Distillation: processes – separatory – Addition of material to distilland to inhibit or prevent... – For inhibiting or preventing a polymerization reaction
Reexamination Certificate
2006-03-21
2006-03-21
Manoharan, Virginia (Department: 1764)
Distillation: processes, separatory
Addition of material to distilland to inhibit or prevent...
For inhibiting or preventing a polymerization reaction
C203S087000, C203S098000, C203SDIG016, C203SDIG021, C560S218000, C562S600000
Reexamination Certificate
active
07014736
ABSTRACT:
An apparatus and a process for purification of an acrylic acid family. The apparatus is an apparatus for distillation purification of the acrylic acid family encompassing acrylic acid and its esters, and includes: a distillation column10to which a liquid containing the acrylic acid family is supplied, and from the column top of which a vapor is retrieved, and from the column bottom of which a liquid is retrieved; a condenser20which is connected to the column top side of the distillation column10, and to which the vapor having been retrieved from the distillation column is supplied, and which condenses the supplied vapor and then refluxes a portion of the resultant condensate to the distillation column10, and from which the residual condensate is retrieved; and a reboiler30which is connected to the column bottom side of the distillation column10, and to which the liquid in the distillation column10is supplied, and which heat-boils the supplied liquid and then returns it to the distillation column10; wherein the reboiler30is set in a number of at least two in parallel to the distillation column10. The process uses the above apparatus.
REFERENCES:
patent: 3803002 (1974-04-01), Skraba et al.
patent: 4019964 (1977-04-01), Fickel
patent: 4056444 (1977-11-01), Weicht et al.
patent: 4110370 (1978-08-01), Engelbach et al.
patent: 4189616 (1980-02-01), Liebert
patent: 4372822 (1983-02-01), Muller et al.
patent: 4469558 (1984-09-01), Watson
patent: 4471619 (1984-09-01), Nolley, Jr.
patent: 4559108 (1985-12-01), Ahlberg
patent: 5876570 (1999-03-01), Thigpen
patent: 6550274 (2003-04-01), Agrawal
patent: 6596129 (2003-07-01), Yoneda et al.
patent: 6632329 (2003-10-01), Mizutani et al.
patent: 6641700 (2003-11-01), Matsumoto et al.
patent: 6666956 (2003-12-01), Nishimura et al.
patent: 1 208 291 (1966-01-01), None
patent: 196 31 332 (1997-11-01), None
patent: 1 043 050 (2000-10-01), None
patent: 1 097 742 (2001-05-01), None
patent: 900457 (1962-07-01), None
patent: 1 452 377 (1976-10-01), None
patent: 2000-254403 (2000-09-01), None
patent: 2000-290226 (2000-10-01), None
patent: 2001-131116 (2001-05-01), None
patent: 2001-190901 (2001-07-01), None
patent: WO 90/07367 (1990-07-01), None
patent: WO 97/44298 (1997-11-01), None
Manoharan Virginia
Nippon Shokubai Co. , Ltd.
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