|
|
Ammonia stripping of fly ash slurry and its paste preparation characteristics |
LI Ya-jiao1, LI Hong-cheng1, WANG Tie2, JU Kai1, JIN Peng-kang3, TANG Ren-long4, SHAO Xiao-ping4, ZHAO Bing-chao4, REN Wu-ang1 |
1. College of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China; 2. Shaanxi Binchang Mining Group Co. LTD, Xianyang 712000, China; 3. Xi'an Jiaotong University School of Human Settlements Environment, Xi'an 710040, China; 4. College of Energy Engineering, Xi'an University of Science and Technology, Xi'an 710054, China |
|
|
Abstract In order to improve the adverse effects of ammonia-containing fly ash on the performance of filling paste and improve the utilization rate of fly ash, the air stripping of fly ash slurry was used to remove ammonia in the experiment. The effects of stripping time, air-slurry ratio, solid-liquid ratio, temperature and alkali addition on the ammonia removal rate of fly ash were investigated. The results showed that the stripping conditions were optimized by response surface methodology, and the stripping time was 1h, the gas-slurry ratio was 900, the solid-liquid ratio was 0.219, the temperature was 26.785°C and the alkali dosage was 1.802%. The predicted total ammonia removal rate was up to 97.178%, and the actual error rate was within 2%. The fly ash filling paste prepared after optimized stripping has only a small amount of ammonia release in the early stage of curing, and its pumping performance and microstructure are improved compared with the original ammonia-containing fly ash paste. After 28days of curing, the compressive strength is increased by up to 57%.
|
Received: 25 July 2023
|
|
Corresponding Authors:
任武昂,讲师,wuangren004479@xust.edu.cn
E-mail: wuangren004479@xust.edu.cn
|
|
|
|
[1] 中华人民共和国生态环境部.2014~2020年全国大、中城市固体废物污染环境防治年报[EB/OL]. https://www.mee.gov.cn/, 2020-12- 28. Ministry of Ecological Environment of the People's Republic of China. Annual report on environmental prevention and control of solid waste pollution in large and medium-sized cities in China from 2014 to 2020[EB/OL]. https://www.mee.gov.cn/, 2020-12-28. [2] 何光耀,王兵,史鹏程,等.粉煤灰基沸石分子筛的合成及应用进展[J]. 洁净煤技术, 2021,27(3):48-60. He G Y, W B, Shi P C, et al. Recent progress of synthesis and application of fly ash based zeolite[J]. Clean Coal Technology, 2021,27(3):48-60. [3] 李琴,杨岳斌,刘君,等.我国粉煤灰利用现状及展望[J]. 能源研究与管理, 2022,(1):29-34. Li Q, Yang Y B, Liu J, et al. Present status and prospect of fly ash utilization in China[J]. Energy Research and Management, 2022, (1):29-34. [4] 张吉雄,缪协兴,郭广礼.矸石(固体废物)直接充填采煤技术发展现状[J]. 采矿与安全工程学报, 2009,26(4):395-401. Zhang J X, Miao X X, Guo G L. Development status of backfilling technology using raw waste in coal mining, 2009,26(4):395-401. [5] 任昂,冯国瑞,郭育霞,等.粉煤灰对煤矿充填膏体性能的影响[J]. 煤炭学报, 2014,39(12):2374-2380. Ren A, Feng G R, Guo Y X, et al. Influence on performance of coal mine filling paste with fly ash[J]. Journal of China Coal Society, 2014, 39(12):2374-2380. [6] 刘音,王凯,郭皓,等.含氨粉煤灰对充填膏体性能影响试验研究[J]. 煤炭工程, 2020,52(10):149-153. Liu Y, Wang K, Guo H, et al. Experimental study on the effect of ammonia in fly ash on the filling paste performance[J]. Coal Engineering, 2020,52(10):149-153. [7] GB/T 39701-2020粉煤灰中铵离子含量的限量及检验方法[S]. GB/T 39701-2020 Limit and test method of ammonium ion content in fly ash[S]. [8] 夏珍珍,邢立新,杨柳,等.粉煤灰铵离子对水泥性能的影响[J]. 水泥技术, 2022,(2):64-67,73. Xia Z Z, Xing L X, Yang L, et al. Study on the influence of ammonium ions on cement properties in fly ash[J]. Cement Technology, 2022, (2):64-67,73. [9] Air F, Silo A F. ERC completes development of technique for removing ammonia LAMTON K B from fly ash[J]. Lehigh Energy Update, 2002,20(1):1-2. [10] Hinton w S, Cushing K, Ammonia removal from fly ash:Process review-separation technologies LLC (ST)-ammonia removal process[R]. California:Electric Power Research Institute, 2007. [11] Kastner J R, Miller J, Kolar P, et al. Catalytic ozonation of ammonia using biomass char and wood fly ash[J]. Chemosphere, 2009,75(6):739-744. [12] Gao Y, Chen X, Fujisaki G, et al. Dry and semi-dry methods for removal of ammonia from pulverized fuel combustion fly ash[J]. Energy & fuels, 2002,16(6):1398-1404. [13] 张静园,明金阳,曾现磊.浅析一般半导体厂废水处理站工艺管理措施[J]. 环境工程, 2023,41(S1):21-22,120. Zhang J Y, Ming J Y, Zeng X L. Analysis of process management measures of wastewater treatment station in general semiconductor factory[J]. Environmental Engineering, 2023,41(S1):21-22,120. [14] 梁登科.脱硝过程伴生硫酸氢氨对于烟气灰颗粒性质影响的实验研究[D]. 济南:山东大学, 2014. Liang D K. Experimental research on the effects to flue ash particles characteristics of NH4HSO4 generating during the denitrification process[D]. Jinan:Shandong University, 2014. [15] 李亚娇,赵艺伟,鞠恺,等.基于响应面法的粉煤灰氨含量测定过程浸提条件优化研究[J]. 无机盐工业, 2022,54(4):145-151. Li Y J, Zhao Y W, Ju K, et al. Study on optimization of extraction conditions in process of determination of ammonia content in fly ash based on response surface method[J]. Inorganic Chemicals Industry, 2022,54(4):145-151. [16] HJ 535-2009水质.氨氮的测定.纳氏试剂分光光度法[S]. HJ 535-2009 Water quality. Determination of ammonia nitrogen. Nessler's reagent spectrophotometry[S]. [17] 邓杨,朱磊,李响,等.空气吹脱法去除焦化废水中的氨氮[J]. 水处理技术, 2023,49(5):106-109. Deng Y, Zhu L, Li X, et al. Removal of ammonia nitrogen from coking wastewater by air stripping[J]. Technology of Water Treatment, 2023, 49(5):106-109. [18] 向美.PBAT生物降解地膜中胺类添加剂的色谱分析及对烟草氮代谢的影响研究[D]. 贵州:贵州师范大学, 2022. Xiang M. Chromatographic analysis of amine additives in PBAT biodegradable plastic film and its effect on nitrogen metabolism in nicotiana tabacum L[D]. Guizhou:Guizhou Normal University, 2022. [19] 曾静,吴可君,何潮洪.低共熔溶剂用于钴酸锂-铜混合粉末的选择性浸出研究[J]. 高校化学工程学报, 2023,37(1):38-44. Zeng J, Wu K J, He C H. Study of selective leaching of lithium cobalt oxide and copper mixtures by deep eutectic solvents[J]. Journal of Chemical Engineering of Chinese Universities, 2023,37(1):38-44. [20] 郑跃武,孟子衡,练领先,等.电石渣湿法脱硫过程亚硫酸钙强制氧化及杂质影响规律[J]. 过程工程学报, 2023,23(12):1725-1738. Zheng Y W, Meng Z H, Lian L X, et al. Forced oxidation of calcium sulfite and the influence of impurities in wet desulfurization by calcium carbide slag[J]. The Chinese Journal of Process Engineering, 2023, 23(12):1725-1738. [21] 罗军,张欢,赖祖明.影响解氨剂-吹脱法处理高浓度氨氮废水的单因素实验研究[J]. 科技创新与应用, 2022,12(12):122-125. Luo J, Zhang H, Lai Z M. Single factor experimental study on the treatment of high concentration ammonia nitrogen wastewater by ammonia-dissolving agent-stripping method[J]. Technology Innovation and Application, 2022,12(12):122-125. [22] 高燕,伍鹏,尚超,等.基于双流体喷嘴的磁性琼脂糖微球的制备及其蛋白吸附性能探究[J]. 化工学报, 2023,74(8):3457-3471. Gao Y, Wu P, Shang C, et al. Preparation of magnetic agarose microspheres based on a two-fluid nozzle and their protein adsorption properties[J]. CIESC Journal, 2023,74(8):3457-3471. [23] Nakatsuchi Y, Kido H, Hamasaki A, et al. Novel prediction model based on two-film theory for ammonia distribution coefficient in heat recovery steam generator of gas turbine combined cycle power plants[J]. Journal of Chemical Engineering of Japan, 2022,55(9):281-289. [24] 谢文,田峰,周崇旭,等.考虑水泥水化度的混凝土一维差分法理论温升计算[J]. 工业建筑, 2023,53(10):126-134. Xie W, Tian F, Zhou C X, et al. A calculation of theoretical temperature rise of concrete by one-dimensional difference method considering cement hydration[J]. Industrial Construction, 2023,53(10):126-134. [25] 刘音,闵令冉,王春春,等.拌合水物化性质对充填膏体力学性能的影响[J]. 矿业研究与开发, 2023,43(10):34-42. Liu Y, Min L R, Wang C C, et al. The influence of physicochemical properties of mixing water on mechanical properties of filling paste[J]. Mining Research and Development, 2023,43(10):34-42. [26] 公丕学,廉贞霞,薛霞,等.UPLC-MS/MS测定婴幼儿配方乳粉中双酚A和壬基酚[J].食品工业科技, 2019,40(17):238-243,250. Gong P X, Lian Z X, Xie X, et al. Determination of bisphenol a and nonylphenol in infant formula milk powder by UPLC-MS/MS[J]. Science and Technology of Food Industry, 2019,40(17):238-243,250. [27] 席一梅.光照对盐生杜氏藻积累β-胡萝卜素过程影响的精准分析及机制探究[D]. 大连:大连理工大学, 2021. Xi Y M. Precise analysis on effect of light to β-carotene accumulation in dunaliella salina and its mechanism[D]. Dalian:Dalian University of Technology, 2021. [28] Shou L, Hayes J, Cheng W, et al. Characterization of ammonia gas release from concrete added with ammoniated fly ash[J]. Air Quality, Atmosphere & Health, 2014,7:505-513. [29] 陈雯.后掺骨料混凝土抗碳化性能试验研究[D]. 大连:大连理工大学, 2022. Chen W. Experimental study on anti-carbonation performance of after-mixing coarse aggregate concrete[D]. Dalian:Dalian University of Technology, 2022. [30] Mazanec O, Lowke D, Schießl P. Mixing of high performance concrete:effect of concrete composition and mixing intensity on mixing time[J]. Materials and structures, 2010,43:357-365. [31] Roy D.M., Asaga K. Rheological properties of cement mixes:III. The effects of mixing procedures on viscometric properties of mixes containing superplasticizers[J]. Cement and Concrete Research, 1979,9(6):731-739. [32] 闫泽鹏,尹升华,严荣富,等.搅拌时间对粗骨料膏体均质性及早期强度的影响[J]. 中国有色金属学报, 2022,32(4):1164-1174. Yan Z P, Yin S H, Yan R F, et al. Effect of mixing time on homogeneity and early strength of coarse aggregate paste[J]. The Chinese Journal of Nonferrous Metals, 2022,32(4):1164-1174. [33] 贺云飞.脱硝粉煤灰氨释放与留存对水泥混凝土性能的影响[D]. 重庆:重庆大学, 2019. He Y F. Effect of ammonia release and retention of ammoniated fly ash on the performance of cement concrete[D]. Chongqing:Chongqing University, 2019. [34] Provis J L, Palomo A, Shi C. Advances in understanding alkali- activated materials[J]. Cement and Concrete Research, 2015,78:110- 125. [35] 杨文言.不同养护条件下生成的钙矾石的显微形貌[J]. 电子显微学报, 2000,2000(4):523-524. Yang W Y. The micromorphology of ettringite formed under different curing conditions[J]. Journal of Chinese Electron Microscopy Society, 2000,2000(4):523-524. [36] 尹博.粉煤灰膏体充填材料及其改性与应用研究[D]. 太原:太原理工大学, 2018. Yin B. Research on the fly ash cemented filling materials and its modification and further application[D]. Taiyuan:Taiyuan University of Technology, 2018. [37] 姜关照.双工况下半水磷石膏基膏体流变及管阻时间效应[D]. 北京:北京科技大学, 2022. Jiang G Z. Time effect of rheological behavior and pipeline resistance of hemihydrate phosphogypsum-based paste under two working conditions[D]. Beijing:University of Science and Technology Beijing, 2022. |
|
|
|