Haldor Topsoe A/s

Amminex Emissions Technology A/s

Haldor Topse A/s

Jacob Hjerrild Zeuthen

Niklas Bengt Jakobsson

Rasmus Trane-Restrup

Kresten Egeblad

Tue Johannessen

Ulrich Joachim Quaade

Henning Schmidt

Johnny Johansen

Troels Dahlgaard Stummann

Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial COoff-gas by heating the feed gas, optionally removing siloxanes and silanols from the heated feed gas, optionally removing part of the sulfur-containing compounds in the heated feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic conversion of any or all of the volatile organic compounds (VOCs) present in the gas, including sulfur-containing compounds, chlorine-containing compounds and any of the reactants injected, in at least one suitable reactor, and cleaning the resulting oxygen-depleted gas. The reactants to be injected comprise one or more of H, CO, ammonia, urea, methanol, ethanol and dimethyl ether (DME).

Method for the removal of oxygen from an industrial gas feed

Oxygen is removed from a gas feed such as a landfill gas, a digester gas or an industrial COoff-gas by removing sulfur-containing compounds and siloxanes from the feed gas, heating the feed gas, injecting one or more reactants for oxygen conversion into the heated feed gas, carrying out a selective catalytic oxygen conversion in at least onesuitable reactor and cleaning the resulting oxygen-depleted gas. The reactants to be injected comprise one or more of H, CO, ammonia, urea, methanol, ethanol and dimethylether (DME).

Method for the removal of oxygen from an industrial gas

A method for the purification of a raw gas stream by selective catalytic oxidation, in which organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds are selectively oxidized without substantially oxidizing the lower hydrocarbons and the sulfur containing compounds present in the gas to sulfur trioxide and excess of oxygen is removed by oxidation of lower alcohols, ethers or hydrogen added to the raw gas stream upstream the catalytic oxidation.

Process for the purifying of a raw gas stream containing mainly C1-C5 hydrocarbons and carbon dioxide, and impurities of organic and inorganic sulfur compounds, halogenated and non-halogenated volatile organic compounds and oxygen

A method for controlling the effective heat transfer from a storage unit (). During gas release from storage material () in the storage unit the storage material is heated by a heater (). During re-saturation of the storage material () with gas the heater is off. Controlling of the effective heat transfer from the storage unit () is performed, during gas release, by ceasing convection of a convection gas and, during re-saturation, by performing or enabling convection of a convection gas to cool the storage unit ().

Method and device for controlling effective heat transfer in a solid gas storage system

A method is provided for estimating the degree of saturation (S) of a reversible solid ammonia storage material () in a storage unit (). The storage unit () is equipped with a heater () to release ammonia and a connected tube () for ammonia flow. The initial temperature (T) is measured with a sensor () in or around the storage unit () before any heating is initiated. Heating is initiated while recording the active time of heating (t) or the amount of energy (Q) released by the heater. The desorption pressure created by solid storage material in the storage unit () is measured via a pressure sensor () in fluid communication with the storage unit (). The time (t), or the heat (Q) where the pressure reaches a certain target pressure (P) is recorded. The values of the target-pressure time (t), or the target-pressure heat (Q), and the initial temperature (T) are used to compute an approximate degree of saturation (S).

Growing community of inventors

Birkerød, Denmark

Jacob Hjerrild Zeuthen