Haldor Topsoe A/s

Haldor Topse A/s

Christian Wix

Hassan Modarresi

Michael Boe

Ib Dybkjaer

Rasmus Trane-Restrup

Ib Dybkjær

Ib (deceased) Dybkjaer

The present disclosure relates to a process plant and a process for production of a hydrogen rich gas, comprising the steps of (a) directing an amount of a synthesis gas comprising at least 15%, 50% or 80% on dry basis of CO and Hin combination, a gas comprising steam, and a recycled intermediate product gas to be combined into a first reactor feed gas, (b) directing said first reactor feed gas to contact a first material catalytically active in water gas shift reaction, producing an intermediate product gas, (c) splitting said intermediate product gas in the recycled intermediate product gas and a remaining intermediate product gas, (d) combining said remaining intermediate product gas with a further amount of synthesis gas forming a second reactor feed gas, (e) directing said second reactor feed gas to contact a second material catalytically active in the water gas shift reaction, producing a product gas, characterized in the HO:CO ratio in said first reactor feed gas being from 0.5 to 2.0 and the HO:CO ratio in said second reactor feed gas being from 0.5 to 2.0. with the associated benefit of distributing the heat development and thus reducing the maximum temperature in the reactors by limiting the extent of reaction of the reacting mixture, and thereby reducing the amount of steam required for limiting methanation.

Method for production of a hydrogen rich gas

The invention relates to a boiling water reactor for an exothermal reaction. The reactor comprises reactant by-pass inserts arranged on top of the upper tube sheet to provide for a catalyst layer on top of the upper tube sheet and also a cooling stream of reactant by-passing the upper layer of catalyst and cooling the upper tube sheet from the temperature rise due to the exothermal reaction taking place in the upper layer of catalyst.

Boiling water reactor

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

Process for the production of a synthesis gas for use in the production of chemical compounds from a hydrocarbon feed stock containing higher hydrocarbons comprising the steps of: (a) in a pre-reforming stage pre-reforming the feed stock with steam to a pre-reformed gas containing methane, hydrogen, carbon monoxide and carbon dioxide; and (b) cooling the pre-reformed gas to below its dewpoint and removing condensed water; and (c) reducing the amount of carbon dioxide the in the pre-reformed gas from step (b) to obtain a module of (H&#x2212;CO)/(CO+CO) of between 1.0 and 3.8 in the pre-reformed gas.

Process for the production of synthesis gas

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

Process for production of a higher alcohol product from an alcohol synthesis gas comprising hydrogen, carbon monoxide, carbon dioxide, and lower alcohols, comprising a carbon dioxide and optional alkane removal step. Use a stripper using synthesis gas as stripping gas to purify the liquid phase containing the lower and highers alcohols, in order to strip the lower alcohol from the alcohol stream. Synthesis gas used for stripping is used as recycle stream in the reactor.

Process for the preparation of higher alcohols

Process for the catalytic production of alcohol products, wherein by-products comprising ketone, aldehyde and ester compounds contained in the alcohol product are subjected to hydrogenation with a hydrogen-containing purge gas.

Process for synthesis of alcohols

Process for the production of substitute natural gas (SNG) by the methanation of a synthesis gas derived from the gasification of a carbonaceous material together with water gas shift and carbon dioxide removal thereby producing a synthesis gas with a molar ratio (H&#x2212;CO)/(CO+CO) greater than 3.00. At the same time, a gas with a molar ratio (H&#x2212;CO)/(CO+CO) lower than 3.00 is added to the methanation section. The final product (SNG) is of constant high quality without excess of carbon dioxide and hydrogen.

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Nærum, Denmark

Christian Wix