Processes and systems for generating steam from multiple hot process streams
AssigneeUop LLC
InventorsMark Van Wees, Jason Lee Stahlman
Life of this patent
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Abstract
Embodiments of processes and an apparatus for generating steam are provided. The process comprises the steps of indirectly heating water in a first thermosyphon heat exchanger with a first hot stream to form a first stream of heated water comprising steam. The first stream of heated water is fluidly communicated to a first steam drum via natural circulation. Water is indirectly heated in a second thermosyphon heat exchanger with a second hot stream from the process unit to form a second stream of heated water comprising steam. The second stream of heated water is fluidly communicated to the first steam drum via natural circulation. Steam is recovered from the first steam drum.
Claims20
A process for generating steam comprising the steps of:
- introducing a first hot stream to a first thermosyphon heat exchanger;
- indirectly heating water in the first thermosyphon heat exchanger with the first hot stream to form a first stream of heated water comprising steam;
- thermosyphoning water between a first steam drum and the first thermosyphon heat exchanger including fluidly communicating the first stream of heated water to the first steam drum via natural circulation;
- introducing a second hot stream to a second thermosyphon heat exchanger;
- indirectly heating water in the second thermosyphon heat exchanger with the second hot stream to form a second stream of heated water comprising steam;
- thermosyphoning water between the first steam drum and the second thermosyphon heat exchanger including fluidly communicating the second stream of heated water to the first steam drum via natural circulation;
- and
- recovering steam from the first steam drum.
An apparatus for generating steam, the apparatus comprising:
- a first steam drum configured for providing water and receiving steam for recovery thereof;
- a first thermosyphon heat exchanger;
- a first thermosyphoning water loop circuit that is in fluid communication with the first steam drum and the first thermosyphon heat exchanger, wherein the first thermosyphoning heat exchanger is configured for fluid communication with a first hot process line to receive a first hot stream from a process unit, and wherein the first thermosyphon heat exchanger is configured to indirectly heat water with the first hot stream to form a first stream of heated water comprising steam, and the first thermosyphoning water loop circuit is cooperatively configured with the first thermosyphon heat exchanger for thermosyphoning water between the first steam drum and the first thermosyphon heat exchanger including fluidly communicating the first stream of heated water to the first stream drum via natural circulation;
- a second thermosyphon heat exchanger;
- a second thermosyphoning water loop circuit that is in fluid communication with the first steam drum and the second thermosyphon heat exchanger, wherein the second thermosyphoning heat exchanger is configured for fluid communication with a second hot process line to receive a second hot stream from the process unit, and wherein the second thermosyphon heat exchanger is configured to indirectly heat water with the second hot stream to form a second stream of heated water comprising steam, and the second thermosyphoning water loop circuit is cooperatively configured with the second thermosyphon heat exchanger for thermosyphoning water between the first steam drum and the second thermosyphon heat exchanger including fluidly communicating the second stream of heated water to the first stream drum via natural circulation.
Dependencies are inferred from the claim text.