【摘要】：為了研究煤自燃過程中主要特征氣體及磁性隨溫度的變化規(guī)律,利用煤自然發(fā)火實驗裝置對神府礦區(qū)的不粘煤進(jìn)行自燃模擬實驗,測試了不同溫度下特征氣體的產(chǎn)生量,并用改進(jìn)的古埃型磁測儀測試了常溫和加熱處理后煤樣的比磁化率。實驗結(jié)果表明,常溫下粒徑、磁場強度對煤磁性均產(chǎn)生影響,煤自燃過程中磁性劇烈變化之前,CO和CO_2氣體產(chǎn)生量隨著溫度的增大逐漸增大;磁性劇烈變化階段,當(dāng)煤比磁化率隨著溫度的升高急劇增大時,CO和CO_2氣體產(chǎn)生量趨于穩(wěn)定直至下降;270℃為該煤磁性突變的臨界點,臨界點附近C_2H_4和C_2H_6產(chǎn)生量迅速增大,并且在300℃至350℃增大速率最快。
[Abstract]:In order to study the variation of main characteristic gases and magnetic properties with temperature in the process of coal spontaneous combustion, the spontaneous combustion simulation experiment of non-caking coal in Shenfu mining area was carried out by using the coal spontaneous combustion experimental device, and the production of characteristic gases at different temperatures was tested. The specific magnetic susceptibility of coal samples after normal temperature and heating treatment was measured by an improved Gouye type magnetic meter. The experimental results show that the particle size and magnetic field intensity have an effect on the coal magnetism at room temperature, and the CO and CO_2 gas production increases with the increase of temperature before the dramatic magnetic changes in the process of coal spontaneous combustion. When the specific magnetic susceptibility of coal increases sharply with the increase of temperature, the production of CO and CO_2 gas tends to stabilize until the decrease of 270 鈩，

本文編號：2192626