酸霧凈化塔的“黃煙”問題處理-酸洗廢氣治理設備_廣東青藍環?？萍加邢薰?/title> <meta name="keywords" content="酸霧凈化塔"/> <meta name="description" content="原因分析酸霧凈化塔冒“黃煙”問題的根本原因就是酸霧凈化得不徹底?！包S煙”的主要成分是 NO2、 N2O4、氣態的硝酸分子和氫氟酸分子[3]。由于鈦在含有氟離子的硝酸液中酸洗時，硝酸被還原，生成氟化鈦絡合物、水和無…"/> <link data-minify="1" rel="stylesheet" type="text/css" href="http://www.artecuratrasformazione.net/wp-content/cache/min/1/wp-content/themes/wpinstrument/style-711a2cef0356453ac7debe745da76948.css" media="screen" />  <link href='https://fonts.gstatic.com' crossorigin rel='preconnect' /> <link data-minify="1" rel='stylesheet' id='yarppWidgetCss-css' href='http://www.artecuratrasformazione.net/wp-content/cache/min/1/wp-content/plugins/yet-another-related-posts-plugin/style/widget-3006453393c3057a32beb29ff92b941c.css' type='text/css' media='all' /> <link rel='stylesheet' id='wp-block-library-css' href='http://www.artecuratrasformazione.net/wp-includes/css/dist/block-library/style.min.css?ver=5.4.5' type='text/css' media='all' /> <link data-minify="1" 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<h2 class="post_title">酸霧凈化塔的“黃煙”問題處理-酸洗廢氣治理設備</h2> <div class="post_meta"> <span>作者：青藍環保</span> <span>時間：<time>2020-5-4</time></span> <span>瀏覽：41</span> </div> <div class="entry"> <h2>原因分析<span id="i" class="ez-toc-section"></span><span class="ez-toc-section" id="i"></span></h2> <p><strong>酸霧凈化塔</strong>冒“黃煙”問題的根本原因就是酸霧凈化得不徹底?！包S煙”的主要成分是 NO2、 N2O4、氣態的硝酸分子和氫氟酸分子[3]。由于鈦在含有氟離子的硝酸液中酸洗時，硝酸被還原，生成氟化鈦絡合物、水和無色的一氧化氮，若暴露在大氣中，則一氧化氮被迅速氧化成棕色有毒的二氧化氮，所以沒有除盡的酸霧呈現出黃色[4]。</p> <p><img class="alignnone size-full wp-image-136" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20350%20235'%3E%3C/svg%3E" width="350" height="235" alt="酸洗凈化塔" data-lazy-srcset="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780.png 350w, http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780-300x201.png 300w" data-lazy-sizes="(max-width: 350px) 100vw, 350px" data-lazy-src="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780.png" /><noscript><img class="alignnone size-full wp-image-136" src="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780.png" width="350" height="235" alt="酸洗凈化塔" srcset="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780.png 350w, http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/c7b76acd45c541ba3780-300x201.png 300w" sizes="(max-width: 350px) 100vw, 350px" /></noscript></p> <p>造成酸霧凈化不徹底的原因主要有以下兩方面。</p> <h3>（1）工藝方面因素<span id="1" class="ez-toc-section"></span><span class="ez-toc-section" id="1"></span></h3> <p>酸洗工藝不完善</p> <p>鈦及鈦合金采用的是硝酸+ 氫氟酸混酸酸洗，由于每一批鈦合金板材的成分不同，需要經常重新配酸。酸洗時針對不斷降低的酸液濃度，還要及時補充酸。為防止鈦材酸洗時吸氫，還要保證硝酸與氫氟酸的配比大于 5，硝酸含量過大，會造成一氧化氮氣體增多，生成二氧化氮相應增加。并且由于硝酸過多，酸液溫度也會相應升高，將會使硝酸和氫氟酸揮發量增多。此外，酸霧溫度過高也會影響吸收液的吸收效率。因此，酸霧大量增加是造成酸霧凈化塔凈化不徹底，形成 “黃煙”現象的主要原因。</p> <p>酸霧凈化工藝不完善</p> <p>不同材質的鈦材需要采用相應配比的酸洗工藝，產生的酸霧的濃度也不相同，導致酸霧吸收液的配比也就不同。因此，一旦吸收液因配比濃度問題不能完全中和吸收酸霧，就會產生“黃煙”現象。在酸霧凈化過程中，酸霧濃度是不變的，而吸收液的濃度在中和過程中不斷下降，如果不能及時補充吸收液就會使凈化不徹底，形成“黃煙”問題。此外，凈化液中加入的 M1 藥劑和 M2 藥劑中都含有強氧化劑的高錳酸鉀，該氧化劑的水溶液不穩定，遇光容易分解，因此吸收液在使用一段時間后就會由于“老化”而失效，這也容易造成“黃煙”問題。</p> <h3>（ 2 ）設備方面因素<span id="_2" class="ez-toc-section"></span><span class="ez-toc-section" id="_2"></span></h3> <p>噴嘴堵塞在四級吸收塔中均采用噴淋式中和酸霧方法，即吸收液從噴嘴由上向下噴出，在與下面的酸霧逆流接觸過程中發生化學反應凈化酸霧。由于冬季氣溫低，氫氧化鈉容易結晶，則吸收液在工作時容易堵塞噴淋噴嘴。由此造成吸收不完全，形成“黃煙”。泵的壓力不足酸霧凈化塔中采用一備一用，共 8 臺酸霧凈化噴淋泵，由于該泵一直工作在強堿性環境中，受到腐蝕比較嚴重，一般工作壽命只有 4 個月，而且容易發生故障。而一旦其中一臺泵發生故障，就會影響到吸收塔的凈化效果，導致“黃煙”問題的產生。</p> <h2>預防及解決方案<span id="i-2" class="ez-toc-section"></span><span class="ez-toc-section" id="i-2"></span></h2> <ul> <li>（1）對于不同材質的鈦材，首先還是設計出科學合理的酸洗工藝，即在保證清洗掉氧化層的前提下，盡可能降低硝酸的濃度，以便在源頭上控制酸霧的濃度。</li> <li>（2）針對不同的酸洗工藝，要通過實驗總結相匹配的凈化工藝，在工作中要監控藥液的濃度，發現濃度偏低時要及時補充。一般凈化液的使用期限為 4~6 個月，一旦發現藥液失效必須立即更換，重新配制。</li> <li>（3）在夏季，當發現廢氣排放溫度過高時，應立即采取降溫措施，必要時加冰塊降溫。而在冬季，為預防藥液結晶，必須防止噴淋藥液濃度過高的問題。</li> <li>（4）定期檢查酸霧噴淋泵的出口壓力，一旦發現壓力增高應立即檢查酸霧凈化塔的噴嘴是否堵塞，并且及時清理。（5）定期檢修酸霧凈化噴淋泵，發現出口壓力減小時應立即檢查噴淋泵是否已經損壞</li> </ul> <h2>結論<span id="i-3" class="ez-toc-section"></span><span class="ez-toc-section" id="i-3"></span></h2> <p>通過本文分析，形成“黃煙”的主要原因包括酸洗工藝中硝酸用量過多，酸霧凈化液的濃度過低，凈化液“老化”迅速，冬季里氫氧化鈉結晶會堵塞噴嘴，以及噴淋泵損壞等。因此，通過改進酸洗工藝及酸霧凈化工藝，及時調配凈化液，定期檢修噴淋泵和噴嘴等措施，如今，“黃煙”現象已經得到有效控制，生產環境全面改善。</p> <h2>酸霧凈化塔案例<span id="i-4" class="ez-toc-section"></span><span class="ez-toc-section" id="i-4"></span></h2> <p>為了去除在熱加工過程中鈦及鈦合金板材表面形成的金屬氧化物薄膜，就必須進行酸洗處理。由于鈦及其合金的酸洗工藝采用的是 30%～40% 的 HNO3 加上 5%～7%的 HF 和 H2O。因此，在酸洗過程中會產生有毒的酸霧，嚴重損害操作工人的身體健康[1]。</p> <p><strong>西部鈦業公司板帶廠</strong>采用單張板噴淋式的連續酸洗線，該酸洗線工藝段采用全封閉式，有效解決了酸霧揮發的問題。在酸洗過程中產生的酸霧必須經過收集進入酸霧凈化塔進行凈化處理，在達到 GB 16297-1996 《大氣污染物綜合排放標準》規定的氟化物排放濃度≤9 mg/m3，氮氧化物排放濃度≤240 mg/m3 的標準之后排放到大氣中。在實際生產過程中，偶爾發現酸霧凈化塔出現冒 “黃煙”的問題，嚴重影響周圍的環境，對廠房的墻壁和設備腐蝕嚴重，必須徹底解決并預防此類問題的再次發生。</p> <h2>推薦設備：酸洗廢氣治理設備<span id="i-5" class="ez-toc-section"></span><span class="ez-toc-section" id="i-5"></span></h2> <p><img class="alignnone size-full wp-image-137" src="data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20350%20235'%3E%3C/svg%3E" width="350" height="235" alt="廢氣處理工程" data-lazy-srcset="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f.png 350w, http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f-300x201.png 300w" data-lazy-sizes="(max-width: 350px) 100vw, 350px" data-lazy-src="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f.png" /><noscript><img class="alignnone size-full wp-image-137" src="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f.png" width="350" height="235" alt="廢氣處理工程" srcset="http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f.png 350w, http://www.artecuratrasformazione.net/wp-content/uploads/2020/08/1ab944be75045f25558f-300x201.png 300w" sizes="(max-width: 350px) 100vw, 350px" /></noscript></p> <p><strong>酸洗凈化塔</strong>也叫洗滌塔、脫硫塔（脫硫專用）、吸收塔，內含填料（濾料），常搭配活性炭吸附設備或者活性炭吸附塔、UV除臭裝置等產品，用于除塵、廢氣治理效果，材質可選玻璃、pp、不銹鋼、聚丙烯等材料，制造。</p> <p>廣東青藍環?？萍加邢薰?，工商注冊經營為：環保設備研發、銷售，廠房面積超過2000平方，是一家專業制造的酸霧凈化塔的生產廠家，制造工藝嚴謹，質量和技術可靠，包工程安裝，包管道安裝，售后服務保修一年并且價格便宜，深受眾多企業客戶信賴以及同河北和山東同行業客戶信賴。</p> <div class='yarpp-related yarpp-related-none'> <p>No related posts.</p> </div> </div> <div class="post_navi"> <p> <span>上一篇：</span><a href="http://www.artecuratrasformazione.net/97/" rel="prev">網格式鉻酸廢氣凈化器的應用</a> </p> <p> <span>下一篇：</span><a href="http://www.artecuratrasformazione.net/118/" rel="next">活性炭吸附脫附催化燃燒裝置工程案例</a> </p> </div> <div class="go_back"><a href="http://www.artecuratrasformazione.net/category/%e6%96%b0%e9%97%bb%e4%b8%ad%e5%bf%83/">返回列表</a></div> </article> </main> </div> <footer class="footer"> <div class="inner"> <div class="clear"></div> <div class="copyright"> <p>Copyright © 2018-2021 <a href="http://www.artecuratrasformazione.net" title="廣東青藍環?？萍加邢薰?>廣東青藍環?？萍加邢薰?/a> All Rights Reserved. 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