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在自行设计的微波干馏装置上研究了汪清和桦甸几个矿区的油页岩和半焦在微波场中升温特性。实验研究了产地、组成成分对油页岩升温特性的影响,不同干馏终温生成的半焦及石墨在微波场中的升温特性,以及半焦和油页岩混合物在微波场中的升温特性。实验结果表明:油页岩是一种微波弱吸收物质,要想热解必须加入微波吸收剂。水分对油页岩在微波场中的升温特性影响很大。油页岩干燥以后,升温速率明显减小,终温也降低。油页岩中的黄铁矿对升温也有一定的影响。半焦由于在微波场中升温很快可以作为油页岩热解的微波吸收剂。半焦的升温速率与干馏终温有关,随着干馏终温提高,半焦在微波场中的升温速率变大。半焦和页岩的混合物在微波场中升温很快,具有良好的热解效果。
The temperature rising characteristics of oil shale and semi-coke in several fields of Wangqing and Huadian were studied in a microwave dry distillation unit designed by ourselves. The effects of origin and composition on the heating properties of oil shale were investigated experimentally. The temperature rising characteristics of semi-coke and graphite generated in different final distillation temperatures in microwave field and the temperature rising characteristics of the mixture of semi-coke and oil shale in the microwave field were studied. The experimental results show that oil shale is a kind of microwave weak absorbing material, and microwave absorbing agent must be added to pyrolysis. Moisture has a great influence on the heating characteristics of oil shale in the microwave field. After oil shale drying, the heating rate was significantly reduced, the final temperature also decreased. Pyrite in oil shale also has a certain influence on the temperature rise. Semi-coke due to warming in the microwave field can be used as a microwave absorbent oil shale pyrolysis. The heating rate of the semi-coke is related to the final temperature of the dry distillation. As the final temperature of the dry distillation increases, the heating rate of the semi-coke in the microwave field becomes larger. The mixture of char and shale heats up rapidly in the microwave field with good pyrolysis performance.