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發(fā)表時(shí)間：2022-04-19 17:58:20</div> <div id="j55595n" class="proinfo"> <p style="text-align: center; text-indent: 2em;"><img src="/uploads/attach/20210317/605167269af05.jpeg"/></p><p style="text-indent: 2em;">板式換熱器清洗廠(chǎng)家介紹板式換熱器結垢的清洗方式。</p><p style="text-indent: 2em;">1.清洗劑的選擇。</p><p style="text-indent: 2em;">清洗劑的選擇是酸洗，包括有機酸和無(wú)機酸。有機酸主要包括草酸、甲酸等。無(wú)機酸主要包括鹽酸、硝酸等。根據換熱器的結垢和工藝。材料和結垢成分分析：</p><p style="text-indent: 2em;">1)換熱器流通面積小，內部結構復雜，清洗液沉淀不易排放。</p><p style="text-indent: 2em;">2)熱交換器材料為鎳鈦合金，以鹽酸為清洗液，易對板材產(chǎn)生強腐蝕，縮短熱交換器的使用壽命。</p><p style="text-indent: 2em;">通過(guò)反復試驗發(fā)現，選擇甲酸作為清洗液非常有效。在甲酸清洗液中加入緩沖劑和表面活性劑，具有良好的清洗效果，可減少清洗液對板材的腐蝕。結垢樣本的化學(xué)試驗表明，甲酸能有效去除結垢。通過(guò)酸液浸泡試驗，發(fā)現甲酸能有效去除附著(zhù)在板上的結垢，對換熱器板的腐蝕作用也很小。</p><p style="text-indent: 2em;">2.去除水垢的基本原理。</p><p style="text-indent: 2em;">1)溶解效果：酸溶液易與鈣.鎂.碳酸鹽水垢發(fā)生反應，產(chǎn)生易溶化合物，使水垢溶解。</p><p style="text-indent: 2em;">2）剝離效果：酸溶液可溶解金屬表面的氧化物，破壞與結垢的結合。從而剝離附著(zhù)在金屬氧化物表面的結垢。并脫落。</p><p style="text-indent: 2em;">3）氣體提升功能：酸溶液與鈣、鎂、碳酸鹽水垢反應后，產(chǎn)生大量二氧化碳。二氧化碳氣體在溢出過(guò)程中。對于不溶性或溶解緩慢的水垢層，有一定的提升動(dòng)力，使水垢從換熱器加熱表面脫落。</p><p style="text-indent: 2em;">4）疏松作用：對于含有硅酸鹽和硫酸鹽的混合垢，由于鈣、鎂、碳酸鹽和鐵的氧化物溶解在酸溶液中，殘留的垢會(huì )變得松散，容易被流動(dòng)的酸溶液沖刷。</p><p style="text-indent: 2em;">3.清洗水垢的工藝要求。</p><p style="text-indent: 2em;">1)酸洗溫度:提高酸洗溫度有利于提高除垢效果。如果溫度過(guò)高，會(huì )加劇酸洗液對換熱器板的腐蝕。通過(guò)反復試驗，發(fā)現酸洗溫度應控制在60~E。</p><p style="text-indent: 2em;">2)酸洗液濃度:根據反復試驗，酸洗液應按甲酸81.0%.水17.0%.緩沖劑1.2%.表面活性劑0.8%的濃度制備，清洗效果好。</p><p style="text-indent: 2em;">3)酸洗方法及時(shí):酸洗方法應與靜態(tài)浸泡和動(dòng)態(tài)循環(huán)相結合。酸洗時(shí)間為靜態(tài)浸泡2h，然后動(dòng)態(tài)循環(huán)3~4h。酸洗過(guò)程中，酸洗濃度應經(jīng)常取樣。當相鄰兩次試驗濃度差小于0.2%時(shí)，可視為酸洗反應結束。</p><p style="text-indent: 2em;">4）鈍化處理：酸洗后，板式換熱器表面的大部分水垢和金屬氧化物溶解脫落，暴露出新的金屬，易腐蝕。因此，酸洗后，熱交換器板被鈍化。</p><p style="text-indent: 2em;">4.清洗水垢的具體步驟。</p><p style="text-indent: 2em;">1)洗滌:酸洗前，先打開(kāi)換熱器，使換熱器內無(wú)泥、垢等雜質(zhì)，既能提高酸洗效果，又能降低酸洗耗酸量。</p><p style="text-indent: 2em;">2)將清洗液倒入清洗設備中，再注入換熱器。</p><p style="text-indent: 2em;">3)酸洗:靜態(tài)浸泡充滿(mǎn)酸溶液的換熱器2h。然后連續動(dòng)態(tài)循環(huán)3~4小時(shí)。每0.5小時(shí)交替清洗一次。酸洗后，如果酸液PH值大于2，酸液可重復使用，否則酸洗液應稀釋中和后排出。</p><p style="text-indent: 2em;">4)堿洗:酸洗后，按一定比例配制NaOH、Na、PO和軟化水，通過(guò)動(dòng)態(tài)循環(huán)對換熱器進(jìn)行堿洗，實(shí)現酸堿中和，板腐蝕。</p><p style="text-indent: 2em;">5)洗滌:堿洗后，用干凈的軟化水反復沖洗換熱器0.5h，徹底沖洗換熱器內的殘渣。</p><p style="text-indent: 2em;">6）記錄：在清洗過(guò)程中，應嚴格記錄每一步的時(shí)間，以檢查清洗效果。簡(jiǎn)言之，清洗后，應對換熱器進(jìn)行壓縮試驗。合格后方可使用。</p><p style="text-indent: 2em;">5.防止板式換熱器結垢的措施。</p><p style="text-indent: 2em;">1)嚴格控制運行中的水質(zhì)，對系統中的水和軟化罐中的軟化水進(jìn)行嚴格的水質(zhì)測試，合格后才能注入管網(wǎng)。</p><p style="text-indent: 2em;">2)新系統投入運行時(shí)，應將換熱器與系統分開(kāi)，循環(huán)一段時(shí)間，然后將換熱器與系統合并，避免管網(wǎng)中雜質(zhì)進(jìn)入換熱器。</p><p style="text-indent: 2em;">3)在整個(gè)系統中，除污器和過(guò)濾器應不定期清洗，并保持管網(wǎng)清洗，防止換熱器堵塞。</p><p><br/></p> </div> <div id="d5rzfzz" class="fenye-cont mt20"> <span>上一篇：<a href="/art/cjwt98.html">管殼式換熱器清洗公司介紹管殼式換熱器如何檢測日常的溫度呢？</a></span> <span>下一篇：<a 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height: 40px; background: #007AFF; color: #fff; text-align: center; line-height: 40px; font-size: 17px; width: 180px; cursor: pointer; } .chat1 i { font-size: 24px; margin-right: 10px; } .chat2 { position: fixed; bottom: 0; right: 60px; z-index: 9999999; box-shadow: rgba(0, 0, 0, 0.16) 0 5px 40px; width: 330px; height: 480px; border-radius: 8px; background: #fff; display: none; } .chat2-title { display: flex; justify-content: space-between; align-items: center; background: #007AFF; height: 60px; line-height: 60px; border-radius: 8px 8px 0 0; padding: 0 15px; color: #fff; } .chat2-title .avatar { display: flex; align-items: center; } .chat2-title .avatar p { font-size: 18px; margin-left: 10px; } .chat2-title .avatar img { width: 40px; height: 40px; border-radius: 100%; } .chat2-text { height: 290px; overflow-y: auto; padding: 15px; position: relative; } .chatText-left { margin: 5px 0; } .chat2-text p { color: #999; } .chat2-text .chatText-desc { border: 1px solid #e1e1e1; border-radius: 3px; padding: 10px; font-size: 13px; line-height: 1.2; display: inline-block; } .chatText-right { margin: 5px 0; text-align: right; } .chat-textarea { border-top: 1px solid #e1e1e1; } .chat-textarea textarea { border: none; width: 100%; padding: 5px; height: 50px; color: #888; font-family: "宋體"; box-sizing: border-box; } .chat-click { float: right; cursor: pointer; } .chat-click span { width: 62px; height: 32px; background: #007AFF; color: #fff; text-align: center; line-height: 32px; display: block; border-radius: 4px; margin: 0 10px 10px 0; } .chatText-right .chatText-desc { background: #007AFF; color: #fff; border: 1px solid #007AFF; } @media only screen and (min-width: 320px) and (max-width: 640px){ .chat1{right:10px;width:24px;height:24px;bottom:1.15rem;border-radius:100%;padding:5px;line-height: 26px;} .chat2{width:100%;height:100vh;right:0;border-radius: 0;} .chat-textarea textarea{height: 120px} } </style> <script> //在線(xiàn)懸浮框 $(".chat1").click(function () { $(".chat2").slideDown(100); $(".chat1").hide(); }); $(".chat2 .chat2-down").click(function () { $(".chat2").slideUp(100); $(".chat1").show(100); }); //調取所有的聊天記錄 $(document).ready(function () { getMsgNum(); }); //請求指定的接口，獲取當前用戶(hù)的所有聊天記錄 function getMsgNum() { $.ajax({ url: "/api/msg/get_meassage.html", type: 'get', dataType: 'json', success: function (data) { var obj = data.data; //判斷回調的數據是否為空，為空的，則data字段不存在，obj為undefined if (obj !== undefined) { $.each(obj, function (name, value) { //用戶(hù)發(fā)送過(guò)的聊天內容 $('#message_list').append('<div id="hxdhlr5" class="chatText-right"><p>' + this.send_time + '</p><div id="f5xx55p" class="chatText-desc">' + this.send_content + '</div></div>'); //客服回復的內容 if (this.reply_time != null && this.reply_content != null) { $('#message_list').append('<div id="lltdj9n" class="chatText-left"><p>' + this.reply_time + '</p><div id="tnp5fbv" class="chatText-desc">' + this.reply_content + '</div></div>'); } }); } } }); } //回車(chē)觸發(fā)點(diǎn)擊事件，提交聊天記錄 $(document).keyup(function (event) { if (event.keyCode == 13) { sendcontent(); } }); //發(fā)送留言信息 function sendcontent() { //獲取發(fā)送的內容 let send_content = $("#askContent").val().replace(/[\n\r]/g, '<br>'); //發(fā)送內容不為空時(shí)執行發(fā)送請求 if (send_content != "") { //生成隨機數 let num = parseInt(Math.random() * 1000); let sender = `user${num}`; //發(fā)送后清空輸入框 document.getElementById("askContent").value = ""; $.ajax({ url: "/api/msg/sendMessage.html", type: 'post', dataType: 'json', data: { "send_content": send_content, "sender": sender }, success: function (data) { //實(shí)時(shí)追加用戶(hù)發(fā)送的每一條記錄 $('#message_list').append('<div id="bvzh5nx" class="chatText-right"><p>' + data.data[0].send_time + '</p><div id="z5tv5h5" class="chatText-desc">' + data.data[0].send_content + '</div></div>'); //延遲回復指定的客服信息 let timeId = setTimeout(function () { $('#message_list').append('<div id="pzh5dz1" class="chatText-left"><p>' + data.data[0].reply_time + '</p><div id="rjxf9jn" class="chatText-desc">' + data.data[0].reply_content + '</div></div>'); }, 5000); } }); } } //時(shí)間戳轉化成具體的日期2020-08-12 09:15:00 function timestampToTime(timestamp) { var date = new Date();//時(shí)間戳為10位需*1000，時(shí)間戳為13位的話(huà)不需乘1000 var Y = date.getFullYear() + '-'; var M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-'; var D = (date.getDate() < 10 ? '0' + date.getDate() : date.getDate()) + ' '; var h = (date.getHours() < 10 ? '0' + date.getHours() : date.getHours()) + ':'; var m = (date.getMinutes() < 10 ? '0' + date.getMinutes() : date.getMinutes()) + ':'; var s = (date.getSeconds() < 10 ? '0' + date.getSeconds() : date.getSeconds()); strDate = Y + M + D + h + m + s; return strDate; } </script>