Method for the synthesis of nitrogen oxides and nitric acid in a thermal reactor
AssigneeNitrocapt AB
InventorsGustaf Forsberg, Peter Baeling, Gerard Jacobus Van Rooij
Life of this patent
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Abstract
There is provided a method for deriving a value for a first syntax element, Syntax_A. The method comprises determining whether Syntax_A is present in a bitstream. The method comprises, as a result of determining that Syntax_A is not present in the bitstream, deriving the value for Syntax_A to be equal to a first value, B, if a first condition is satisfied, or deriving the value for Syntax_A to be equal to a second value, C, if a second condition is satisfied.
Claims14
A method for the synthesis of nitrogen oxides (NOx) comprising the steps of:
- providing a gas mixture comprising oxygen and nitrogen;
- and
- heating the gas mixture to a temperature of at least 2300 K at a pressure of 10-100 bar in a thermal reactor forming a gas mixture comprising NOx;
- wherein the method includes a step of quenching the gas mixture comprising NOx, and the quenching is conducted by bringing the gas mixture in contact with a quenching medium being water or a gas mixture comprising oxygen and nitrogen.
A method for the synthesis of nitric acid (HNO3) comprising the following steps:
- providing a gas mixture comprising oxygen and nitrogen;
- heating the gas mixture to a temperature of at least 2300 K at a pressure of 10-100 bar in a thermal reactor forming a gas mixture comprising NOx;
- cooling the gas mixture in a cooling step forming a cooled gas mixture comprising NO2, wherein the cooling step comprises quenching the gas mixture comprising NOx, and the quenching is conducted by bringing the gas mixture in contact with a quenching medium being water or a gas mixture comprising oxygen and nitrogen;
- optionally, depressurizing the cooled gas mixture comprising NO2;
- wet scrubbing the gas mixture comprising NO2 thereby forming HNO3;
- and
- optionally, recirculating unreacted exhaust gas from the wet scrubbing to the thermal reactor.
Dependencies are inferred from the claim text.