SYSTEM AND METHOD FOR PURIFYING AN AQUEOUS STREAM
First Claim
1. A system to purify a waste fluid stream, the system comprising:
- a recirculation pump having an inlet for a recirculation stream and an outlet to expel a pressurized stream, the recirculation stream comprising a waste fluid stream and a recycled liquid bottoms stream;
a compressor having an inlet for an evaporation stream and an outlet for a pressurized evaporation stream;
a primary heat exchanger having inlets for the pressurized stream and the pressurized evaporation stream, having an internal surface area for heat transfer from the evaporation stream to the pressurized stream, and having outlets for a cooled product stream and a heated pressurized stream, whereinthe heated pressurized stream is formed by heating the pressurized stream, andthe cooled product stream is formed by cooling the evaporation stream; and
an evaporation unit having an inlet for the heated pressurized stream and outlets for an evaporation stream and the recycled liquid bottoms stream, whereinthe evaporation stream is formed when volatile compounds in the heated pressurized stream evaporate in the evaporation unit, andthe liquid bottoms stream is formed from a portion of the heated pressurized stream that does not evaporate.
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Accused Products
Abstract
A system and method are disclosed for purifying a waste fluid stream. The system includes a recirculation pump having an inlet for a recirculation stream and an outlet to expel a pressurized stream. The system includes a compressor having an inlet for an evaporation stream and an outlet for a pressurized evaporation stream. A primary heat exchanger has inlets for the pressurized stream and the pressurized evaporation stream, an internal surface area for heat transfer from the evaporation stream to the pressurized stream, and outlets for a cooled product stream and a heated pressurized stream. The heated pressurized stream is formed by heating the pressurized stream and the cooled product stream is formed by cooling the evaporation stream. The system includes an evaporation unit having an inlet for the heated pressurized stream and outlets for an evaporation stream and the recycled liquid bottoms stream.
24 Citations
47 Claims
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1. A system to purify a waste fluid stream, the system comprising:
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a recirculation pump having an inlet for a recirculation stream and an outlet to expel a pressurized stream, the recirculation stream comprising a waste fluid stream and a recycled liquid bottoms stream; a compressor having an inlet for an evaporation stream and an outlet for a pressurized evaporation stream; a primary heat exchanger having inlets for the pressurized stream and the pressurized evaporation stream, having an internal surface area for heat transfer from the evaporation stream to the pressurized stream, and having outlets for a cooled product stream and a heated pressurized stream, wherein the heated pressurized stream is formed by heating the pressurized stream, and the cooled product stream is formed by cooling the evaporation stream; and an evaporation unit having an inlet for the heated pressurized stream and outlets for an evaporation stream and the recycled liquid bottoms stream, wherein the evaporation stream is formed when volatile compounds in the heated pressurized stream evaporate in the evaporation unit, and the liquid bottoms stream is formed from a portion of the heated pressurized stream that does not evaporate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A system to purify a waste fluid stream, the system comprising:
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a recirculation pump having an inlet for a recirculation stream and an outlet to expel a pressurized stream, the recirculation stream comprising a waste fluid stream and a recycled liquid bottoms stream; a compressor having an inlet for an evaporation stream and an outlet for a pressurized evaporation stream; a primary heat exchanger having inlets for the pressurized stream, the pressurized evaporation stream, and a heat transfer fluid, the heat exchanger transferring heat from the heat transfer fluid and from the evaporation stream to the pressurized stream; an evaporation unit having an inlet for the pressurized stream and outlets for an evaporation stream and the recycled liquid bottoms stream; a stripping vessel having inlets for the evaporation stream, a recycled bottoms stream, and a stripper reflux stream and outlets for a stripper vapor outlet stream and a stripper bottoms stream; a stripper recycle pump having an inlet for the stripper bottoms stream and an outlet for the recycled bottoms stream; a reboiler having inlets for the recycled bottoms stream and a heat transfer fluid, the reboiler having an internal surface area for heat transfer from the heat transfer fluid to the recycled bottoms stream; a condensing unit having an inlet for the stripper vapor outlet stream and outlets for a volatile fractions stream, a non-condensable stream, and the stripper reflux stream, wherein the stripper reflux stream returns to the stripping vessel; a secondary recovery heat exchanger having inlets for the waste fluid stream and the final product stream, the heat exchanger transferring heat from the final product stream to the waste fluid stream.
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34. A method to purify a waste fluid stream, the method comprising:
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joining a waste fluid stream with a pressurized stream; recirculating the pressurized stream through a primary heat exchanger and an evaporation unit; transferring heat from an evaporation stream to the pressurized stream; evaporating volatile compounds from the pressurized stream in the evaporation unit, the volatile compounds forming the evaporation stream; and returning a portion of the heated pressurized stream that does not evaporate to the pressurized stream. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification