A new technology for treating waste plastics （WP） by traditional coking process was introduced. With a thermo-balance and a 10 g atmospheric fixed bed reactor, the thermo-gravimetric behavior and product were studie...A new technology for treating waste plastics （WP） by traditional coking process was introduced. With a thermo-balance and a 10 g atmospheric fixed bed reactor, the thermo-gravimetric behavior and product were studied during co-coking of WP with blended coal. And then, using a coke-oven with capacity of 200 kg, the characteristics of products were assessed. The results showed that there is an overlapping temperature range （200-550℃ ） of decomposition between WP and blended coal, and the pyrolysis synergism index η and synergism strength β proposed could evaluate the synergism between them. 1% of added WP results in the maximum synergism in all series experiments. The increase of added WP decreases the synergism. Tar yield in co-coking is increased with the decrease of water yield for synergism. Moreover, it was also found that the quality indexes of coke, such as M10, M40, CRI and CSR, are degraded with the increase of WP until 4%, though the quality of tar and gas is optimized for WP addition.展开更多
The combustiondynamic experiments of blend-melt samples of blending pulverized coal and waste plastic are carried out in different proportions at different combustion temperatures.The experiment shows that all of corr...The combustiondynamic experiments of blend-melt samples of blending pulverized coal and waste plastic are carried out in different proportions at different combustion temperatures.The experiment shows that all of correlation coefficients for fitting straight lines of curve F(a)-1/T of the blend-melt samples are above 0.95,which indicates that the combustion of samples conforms to the rules of first order reaction.The experiment also shows that the activation energy is the lowest and the combustion becomes easier with the mix proportion of 20%-25% at 200 ℃.展开更多
基金ItemSponsored by National Natural Science Foundation of China (50334020) Foundation of Science and TechnologyCommittee of Beijing of China ( H020620330310)
文摘A new technology for treating waste plastics （WP） by traditional coking process was introduced. With a thermo-balance and a 10 g atmospheric fixed bed reactor, the thermo-gravimetric behavior and product were studied during co-coking of WP with blended coal. And then, using a coke-oven with capacity of 200 kg, the characteristics of products were assessed. The results showed that there is an overlapping temperature range （200-550℃ ） of decomposition between WP and blended coal, and the pyrolysis synergism index η and synergism strength β proposed could evaluate the synergism between them. 1% of added WP results in the maximum synergism in all series experiments. The increase of added WP decreases the synergism. Tar yield in co-coking is increased with the decrease of water yield for synergism. Moreover, it was also found that the quality indexes of coke, such as M10, M40, CRI and CSR, are degraded with the increase of WP until 4%, though the quality of tar and gas is optimized for WP addition.
文摘The combustiondynamic experiments of blend-melt samples of blending pulverized coal and waste plastic are carried out in different proportions at different combustion temperatures.The experiment shows that all of correlation coefficients for fitting straight lines of curve F(a)-1/T of the blend-melt samples are above 0.95,which indicates that the combustion of samples conforms to the rules of first order reaction.The experiment also shows that the activation energy is the lowest and the combustion becomes easier with the mix proportion of 20%-25% at 200 ℃.
