煤焦油渣的组成分析与吸附性能研究  

Compositional analysis and adsorption properties of coal tar residue

作　　者：高磊[1] 董发勤[1] 钟国清[1] 代群威[1] 

机构地区：[1]西南科技大学固体废物处理与资源化省部共建教育部重点实验室,四川绵阳621010

出　　处：《安全与环境学报》2011年第1期79-82,共4页Journal of Safety and Environment

基　　金：国家自然科学基金项目(10776027);绵阳市科技攻关项目(200238340)

摘　　要：对采自陕西愉林地区的某煤焦油渣元素组成、XRF、XRI)、TC/DSC的分析结果表明,其主要成分为碳,约55.52%～80.18%,且主要处于小颗粒不规则非晶相状态,活化性能好,其中重金属以及微量元素Cr、Ni含量较少,制备吸附材料不会产生二次污染。氮气保护条件下,600℃左右的失重率为69.15%～88 99%隔绝氧气条件下,6001℃物理高温活化改渣2 h,同时于25℃、247r/min试验条件下根据GB/T 12496.8—1999测得物理活化后渣碘值、亚甲基蓝值标定的吸附性能指标分别为400～500 mg./g、66～150 mg/g。同等试验条件下分析纯活性炭碘值为855.30 mg/g,亚甲基蓝吸附值为200.17 mg/g。说明煤焦油渣改性后作吸附材料是可行性的,且成本低,可利用价值高。The characteristics of coal tar residue sample collected from Yu line of Shaanxi Province were determined with various techniques including elemental analysis, X-ray fluorescence, X-ray diffraction and thermography-dynamic stability control. The results showed that the main component of coal tar residue was composed by carbon with approximately 55.52 % - 80.18 % proportion. The sample has exhibited good criteria of activation due to its irregular amorphous structure and small particles. In addition, the adsorbent prepared from coal tar residue would not generate secondary pollution because of it low heavy metals content. The weight-loss ratio of coal tar residue was 69.15%- 88.99% at 600 ℃ heating under the atmosphere of N2. After modified with 600℃ heating and oxygen flow cutting for 2 hours, the adsorption properties of physical activated coal tar residue were tested at 25 ℃ and 247 r/min by using iodine and methylene blue according to GB/T 12496.8-1999. The adsorption capacity was recorded as 400 - 500 mg/g and 100 - 150 mg/g, respectively. Meanwhile, the iodine and methylene blue adsorption capacity of analytically pure activity carbon were determined as 855.30 mg/g and 200.17 mg/g, respectively. The results indicated that the modification of coal tar residue is practical for the preparation of low cost and efficient activated carbon.

关 键 词：环境工程学 煤焦油渣 组成 活化 吸附性能 

分 类 号：X705[环境科学与工程—环境工程]