{HEAD ~ The method} 1 wherein said carbon dioxide stream containing {TAIL ~ carbonyl sulfide} and reduced amounts of hydrogen, carbon monoxide, and methane is further fractionated to remove said carbonyl sulfide thereby leaving a substantially pure carbon dioxide stream 
{ HEAD ~ The method } 1 wherein said carbon dioxide stream containing { TAIL ~ carbonyl sulfide } and reduced amounts of hydrogen , carbon monoxide , and methane is further fractionated to remove said carbonyl sulfide thereby leaving a substantially pure carbon dioxide stream
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