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貧溶剤のベンゼン含有量が高くなる原因は何か、どう調整すればよいのか?

2019-03-12View Original

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私のベンゼン抽出装置におけるガスと水の比率は約1300で、溶剤回収塔の低温は約172度です。頂圧は-40KPaに制御されています。最近、溶剤が少ない状態でのベンゼン濃度が高くなっており、最大で8000PPmに達しています。通常は5000前後です。専門家の方、ご教示をお願いします。

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