绝氧条件下沉积有机物的热解分析  

Thermo-Analysis of Sedimentary Orgaric Matter under Non-Oxygen Condition

作　　者：尹小波 连莉文 钱贻伯 朱辉 戚厚发[1] 关德师 

机构地区：[1]农业部部级厌氧微生物重点开放实研室,石油天然气总公司石油勘测研究院

出　　处：《沉积学报》1996年第A00期143-148,共6页Acta Sedimentologica Sinica

摘　　要：本文对选自柴达木、南海莺琼盆地１９个生物气源岩样品，进行了三个不同温度段的绝氧热解分析，初步证实了居首位可利用的有机物为纤维素、半纤维素等多糖类物质，类脂化合物热解温度为２６９—２７０℃，核酸类蛋白质类等的热分解温度大多数也在３２０℃以内。因而用３３０℃热分解１小时获取的热解失重值可用于评价气源岩的生化甲烷丰度。本文对生物成因天然气资源的预测有实际意义。Non-oxygen thermo-analysis at three different temperatures was Performed for the 19 biogas source rock samples from Ying-Qiong Basin in South China Sea and Qaidam Basin in Qinghai Province. The results showed that the thermo-decomposing temperature was 260-270℃ for polysaccharides (such as cellululose, semi-cellose) and lipid compounds. Also, the thermo-decomposing temperature was lower than 320℃ for most of nucleic acids and proteins.Therefore, the thermo-decomposing value at 330℃ for 1 hr. could be used to estimate the production abundance of biochemical methane.

关 键 词：有机质丰度 绝氧 沉积有机物 热解 天然气 成因 

分 类 号：P618.130.1[天文地球—矿床学]