Burner and process for producing synthesis gas
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsJoerg Ott, Veronika Gronemann, Maik Lehmann, Paul Manfred Krimlowski
Life of this patent
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Abstract
A burner for producing synthesis gas by partial oxidation of liquid or gaseous, carbon-containing fuels in the presence of an oxygen-containing oxidant and a moderator, which burner can be operated uncooled, i.e. without a fluid coolant being passed through the burner, is proposed. Steam or carbon dioxide or else mixtures of these materials are used as moderator. This is achieved by the feed channels being configured so that mixing of the fuel, the moderator and the oxidant occurs only outside the burner.
Claims11
The process for producing a synthesis gas comprising hydrogen and carbon oxides by partial oxidation of liquid or gaseous, carbon-containing fuel in the presence of an oxygen-containing oxidant and a moderator containing steam and/or carbon dioxide, comprising the following steps:
- (a) providing a burner, wherein the burner comprises:
- means for separately feeding in the carbon-containing fuel, the oxygen-containing oxidant and the moderator,
- a central first feed channel having a circular cross section,
- a second feed channel which coaxially and concentrically surrounds the first feed channel, forming an annular gap between an outer wall of the first feed channel and an inner wall of the second feed channel,
- a third feed channel which coaxially and concentrically surrounds the second feed channel, forming an annular gap between an outer wall of the second feed channel and an inner wall of the third feed channel, wherein an outer wall of the burner is formed by an outer wall of the third feed channel, and
- an absence of cooling fluid channel disposed outside of the third feed channel;
- (b) feeding of the oxygen-containing oxidant to the first feed channel, of the moderator to the second feed channel and of the liquid or gaseous, carbon-containing fuel to the third feed channel;
- (c) discharging, without having been mixing therein, the carbon-containing fuel, the oxygen-containing oxidant, and the moderator from the burner and introducing the carbon-containing fuel, the oxygen-containing oxidant, and the moderator into a reaction chamber downstream of the burner;
- (d) reacting the carbon-containing fuel with the oxygen-containing oxidant in the reaction chamber under conditions of partial oxidation;
- and
- (e) discharging a crude synthesis gas from the reaction chamber,
- wherein the outer wall of the third feed channel, the dividing wall between the second feed channel and the third feed channel and the dividing wall between the first feed channel and the second feed channel end in a common plane which runs perpendicularly to the longitudinal axis of the burner and forms the burner mouth,
- wherein the feed channels are configured so that mixing of the fuel, the moderator, and the oxidant occurs only outside the burner.
Dependencies are inferred from the claim text.