The Research On Low Temperature Co-carbonization Of Coal And Effective Carbon Sequestration Algae

The reducing emissions of CO₂ had been widely concerned, and the comprehensive utilization by fixing CO₂ combined with energy consumption of algae was one of the economical and green carbon reduction processes recently. Low-temperature carbonization tar with high value was produced by the low-temperature carbonization of low rank coal, isolated by distillation and extraction to obtain high-value chemicals, and produced fuel oils such as gasoline and diesel by the catalytic hydrogenation. Upgrading was one of the most efficient methods to improve the isolated effect of the carbonization tar, and carbonization tar was converted to light oils or high-value chemicals such as naphthalene, phenol, anthracene, which would improve the values of the low-temperature carbonization tar.The co-carbonization between algae and coal was conducted in a dry distillation equipment. The carbonization tar was investigated to study the reaction machanism of the co-carbonization between algae and coal and the lighter feedstock machanism of carbonization tar by ultimate analysis, GC-MS, FTIR, etc.The results showed that low-temperature carbonization tar could be upgraded. The lighter oil content in the co-carbonization carbonization tar with the optimal proportion 20:10 was 0.8 times higher than that in normal carbonization tar. The naphthalene compound content was 1.07 times higher than that in normal carbonization tar, and phenol compound content was 8.43 times higher than that in normal carbonization tar. The algae sample played a role in hydrogen donating and the reactions involved opening-ring reaction, alkylaromatic side chain reaction and condensation reaction, etc.