CAJ | 학술논문

为提高褐煤脱水率，以锡林郭勒褐煤为研究对象，采用高温反应釜进行了褐煤热压脱水实验，考察了温度、压力和保压时间对褐煤脱水率的影响，并利用静态氮吸附仪对热压脱水前后煤样的孔隙结构进行测定。结果表明：温度250℃、压力3 MPa、保压60 min 时褐煤脱水率最大可达到93.67％。在热力协同作用下，加压可使褐煤实现“攥拳式”脱水，压缩褐煤碳骨架的同时，挤出内水，改变褐煤孔隙结构及分布。热压脱水后，褐煤比表面积、总孔体积、平均孔径分别降低了0.70192 m2/ g、0.00405 cm3/ g 和1.38593 nm，煤样孔径分布明显改变，微孔比例增加5.57％，中孔比例增加4.97％，大孔比例减小10.54％。实验证明以气体加压方式进行褐煤热压脱水可行。
위제고갈매탈수솔，이석림곽륵갈매위연구대상，채용고온반응부진행료갈매열압탈수실험，고찰료온도、압력화보압시간대갈매탈수솔적영향，병이용정태담흡부의대열압탈수전후매양적공극결구진행측정。결과표명：온도250℃、압력3 MPa、보압60 min 시갈매탈수솔최대가체도93.67％。재열력협동작용하，가압가사갈매실현“촬권식”탈수，압축갈매탄골가적동시，제출내수，개변갈매공극결구급분포。열압탈수후，갈매비표면적、총공체적、평균공경분별강저료0.70192 m2/ g、0.00405 cm3/ g 화1.38593 nm，매양공경분포명현개변，미공비례증가5.57％，중공비례증가4.97％，대공비례감소10.54％。실험증명이기체가압방식진행갈매열압탈수가행。
In order to improve the dehydration rate of lignite,taking Xilingol lignite as research object,lignite hot-pressing dehydration ex-periments were carried out under different conditions using high temperature reactor.The paper studied the effects of temperature,pressure and pressure preservation time on the lignite dehydration rate.Nitrogen adsorption static tester was used to analyze pore structure of coal samples before and after the test.The results indicated that when the temperature was 250 ℃ ,the pressure was 3 MPa and pressure preser-vation time was 60 minutes,the dehydration rate could reach to 93.67%.With the interaction of pressure and thermal,the increasing pres-sure compressed the carbon skeleton of lignite,squeezed the inherent moisture,changed the pore structure and distribution.After dehydra-tion,the specific surface area of lignite,total pore volume and average aperture decreased by 0.70192 m2 / g,0.00405 cm3 / g,1.38593 nm, the distribution of aperture was changed significantly,the addition of micropore and mesoporous were 5.57% and 4.97%,the decrement of macropore was 10.54%.The test showed that the hot-pressing was suitable for lignite dehydration.