Den Norske Stats Oljeselskap A.s.

Statoil Asa

Roger Hansen

Erling Rytter

Dag Schanke

Ola Olsvik

Jostein Sogge

Karina Heitnes Hofstad

Margrete H Wesenberg

Alf S Martinsen

Terje M Halmo

Bjorn Jarle Veland

Arne Grislingås

A method of increasing the production in an existing process plant for converting natural gas into a product, where the natural gas is first converted to a synthesis gas in a synthesis gas section, the synthesis gas is brought to reaction in a reactor for synthesis of the product, where non-converted synthesis gas and product are separated into two streams, where a product-rich stream is taken off the process, while a product-poor stream is re-circulated back as feed to the reactor together with fresh synthesis gas, and where part of the re-circulating stream is taken off the re-circulation loop as a purge gas, where the purge gas is separated into hydrogen-rich and hydrogen-poor streams, where hydrogen-rich streams are introduced in stages of the process where addition of hydrogen is desirable, and where the residual thermal value of the hydrogen-poor stream may be used for heating prior to the stream being discharged, wherein the synthesis gas from the synthesis gas section receives a hydrogen-rich stream from the separated purge gas, and that this hydrogen enriched synthesis gas is passed through a new flow reactor for production of product, and also a unit for separating a product-rich stream that is taken off, and a product-poor stream used as feed to the original reactor, and that the product-poor stream, which is used as feed to the original reactor, receives additional synthesis gas produced in a separate secondary synthesis gas line, is described. Additionally, a process plant for carrying out the method is described.

Method for increasing the production in an existing processing plant and a processing plant

The present invention comprises a method for production of a CO-rich gas stream and a H-rich gas stream, the method comprising the following steps: a) natural gas and water are fed to a reforming reactor and are converted to synthesis gas under supply of a O-containing gas: b) the gas stream from a) is shifted, whereby the content of CO is reduced and the amounts of COand Hare increased by reaction of HO; c) the gas stream from b) is separated in a separation unit into a CO-rich and a H-rich gas stream, respectively. The invention also concerns the use of a CO-rich gas stream for injection into marine formations, and the use of a H-rich gas stream for hydrogenation, as a source of energy/fuel in fuel cells or for production of electricity.

Process for preparing a H2-rich gas and a CO2-rich gas at high pressure

A method is described for conversion of natural gas or other fossil fuels to higher hydrocarbons, comprising the following steps: a) reaction of natural gas with steam and oxygenic gas in at least one reforming zone in order to produce a synthesis gas consisting primarily of hydrogen and CO, in addition to some carbon dioxide; b) passing said synthesis gas to a Fisher-Tropsch reactor in order to produce a crude synthesis stream consisting of lower hydrocarbons, water and non-converted synthesis gas; c) separation of said crude synthesis stream in a recovery zone, into a crude product stream mainly containing heavier hydrocarbons, a water stream and a tail gas stream mainly containing the remaining constituents; which is charaterized in that the method also comprises the following steps; d) stream reformation of at least part of the tail gas in a separate steam reformer; e) introduction of the reformed tail gas into the gas stream before this is led into the Fischer-Tropsch reactor.

Optimum integration of Fischer-Tropsch synthesis and syngas production

The present invention relates to a process and an integrated plant to be used in the process for the preparation of synthetic fuel (synfuel) and production of electrical energy. A part of the energy produced is used for the operation of the energy requiring steps of the process, whereas the residual part is exported for other purposes. The warm exhaust gas from the part of the plant producing electrical energy is fed to a preheating step for natural gas being used as a starting material for the preparation of synfuel.

Process and an integrated plant for the production of synfuel and electrical power

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Trondheim, Norway

Roger Hansen