【摘要】：采用微波熱解技術(shù),通過改變微波功率、熱解溫度、氣體和固體停留時間、添加催化劑,探究印染污泥熱解的特性。采用元素分析、掃描電鏡(SEM)、BET比表面積儀、X射線熒光光譜儀(XRF)、X射線衍射儀(XRD)和電感耦合等離子體質(zhì)譜儀(ICP-MS)對印染污泥和泥炭進(jìn)行了分析。實(shí)驗(yàn)結(jié)果表明,隨著溫度的升高,泥炭產(chǎn)率逐漸降低,750℃時降到63.87%(質(zhì)量);氣體產(chǎn)率隨溫度逐漸增加。添加Ca O和Fe,泥炭產(chǎn)率增加,不可凝氣體中CO2含量減少,H_2、CO和CH_4含量增加,最大H_2含量達(dá)64.17%。隨著熱解溫度的升高,泥炭中C、H、N元素含量逐漸降低,S含量有所升高。熱解溫度在550℃時,泥炭的比表面積達(dá)到最大值91.9 m~2·g~(-1)。經(jīng)微波熱解后,污泥中的重金屬符合農(nóng)業(yè)排放標(biāo)準(zhǔn)的要求。
[Abstract]:The pyrolysis characteristics of printing and dyeing sludge were studied by changing microwave power, pyrolysis temperature, gas and solid residence time and adding catalyst. Printing and dyeing sludge and peat were analyzed by elemental analysis, scanning electron microscope (SEM), BET specific surface product instrument, X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD) and inductively coupled plasma mass spectrometer (ICP-MS). The experimental results show that with the increase of temperature, the peat yield decreases gradually, which decreases to 63.87% (mass) at 750 鈩，

本文編號：2506244