System for recovering inert gases from an ammonia synthesis loop and method thereof
AssigneeYara International Asa
InventorsWim VERSTEELE, Ivan DE WITTE
Life of this patent
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Abstract
A method for separating inert gases, from ammonia gas in an ammonia production plant, comprising the steps of: a) adjusting the temperature of a first gas comprising ammonia gas and the inert gases to a temperature equal to or lower than −20° C., thereby producing liquid ammonia and an inert gas depleted in ammonia; b) ejecting the inert gas stream produced in step a) to an inert gas station, using a gas stream from the ammonia production plant as the motive gas in a gas ejector, thereby ejecting a gas stream at the outlet of the ejector; and c) using the gas stream from the inert gas station, after its ejection in step b), as the component of a fuel.
Claims15
A method for separating an inert gas from ammonia gas in an ammonia production plant, and for subsequently using the inert gas as a component of a fuel, wherein the inert gas is a gas mixture comprising hydrogen gas and/or methane, which does not produce NOx gases upon oxidation, comprising the steps of:
- a) adjusting the temperature of a first gas comprising ammonia gas and the inert gas to a temperature equal to or lower than −20° C., thereby producing liquid ammonia and an inert gas depleted in ammonia;
- b) ejecting the inert gas produced in step a) to an inert gas station, using a gas stream from the ammonia production plant as the motive gas in a gas ejector, thereby ejecting a gas stream at the outlet of the ejector;
- and
- c) using the gas stream from the inert gas station, after its ejection in step b), as a component of a fuel.
A system for separating an inert gas from ammonia gas in an ammonia production plant, and for subsequently using the inert gas as a component of a fuel, wherein the inert gas is a gas mixture comprising hydrogen gas and/or methane, which does not produce NOx gases upon oxidation comprising:
- means for cooling a first gas comprising ammonia gas and the inert gas to a temperature equal to or lower −20° C., having an inlet in fluid communication with a gas comprising ammonia gas and the inert gas and an outlet for releasing an inert gas depleted in ammonia;
- an inert gas station for recovering inert gases, having an inlet and an outlet;
- a gas ejector having a first inlet in fluid communication with the outlet of the means for cooling, a second inlet in fluid communication with a gas stream from the ammonia production plant as the motive gas, and an outlet in fluid communication with the inlet of the inert gas station;
- and
- a unit operating through the consumption of a fuel, having an inlet for the fuel in fluid communication with the outlet of the inert gas station, and an outlet.
(canceled)
Dependencies are inferred from the claim text.