化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2015年
3期
1104-1110
,共7页
柏静儒%林卫生%潘朔%王擎
柏靜儒%林衛生%潘朔%王擎
백정유%림위생%반삭%왕경
油页岩%热解%轻质气体%析出特性
油頁巖%熱解%輕質氣體%析齣特性
유혈암%열해%경질기체%석출특성
oil shale%pyrolysis%light gas%evolution characteristic
为研究油页岩低温热解过程中轻质气体的析出特性,在热重-红外-质谱三联机上对国内有代表性的4个地区(FS、HD、MM和NM)油页岩以20℃·min?1的升温速率进行了热解实验研究,考察了H2、H2O、CO、CO2、CH4和CnHm 6种轻质气体的析出速率和累积产量随温度变化的规律。实验结果表明:油页岩轻质气体析出的温度范围在180~540℃;H2、CH4和CnHm的析出速率曲线大致相似,呈高斯分布,CO和CO2的析出速率则是先缓慢增加随后快速增加,达到最大值后又快速下降,直到析出结束,H2O的析出速率相对比较复杂,油页岩的内水、矿物质的结晶水和热解水在3个阶段析出,析出速率都是先增大,达到最大值而后减小。
為研究油頁巖低溫熱解過程中輕質氣體的析齣特性,在熱重-紅外-質譜三聯機上對國內有代錶性的4箇地區(FS、HD、MM和NM)油頁巖以20℃·min?1的升溫速率進行瞭熱解實驗研究,攷察瞭H2、H2O、CO、CO2、CH4和CnHm 6種輕質氣體的析齣速率和纍積產量隨溫度變化的規律。實驗結果錶明:油頁巖輕質氣體析齣的溫度範圍在180~540℃;H2、CH4和CnHm的析齣速率麯線大緻相似,呈高斯分佈,CO和CO2的析齣速率則是先緩慢增加隨後快速增加,達到最大值後又快速下降,直到析齣結束,H2O的析齣速率相對比較複雜,油頁巖的內水、礦物質的結晶水和熱解水在3箇階段析齣,析齣速率都是先增大,達到最大值而後減小。
위연구유혈암저온열해과정중경질기체적석출특성,재열중-홍외-질보삼련궤상대국내유대표성적4개지구(FS、HD、MM화NM)유혈암이20℃·min?1적승온속솔진행료열해실험연구,고찰료H2、H2O、CO、CO2、CH4화CnHm 6충경질기체적석출속솔화루적산량수온도변화적규률。실험결과표명:유혈암경질기체석출적온도범위재180~540℃;H2、CH4화CnHm적석출속솔곡선대치상사,정고사분포,CO화CO2적석출속솔칙시선완만증가수후쾌속증가,체도최대치후우쾌속하강,직도석출결속,H2O적석출속솔상대비교복잡,유혈암적내수、광물질적결정수화열해수재3개계단석출,석출속솔도시선증대,체도최대치이후감소。
Pyrolysis experiments were conducted on a unit of thermogravimetric-infrared-mass spectrometry at heating rate of 20℃·min?1 to examine the evolution characteristics of light gases from low temperature pyrolysis of oil shale obtained from four locations (FS, HD, MM and NM). The time-resolved light gases including H2, H2O, CO, CO2, CH4 and CnHm were investigated for their release rates and accumulated productions varying with the change of temperature. Light gases evolved at temperatures in the range of 180—540℃. Release rate curves for H2, CH4 and CnHm mainly resembled each other, appearing in Gaussian distribution. Release rate curves for CO and CO2 smoothly increased first and then accelerated sharply. After reaching a maximum the curves dropped quickly till the end of evolution. Change of H2O release rate was complicated. Release rates of internal water, mineral water and pyrolysis water of oil shale in three stages all increased to a maximum and then leveled off.