Optimization of process parameters for preparation of powdered activated coke to achieve maximum SO

大纲

摘要
关键词

能源前沿（英文）

2021年第15卷第1期页码 159-169

Optimization of process parameters for preparation of powdered activated coke to achieve maximum SO

展示更多

10.1007/s11708-020-0719-7

引用这篇文章

摘要

Powdered activated coke (PAC) is a good adsorbent of SO , but its adsorption capacity is affected by many factors in the preparation process. To prepare the PAC with a high SO adsorption capacity using JJ-coal under flue gas atmosphere, six parameters (oxygen-coal equivalent ratio, reaction temperature, reaction time, O concentration, CO concentration, and H O concentration) were screened and optimized using the response surface methodology (RSM). The results of factor screening experiment show that reaction temperature, O concentration, and H O (g) concentration are the significant factors. Then, a quadratic polynomial regression model between the significant factors and SO adsorption capacity was established using the central composite design (CCD). The model optimization results indicate that when reaction temperature is 904.74°C, O concentration is 4.67%, H O concentration is 27.98%, the PAC (PAC-OP) prepared had a higher SO adsorption capacity of 68.15 mg/g while its SO adsorption capacity from a validation experiment is 68.82 mg/g, and the error with the optimal value is 0.98%. Compared to two typical commercial activated cokes (ACs), PAC-OP has relatively more developed pore structures, and its and are 349 m /g and 0.1475 cm /g, significantly higher than the 186 m /g and 0.1041 cm /g of AC1, and the 132 m /g and 0.0768 cm /g of AC2. Besides, it also has abundant oxygen-containing functional groups, its surface O content being 12.09%, higher than the 10.42% of AC1 and 10.49% of AC2. Inevitably, the SO adsorption capacity of PAC-OP is also significantly higher than that of both AC1 and AC2, which is 68.82 mg/g versus 32.53 mg/g and 24.79 mg/g, respectively.

关键词

powdered activated coke (PAC) ; SO₂ adsorption capacity ; parameters optimization ; response surface methodology

上一篇本期文章

本期文章下一篇

阅读量

下载量

大纲

Figures(5)

标签(1)

其他(2)

能源前沿（英文）

Optimization of process parameters for preparation of powdered activated coke to achieve maximum SO

摘要

关键词

评论

大纲

Figures(5)

标签(1)

其他(2)

能源前沿（英文）

Optimization of process parameters for preparation of powdered activated coke to achieve maximum SO

摘要

关键词

评论

相关研究