A new approach to reducing slagging based on laser modification of heating surfaces: Field tests and mathematical modeling
| Parent link: | Fuel.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 382.— 2025.— Article number 109259, 18 p. |
|---|---|
| Other Authors: | , , , , , , |
| Summary: | Title screen The article presents the results of field tests of a new approach to reducing slagging of a boiler furnace. The approach involves laser radiation treatment of metal surfaces to obtain a coating with a high degree of passivation and a special texture (microchannel or anisotropic). Due to the texture and formation of the oxide layer, the resistance of the heating surfaces to adhesion of hydrocarbon fuel combustion products, including slag, is increased. Field tests were conducted over 60 days in an operating boiler burning brown coal, the combustion products of which form solid ferrous and sulfate–calcium deposits. The study used scanning microscopy, X-ray fluorescence spectral analysis and mass analysis of slag deposits. The results showed that steel samples with the Microchannels texture formed by laser radiation are characterized by increased resistance to adhesion of brown coal slag. Using the original software code, a mathematical model has been developed to describe the slag deposition process on heat exchange surfaces modified by laser radiation. A numerical simulation was performed under conditions of dynamic change in the thickness of the slag layer on the surface of the heat exchanger pipe to assess the heat transfer characteristics in the “hot flue gases – slag layer – pipe wall – liquid coolant” system. The results showed that the steel surface modified by laser radiation, compared to the untreated surface, is resistant to slagging at the initial stages of interaction with molten ash from different types of fuel. The use of laser-modified surfaces in boiler furnaces will increase the intervals between procedures for cleaning the furnace from slag by up to 64 %. Also, due to the increase in absorbed heat per unit area by 1.6–2.2 times, the use of laser-modified surfaces increases the efficiency of energy production Текстовый файл AM_Agreement |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.fuel.2024.133778 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=678261 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 678261 | ||
| 005 | 20250403072126.0 | ||
| 090 | |a 678261 | ||
| 100 | |a 20250120d2025 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a NL | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i |b e | |
| 182 | 0 | |a b | |
| 183 | 0 | |a cr |2 RDAcarrier | |
| 200 | 1 | |a A new approach to reducing slagging based on laser modification of heating surfaces: Field tests and mathematical modeling |f D. V. Feoktistov, D. O. Glushkov, K. K. Paushkina [et al.] | |
| 203 | |a Текст |b визуальный |c электронный | ||
| 283 | |a online_resource |2 RDAcarrier | ||
| 300 | |a Title screen | ||
| 320 | |a References: 43 tit | ||
| 330 | |a The article presents the results of field tests of a new approach to reducing slagging of a boiler furnace. The approach involves laser radiation treatment of metal surfaces to obtain a coating with a high degree of passivation and a special texture (microchannel or anisotropic). Due to the texture and formation of the oxide layer, the resistance of the heating surfaces to adhesion of hydrocarbon fuel combustion products, including slag, is increased. Field tests were conducted over 60 days in an operating boiler burning brown coal, the combustion products of which form solid ferrous and sulfate–calcium deposits. The study used scanning microscopy, X-ray fluorescence spectral analysis and mass analysis of slag deposits. The results showed that steel samples with the Microchannels texture formed by laser radiation are characterized by increased resistance to adhesion of brown coal slag. Using the original software code, a mathematical model has been developed to describe the slag deposition process on heat exchange surfaces modified by laser radiation. A numerical simulation was performed under conditions of dynamic change in the thickness of the slag layer on the surface of the heat exchanger pipe to assess the heat transfer characteristics in the “hot flue gases – slag layer – pipe wall – liquid coolant” system. The results showed that the steel surface modified by laser radiation, compared to the untreated surface, is resistant to slagging at the initial stages of interaction with molten ash from different types of fuel. The use of laser-modified surfaces in boiler furnaces will increase the intervals between procedures for cleaning the furnace from slag by up to 64 %. Also, due to the increase in absorbed heat per unit area by 1.6–2.2 times, the use of laser-modified surfaces increases the efficiency of energy production | ||
| 336 | |a Текстовый файл | ||
| 371 | 0 | |a AM_Agreement | |
| 461 | 1 | |t Fuel |c Amsterdam |n Elsevier Science Publishing Company Inc. | |
| 463 | 1 | |t Vol. 382 |v Article number 109259, 18 p. |d 2025 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a slagging | |
| 610 | 1 | |a scanning microscopy | |
| 610 | 1 | |a X-ray fluorescence spectral analysis | |
| 610 | 1 | |a mass analysis | |
| 701 | 1 | |a Feoktistov |b D. V. |c Specialist in the field of thermal engineering |c Associate Professor; Deputy Director of Tomsk Polytechnic University, Candidate of technical sciences |f 1983- |g Dmitriy Vladimirovich |y Tomsk |9 17698 | |
| 701 | 1 | |a Glushkov |b D. O. |c specialist in the field of power engineering |c Professor, Director of the ISHFVP of the Tomsk Polytechnic University, Doctor of Technical Sciences |f 1988- |g Dmitry Olegovich |9 16419 | |
| 701 | 1 | |a Paushkina |b K. K. |c specialist in the field of heat and power engineering |c Engineer of Tomsk Polytechnic University, assistant |f 1998- |g Kristina Konstantinovna |9 22949 | |
| 701 | 1 | |a Orlova |b E. G. |c specialist in the field of thermal engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1991- |g Evgeniya Georgievna |9 17697 | |
| 701 | 1 | |a Laga |b E. Yu. |c physicist |c Engineer of Tomsk Polytechnic University |f 1992- |g Ekaterina Yurjevna |9 88616 | |
| 701 | 1 | |a Zhuykov |b A. V. |g Andrey Vladimirovich | |
| 701 | 1 | |a Vershinina |b K. Yu. |c specialist in the field of heat and power engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1992- |g Kseniya Yurievna |9 17337 | |
| 801 | 0 | |a RU |b 63413507 |c 20250120 | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1016/j.fuel.2024.133778 |z https://doi.org/10.1016/j.fuel.2024.133778 | |
| 942 | |c CF | ||