Dissociation characteristics and anthropogenic emissions from the combustion of double gas hydrates; Environmental Research; Vol. 214, Pt. 3
| Parent link: | Environmental Research Vol. 214, Pt. 3.— 2022.— [113990, 11 p.] |
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| 共著者: | , |
| その他の著者: | , , , , , , |
| 要約: | Title screen Gas hydrates are an alternative and environmentally friendly energy source increasingly in the focus of scientific attention. The physicochemical processes behind gas hydrate combustion are studied experimentally and numerically with a view to improving the combustion efficiency and reducing gas emissions. It is important to estimate the pollutant emission concentrations in the context of combustion conditions. The research deals with the dissociation and combustion behavior of double gas hydrates in a tubular muffle furnace. Gas hydrates of different composition are considered: methane, methane-ethane, methane-propane and methane-isopropanol. Double gas hydrates are characterized by more stable combustion compared to methane hydrate. It is also shown that the double gas hydrate dissociation rate increases by 15-30% with increasing temperature. Dissociation and combustion processes were also modeled as part of the research, accounting for phase transitions in a gas hydrate layer. According to the simulation results, the total dissociation rate of gas hydrate increases by 3 times with an about 2.5-times increase in the powder layer thickness. Our experiments also focused on the impact of furnace temperature and gas hydrate composition on concentrations of anthropogenic gas emissions. We have found that the presence of heavy hydrocarbons such as ethane, propane and isopropanol in double gas hydrates reduce unburned CH4 emissions by 60%. Also, an increase in the combustion efficiency of double gas hydrates, accompanied by a decrease in the concentrations of unburned CH4 and CO, affects the yield of CO2, which increased by 13-35%. When we increased the temperature in the furnace from 750 °C to 1050 °C, concentrations of nitrogen oxides and carbon dioxide increased by up to five times. Thus, the resulting correlations between the key parameters of these processes and a set of the main inputs illustrate the possibility to predict the optimal conditions for the combustion of gas hydrates. Режим доступа: по договору с организацией-держателем ресурса |
| 言語: | 英語 |
| 出版事項: |
2022
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| 主題: | |
| オンライン･アクセス: | https://doi.org/10.1016/j.envres.2022.113990 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668816 |
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| 200 | 1 | |a Dissociation characteristics and anthropogenic emissions from the combustion of double gas hydrates |f D. V. Antonov, I. G. Donskoy, O. S. Gaydukova [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 330 | |a Gas hydrates are an alternative and environmentally friendly energy source increasingly in the focus of scientific attention. The physicochemical processes behind gas hydrate combustion are studied experimentally and numerically with a view to improving the combustion efficiency and reducing gas emissions. It is important to estimate the pollutant emission concentrations in the context of combustion conditions. The research deals with the dissociation and combustion behavior of double gas hydrates in a tubular muffle furnace. Gas hydrates of different composition are considered: methane, methane-ethane, methane-propane and methane-isopropanol. Double gas hydrates are characterized by more stable combustion compared to methane hydrate. It is also shown that the double gas hydrate dissociation rate increases by 15-30% with increasing temperature. Dissociation and combustion processes were also modeled as part of the research, accounting for phase transitions in a gas hydrate layer. According to the simulation results, the total dissociation rate of gas hydrate increases by 3 times with an about 2.5-times increase in the powder layer thickness. Our experiments also focused on the impact of furnace temperature and gas hydrate composition on concentrations of anthropogenic gas emissions. We have found that the presence of heavy hydrocarbons such as ethane, propane and isopropanol in double gas hydrates reduce unburned CH4 emissions by 60%. Also, an increase in the combustion efficiency of double gas hydrates, accompanied by a decrease in the concentrations of unburned CH4 and CO, affects the yield of CO2, which increased by 13-35%. When we increased the temperature in the furnace from 750 °C to 1050 °C, concentrations of nitrogen oxides and carbon dioxide increased by up to five times. Thus, the resulting correlations between the key parameters of these processes and a set of the main inputs illustrate the possibility to predict the optimal conditions for the combustion of gas hydrates. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Environmental Research | ||
| 463 | |t Vol. 214, Pt. 3 |v [113990, 11 p.] |d 2022 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a double gas hydrate | |
| 610 | 1 | |a dissociation | |
| 610 | 1 | |a combustion | |
| 610 | 1 | |a heat transfer | |
| 610 | 1 | |a anthropogenic emission | |
| 610 | 1 | |a газогидраты | |
| 610 | 1 | |a диссоциация | |
| 610 | 1 | |a горение | |
| 610 | 1 | |a теплопередача | |
| 610 | 1 | |a эмиссии | |
| 701 | 1 | |a Antonov |b D. V. |c specialist in the field of heat and power engineering |c Associate Professor, Research Engineer at Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1996- |g Dmitry Vladimirovich |3 (RuTPU)RU\TPU\pers\46666 |9 22322 | |
| 701 | 1 | |a Donskoy |b I. G. |g Igor Gennadjevich | |
| 701 | 1 | |a Gaydukova |b O. S. |c specialist in the field of heat and power engineering |c Research Engineer of Tomsk Polytechnic University |f 1993- |g Olga Sergeevna |3 (RuTPU)RU\TPU\pers\46480 |9 22145 | |
| 701 | 1 | |a Misyura |b S. Ya. |c specialist in the field of power engineering |c leading researcher of Tomsk Polytechnic University, candidate of technical sciences |f 1964- |g Sergey Yakovlevich |3 (RuTPU)RU\TPU\pers\39641 |9 21039 | |
| 701 | 1 | |a Morozov |b V. S. |g Vladimir Sergeevich | |
| 701 | 1 | |a Nyashina |b G. S. |c specialist in the field of heat and power engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Technical Sciences |f 1992- |g Galina Sergeevna |y Tomsk |3 (RuTPU)RU\TPU\pers\35843 |9 18988 | |
| 701 | 1 | |a Strizhak |b P. A. |c Specialist in the field of heat power energy |c Doctor of Physical and Mathematical Sciences (DSc), Professor of Tomsk Polytechnic University (TPU) |f 1985- |g Pavel Alexandrovich |3 (RuTPU)RU\TPU\pers\30871 |9 15117 | |
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