Thermogravimetric characteristics of textile dyeing sludge, coal and their blend in N2/O2 and CO2/O2 atmospheres

Zhuo, Zhongxu; Liu, Jingyong; Sun, Shuiyu; Sun, Jian; Kuo, Jia‐Hong; Chang, Ken-Lin; Fu, Jiewen; Wang, Yujie

doi:10.1016/j.applthermaleng.2016.09.089

Cited by 57 publications

(19 citation statements)

References 31 publications

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“…Co-combustion of Coal and TDS. Figure 4 represents the TG-DTG curves of coal, TDS, and their blends in different ratios at a heating rate of 20 8C/min under N 2 /O 2 ¼ 80/20 at a flow rate of 100 mL/min (parts of the data (coal and 20TDS:80coal have been published (Zhuo et al, 2017)). The TG-DTG of coal had a weight loss peak at the temperature range of 500-700 8C, and the maximum weight loss rate occurred at 616 8C, after which the residues reached a constant weight of approximately 16% according to the ash content listed in Table 1.…”

Section: Resultsmentioning

confidence: 99%

“…where k is the reaction rate constant (in s À1 ) for a first order reaction (or in appropriate units as a function of the conversion model used), E a is the activation energy (J/mol), and A is the pre-exponential factor (in units of k). a T v , the onset temperature for volatile release b T f , the temperature of 98% conversion c T 3 , the temperature according to the second peak, and the third peak d DTG 3 , the weight loss rate according to T 3 Figure 4-TG-DTG curves of TDS, coal, and their blends under an 80N 2 /20O 2 atmosphere at 20 8C/min (Zhuo et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…The lowest RSS values are obtained for the best parameter estimates. Figure 7a,b (Zhuo et al, 2017) gives an example for explaining the method to determine the best model for coal at the active combustion stage, which covers nearly 95% of the weight loss process. Twelve models available in Figure 7a were used to calculate the RSS, where the smallest value corresponds to the best fitting model, as shown in Figure 7b.…”

Section: Resultsmentioning

confidence: 99%

“…Samples of TDS were collected from the Dongguan Chao Ying Textile Co., Ltd. (Guangdong Province, China), and coal was collected from Yulin, Shanxi Province. The ultimate analysis and proximate analysis of TDS and coal are presented in Table 1 (Zhuo et al, 2017). TDS and coal were dried in natural air for one week and milled through a 200 mesh sieve before use, whereupon all the mixtures were mixed for an hour in a rotary mixer.…”

Section: Methodsmentioning

confidence: 99%

“…Comparison of the models and experimental conversion curves of coal: (a) comparison of the model and experimental conversion curve of coal; (b)the best model for the combustion process of coal(Zhuo et al, 2017).…”

mentioning

confidence: 99%

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Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Zhuo

Liu

Sun

et al. 2018

Water Environment Research

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The combustion characteristics of textile dyeing sludge (TDS) in N2/O2, CO2/O2, and N2/CO2 atmospheres, and blends of TDS with coal were analyzed using TGA (thermogravimetric analysis). Results showed that the replacement of N2 by CO2 resulted in negative effects on the combustion and pyrolysis of TDS. Comparing N2/O2 and CO2/O2 atmospheres, combustion of TDS was easier in a N2/O2 atmosphere, but the residual mass after TDS pyrolysis in pure CO2 was less than that in N2 by approximately 4.51%. When the proportion of TDS was 30-50% in the blends of coal with TDS, a synergistic interaction clearly occurred, and it significantly promoted combustion. In considering different combustion parameters, the optimal proportion of TDS may be between 20-30%. The activation energy Ea value decreased from 155.6 kJ/mol to 53.35 kJ/mol with an increasing TDS proportion from 0% to 50%, and it rapidly decreased when the TDS proportion was below 20%.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

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Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Zhuo

Liu

Sun

et al. 2018

Water Environment Research

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Kinetic and thermodynamic modelling of thermal decomposition of bitumen under high pressure enhanced with simulated annealing and artificial intelligence

et al. 2021

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Thermogravimetric analysis (TGA) of energy resources including bitumen provides kinetic parameters, which can be applied in design and simulation of processes for thermal recovery and conversion. In this investigation, pressurized non‐isothermal decomposition of bitumen under inert environment has been studied. The kinetic parameters were calculated at different pressures (0.1, 0.5, and 1 MPa) and heating rates (10, 20, and 30°C/min) using the differential method. The parameters were later optimized using simulated annealing (SA) optimization algorithm. The results were subsequently validated by comparing the predicted conversion (α) with those of artificial neural network (ANN). Thermodynamic parameters (enthalpy, entropy, and Gibb's free energy) were also calculated using the optimized kinetic parameters. The TGA results show that weight loss and thermal conversion decreased as the total pressure increased from 0.1–1 MPa, at all heating rates. Conversely, the thermal conversion rate (dα/dT) was observed to first decrease with increasing pressure (0.1–1 MPa) within the low temperature oxidation (LTO) and fuel deposition (FD) regions. In contrast, it increased with increasing total pressure within the high temperature oxidation (HTO) region. Furthermore, it was observed that the activation energy (Ea) increased with increasing pressures at all heating rates, while the frequency factor (A) was independent of the pressure or the heating rates. In addition, the thermodynamic parameters tend to increase with increasing pressure. Ultimately, the results established that the SA algorithm could be used to enhance the performance of the differential modelling method in calculating kinetic parameters and predicting the conversion.

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Thermodynamic equilibrium predictions of zinc volatilization, migration, and transformation during sludge co‐incineration

Liu

Cai

et al. 2019

Water Environment Research

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The effects of interactions between and among chlorine (Cl), sulfur (S), phosphorus (P), and minerals on migration, transformation, and volatilization of zinc (Zn) were numerically simulated in sludge co-incineration using the chemical thermodynamic equilibrium method. Our results showed that all the minerals of Fe 2 O 3 , Al 2 O 3 , Fe 2 O 3 , and TiO 2 except for CaO in the sludge co-incineration system reacted with Zn which inhibited the Zn volatilization. The presence of S and P was beneficial to the formation of ZnSO 4 (s) and Zn 3 (PO 4 ) 2 (s). Cl weakened the chemical reactions between the minerals and Zn, thus increasing the Zn volatilization. Changes in Zn transformation and migration induced by the coupling of Cl + S were mainly controlled by Cl, S, and the minerals, while those induced by Cl + P and S + P were mainly controlled by P and S + P. The presence of P + Cl, S + Cl, S + P, S + Cl + P, Cl, and Al 2 O 3 in the coexisting mineral system controlled the reactions between the minerals and Zn.

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Thermogravimetric characteristics of textile dyeing sludge, coal and their blend in N2/O2 and CO2/O2 atmospheres

Cited by 57 publications

References 31 publications

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Kinetic and thermodynamic modelling of thermal decomposition of bitumen under high pressure enhanced with simulated annealing and artificial intelligence

Thermodynamic equilibrium predictions of zinc volatilization, migration, and transformation during sludge co‐incineration

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Thermogravimetric characteristics of textile dyeing sludge, coal and their blend in N2/O2 and CO2/O2 atmospheres

Cited by 57 publications

References 31 publications

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N2/CO2/O2 Atmospheres and its Combustion Model with Coal

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N2/CO2/O2 Atmospheres and its Combustion Model with Coal

Kinetic and thermodynamic modelling of thermal decomposition of bitumen under high pressure enhanced with simulated annealing and artificial intelligence

Thermodynamic equilibrium predictions of zinc volatilization, migration, and transformation during sludge co‐incineration

Contact Info

Product

Resources

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Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal