Haldor Topsoe A/s

Topsoe Fuel Cell A/s

Haldor Topse A/s

Topsoe A/s

Hassan Modarresi

Christian Wix

Per Juul Dahl

Max Thorhauge

A reactor layout for a process of methanol production from low quality synthesis gas, in which relatively smaller adiabatic reactors can be operated more efficiently, some of the inherent disadvantages of adiabatic reactors for methanol production are avoided. This is done by controlling the outlet temperature in the pre-converter by rapid adjustment of the recycle gas, i.e. by manipulating the gas hourly space velocity in the pre-converter.

Reactor layout for methanol production from low quality synthesis gas

A fuel cell reactor, preferably a solid oxide fuel cell (SOFC) reactor, for performing direct conversion of a hydrocarbon-containing gas to a higher hydrocarbons product is confined by walls, where reactants are flown in the anode compartments and air is introduced to the cathode compartments, and where oxygen is transferred from one side of the walls to the other side to promote or inhibit a chemical reaction. The process for direct conversion of a hydrocarbon-containing gas to a higher hydrocarbons product takes place in the anode compartment of the reactor, in which produced hydrogen, limiting the conversion to the equilibrium, is reacted in situ with oxygen ions transferred from the cathode compartment to produce steam, thereby removing the equilibrium-limiting hydrogen from the reaction.

Fuel cell reactor and a process for direct conversion of a hydrocarbon-containing gas to a higher hydrocarbons product

In a novel process for methanol production from low quality synthesis gas, in which relatively smaller adiabatic reactors can be operated more efficiently, some of the inherent disadvantages of adiabatic reactors for methanol production are avoided. This is done by controlling the outlet temperature in the pre-converter by rapid adjustment of the recycle gas, i.e. by manipulating the gas hourly space velocity in the pre-converter.

Process for methanol production from low quality synthesis gas

A process layout for large scale methanol synthesis comprises one or more boiling water reactors and one or more radial flow reactors in series, the boiling water reactor(s) being fed with approximately fresh make-up syngas. The methanol synthesis loop comprises a make-up gas compressor K, a recycle gas compressor K, two or more boiling water converters for methanol synthesis (A, A, . . . ), a radial flow converter (B) for methanol synthesis, a steam drum (V), a high pressure separator (V), a low pressure separator (V), feed effluent heat exchangers (Eand E), a wash column (C), an air cooler (E) and a water cooler (E).

Methanol synthesis process layout for large production capacity

In a process for methanol production from synthesis gas, which comprises the steps of providing a make-up gas containing hydrogen and carbon monoxide, in which the content of carbon dioxide is less than 0.1 mole %, mixing the make-up gas with a hydrogen-rich recycle gas and passing the gas mixture to a methanol synthesis reactor, optionally via a sulfur guard, and subjecting the effluent from the synthesis reactor to a separation step, thereby providing crude methanol and the hydrogen-rich recycle gas, the customary addition of carbon dioxide to the make-up gas is replaced by addition of water in an amount of 0.1 to 5 mole %. This way, a COcompressor is saved, and the amount of poisonous sulfur in the make-up gas is markedly reduced.

Method for methanol synthesis

In a process for the production of higher alcohols, i.e. Calcohols, from syngas, the syngas is first reacted in a heterogeneous alcohol pre-converter (A) using an alcohol synthesis catalyst, whereby methanol as the main product in a concentration corresponding to or close to the equilibrium concentration is produced. Then the effluent from the pre-converter is mixed with unconverted wet recycle gas and reacted in a heterogeneous reactor for higher alcohols synthesis (B) containing a higher alcohols synthesis catalyst, and finally the effluent from the reactor for higher alcohols synthesis is separated into (i) unconverted syngas, which is recycled to the higher alcohols synthesis reactor, (ii) methanol and light alcohols, which are recycled to the higher alcohols synthesis reactor, and (iii) the final product consisting of higher alcohols.

Process and apparatus for the production of higher alcohols

In a process for the preparation of methanolin parallel reactors, comprising the steps of (a) reacting carbon oxides and hydrogen in the presence of a methanol catalyst in a first methanol reactor to obtain a first methanol-containing effluent, (b) introducing and reacting unconverted synthesis gas in a second methanol reactor in the presence of a methanol catalyst to obtain a second methanol-containing effluent, the first methanol reactor and the second methanol reactor being connected in parallel, (c) combining the first and second effluent, and (d) cooling and separating the combined and cooled effluent into a methanol-containing liquid phase and unconverted synthesis gas, the methanol catalyst in the first methanol reactor is indirectly cooled by boiling water and the methanol catalyst in the second methanol reactor is either directly or indirectly cooled by the unconverted synthesis gas prior to conversion into the second effluent.

Process for the preparation of methanol in parallel reactors

A gas generator and process for converting a fuel into an oxygen-depleted gas and/or hydrogen-enriched gas. The gas generator is preferably used for generating protection gas or reducing gas for start up, shut down or emergency shut down of a SOFC or SOEC. The process for converting fuel into oxygen-depleted gas and/or a hydrogen-enriched gas includes combusting the fuel in a primary catalytic burner with an oxygen-containing gas to produce a flue gas with oxygen, combusting or partially oxidizing the flue gas comprising oxygen with excess fuel in a secondary catalytic burner to produce a gas with hydrogen and carbon monoxide, and reducing the trace amounts of oxygen from the gas comprising traces of oxygen and obtaining an oxygen-depleted gas, or reducing the carbon monoxide present in the gas by conversion to carbon dioxide or methane to obtain a hydrogen-enriched gas.

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Lyngby, Denmark

Hassan Modarresi