Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Reexamination Certificate
2006-11-07
2006-11-07
Parsa, J. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C208S0480AA
Reexamination Certificate
active
07132577
ABSTRACT:
Provided is a method of inhibiting the formation of coke in an ethylene dichloride to vinyl chloride monomer pyrolysis cracker. The coke formation, which occurs during an ethylene dichloride pyrolysis reaction, is inhibited by contacting a heat-transfer surface of the cracker and a boron compound. The amount of coke generated when a coke formation-inhibiting material is used is 50% or less of that when a coke formation-inhibiting material is not used. In this case, however, the ethylene chloride conversion and the selectivity to a vinyl chloride monomer during the pyrolysis reaction are not affected. Accordingly, the efficiency of the pyrolysis cracker can be maximized.
REFERENCES:
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patent: 6228253 (2001-05-01), Gandman
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patent: 0 219 960 (1987-04-01), None
Bae Jongwook
Ha Seung Back
Jo Donghyun
Kim Juyoul
Kim Sung Won
Cantor & Colburn LLP
LC Chem, Ltd.
Parsa J.
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