【摘要】：采用等溫氮?dú)馕椒▽?duì)添加醋酸鈣鎂前后的污泥半焦顆粒表面孔隙的變化特性進(jìn)行了測(cè)量分析,并引入分形維數(shù)對(duì)其進(jìn)行定量的描述.研究結(jié)果表明,污泥及混合試樣的孔結(jié)構(gòu)絕大多數(shù)為中孔和大孔;總孔容均隨鈣硫比的增加而減小;BET比表面積和中孔容積隨鈣硫比有相同變化趨勢(shì).分別計(jì)算低壓段(P/P_00.4)和高壓段(P/P_00.4)孔隙結(jié)構(gòu)的分形維數(shù)D_1和D_2,發(fā)現(xiàn)D_1和平均孔徑發(fā)展趨勢(shì)相同,而D_2卻與BET比表面積變化趨勢(shì)相同.
[Abstract]:The pore characteristics of sludge semi-coke particles before and after the addition of calcium magnesium acetate were measured and analyzed by isothermal nitrogen adsorption method, and fractal dimension was introduced to describe them quantitatively. The results show that the pore structures of sludge and mixed samples are mostly mesoporous and macroporous, and the total pore volume decreases with the increase of the ratio of calcium to sulfur, and the specific surface area and mesoporous volume of BET decrease with the ratio of calcium to sulfur. The fractal dimension D _ 1 and D _ 2 of the pore structure of P / P _ S _ 0 _ 0.4 and P / P _ T _ 0 _ 0.4 are calculated, respectively. It is found that the development trend of D _ 1 and average pore size is the same, but that of D _ (2) is the same as that of BET.
【作者單位】： 東南大學(xué)能源熱轉(zhuǎn)換及其過(guò)程測(cè)控教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：“十二五”國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2015BAD21B06) 國(guó)家重點(diǎn)基礎(chǔ)發(fā)展計(jì)劃(973計(jì)劃)資助項(xiàng)目(2013CB228103) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目 江蘇省高校研究生科技創(chuàng)新計(jì)劃資助項(xiàng)目(KYLX15-0070) 東南大學(xué)優(yōu)秀博士論文基金資助項(xiàng)目
【分類號(hào)】：X703

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