发明授权
US4008255A Recovery of phthalic anhydride 失效
回收邻苯二甲酸酐

Recovery of phthalic anhydride
摘要:
Process for the recovery of phthalic anhydride in which gases as obtained in the catalytic atmospheric oxidation of o-xylene or naphthalene are treated with a hydrocarbon containing C.sub.26.sub.- paraffins, cooling, if necessary, the hydrocarbon laden with phthalic anhydride, separating the solid phthalic anhydride followed by melting and distillation thereof.
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