Gas separation: processes – Liquid-solid slurry used – Organic compound removed from gas
Reexamination Certificate
2005-08-22
2010-10-26
Choi, Ling-Siu (Department: 1796)
Gas separation: processes
Liquid-solid slurry used
Organic compound removed from gas
C095S092000, C095S094000, C095S117000, C095S149000, C095S204000, C096S290000, C096S300000, C521S048000, C528S271000, C528S272000, C528S308200, C528S501000, C422S131000, C422S139000, C422S198000
Reexamination Certificate
active
07819942
ABSTRACT:
The invention relates to a method for producing a high-molecular polyester from a solidified polyester prepolymer by solid phase polycondensation. The polycondensation cleavage products of the solid phase polycondensation reaction are extracted from the product by means of a process gas, and the process gas is then cleaned and essentially recycled. According to the invention, the process gas is cleaned by means of an aqueous washing liquid. The invention also relates to an installation for carrying out the inventive method, said installation containing a crystallisation appliance (1) and a reaction appliance (2). A gas outlet (2d) of the reaction appliance (2) is directly or indirectly connected to a gas inlet (3c) in a gas cleaning system (3), and a gas outlet (3d) of the gas cleaning system (3) is connected to a gas inlet (2c) of the reaction appliance (2). Furthermore, the gas cleaning system (3) comprises a gas washing appliance to which an aqueous washing liquid is supplied, and a gas drying appliance (4) which is mounted downstream.
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The Concise Polytechnical Dictionary, M, 1956, p. 653, article “Purification of flue gases”.
Christel Andreas
Ferreira Claudemiro
Buhler AG
Carella, Byrne, Cecchi
Choi Ling-Siu
Hand Francis C.
Tischler Frances
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