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US4299652A Process for recovery of pulp mill chemicals 失效
回收纸浆厂化学品的工艺

Process for recovery of pulp mill chemicals
摘要:
A process is disclosed in which a waste gas containing sulfur compounds and carbon dioxide from pulp mill is contacted with an aqueous alkali solution derived from green liquor, white liquor or weak white liquor having low pH value and low sodium ion concentration and having been oxidized, whereby the sulfur compounds are absorbed as completely as possible with minimal absorption of carbon dioxide in the waste gas.
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