Characterization of catalytic combustion of DME in the fixed bed reactor

Chih Yung Wu, Wan Ching Yu, Ching Ching Cheng, Yung Sheng Lien

Research output: Contribution to conferencePaper

Abstract

This paper presents an experimental study on the catalytic combustion of dimethyl ether under different oxidation conditions via a catalytic reactor filled with lab-made catalyst. The catalytic reactor is mounted in a tubular furnace for the purpose of heating and maintaining an isothermal boundary. The reaction profiles and light-off process are characterized by measuring the temperature time profiles, the axial temperature distribution in the reactor, and the average reaction temperature for various fuel quantities with different isothermal boundaries of reactor. The results show that the self-ignition of dimethyl ether without preheating cannot be initiated at room temperature. To ignite the catalytic reaction, the reactor needs to be preheated to 400K or higher. During the light-off process, the main exothermal reaction zone shift is found. The results also demonstrate that a higher equivalence ratio of reactants produces a higher temperature, resulting in more heat transferring upstream, which causes a higher conversion ratio. For the same equivalence ratio, a higher isothermal boundary temperature will result in a higher conversion ratio. A longer residence time is required for cases with a lower equivalence ratio of reactants or a lower isothermal boundary of reactor.

Original languageEnglish
Publication statusPublished - 2019 Jan 1
Event12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, Japan
Duration: 2019 Jul 12019 Jul 5

Conference

Conference12th Asia-Pacific Conference on Combustion, ASPACC 2019
CountryJapan
CityFukuoka
Period19-07-0119-07-05

Fingerprint

beds
reactors
equivalence
Ethers
Temperature
ethers
Preheating
spontaneous combustion
heating
Ignition
profiles
Furnaces
Temperature distribution
upstream
furnaces
temperature
temperature distribution
Heating
Oxidation
Catalysts

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Condensed Matter Physics

Cite this

Wu, C. Y., Yu, W. C., Cheng, C. C., & Lien, Y. S. (2019). Characterization of catalytic combustion of DME in the fixed bed reactor. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.
Wu, Chih Yung ; Yu, Wan Ching ; Cheng, Ching Ching ; Lien, Yung Sheng. / Characterization of catalytic combustion of DME in the fixed bed reactor. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.
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Wu, CY, Yu, WC, Cheng, CC & Lien, YS 2019, 'Characterization of catalytic combustion of DME in the fixed bed reactor', Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan, 19-07-01 - 19-07-05.

Characterization of catalytic combustion of DME in the fixed bed reactor. / Wu, Chih Yung; Yu, Wan Ching; Cheng, Ching Ching; Lien, Yung Sheng.

2019. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.

Research output: Contribution to conferencePaper

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T1 - Characterization of catalytic combustion of DME in the fixed bed reactor

AU - Wu, Chih Yung

AU - Yu, Wan Ching

AU - Cheng, Ching Ching

AU - Lien, Yung Sheng

PY - 2019/1/1

Y1 - 2019/1/1

N2 - This paper presents an experimental study on the catalytic combustion of dimethyl ether under different oxidation conditions via a catalytic reactor filled with lab-made catalyst. The catalytic reactor is mounted in a tubular furnace for the purpose of heating and maintaining an isothermal boundary. The reaction profiles and light-off process are characterized by measuring the temperature time profiles, the axial temperature distribution in the reactor, and the average reaction temperature for various fuel quantities with different isothermal boundaries of reactor. The results show that the self-ignition of dimethyl ether without preheating cannot be initiated at room temperature. To ignite the catalytic reaction, the reactor needs to be preheated to 400K or higher. During the light-off process, the main exothermal reaction zone shift is found. The results also demonstrate that a higher equivalence ratio of reactants produces a higher temperature, resulting in more heat transferring upstream, which causes a higher conversion ratio. For the same equivalence ratio, a higher isothermal boundary temperature will result in a higher conversion ratio. A longer residence time is required for cases with a lower equivalence ratio of reactants or a lower isothermal boundary of reactor.

AB - This paper presents an experimental study on the catalytic combustion of dimethyl ether under different oxidation conditions via a catalytic reactor filled with lab-made catalyst. The catalytic reactor is mounted in a tubular furnace for the purpose of heating and maintaining an isothermal boundary. The reaction profiles and light-off process are characterized by measuring the temperature time profiles, the axial temperature distribution in the reactor, and the average reaction temperature for various fuel quantities with different isothermal boundaries of reactor. The results show that the self-ignition of dimethyl ether without preheating cannot be initiated at room temperature. To ignite the catalytic reaction, the reactor needs to be preheated to 400K or higher. During the light-off process, the main exothermal reaction zone shift is found. The results also demonstrate that a higher equivalence ratio of reactants produces a higher temperature, resulting in more heat transferring upstream, which causes a higher conversion ratio. For the same equivalence ratio, a higher isothermal boundary temperature will result in a higher conversion ratio. A longer residence time is required for cases with a lower equivalence ratio of reactants or a lower isothermal boundary of reactor.

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Wu CY, Yu WC, Cheng CC, Lien YS. Characterization of catalytic combustion of DME in the fixed bed reactor. 2019. Paper presented at 12th Asia-Pacific Conference on Combustion, ASPACC 2019, Fukuoka, Japan.