Distillation: processes – separatory – Water purification only – Under pressure or vacuum
Patent
1996-03-18
1998-07-14
Tran, Hien
Distillation: processes, separatory
Water purification only
Under pressure or vacuum
203 75, 203 76, 203 77, 203 92, 203 93, 203 94, 423352, 518704, 518705, 568913, B01D 338
Patent
active
057798613
ABSTRACT:
An apparatus and method for treating chemical production plant process condensate and low pressure purge gas such that a contaminant-rich stream is recoverable from the condensate and purge gas, wherein the contaminants are substantially removed from the condensate by steam stripping and subsequent rectification in a relatively low pressure stripping/rectification tower. The tower overhead is then condensed, and any non-condensed gases are subjected to water scrubbing, along with the low pressure purge gas to further recover contaminates from the non-condensed gas. A portion of the condensed overhead and scrubbing water containing contaminates is returned to the top of the rectification section of the tower as reflux and the balance being withdrawn as a concentrated stream for reuse in the plant. The apparatus may be used in conjunction with existing low pressure equipment, avoiding costly major modifications, and is particularly adapted to use in conjunction with ammonia and methanol plants.
REFERENCES:
patent: 3011969 (1961-12-01), Mader
patent: 3404072 (1968-10-01), Bollen et al.
patent: 3518166 (1970-06-01), Klett
patent: 3636106 (1972-01-01), Villiers-Fisher
patent: 3922222 (1975-11-01), Van Moorsel
patent: 3936500 (1976-02-01), Kaasenbrood et al.
patent: 4110087 (1978-08-01), Nolley, Jr.
patent: 4138434 (1979-02-01), Lagana et al.
patent: 4155804 (1979-05-01), Edge Jr.
patent: 4235816 (1980-11-01), Lagana et al.
patent: 4260462 (1981-04-01), Didyez et al.
patent: 4321410 (1982-03-01), Ono et al.
patent: 4330307 (1982-05-01), Coury
patent: 4347385 (1982-08-01), Scoggin
patent: 4376758 (1983-03-01), Pagani et al.
patent: 4422903 (1983-12-01), Messick et al.
patent: 4444571 (1984-04-01), Matson
patent: 4464228 (1984-08-01), Roensch
patent: 4522979 (1985-06-01), Stokes
patent: 4539077 (1985-09-01), Jonckers et al.
patent: 4566947 (1986-01-01), Tsuruta
patent: 4587373 (1986-05-01), Hsia
patent: 4594131 (1986-06-01), Maier
patent: 4613697 (1986-09-01), Pagani
patent: 4632676 (1986-12-01), Mosebach et al.
patent: 4693883 (1987-09-01), Fleming
patent: 4801356 (1989-01-01), Grasso
patent: 5011625 (1991-04-01), LeBlanc
patent: 5073669 (1991-12-01), Forte
patent: 5167773 (1992-12-01), Eagan et al.
patent: 5170630 (1992-12-01), Stern
patent: 5198103 (1993-03-01), Meyer et al.
Combined Treatment of Ammonia/Urea Process Condensates, R.B. Strait, The M.W. Kellog Company, presented at the Gulf Coast Ammonia Producers Meeting, Apr. 6, 1993.
Control of Effluent in an Integrated Nitrogen Fertilizer Complex, Allan D. Holiday, Cooperative Farm Chemicals Association, presented at The Fertilizer Institute Environmental Symposium, Mar., 1978.
System Curbs Nitrogen in Plant-Effluent Streams, Chemical Engineering, Aug. 14, 1978, p. 93.
Holiday Allan
Scott Ralph A.
Farmland Industries, Inc.
Tran Hien
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