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US 2007/0175618 A1Published application
Process and apparatus for sythesis gas heat exchange system
AssigneeLinde Process Plants, Inc.
InventorsRonald Key, Maqsudur Khan
Life of this patent
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Abstract
The invention provides an improved process and apparatus for integrating the heat transfer zones of spiral-wound, plate fin, tube and finned tube exchangers thus increasing the overall effectiveness of the process.
Claims25
A process for recovering energy from a hydrogen-bearing synthesis gas stream comprising:
- a. providing a first heat exchanger having at least four separate flow circuits;
- b. supplying a first hot hydrogen-bearing synthesis gas stream to a first flow circuit of said first heat exchanger;
- c. supplying a first cool heat exchange medium to a second flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said first cool heat exchange medium;
- d. feeding a second cool heat exchange medium to a third flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said second cool heat exchange medium;
- e. feeding a third cool heat exchange medium to a fourth flow circuit of said first heat exchanger whereby said hot hydrogen-bearing synthesis gas stream is cooled by indirect heat exchange with said third cool heat exchange medium;
- and
- f. removing cooled hydrogen-bearing synthesis gas stream from said heat exchanger.
4 more elements
A heat exchanger apparatus comprising:
- a. means for defining at least four separate flow circuits within said heat exchanger whereby the first flow circuit is in indirect heat exchange with the second flow circuit, the third flow circuit, and the fourth flow circuit;
- b. a first inlet for introducing hot hydrogen-bearing synthesis gas into the means defining said first circuit of said heat exchanger, and a first outlet for discharging cooled hydrogen-bearing synthesis gas from said means defining said first circuit of said heat exchanger;
- c. a source of hot hydrogen-bearing synthesis gas in fluid communication with said first inlet;
- d. a second inlet for introducing a cool first heat exchange medium into means defining said second circuit of said heat exchanger, and a second outlet for discharging said first heat exchange medium from said means defining said second circuit of said heat exchanger;
- e. a source of cool first heat exchange medium in fluid communication with said second inlet;
- f. a third inlet for introducing a cool second heat exchange medium into means defining said third circuit of said heat exchanger, and a third outlet for discharging said cool second heat exchange medium from said means defining said third circuit of said heat exchanger;
- and
- g. a source of cool second heat exchange medium in fluid communication with said third inlet;
- h. a fourth inlet for introducing a cool third heat exchange medium into means defining said fourth circuit of said heat exchanger, and a fourth outlet for discharging said cool third heat exchange medium from said means defining said fourth circuit of said heat exchanger;
- and
- i. a source of cool third heat exchange medium in fluid communication with said fourth inlet.
8 more elements
Dependencies are inferred from the claim text.