CAJ | 학술논문

基于高含水率碳基原料直接干燥-热解一体化( IPDDP)工艺,以海拉尔褐煤为原料,利用热天平考察其在氮气气氛中的热解特性以及在空气气氛中的燃烧特性；分析了升温速率对褐煤热解性能的影响；探讨了该工艺的可行性。结果表明：在氮气气氛下,褐煤在低于110℃进行脱水,质量损失约11%；110~690℃脱除挥发分并进行热解,总质量损失约23%；690~900℃褐煤半焦缩聚成炭,质量损失为10%。空气气氛下,在315~320℃,褐煤发生燃烧反应,反应后剩余13.7%灰分。高升温速率会延迟褐煤中水的脱除,促进水蒸气、挥发分和褐煤半焦的共热解,实现干燥得到的水蒸气本身作为褐煤热解的气化剂。
기우고함수솔탄기원료직접간조-열해일체화( IPDDP)공예,이해랍이갈매위원료,이용열천평고찰기재담기기분중적열해특성이급재공기기분중적연소특성；분석료승온속솔대갈매열해성능적영향；탐토료해공예적가행성。결과표명：재담기기분하,갈매재저우110℃진행탈수,질량손실약11%；110~690℃탈제휘발분병진행열해,총질량손실약23%；690~900℃갈매반초축취성탄,질량손실위10%。공기기분하,재315~320℃,갈매발생연소반응,반응후잉여13.7%회분。고승온속솔회연지갈매중수적탈제,촉진수증기、휘발분화갈매반초적공열해,실현간조득도적수증기본신작위갈매열해적기화제。
Based on the self-proposed integrated process for direct drying and pyrolysis ( IPDDP) of carbon-based materials with high water content, the pyrolysis reaction in a nitrogen atmosphere and combustion performance in an air atmosphere of Hailar lignite was measured using thermobalance. The effects of the heating rate on pyrolysis characteristics of lignite were investigated. Also, the feasibility of this IPDDP was discussed. The results showed that lignite was dehydrated below 110 ℃ in a nitrogen atmosphere with a weight loss about 11%. In the temperature range between 110 ℃ and 690 ℃, the volatiles were removed and the pyrolysis took place, with a weight loss about 23%. Thereafter, the char from pyrolysis was transfered into carbon, with a weight loss about 10%, during the temperature up to 900 ℃. While in an air atmosphere, lignite as well as the volatiles burned between the narrow temperature range of 315 ℃ to 320 ℃. It provided a residual of about 13. 7% ash. Water desorption will be postponed at higher heating rate. This enabled the co-pyrolysis of water vapor, volatiles and the char from pyrolysis. It proves the feasibility of the IPDDP, to some extent.