Topsoe A/S

A process to control the outlet temperature of a heat exchange reformer in the production of synthesis gas wherein a first stream of feed gas is directed to a first reforming section and a second stream of feed gas is directed to said heat exchange reformer, wherein the outlet stream of said reforming section is divided into at least a first and a second sub-streams. The first sub-stream is directed into said heat exchange reformer to provide heat for the reforming section and the outlet stream of the heat exchange reformer is directed to a first waste heat boiler. The second sub-stream bypasses the heat exchange reformer and is directed to a second waste heat boiler for heat recovery and high pressure steam production. The outlet temperature of said heat exchange reformer is adjusted in this manner.

A process is provided for producing a hydrocarbon product stream in a hydrocarbon plant. The hydrocarbon plant comprises a reverse water gas shift (RWGS) unit (I), and a second feed comprising carbon dioxide to said reverse water gas shift (RWGS) unit (I). The second feed is a process off-gas containing less than 75% CO 2 and is the sole carbon dioxide-containing feed to said reverse water gas shift (RWGS) unit (I).

A structured body for heating system for carrying out heating of a pressurized feed gas is provided, where the heat is provided by resistance heating by means of electrical power.

The present invention relates to a more efficient, sustainable system and process, wherein an off-gas comprising unsaturated hydrocarbons from a synthesis stage is recycled to the syngas stage through an off-gas conversion stage comprising hydrogenation of unsaturated hydrocarbons in said off-gas. The exotherm across the adiabatic hydrogenation unit is controlled efficiently by using dilution gas.

A process and reaction system for preparation of methanol. A fresh methanol synthesis gas stream is introduced in a first methanol reaction unit in the presence of a methanol catalyst, resulting in a first effluent stream containing methanol and unconverted synthesis gas. A recycle gas stream containing the unconverted methanol synthesis gas contained in the first effluent stream and unconverted methanol synthesis gas from a second methanol reaction unit is introduced and reacted in the second methanol reaction unit in the presence of a methanol catalyst. The first effluent stream and a part of a second effluent stream containing methanol and the unconverted methanol synthesis gas from the second methanol reaction unit are combined, cooled, and separated into a methanol-containing liquid stream and the recycle stream. The remaining part of the second effluent stream is withdrawn as a purge gas stream prior to combining the first and second effluent streams.

A system is described for providing a hydrocarbon product stream. An electrolysis section provides a syngas stream from a first feed comprising CO 2 and a second feed comprising H 2 O, which is then passed to an F-T section where it is converted to a hydrocarbon product stream and a tail gas stream. An electrical steam reformer section said tail gas stream and convert it to a second syngas stream, which is then recycled upstream the FT section. A process is also provided for converting a first feed comprising CO 2 and a second feed comprising H 2 O to a first hydrocarbon product stream in a system according to the invention. The system of the invention can be combined with an upgrading section, in a gas-to-liquid plant.

There is provided a process for the at least partial condensation of an oxygenate mixture the process comprising the steps of: (a) providing a vapour phase oxygenate mixture obtained from fragmentation of an aqueous solution of carbohydrates; (b) performing on the vapour phase oxygenate mixture an at least partial condensation to provide a condensate; and (c) combining an antifoaming agent and the condensate.

The invention relates to a process for hydrotreating a liquid oil stream such as pyrolysis oil stream by, in continuous operation, reacting the liquid oil stream with hydrogen in the presence of a nickel-molybdenum (Ni—Mo) based catalyst at a temperature of 20-240° C., a pressure of 100-200 barg and a liquid hourly space velocity (LHSV) of 0.1-1.1 h −1 , and a hydrogen to liquid oil ratio, defined as the volume ratio of hydrogen to the flow of the liquid oil stream, of 1000-6000 NL/L thereby forming a stabilized liquid oil stream.

Process and plant for producing a synthesis gas by catalytic steam reforming of a hydrocarbon feedstock in a steam reforming unit, wherein water is removed from the synthesis gas as a process condensate, wherein boiler feed water is introduced in the process, and wherein the process or plant produces at least two separate steam streams: a pure steam which is generated from at least a portion of the boiler feed water by the cooling of synthesis gas, and a process steam which is generated by evaporating at least a portion of the process condensate by using synthesis gas, optionally together with pure steam and/or flue gas from the steam reforming unit.

A broad aspect of the present disclosure relates to a process for conversion of a feedstock containing at least 5 wt % aromatics, originating from thermal decomposition of solids, comprising the steps of directing the feedstock to contact a material catalytically active in hydrodeoxygenation under hydrodeoxygenation conditions in the presence of dihydrogen, to provide a deoxygenated intermediate, directing at least an amount of the deoxygenated intermediate to contact a material catalytically active in hydrodearomatization under hydrodearomatization conditions in the presence of dihydrogen, to provide an dearomatized intermediate. This has the associated benefit of converting a feedstock such as pyrolysis oil to a product or an intermediate compatible with diesel fuel requirements with a minimal yield loss.