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原料藥生產(chǎn)氧化釜氧氣含量監(jiān)測與電化學氧氣分析技術(shù)應用

在原料藥生產(chǎn)過程中,氧化反應是常見的合成步驟之一,反應條件通常涉及精準的氣氛控制。氧化釜內(nèi)部可能存在空氣、氮氣保護氣氛以及揮發(fā)的乙醇等有機溶劑,氧氣濃度有時在高約25%的水平。為確保反應生產(chǎn)、提高產(chǎn)品質(zhì)量與工藝重復性,對釜內(nèi)氧氣含量的實時監(jiān)測顯得尤為關鍵。電化學氧含量分析儀正是實現(xiàn)這一目標的常用設備之一。

電化學分析儀主要部件是一個電化學原電池,它將樣氣中的氧含量轉(zhuǎn)化為電流信號,經(jīng)信號處理在顯示控制中顯示出來。燃料電池的有效成分是1個陰極、1個陽極和醋酸電解液。陰極和陽極被浸沒在溶液中,這個電池將化學反應的能量轉(zhuǎn)化為外電路的電流信號,其作用類似于電池。但是普通電池與微燃料電池的區(qū)別是:在普通電池中,所有的反應電池都封裝在電池中,而在微燃料電池中,其中一個反應介質(zhì)電池在外部的要分析的樣氣中。

電化學氧分析儀原理

微燃料電池是介于電池和純?nèi)剂想姵刂g的,當外部電路被提供時,陽極表面釋放的電子流到陰極表面。這個電流與到達陰極O2的量程成比例,測量電流確定混合氣中O2的含量。

系統(tǒng)組成與樣氣預處理

一套完整的電化學氧分析系統(tǒng)不僅包括分析單元,還涵蓋取樣及預處理模塊。預處理單元對保證測量準確性尤為關鍵,特別是在處理含乙醇揮發(fā)物、水汽及可能存在的其他組分等復雜樣氣時。

預處理通常包含多級措施:

洗氣裝置:采用兩級液洗過濾器,通過中和、吸附或稀釋方式去除對傳感器有害的組分;

氣液分離與干燥:除去樣氣中的水分,避免冷凝液影響傳感器壽命;

多級過濾:保障顆粒物不進入分析單元;

真空發(fā)生器:用于從氧化釜負壓或微正壓環(huán)境中抽取樣氣。

該系統(tǒng)的管路、卡套和接口通常選用耐腐蝕材料,保證長期使用穩(wěn)定性。多級預處理組件設計為透明可視,便于觀察維護與故障排查。

氧化釜氧含量分析儀SD-Y600EX

在原料藥氧化釜中的應用重要性

在原料藥合成工藝氧化反應中,若氧氣濃度不足則可能造成反應不徹底,影響產(chǎn)物收率和純度。

使用電化學氧含量分析儀可實現(xiàn):

實時監(jiān)控與反應控制:精準監(jiān)測氧氣濃度變化,為通入空氣或氮氣的調(diào)節(jié)提供依據(jù),確保氧化反應在理想的條件下進行;

電化學氧含量分析儀憑借其良好的選擇性、可靠的監(jiān)測能力以及靈活的集成性,已成為原料藥生產(chǎn)中氧化釜氣氛控制的重要工具。該系統(tǒng)不僅為工藝安全提供了保障,也為制藥企業(yè)提高產(chǎn)品質(zhì)量提供了關鍵的過程分析技術(shù)支撐。在未來更加注重智能制造和連續(xù)化生產(chǎn)的行業(yè)背景下,高精度、高穩(wěn)定性的氧含量分析技術(shù)將繼續(xù)發(fā)揮其關鍵性作用。


本文關鍵詞:電化學氧含量分析儀,氧化釜氧分析儀,氧濃度分析儀,氧氣分析儀,氣體分析儀

本文作者:宜昌盛達科技有限公司,轉(zhuǎn)載請注明出處!

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宜昌盛達科技有限公司

宜昌盛達科技有限公司成立于2015年,是一家專注氣體安全監(jiān)測與分析的技術(shù)型企業(yè),長期為不同行業(yè)的氣體分析應用客戶提供可靠的分析儀產(chǎn)品和解決方案。

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