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style="text-align:left;">D201是在大孔結(jié)構(gòu)的苯乙烯-二乙烯苯共聚體上帶有季銨基[-N(CH3)3OH]的陰離子交換樹(shù)脂。主要用于純水、高純水制備及凝結(jié)凈化，還用于廢水處理和重金屬回收。</p><p style="text-align:left;">理化性能指標(biāo)：</p><p style="text-align:left;">指標(biāo)名稱</p><p style="text-align:left;">指標(biāo)</p><p style="text-align:left;">外觀：</p><p style="text-align:left;">乳白至淡黃色不透明球狀顆粒</p><p style="text-align:left;">出廠型式：</p><p style="text-align:left;">氯型</p><p style="text-align:left;">含水量：</p><p style="text-align:left;">50.00-60.00</p><p style="text-align:left;">質(zhì)量全交換容量 mmol/g ：</p><p style="text-align:left;">≥3.8</p><p style="text-align:left;">體積全交換容量 mmol/ml ：</p><p style="text-align:left;">≥1.2</p><p style="text-align:left;">濕視密度 g/ml ：</p><p style="text-align:left;">0.65-0.73</p><p style="text-align:left;">濕真密度 g/ml ：</p><p style="text-align:left;">1.060-1.100</p><p style="text-align:left;">范圍粒度：</p><p style="text-align:left;">(0.315-1.25mm)≥95</p><p style="text-align:left;">下限粒度：</p><p style="text-align:left;">(<0.315mm)≤1</p><p style="text-align:left;">有效粒徑 mm ：</p><p style="text-align:left;">0.400-0.700</p><p style="text-align:left;">均一系數(shù) ：</p><p style="text-align:left;">≤1.60</p><p style="text-align:left;">磨后圓球率：</p><p style="text-align:left;">≥90</p><p style="text-align:left;">使用時(shí)參考指標(biāo)：</p><p style="text-align:left;">指標(biāo)名稱</p><p style="text-align:left;">指標(biāo)</p><p style="text-align:left;">pH范圍</p><p style="text-align:left;">1-14</p><p style="text-align:left;">高使用溫度°C</p><p style="text-align:left;">80</p><p style="text-align:left;">轉(zhuǎn)型膨脹率(Na+-H+)</p><p style="text-align:left;">≤20</p><p style="text-align:left;">工作交換容量 mmol/L</p><p style="text-align:left;">≥400</p><p style="text-align:left;">運(yùn)行流速 m/h</p><p style="text-align:left;">15-30</p><p>d201大孔強(qiáng)堿性陰離子交換樹(shù)脂的故障排查與處理方法1、石英砂墊層亂層</p><p><br/></p><p>　　交換器底部選用石英砂墊層時(shí)，因反洗操作不當(dāng)或積污，會(huì)造成石英砂層結(jié)塊;若反洗水從局部沖出則會(huì)造成石英砂墊層亂層。石英砂墊層下面的穹型多孔板的中心，應(yīng)不開(kāi)孔，以避免底部進(jìn)水流速過(guò)高沖亂石英砂層。如果穹型板是全部開(kāi)孔的，可以在穹型多孔板下面加裝擋板，但是，不可使用縫隙式噴水頭或多孔式花籃，因?yàn)樗鼈兊某鏊魉偬?，距穹型板又近，仍然?huì)使水流集中于局部小孔噴出，沖亂石英砂層。石英砂墊層應(yīng)嚴(yán)格按照級(jí)配逐層鋪墊，每層的厚度必須均勻。在裝入樹(shù)脂前，可以進(jìn)行反洗試驗(yàn)，要求在流速達(dá)到40-60m/h時(shí)，石英砂墊層不亂層，不移動(dòng)。</p><p></p><p>離子交換樹(shù)脂</p><p>　　2、中間排液裝置的損壞</p><p>　　逆流再生離子交換器的中排裝置損壞是常見(jiàn)的故障。中排裝置損壞的根本原因是，在樹(shù)脂層中有氣泡或干層的情況下，反洗進(jìn)水流速過(guò)高，樹(shù)脂層尚未散開(kāi)，樹(shù)脂的流動(dòng)性差，夾在干樹(shù)脂層中的中間排液裝置被向上托起而造成的。在運(yùn)行中因樹(shù)脂干層收縮，也會(huì)造成中排支管的向下彎曲。在陽(yáng)床的運(yùn)行中，樹(shù)脂層內(nèi)出現(xiàn)氣泡是因?yàn)殛?yáng)床用進(jìn)口閥門(mén)調(diào)節(jié)流量，交換器在低壓(0.1-0.2Mpa)下運(yùn)行，經(jīng)交換反應(yīng)生成的碳酸變?yōu)橛坞x的CO2析出，積聚在樹(shù)脂層內(nèi)。防止CO2析出的方法是保持交換器在0.4-0.6Mpa壓力下運(yùn)行。此外，如果水泵軸封漏氣，也會(huì)使空氣隨水流進(jìn)入交換器，積在樹(shù)脂層中。特別應(yīng)該指出的是設(shè)備長(zhǎng)期停用或因閥門(mén)漏水造成樹(shù)脂干層時(shí)，進(jìn)水速度一定要緩慢(2-3m/h)，使樹(shù)脂層中的氣泡能慢慢逸出，不得將干樹(shù)脂層托起。中間排液裝置必須牢固地固定在專用的支架上，為防止中排裝置的損壞，國(guó)外曾將支管從圓形改為橢圓形(或燈泡形狀)，以減緩反洗時(shí)造成的沖擊。也可將母管露置在樹(shù)脂層上部50mm處，其支管或水帽插入樹(shù)脂層中需要的高度，以減少樹(shù)脂層脹縮時(shí)對(duì)中排裝置的沖擊。開(kāi)始反洗時(shí)，流量應(yīng)小，待樹(shù)脂層內(nèi)氣泡被排出，樹(shù)脂開(kāi)始浮動(dòng)后，再加大反洗流量。中排裝置應(yīng)用不銹鋼制成，加工制造及焊接應(yīng)牢固可靠。體內(nèi)再生的混床，其中排裝置的損壞也是常見(jiàn)的，高流速的混床更為嚴(yán)重。其防止措施與逆流再生交換器相同。</p><p></p><p>離子交換樹(shù)脂</p><p>　　3、頂部裝置的損壞</p><p>　　一般下向流運(yùn)行的交換器(如順流再生設(shè)備、逆流再生設(shè)備等)，其頂部裝置比較簡(jiǎn)單，很少損壞。上向流運(yùn)行的交換器(如浮床、雙室浮床等)，運(yùn)行時(shí)容易造成損壞。浮床的頂部裝置過(guò)去曾使用過(guò)母支管式、法蘭夾多孔板式、弧形支管式以及體外母管外插式等，經(jīng)過(guò)多年的研究和試驗(yàn)，證明使用孔板水帽式和弧形支管式效果較好。交換器頂部裝置損壞的主要原因是樹(shù)脂層頂部干層，底部進(jìn)水流速高時(shí)，樹(shù)脂層象活塞一樣壓向頂部裝置造成損壞。防止損壞的方法是先用小流量水流充滿樹(shù)脂層，再加大水的流量。另外一種損壞交換器頂部裝置的原因是，采用弱型樹(shù)脂的浮床，在裝填新樹(shù)脂時(shí)，未考慮足夠的可逆轉(zhuǎn)型和不可逆膨脹的空間，樹(shù)脂膨脹時(shí)會(huì)損壞交換器的頂部裝置。</p><p></p><p>離子交換樹(shù)脂</p><p>　　4、防腐涂層脫落問(wèn)題</p><p>　　目前，離子交換器內(nèi)的防腐涂層，普遍采用橡膠襯里，其耐蝕性能良好。在正常的使用條件下，壽命可達(dá)10-15年，不會(huì)脫落。但是，使用環(huán)氧樹(shù)脂涂料或玻璃鋼襯里的水處理設(shè)備，時(shí)常會(huì)發(fā)生涂層脫落。涂層脫落后，酸、堿性很強(qiáng)的介質(zhì)會(huì)對(duì)設(shè)備(鋼制或混凝土制)造成嚴(yán)重腐蝕，同時(shí)，其腐蝕產(chǎn)物還會(huì)嚴(yán)重污染樹(shù)脂和出水水質(zhì)。脫落的大片的環(huán)氧樹(shù)脂涂層或玻璃鋼還有可能覆蓋在布水裝置上，造成水流和再生液的偏流，使交換器不能正常運(yùn)行。發(fā)現(xiàn)涂層脫落時(shí)，應(yīng)及時(shí)對(duì)設(shè)備進(jìn)行檢修，將涂層脫落部分打磨、清洗干凈，重新涂敷防腐涂層。</p> 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