METHOD AND ARRANGEMENT FOR GENERATING OXYGEN AND NITRIC OXIDE
First Claim
1. Method of generating a gas comprising both oxygen and nitric oxide, said method comprising the steps of:
- guiding an oxygen comprising gas to a primary side of a dense membrane (42), wherein the dense membrane is permeable for oxygen but non-permeable for other gases,heating the membrane (42) to a temperature at which it is permeable for oxygen,creating a pressure difference between the primary side of the membrane (42) and a secondary side of the membrane (42), wherein a stream of oxygen is generated at the secondary side of the membrane (42) and a stream of oxygen depleted gas is generated at the primary side of the membrane (42),wherein said method further comprises the steps ofproviding a flow of nitrous oxide comprising gas,heating the nitrous oxide comprising gas to a temperature at which nitric oxide is generated, thereby using heat generated in the process of operating the membrane (42).
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Abstract
The invention relates to a Method of generating oxygen and nitric oxide. The method comprises the steps of: guiding an oxygen comprising gas to a primary side of a dense membrane (42), heating the membrane (42) to a temperature at which it is permeable for oxygen, creating a pressure difference between the primary side of the membrane (42) and a secondary side of the membrane (42), wherein a stream of oxygen is generated at the secondary side of the membrane (42) and a stream of oxygen depleted gas is generated at the primary side of the membrane (42). The method according to the invention further comprises the steps of: providing a flow of nitrous oxide comprising gas and heating the nitrous oxide comprising gas to a temperature at which nitric oxide is generated. Thereby, according to the invention, heat generated in the process of operating the membrane is used. According to the invention it is possible to generate both oxygen and nitric oxide in one device making use of several synergistic effects, thus being energy saving.
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Citations
15 Claims
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1. Method of generating a gas comprising both oxygen and nitric oxide, said method comprising the steps of:
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guiding an oxygen comprising gas to a primary side of a dense membrane (42), wherein the dense membrane is permeable for oxygen but non-permeable for other gases, heating the membrane (42) to a temperature at which it is permeable for oxygen, creating a pressure difference between the primary side of the membrane (42) and a secondary side of the membrane (42), wherein a stream of oxygen is generated at the secondary side of the membrane (42) and a stream of oxygen depleted gas is generated at the primary side of the membrane (42),wherein said method further comprises the steps of providing a flow of nitrous oxide comprising gas, heating the nitrous oxide comprising gas to a temperature at which nitric oxide is generated, thereby using heat generated in the process of operating the membrane (42). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Arrangement for generating a gas comprising both oxygen and nitric oxide, the arrangement (10) comprising
a source of oxygen comprising gas, a dense membrane (42) having a primary side and a secondary side, wherein the dense membrane is permeable for oxygen but non-permeable for other gases, a device for creating a pressure difference between the primary side and the secondary side of the membrane (42), and a device for heating the membrane (42), wherein the arrangement (10) further comprises a source of nitrous oxide comprising gas, and a device being designed for heating a flow of nitrous oxide comprising gas being egressed from the source of nitrous oxide comprising gas to a temperature, at which nitric oxide is generated, using heat generated in the process of operating the membrane (42).
Specification