Mass yields of products and composition of syngas from pyrolysis of Brazilian plastic solid wastes: Combustion simulation and burner design to minimize CO x and C x H y emissions

被引：0

作者：

Filho, Jose S. Pessoa ^{[1
]}

Penha, Bernardo A. S. ^{[1
]}

Satto, Sarah V. ^{[1
]}

Lima, Euclides A. P. ^{[1
]}

Borges, Valerio L. ^{[1
]}

Silva, Valdislaine M. ^{[2
]}

Santos, Marcelo B. ^{[1
]}

Trovo, Alam G. ^{[2
]}

Carvalho, Solidonio R. ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Sch Mech Engn, Ave Joao Naves de Avila 2121, BR-38408100 Uberlandia, MG, Brazil

[2] Univ Fed Uberlandia, Chem Inst, Ave Joao Naves de Avila 2121, BR-38400902 Uberlandia, MG, Brazil

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2024年 / 186卷

关键词：

ANSYS; characterization; thermal degradation; greenhouse gas; plastics; waste to energy; THERMAL-PROPERTIES; ENERGY RECOVERY; MIXED PE; GASES; FUELS; PVC; PS; PP;

D O I：

10.1016/j.psep.2024.04.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

For the first time, the mass yields of products and the composition of synthesis gas (syngas) from pyrolysis of Brazilian plastic solid waste were evaluated for a reactor processing 20 g of plastic at 800 degrees C. Combustion of the syngas was simulated, evaluating the levels of CO x and C x H y emissions, and a burner was designed to minimize emissions during combustion. The main findings highlighted the importance of performing thermogravimetric analyses of waste materials. Higher thermal degradation temperatures (530 - 900 degrees C) were obtained for all the plastics, compared to values reported in the literature (300 - 600 degrees C). Between 46.7 and 98.0 wt% of syngas was produced, with lower heating values ranging from 10390 to 45684 kJ kg - 1 , due to differences between the plastics in the fractions of inorganic and hydrocarbon gases produced. The maximum temperatures for syngas combustion, simulated using ANSYS software, were 2000 and 800 degrees C inside the burner and combustion chamber, respectively. In the burner, higher CO x and C x H y levels were related to the syngas composition and incomplete chemical reactions in the flame zone. The CO and C x H y levels decreased towards the combustion chamber, where CO 2 was less than 8 wt%, in compliance with the CONAMA 316/2002 regulation.

引用

页码：264 / 273

页数：10