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US 12,722,986 B2Granted
Integrated heat exchanger and sour water stripper
AssigneeAir Producuts and Chemicals, Inc.
InventorsYanlai Zhang, Xukun Luo
Life of this patent
Estimating the term…
Abstract
A combined vessel comprises a stripping section for removing acid gases from a sour water stream and a direct contact heat exchanger section for heating a graywater stream in order to improve heat and mass transfer in the treatment and recycle of water streams for a gasification process.
Claims3
An apparatus for improving mass and heat transfer between multiple streams, the apparatus comprising:
- a combined vessel comprising a stripping section, a direct contact heat exchanger section, and a flash section;
- wherein the stripping section is configured to contact a first sour water stream with a stripping gas stream to produce an acid gas-enriched overhead stream and an acid gas-depleted bottoms stream;
- wherein the heat exchange section comprises packing and/or trays and is configured to contact a high-pressure vapor stream with a graywater stream and the acid gas-depleted bottoms stream to produce the stripping gas stream and a treated graywater stream;
- and
- wherein the flash section is configured to separate a blackwater stream to produce the high-pressure vapor stream and a blackwater bottoms stream.
2 more elements
Dependencies are inferred from the claim text.