Aiming at the problems that the existing coal spontaneous combustion physical inhibitor has the disadvantages of short retarding time and low blocking efficiency, the novel super‐absorbent polymer‐grafted tea polyphenol composite inhibitor is prepared based on analyzing the advantages and disadvantages of various kinds of inhibitors. The orthogonal test was carried out with the water‐absorbent as the assessment index, and the optimum formulation of the composite inhibitor was obtained: the degree of neutralization was 90%, the amount of initiator was KPS (Potassium peroxydisulfate)/AA (Acroleic acid) = 1.2%, and the amount of cross‐linking agent was MBA (N,N' Methylene diene amide)/AA = 0.4%. The experimental results show that the temperature of the cross‐point of the coal sample treated by obtained composite inhibitor increased by 18°C compared with the raw coal, and the crossing point temperature delayed by 37 minutes, the activation energy increased by 38.552 kJ/mol. The further mechanism analysis shows that the inhibitor has good water‐retaining and water‐absorbing property. The function of cooling by absorbing heat, covering coal and insulating oxygen, and also inhibiting the oxidation activity of the coal molecule can effectively inhibit the spontaneous combustion of the coal.

中文翻译：

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新型超吸收性聚合物接枝茶多酚复合抑制剂，可防止煤自燃

针对现有煤自燃物理抑制剂具有阻滞时间短，封堵效率低的缺点，在分析各种抑制剂的优缺点的基础上，制备了新型的高吸收性聚合物接枝茶多酚复合抑制剂。 。以吸水剂为评价指标，进行正交试验，得出复合抑制剂的最佳配方：中和度为90％，引发剂用量为KPS（过硫酸二钾）/ AA（丙烯醛）。 ）= 1.2％，交联剂的量为MBA（N，N'亚甲基二烯酰胺）/ AA = 0.4％。实验结果表明，与原煤相比，复合抑制剂处理后煤样品的交点温度提高了18℃，交点温度延迟了37分钟，活化能提高了38.552 kJ /。摩尔 进一步的机理分析表明，该抑制剂具有良好的保水和吸水性能。通过吸收热量，覆盖煤和绝缘氧气来冷却的功能，并且还抑制煤分子的氧化活性，可以有效地抑制煤的自燃。