patents of nitrogen generator
patents of nitrogen generator
patents of nitrogen generator
A portable cryogenic nitrogen generator consists of an air preparation unit and a cryogenic distillation unit mounted inside separate standard-sized ISO containers that can be easily shipped to a drilling site and efficiently and quickly assembled into an operative state. The containers can be connected together at anchor points on the housings of both containers, making the nitrogen generator assembly more stable. The air preparation unit includes an absorption device and optionally includes one or a plurality of air compressor units. The cryogenic distillation unit includes a distillation column and associated heat exchangers. The air preparation and cryogenic distillation units connect through apertures in their respective containers and operate while being mounted in the containers.
1. A gas separation device comprising a first container defining a first major axis and comprising a frame, an absorber assembly mounted in the first container so as to be surrounded by the frame, a second container defining a second major axis and comprising a second frame, a cryogenic distillation device mounted in the second container so as to be surrounded by the frame, the first and second containers including first and second apertures, respectively, the absorber assembly and the cryogenic distillation device being configured to be connected through the first and second apertures and operate while being mounted in the first and second containers.
2. The separation device according to claim 1, wherein the first and second frames are configured to conform to at least one standard ISO container size.
3. The separation device according to claim 2, wherein the second container is about 40 feet long.
4. The separation device according to claim 1, wherein each of the first and second containers includes at least four anchoring points, the anchoring points being arranged such that at least four of the anchoring points on the first container are aligned with at least four of the anchoring points on the second container when the first and second containers abut each other with the respective major axes extending perpendicularly to each other, the at least four anchoring points extending around the periphery of the first and second apertures.
5. The separation device according to claim 4, wherein the anchoring points are arranged such that four anchoring points on each of the first and second containers can be connected to each other when the major axis of the first container extends generally horizontally and the major axis of the second container extends generally vertically.
6. The separation device according to claim 1, wherein the absorption assembly includes at least a first pipe terminating adjacent the first aperture, and the cryogenic distillation assembly includes at least a second pipe terminating adjacent the second aperture.
7. The separation device according to claim 6, wherein the terminal ends of the first and second pipes can be connected together when the first and second apertures are juxtaposed to each other.
8. The separation device according to claim 1 additionally comprising a drilling rig, an output of the separation device being connected to the drilling rig.
9. The separation device according to claim 1, wherein the absorption device and the cryogenic distillation device are configured to separate nitrogen gas from atmospheric air.
10. A nitrogen gas generator configured to produce gas comprising more than 95 percent nitrogen through separation of the nitrogen from atmospheric air, the generator comprising an absorption unit, a cryogenic distillation unit, a first shipping container configured to conform to a standard ISO container size, the absorption unit being rigidly affixed to an interior of the first shipping container, a second shipping container configured to conform to at least one standard ISO container size, the cryogenic distillation unit being rigidly affixed to an interior of the second shipping container, the absorption unit and the cryogenic distillation unit being configured to be connected through at least one pipe while remaining rigidly affixed to the respective containers during operation.
11. The generator according to claim 10 additionally comprising an air compressor rigidly affixed to the interior of the first shipping container.
12. The generator according to claim 10, wherein the first and second shipping containers include first and second apertures, respectively, and wherein the at least one pipe connects the absorption unit and the cryogenic distillation unit through the first and second apertures.
13. The generator according to claim 10, wherein the second container is about 40 feet long.
14. The generator according to claim 10, wherein each of the first and second containers comprises a plurality of anchoring points extending around the periphery of the first and second apertures, respectively.
15. The nitrogen generatoraccording to claim 14, wherein the anchoring points are configured to allow the first and second containers to be connected to each other such that the first container extends generally horizontally, and the second container extends generally vertically.
16. The generator according to claim 10, wherein the absorption unit is configured to separate at least carbon dioxide and water vapor from compressed air, thereby producing pre-purified air, the cryogenic distillation unit being configured to separate oxygen from the pre-purified air, thereby producing the gas containing more than 99 percent nitrogen gas.
17. The generator according to claim 10, wherein a gas output of the generator is connected to a drilling rig.
18. The generator according to claim 17, wherein the drilling rig is configured to drill a well into the earth.
19. The generator according to claim 18, wherein the absorption unit and the cryogenic distillation unit are configured to supply a flow rate of the gas containing more than 99 percent nitrogen, sufficient for moving drill cuttings upwardly from a downhole region of a well.
20. The nitogen generator according to claim 12, wherein the first and second shipping containers include third and fourth apertures, respectively, each of the third and fourth apertures including at least one panel movable between open and closed positions.
21. A method for separating gas with an absorption unit and a cryogenic distillation unit, each of which are mounted in respective shipping containers, the shipping container for the cryogenic distillation unit being an oblong shipping container, the method comprising arranging the oblong shipping container such that its major axis extends generally vertically, arranging the shipping container for the absorption unit adjacent to the oblong shipping container, connecting the absorption unit and the cryogenic distillation unit with at least one pipe with the absorption unit and the cryogenic distillation unit remaining mounted in the respective shipping containers.
22. The method according to claim 21 additionally comprising connecting the shipping containers to each other.
23. The method according to claim 22 additionally comprising operating the absorption unit and the cryogenic distillation unit while the shipping containers are connected to each other.
24. A method of manufacturing a cryogenic distillation unit comprising of mounting a distillation column in an oblong ISO shipping container such that a longitudinal axis of the distillation column is generally parallel to a major axis of the shipping container wherein the shipping container includes a plurality of walls extending generally parallel to the major axis, providing an openable aperture in at least one of the walls at a position adjacent a lower end of the distillation column, such that the distillation column can be operatively connected to another device through the aperture while the distillation column remains in the shipping container.
25. The method according to claim 24 additionally comprising mounting at least six anchoring points along a periphery of one of the walls, wherein at least four of the at least six anchoring points also extend around the periphery of the aperture.
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