CAJ | 학술논문

为防止煤堆自燃，以印尼煤为原料制备了煤堆阻燃覆盖剂，测定了阻燃覆盖剂孔隙率、渗透率、抗压强度和屈服强度等指标，分析了阻燃覆盖剂的阻燃机理。采用参比方法在珠海某电厂露天煤场进行煤堆阻燃覆盖剂的阻燃效果评估，研究阻燃覆盖剂覆盖层对现场条件的耐受性。结果表明：煤堆整体温度自上而下升高，阻燃覆盖剂覆盖煤堆和未覆盖煤堆的实时温度最大差值超过30℃，但覆盖煤堆自上而下的温度变化率远低于未覆盖煤堆的温度变化率；均方差变化趋势不同，均方差变化的异常是煤堆内部存在低温氧化自热效应的标志；覆盖煤堆和未覆盖煤堆的温度历史值分别为39~49℃和53~75℃。煤堆在覆盖阻燃覆盖剂150 d后，未覆盖层发生自燃，覆盖层保持完好。说明研发的阻燃覆盖剂能有效抑制煤堆低温氧化自加热进程，与实际煤堆阻燃效果一致；此外阻燃覆盖剂还有防雨损和风损作用。
위방지매퇴자연，이인니매위원료제비료매퇴조연복개제，측정료조연복개제공극솔、삼투솔、항압강도화굴복강도등지표，분석료조연복개제적조연궤리。채용삼비방법재주해모전엄로천매장진행매퇴조연복개제적조연효과평고，연구조연복개제복개층대현장조건적내수성。결과표명：매퇴정체온도자상이하승고，조연복개제복개매퇴화미복개매퇴적실시온도최대차치초과30℃，단복개매퇴자상이하적온도변화솔원저우미복개매퇴적온도변화솔；균방차변화추세불동，균방차변화적이상시매퇴내부존재저온양화자열효응적표지；복개매퇴화미복개매퇴적온도역사치분별위39~49℃화53~75℃。매퇴재복개조연복개제150 d후，미복개층발생자연，복개층보지완호。설명연발적조연복개제능유효억제매퇴저온양화자가열진정，여실제매퇴조연효과일치；차외조연복개제환유방우손화풍손작용。
In order to prevent coal pile spontaneous combustion,a flame retardant covering agent( FRCA)was prepared with Indonesia coal as raw material. The porosity,permeability,compressive strength and bending strength of FRCA were analyzed. The flame retardant mechanism was researched. The evaluation experiments were conducted at an open coal yard of Zhuhai coal-fired power plant. The refer-ence method was used to analyze the evaluation. The results showed that the temperature of coal pile increased from top to bottom,the max-imum difference of real-time temperature of covered and uncovered coal pile was over 30 ℃,the change rate of covered coal pile was far below the rate of uncovered coal pile. The unusual mean square error change indicated that there was low temperature spontaneous combus-tion. The temperature history value range of covered and uncovered coal pile was 39 ℃ to 49 ℃,53 ℃ to 75 ℃ respectively. After 150 days,the coal pile which wasn’t covered FRCA began to burn,while the coal pile covered agent was still in good state. In addition,the FR-CA can also played a role of preventing rain and wind damage losses.