Study on dynamic heat extraction characteristics of heat exchanger tube embedded in thermal flow reverse reactor for heat recovery

被引：9

作者：

Shi, Yueyue ^{[1
]}

Liu, Yongqi ^{[1
]}

Zhou, Yuqi ^{[1
]}

Sun, Peng ^{[1
]}

Mao, Mingming ^{[1
]}

Zhang, Yuqiu ^{[1
]}

机构：

[1] Shandong Univ Technol, Sch Transportat & Vehicle Engn, West Xincun St 266, Zibo 255000, Peoples R China

来源：

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION | 2022年 / 162卷

基金：

国家重点研发计划;

关键词：

Heat recovery; Dynamic heat extraction characteristic; Heat exchanger tubes; Periodic conditions; Regenerative oxidizers; VENTILATION AIR METHANE; LEAN METHANE; FINNED TUBE; PACKED-BED; OXIDATION; COMBUSTION; TEMPERATURE; MITIGATION; WITHDRAWAL; DESIGN;

D O I：

10.1016/j.psep.2022.04.064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In industry, the thermal flow reverse reactor (TFRR) is considered to be an effective means to reduce ventilation air methane (VAM) from fossil fuel operations. The purpose of VAM combustion is either to reduce the emission of greenhouse gas, to recover energy, or both these subjects. The heat exchanger tubes have been embedded on both sides of high-temperature zone of the regenerative oxidizer for heat recovery in this study to improve economy. The mathematical model is established, as well as the effects of inlet methane concentration and air flow rate on dynamic heat extraction characteristics of heat exchanger tubes under periodic conditions are investigated. The results show that sustainable and stable heat recovery can be achieved when the concentration is greater than 0.6 vol.% and the air flow rate is less than 596 m3/h. Heat extraction mainly depends on downstream heat exchange tubes. The asymmetry of heat transfer process between upstream and downstream heat exchanger tubes is analyzed. It is worth noting that the asymmetry is improved at high inlet methane concentration and low air flow rate. The heat recovery efficiency by the bilateral heat exchanger tubes is 61.72% at most, which provides a reliable theoretical basis for the heat extraction mechanism of the heat exchanger embedded in TFRR. (c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：846 / 858

页数：13

共 37 条

[1] Capturing energy from ventilation air methane a preliminary design for a new approach [J].

Cluff, D. L. ;

Kennedy, G. A. ;

Bennett, J. G. ;

Foster, P. J. .

APPLIED THERMAL ENGINEERING, 2015, 90 :1151-1163

[2] Coal mine ventilation air methane combustion in a catalytic reverse flow reactor: Influence of emission humidity [J].

Fernandez, Javier ;

Marin, Pablo ;

Diez, Fernando V. ;

Ordonez, Salvador .

FUEL PROCESSING TECHNOLOGY, 2015, 133 :202-209

[3] Experimental Research on the Thermal Oxidation of Ventilation Air Methane in a Thermal Reverse Flow Reactor [J].

Gao, Peng-Fei ;

Gou, Xiao-Long .

ACS OMEGA, 2019, 4 (12) :14886-14894

[4] Influence of packed honeycomb ceramic on heat extraction rate of packed bed embedded heat exchanger and heat transfer modes in heat transfer process [J].

Gao Zengli ;

Liu Yongqi ;

Gao Zhenqiang .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2015, 65 :76-81

[5] Heat extraction characteristic of embedded heat exchanger in honeycomb ceramic packed bed [J].

Gao, Zengli ;

Liu, Yongqi ;

Gao, Zhenqiang .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2012, 39 (10) :1526-1534

[6] Efficiency of heat recovery versus maximum catalyst temperature in a reverse-flow combustion of methane [J].

Gosiewski, K .

CHEMICAL ENGINEERING JOURNAL, 2005, 107 (1-3) :19-25

[7] Effect of the mode of heat withdrawal on the asymmetry of temperature profiles in reverse-flow reactors. Catalytic combustion of methane as a test case [J].

Gosiewski, Krzysztof ;

Warmuzinski, Krzysztof .

CHEMICAL ENGINEERING SCIENCE, 2007, 62 (10) :2679-2689

[8] Aerodynamic CFD simulations of experimental and industrial thermal flow reversal reactors [J].

Gosiewski, Krzysztof ;

Pawlaczyk-Kurek, Anna .

CHEMICAL ENGINEERING JOURNAL, 2019, 373 :1367-1379

[9] Catalytic or thermal reversed flow combustion of coal mine ventilation air methane: What is better choice and when? [J].

Gosiewski, Krzysztof ;

Pawlaczyk, Anna .

CHEMICAL ENGINEERING JOURNAL, 2014, 238 :78-85

[10] A study on thermal combustion of lean methane-air mixtures: Simplified reaction mechanism and kinetic equations [J].

Gosiewski, Krzysztof ;

Pawlaczyk, Anna ;

Warmuzinski, Krzysztof ;

Jaschik, Manfred .

CHEMICAL ENGINEERING JOURNAL, 2009, 154 (1-3) :9-16

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