发明公开
EP1379466A2 SELECTIVE OXIDATION OF SODIUM SULFIDE IN KRAFT COOKING LIQUORS 审中-公开
在硫酸盐蒸煮碱硫化钠的选择性氧化

SELECTIVE OXIDATION OF SODIUM SULFIDE IN KRAFT COOKING LIQUORS
摘要:
Provided is a process for the preparation of polysulfides which comprises reaching sodium sulfide with oxygen in the presence of a transition metal oxide, preferably MnO2, and with the consuption rate of O2 being at least 1.5x10-4 moles/1/sec. The process of the present invention is preferably conducted in a self-recirculated reactor, which has been found to allow easy control of the O¿2? consumption rate.
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