本文選題：城市污泥 + 水煤漿　； 參考：《煤炭學(xué)報(bào)》2017年06期

【摘要】：采制城市污泥樣品和煤樣,采用傅里葉變換紅外光譜和掃描電子顯微鏡表征污泥樣品的組成特征和微觀形貌,測(cè)定污泥顆粒和煤顆粒對(duì)聚羧酸型分散劑SAF的吸附等溫線、研究吸附動(dòng)力學(xué)。此外,制備了污泥水煤漿并考察污泥摻加量與分散劑用量對(duì)水煤漿濃度的影響。結(jié)果表明,污泥中存在極強(qiáng)的分子間氫鍵締合羥基,并含有大量由絲狀微生物等形成的絮凝體結(jié)構(gòu);污泥顆粒對(duì)分散劑的飽和吸附量為7.98 mg/g,大于煤顆粒對(duì)分散劑的飽和吸附量4.91 mg/g;污泥顆粒對(duì)分散劑的吸附基本符合一級(jí)動(dòng)力學(xué)方程,而煤顆粒對(duì)分散劑的吸附符合二級(jí)動(dòng)力學(xué)方程,且分散劑在污泥顆粒形成的空隙中的擴(kuò)散是決定吸附過程的主要因素;隨污泥摻加量的增大,污泥水煤漿的定黏濃度降低、成漿性變差。污泥的組成、結(jié)構(gòu)特征造成了成漿體系中污泥和煤對(duì)分散劑的競(jìng)爭(zhēng)吸附,是影響污泥水煤漿成漿特性的重要因素,可以通過增加分散劑的用量來改善污泥水煤漿的成漿性。
[Abstract]:Urban sludge samples and coal samples were collected. The composition and morphology of sludge samples were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The adsorption isotherms of sludge particles and coal particles on polycarboxylic acid dispersant SAF were determined. Adsorption kinetics was studied. In addition, sludge coal water slurry was prepared and the effects of sludge admixture and dispersant dosage on the concentration of coal water slurry were investigated. The results showed that there was a strong intermolecular hydrogen bond associated hydroxyl group in the sludge and a large number of flocculant structures formed by filamentous microorganisms. The saturated adsorption capacity of sludge particles on dispersant is 7.98 mg / g, which is larger than that of coal particle on dispersant 4.91 mg / g, and the adsorption of sludge particle on dispersant basically accords with first-order kinetic equation. The adsorption of coal particles to dispersant conforms to the second-order kinetic equation, and the diffusion of dispersant in the void formed by sludge particles is the main factor that determines the adsorption process, and the fixed viscosity concentration of coal water slurry decreases with the increase of sludge content. The pulping property becomes worse. The composition and structure characteristics of sludge cause the competitive adsorption of sludge and coal to dispersant in slurry system. It is an important factor that affects the slurry characteristics of sludge coal water slurry. The slurry properties of sludge coal water slurry can be improved by increasing the amount of dispersant.
【作者單位】： 華北科技學(xué)院環(huán)境工程學(xué)院;中國(guó)礦業(yè)大學(xué)化工學(xué)院;煤炭加工與高效潔凈利用教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)礦業(yè)大學(xué)現(xiàn)代分析與計(jì)算中心;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51204179,51204182) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2014XT05)
【分類號(hào)】：TQ536;X703

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 Ma Shaolian;Wu Guoguang;Meng Xianliang;Zhou Rui;Chu Ruizhi;Miao Zhenyong;Qi Yueming;;Characteristics of coal sludge slurry prepared by a wet-grinding process[J];International Journal of Mining Science and Technology;2016年05期

2 朱潔豐;劉建忠;胡亞軒;程軍;周俊虎;岑可法;;微波輻照對(duì)錫盟褐煤成漿性能的影響[J];煤炭學(xué)報(bào);2015年S1期

3 Lingyun Jin;Guangming Zhang;Xiang Zheng;;Effects of different sludge disintegration methods on sludge moisture distribution and dewatering performance[J];Journal of Environmental Sciences;2015年02期

4 王俊哲;王渝崗;張建安;李增林;巨鵬;何釗;方世劍;閆立倉;;煤粉的分形特征及其對(duì)水煤漿級(jí)配的影響[J];煤炭學(xué)報(bào);2014年05期

5 黃冰冰;劉猛;段鈺鋒;陳高森;馬貴林;王素美;;污泥增強(qiáng)水焦?jié){穩(wěn)定性的機(jī)制及理論分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2014年17期

6 段清兵;何國(guó)鋒;王國(guó)房;杜麗偉;張勝局;顏淑娟;張桂玲;王燕芳;;利用堿性物質(zhì)對(duì)污泥改性制備污泥水煤漿的實(shí)驗(yàn)研究[J];潔凈煤技術(shù);2014年01期

7 劉錦啟;陳前林;王景行;;添加劑對(duì)無煙煤灰熔點(diǎn)和成漿性能的影響[J];煤炭學(xué)報(bào);2013年S2期

8 王國(guó)房;;堿木質(zhì)素改性制備氣化水煤漿添加劑[J];煤炭學(xué)報(bào);2013年04期

9 趙方;張光華;朱軍峰;石麗麗;徐海龍;;淀粉水煤漿分散劑的制備及性能研究[J];煤炭學(xué)報(bào);2012年S2期

10 Shi Frank;;A comparative investigation of the properties of coal-water slurries prepared from Australia and Shenhua coals[J];Mining Science and Technology;2011年03期

【共引文獻(xiàn)】

相關(guān)期刊論文 前10條

1 馬少蓮;吳國(guó)光;孟獻(xiàn)梁;苗真勇;褚睿智;周蕊;;污泥對(duì)分散劑的吸附及其對(duì)污泥水煤漿成漿特性的影響[J];煤炭學(xué)報(bào);2017年06期

2 尚慶雨;;分級(jí)研磨煤漿提濃技術(shù)在煤化工行業(yè)應(yīng)用新進(jìn)展[J];煤化工;2017年02期

3 沈宏武;豐蕓;趙東升;石e醵，

本文編號(hào)：2105397