms of personnel and also high operational reliability.

REACTOR

An end surface of each first side wall, an end surface of each first middle wall, and an end surface of each first end wall are joined to an adjacent second structure by diffusion bonding, an end surface of each second side wall, an end surface of each second middle wall, and an end surface of each second end wall are joined to an adjacent first structure or a lid structure by diffusion bonding, a thickness of each first side wall is greater than or equal to a thickness of each first middle wall, and a thickness of each second side wall is greater than or equal to a thickness of each second middle wall.

REACTOR

A reactor includes: a main reactor core including main reaction flow channels through which the raw material fluid flows, and main temperature control flow channels through which the heat medium flows along a flow direction of the raw material fluid flowing in the main reaction flow channel; and a pre-reactor core including pre-reaction flow channels of which an outlet side connects with an inlet side of the main reaction flow channels and through which the raw material fluid flows, and pre-temperature control flow channels of which an inlet side connects with an outlet side of the main reaction flow channels and through which the product serving as the heat medium flows along a flow direction of the raw material fluid flowing in the pre-reaction flow channel.

Method and system for production of hydrogen rich gas mixtures

The present invention relates to a process for producing a hydrogen containing gas mixture comprising the following steps: (i) providing a preheated mixture comprising a fossil fuel, preferably methane, and steam, (ii) conducting an adiabatic reaction between the fossil fuel and the steam, in the presence of a catalyst, wherein a first reaction product mixture is formed comprising methane, hydrogen and carbon dioxide, and (iii) conducting an oxygen-assisted reforming reaction in the presence of a catalyst between said first reaction product mixture and an oxygen comprising stream, wherein the oxygen comprising stream comprises at least 40 vol % oxygen, forming a second reaction product mixture comprising hydrogen and carbon monoxide. The invention also relates to a system suitable for hydrogen production from a hydrocarbon feed according to the present invention.

Conversion of greenhouse gases by dry reforming
09932230 · 2018-04-03 · ·

A method for conversion of greenhouse gases comprises: introducing a flow of a dehumidified gaseous source of carbon dioxide into a reaction vessel; introducing a flow of a dehumidified gaseous source of methane into the reaction vessel; and irradiating catalytic material in the reaction vessel with microwave energy. The irradiated catalytic material is heated and catalyzes an endothermic reaction of carbon dioxide and methane that produces hydrogen and carbon monoxide. At least a portion of heat required to maintain a temperature within the reaction vessel is supplied by the microwave energy. A mixture that includes carbon monoxide and hydrogen can undergo catalyzed reactions producing multiple-carbon reaction products in a lower-temperature portion of the reaction vessel.

Hybrid reforming system using carbon dioxide plasma and catalyst

The present invention provides a hybrid reforming system for producing syngas through a reforming reaction between carbon dioxide plasma and a hydrocarbon material, the system comprising: a carbon dioxide feeder (110) which feeds carbon dioxide; a hydrocarbon material feeder (120) which feeds the hydrocarbon material; a plasma reformer (200) which respectively receives carbon dioxide and the hydrocarbon material from the carbon dioxide feeder (110) and the hydrocarbon material feeder (120), and produces primary syngas through a reforming reaction while producing the carbon dioxide plasma using electromagnetic waves; a wet carbon-refining device (130) which is arranged at a gas exhaust end of the plasma reformer (200) and filters and refines carbon contained in the primary syngas; and a catalyst dry-reformer (140) which is arranged at a gas exhaust end of the wet carbon-refining device (130) and produces secondary syngas by making the refined syngas undergo a catalyst dry-reforming reaction.

PROCESS FOR PRODUCING AMMONIA SYNTHESIS GAS

A process for producing ammonia synthesis gas from the reforming of hydrocarbons with steam in a primary reformer (1) equipped with a plurality of externally heated catalytic tubes and then together with air in a secondary reformer (2) is characterized in that the reaction of said hydrocarbons with said steam in said primary reformer (1) is performed at an operating pressure of more than 35 bar in the catalytic tubes, in that air is added to said secondary reformer in excess over the nitrogen amount required for ammonia synthesis and in that the excess of nitrogen is removed downstream the secondary reformer preferably by cryogenic separation or by molecular sieves of the TAS or PSA type. This process allows to obtain high synthesis gas production capacities and lower investment and energy costs.

Method for producing hydrogen-containing gaseous fuel and thermal gas-generator plant

The invention relates to a method for producing hydrocarbon-containing gaseous fuel comprises at least three stages. In the first stage water is entered for heating and water steam forming. In the second stage hydrocarbon component is entered and mixed with water steam by injecting. The mixture is heated and directed to subsequent stages to additional heating for fuel producing. Turbo generator is made as two cylinder tubes, divided on isolated sections. The first section is made with induction heat source for system start-up, the second section is made with injector type mixer. The inner tube cavity forms the firing chamber. In technological cylinder multistage components and mixture heated and additional heating in subsequent sections are realized until forming of hydrogen-containing gaseous fuel. Burning system, worker burner, start-up burner are installed on the firing chamber inlet. Working torch forming element is installed on the firing chamber outlet.

Method and system for the manufacture of methane as well as heat and electricity by hydrogasification of biomass
20180066199 · 2018-03-08 ·

The method for the manufacture of bio-methane and eco-methane as well as electric and thermal energy according to the present invention consists in hydrogasification of a mixture of bio-carbon and fossil carbon in a carbon hydrogasification reactor using bio-hydrogen obtained in a bio-hydrogen production reactor from a mixture of bio-methane and steam in the presence of a catalyst and with a CO.sub.2 acceptor being a mixture of magnesium and calcium oxides. The raw gas formed, after purification, is subjected to separation into hydrogen and methane sent to a hydrogen production process and to feed a power generation unit. Spent CO.sub.2 acceptor is subjected to calcination and the CO.sub.2 produced in the calcination process is directed to a CO.sub.2 sequestration process. The system for the manufacture of methane and energy consists of a first reactor (1) for the hydrogasification of a mixture of bio-carbon and carbon prepared by a carbon feed preparation unit (25) connected to a biomass pyrolysis apparatus (22) and a carbon conveyor (24) and fed by a carbon mixture conveyor (26) to the first reactor (1) connected to a vapour and gas separator (15), said separator having a hydrogen outlet connected to the first reactor (1) and a methane outlet connected to a third reactor (3) and the power generation unit (5). Additionally, the third reactor (3) has a CO.sub.2 acceptor inlet connected to a second reactor (2) for the calcination of the spent CO.sub.2 acceptor and a spent CO.sub.2 outlet at the third reactor (3) connected via a conveyor (14) to the second reactor (2). A CO.sub.2 pipeline (10c) is connected to a CO.sub.2 sequestration system, whereas another CO.sub.2 pipeline (10d) for the regenerating CO.sub.2 stream exiting the second reactor (2) is connected via a heat exchanger (8) and a preheater (9) of that stream, connected via a pipeline (10) to the second reactor (2).

Furnace with reactor tubes heatable electrically and by means of combustion fuel for steam reforming a feedstock containing hydrocarbon

A furnace for steam reforming a feed stream containing hydrocarbon, preferably methane, having: a combustion chamber, a plurality of reactor tubes arranged in the combustion chamber for accommodating a catalyst and for passing the feed stream through the reactor tubes, and at least one burner which is configured to burn a combustion fuel in the combustion chamber to heat the reactor tubes. In addition at least one voltage source is provided which is connected to the plurality of reactor tubes in such a manner that in each case an electric current which heats the reactor tubes to heat the feedstock is generable in the reactor tubes.