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id="npt55nx" class="Current">當(dāng)前位置：<a href="/article.html">技術(shù)支持</a>><span>制糖行業(yè)可以使用工業(yè)聚丙烯酰胺嗎？</span> <span id="7rl7d55" class="column">技術(shù)文章</span> </div> <div id="7v55xxp" class="page"> <div id="pn5dbbn" class="t_950_1">  <div id="d5j53hh" class="page"> <div id="dhlfvhh" class="t_950_1">  <div id="xvx5rfx" class="pro">  <div id="hff5pj7" class="news_con"> <h1>制糖行業(yè)可以使用工業(yè)聚丙烯酰胺嗎？</h1> <div id="f5hxdn5" class="time">點(diǎn)擊次數(shù)：449 更新時(shí)間：2023-02-07</div> <div id="xvxbvth" class="news_wz"><div><span style="font-size: 16px;">　　<strong><a href="http:///Products-21242920.html" target="_blank">工業(yè)聚丙烯酰胺</a></strong>的殘余單體含量是衡量它是否適用于食品工業(yè)的重要參數(shù)。聚丙烯酰胺的聚合物是無(wú)毒的，在國(guó)際上已廣泛用于自來(lái)水清凈、食品工業(yè)和制糖工業(yè)。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　不過(guò)，在工業(yè)品聚丙烯酰胺中，難免殘留有微量的未聚合的丙烯酰胺單體，因此，必須嚴(yán)格控制聚丙烯酰胺產(chǎn)品中的殘余單體含量，國(guó)際規(guī)定用于飲用水和食品工業(yè)的聚丙烯酰胺中的殘余單體含量不超過(guò)0.05%。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　工業(yè)聚丙烯酰胺的陰離子度在制糖工業(yè)的使用效果有很大影響，但它的適宜數(shù)值需視所處理的物料的種類和性質(zhì)而定，不同情況下會(huì)有不同的數(shù)值。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　根據(jù)我們多年的研究和對(duì)數(shù)十個(gè)工業(yè)聚丙烯酰胺樣本進(jìn)行對(duì)比試驗(yàn)與分析，制糖工業(yè)所用的聚丙烯酰胺陰離子度22～28%較適合，且適應(yīng)性較強(qiáng)，可用于不同的物料(蔗汁、糖漿、赤糖及原糖的回溶糖漿)以及不同的工藝流程(亞硫酸法、碳酸法和磷浮法)，國(guó)外生產(chǎn)的糖用聚丙烯酰胺的陰離子度多數(shù)在此范圍。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　如果所處理的物料的離子強(qiáng)度較高(含無(wú)機(jī)物較多)，所用聚丙烯酰胺的陰離子度宜較高，反之則應(yīng)較低。據(jù)克拉克的報(bào)告，澳州的糖廠常用20%陰離子度的聚丙烯酰胺，而美國(guó)佛羅里達(dá)州的糖廠常用較高的數(shù)值。Cress等的研究發(fā)現(xiàn)，在蔗汁中加絮凝劑和除去沉淀物以后，殘留的聚丙烯酰胺量與聚丙烯酰胺原來(lái)的陰離子度有關(guān)。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　某些天然的高分子有機(jī)物例如含羧基較多的多聚糖和含磷酸基較多的淀粉都有絮凝性能。用化學(xué)方法在大分子中引入活性基團(tuán)可提高這種性能，如將一種天然多糖進(jìn)行醚化反應(yīng)引入羧基、酰胺基等活性基團(tuán)后，絮凝性能較好，可加速蔗汁沉降。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　將天然的高分子物質(zhì)如淀粉、纖維素、殼聚糖等與丙烯酰胺進(jìn)行接枝共聚，聚合物有良好的絮凝性能，或兼有某些特殊的性能。國(guó)內(nèi)研制的一些產(chǎn)品，曾在幾個(gè)糖廠試用，有較好效果。目前在國(guó)內(nèi)外糖廠使用廣泛的絮凝劑，是合成的聚丙烯酰胺系列產(chǎn)品，它們的發(fā)展提高較快，在制糖工業(yè)的多種流程中普遍使用。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　現(xiàn)代生產(chǎn)的工業(yè)聚丙烯酰胺有多種不同陰離子度的產(chǎn)品，用戶可根據(jù)需要和通過(guò)實(shí)際試驗(yàn)選用適當(dāng)?shù)钠贩N，不需要再行水解，溶解以后即可使用。</span></div><div><span style="font-size: 16px;">　　</span></div><div><span style="font-size: 16px;">　　由于習(xí)慣的原因，有些人仍將絮凝劑的溶解過(guò)程稱為水解。應(yīng)當(dāng)注意，水解的含義是加水分解，是化學(xué)反應(yīng)，聚丙烯酰胺的水解有氨氣放出；而溶解只是物理作用，無(wú)化學(xué)反應(yīng)。兩者的本質(zhì)不同，不應(yīng)混為一談。</span></div></div> <div id="53tf3zn" class="ye">上一篇：<a href="/Article-1127853.html">陰離子和陽(yáng)離子聚丙烯酰胺PAM絮凝劑有什么不同？</a> 下一篇：<a href="/Article-1105746.html">一文了解高分子聚丙烯酰胺的技術(shù)指標(biāo)</a></div> </div>  </div>  </div> </div> </div> </div> </article> </div> <div id="rt5xp3l" class="clear"></div> </section>   <div id="bzfjbpb" class="footer"> <div id="xxr3tnn" class="footer_in"> <div id="jrlrhjj" class="info clearfix"> <ul> <li><a href="/">首頁(yè)</a></li> <li>|</li> <li><a href="/aboutus.html" rel="nofollow">關(guān)于我們</a></li> <li>|</li> <li><a href="/products.html">產(chǎn)品展示</a></li> <li>|</li> <li><a href="/news.html">新聞資訊</a></li> <li>|</li> <li><a href="/article.html">技術(shù)文章</a></li> <li>|</li> <li><a href="/order.html" rel="nofollow">在線留言</a></li> <li>|</li> <li><a rel="nofollow">在線商鋪</a></li> <li>|</li> <li><a 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