褐煤酸碱预处理-微生物气化联产H2-CH4的实验研究

夏大平1,2,3 陈曦1 王闯1 苏现波1,2,3

(1.河南理工大学能源科学与工程学院, 河南焦作 454000)
(2.中原经济区煤层 (页岩) 气河南省协同创新中心, 河南焦作 454000)
(3.河南理工大学深井瓦斯抽采与围岩控制技术国家地方联合工程实验室, 河南焦作 454000)

【摘要】为探讨酸、碱处理煤的发酵联产生物气生成特征, 对新疆伊宁矿区褐煤进行酸、碱预处理, 以焦作古汉山矿井水为菌源进行发酵联产H2-CH4实验。对联产后的产气量、气体组分、HPE活性、COD质量浓度进行测定分析, 对产气后煤样进行XRD和红外测试。结果发现:①碱处理煤的产氢效果最佳, 产气总量为20.25 m L/g, 酸处理煤次之为17.05 m L/g, 而原煤的产氢效果最差为14.4 m L/g;②HPE活性测定规律基本与之对应, 碱处理煤产氢后菌体的氢化酶活性最优为4.35 m L/ (mg·min) ;③酸处理煤的联产甲烷效果最好, 产气总量为23.35 m L/g, 而原煤和碱处理煤的联产甲烷效果基本一致;④联产中液相COD质量浓度均呈下降状态;⑤经预处理煤样的有机质降解率高, 大分子结构更易被降解。实验结果得出了预处理煤联产生物气的生成特征, 证实了联产H2-CH4有利于煤的资源化利用, 明显提升了能源转化率。

【关键词】 预处理; 发酵联产; 生物气; 生成特征;

【DOI】

【基金资助】 国家自然科学基金资助项目 (41472129, 41502158)

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This Article

ISSN:0253-9993

CN: 11-2190/TD

Vol 42, No. 12, Pages 3221-3228

December 2017

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摘要

  • 1 实验材料与方法
  • 2 实验结果与分析
  • 3 结论
  • 参考文献