Method and system combination for the preparation of urea
OwnerHelmut Fritz, Ernst HAIDEGGER +2inventors
InventorsHELMUT FRITZ, Ernst HAIDEGGER, Rainer KEMPER, Heinz ZIMMERMANN
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Abstract
The invention relates to a process (100), in which, with the inclusion of an air-separation method (10), an oxygen-rich substance flow (b) is formed, which is subjected with a methane-rich substance flow (e) to a method for oxidative coupling of methane (20). From a product flow (e) of the method for oxidative coupling of methane (20), a carbon-dioxide-rich substance flow (i) is formed and subjected to a urea-synthesis method (50). A corresponding combined plant also forms the subject matter of the invention.
Claims14
A process, in which, with the inclusion of an air-separation method, an oxygen-rich substance flow is formed, which is subjected, with a methane-rich substance flow, to a method for oxidative coupling of methane, characterised in that a carbon-dioxide-rich substance flow is formed from a product flow of the method for oxidative coupling of methane and subjected to a urea-synthesis method.
A combined plant which comprises an air-separation plant and at least one reactor equipped for the implementation of a method for oxidative coupling of methane, wherein the combined plant comprises means, which are equipped, with the inclusion of an air-separation method implemented in the air-separation plant, to form an oxygen-rich substance flow and to subject the latter, with a methane-rich substance flow, to a method for oxidative coupling of methane in the at least one reactor, characterised in that means are provided which are equipped to form a carbon-dioxide-rich substance flow from a product flow of the method for oxidative coupling of methane and to subject it to a urea-synthesis method.
Dependencies are inferred from the claim text.