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Combustion Characteristics of Plant Chemical Polyol Waste Liquor in a Pilot Water-Cooled Incinerator

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  • Dawei Wang

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
    WuHan Boiler Energy Engineering CO., LTD, No.1 Jiangxia Avenue, Miaoshan Development District, Wuhan 430200, China)

  • Guangbo Zhao

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Chuanming Du

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Dongdong Feng

    (School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)

  • Lin Wang

    (WuHan Boiler Energy Engineering CO., LTD, No.1 Jiangxia Avenue, Miaoshan Development District, Wuhan 430200, China)

Abstract

In the production of plant chemical alcohol, a large amount of salty high-concentration organic waste liquid is by-produced, in which a large amount of high-value sodium tungstate and chemical heat energy are contained. Through the design of the pilot water-cooled incinerator, the operating parameters and the characteristics of alkali ash deposition of the waste incinerator were tested. The pilot incinerator is a natural-cycle steam boiler, has a full water-cooled II-type structure, with liquid slag discharge, and the furnace design has selected reasonable volumetric heat load and flue gas residence time. Combustion distribution is the core parameter affecting the combustion of waste liquid. Studies have shown that increasing the primary air rate and the excess air coefficient are beneficial to improve the combustion performance of waste liquid, increase steam production, and reduce CO and SO 2 emissions in flue gas, but also increase the concentration of NO. When the excess air ratio was 1.2, and the primary air ratio was 0.65, the NO concentration in the tail flue gas was less than 10 ppm, and the SO 2 concentration was zero. The TG-DTA method measured that when the alkali ash melting temperature was less than 587 °C, the alkali ash had strong adhesion in the high temperature zone of the incinerator and less deposition in the low temperature region of the tail. The alkali ash deposition rate and relative deposition rate were used to quantitatively study the characteristic of alkali ash deposition.

Suggested Citation

  • Dawei Wang & Guangbo Zhao & Chuanming Du & Dongdong Feng & Lin Wang, 2019. "Combustion Characteristics of Plant Chemical Polyol Waste Liquor in a Pilot Water-Cooled Incinerator," Energies, MDPI, vol. 12(22), pages 1-18, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4369-:d:287656
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    References listed on IDEAS

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    1. Feng, Dongdong & Zhang, Yu & Zhao, Yijun & Sun, Shaozeng, 2018. "Catalytic effects of ion-exchangeable K+ and Ca2+ on rice husk pyrolysis behavior and its gas–liquid–solid product properties," Energy, Elsevier, vol. 152(C), pages 166-177.
    2. Dawei Wang & Chuanming Du & Dongdong Feng & Yuting Li & Yu Zhang & Yijun Zhao & Guangbo Zhao, 2019. "The Thermal Swelling Properties of Plant Chemical Alcohol Waste Liquid," Energies, MDPI, vol. 12(21), pages 1-11, November.
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