日期:2018/7/10瀏覽:935次
全自動精密微孔過濾機過濾精度從0.5微米提高至0.2微米:經(jīng)不斷研制,無論用于液固過濾或氣固過濾,剛性微孔過濾介質(zhì)的過濾精度已從上世紀(jì)的0.5微米逐步提高至0.3微米,并已開始達到0.2微米,現(xiàn)以過濾細至0.2微米的超細粉末活性碳作說明。表一給出這種超細粉末活性碳的顆粒粒徑分布數(shù)據(jù)。采用一種規(guī)格的微孔PA管過濾該超細活性碳與水的懸浮物(活性碳濃度10%),過濾的平均濾速為0.5米3/米2·小時,濾后取1000毫升濾液,用φ50mm,0.22微米的微孔膜進行檢測過濾,在顯微鏡下觀察濾后的微孔膜,發(fā)現(xiàn)膜上無任何黑點。說明濾液中無任何大于0.22微米的碳黑點。這表明,該微孔PE管的過濾精度已達到0.2微米的數(shù)量級?,F(xiàn)在該技術(shù)已在制藥與化工生產(chǎn)上廣泛應(yīng)用。
超細粉末活性碳的顆粒粒徑分布
粒徑(μm) |
分布頻度(%) |
<0.188 |
0 |
0.188~0.1906 |
3% |
0.1906~0.206 |
7% |
0.206~0.227 |
21.82% |
0.227~0.249 |
0.157% |
0.249~0.274 |
17.9% |
0.274~0.301 |
2.39% |
0.301~0.331 |
1.32% |
0.331~0.364 |
2.11% |
超細氧化鋁粉體的顆粒分布
粒徑(μm) |
分布頻度(%) |
<0.0345 |
3% |
0.0345~0.1149 |
7% |
0.1149~0.188 |
6.37% |
0.188~0.206 |
2.39% |
0.206~0.227 |
6.81% |
0.227~0.249 |
9.26% |
0.249~0.274 |
6.48% |
0.274~0.301 |
4.93% |
0.301~0.331 |
8.54% |
0.331~0.364 |
7.94% |
0.364~0.400 |
2.30% |
0.40~0.44 |
3.64% |
0.44~0.483 |
3.77% |
0.483~0.531 |
3.49% |
0.531~0.584 |
3.06% |
0.584~0.642 |
2.66% |
0.642~0.706 |
2.60% |
0.706~0.776 |
2.18% |
0.776~0.853 |
1.71% |
鈷酸鋰超細粉體的顆粒分布
粒徑(μm) |
分布頻度(%) |
<0.173 |
3% |
0.173~0.193 |
7% |
0.193~0.206 |
20.06% |
0.206~0.249 |
24.77% |
0.249~0.274 |
14.68% |
0.274~0.331 |
2.82% |
0.331~0.364 |
3.57% |
0.364~0.400 |
2.36% |
0.400~0.44 |
1.82% |
0.44~0.483 |
2.17% |
0.483~0.531 |
1.54% |
0.531~0.584 |
1.73% |
超細二氧化硅粉體顆粒分布
粒徑(μm) |
分布頻度(%) |
0.046 |
0% |
0.046~0.0471 |
3% |
0.0471~0.051 |
8.43% |
0.051~0.062 |
0.569% |
0.062~0.068 |
0.587% |
0.068~0.075 |
6.59% |
0.075~0.082 |
3.95% |
0.082~0.091 |
3.44% |
0.091~0.100 |
5.7% |
0.100~0.110 |
6.149% |
0.110~0.121 |
5.69% |
0.121~0.134 |
2.25% |
0.134~0.147 |
5.20% |
0.147~0.162 |
4.86% |
0.162~0.179 |
4.38% |
0.179~0.197 |
3.90% |
0.197~0.217 |
3.55% |
0.217~0.239 |
3.54% |
0.239~0.263 |
3.09% |
0.263~0.289 |
2.94% |
0.289~0.319 |
2.43% |
0.319~0.351 |
2.21% |
0.351~0.387 |
2.03% |
0.387~0.426 |
1.97% |
微孔PE管過濾空氣中塵埃的過濾效率測定值
測試條件 |
氣溫 |
40℃ |
每一個測試數(shù)據(jù)均持續(xù)維持1小時 |
||
濕度 |
23~32% |
||||
氣體壓力 |
0.2MPa |
||||
空氣中塵埃濃度 |
每呎3最多16萬顆 |
||||
測試數(shù)據(jù) |
空氣濾速 (米3/米2·分) |
過濾壓差 (mm水柱) |
過濾效率 |
||
0.3μm |
0.5μm |
1μm |
|||
1.38 |
28 |
100 |
100 |
100 |
|
2.82 |
81 |
99.89 |
99.90 |
99.84 |
|
5.58 |
196 |
99.58 |
99.89 |
99.98 |
|
6.96 |
261 |
99.96 |
99.94 |
99.85 |
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