Features of the choice of thermal insulation material for ground degassing gas pipelines

Authors: Malashkina V.A.

Currently, the methane-air mixture extracted from gas coal mines is increasingly used in various areas: fuel in gas boilers, automobile fuel, the production of soot and various dyes, and so on. However, in all cases, for the stable operation of any production, it is necessary to ensure a continuous supply and a stable composition of the mine methane-air mixture. Part of the gas supply pipeline from the mouth of the mine shaft to the vacuum pumping station and further from it to the consumer is laid on the surface, which, especially in the cold season, is the main obstacle to ensuring the stable operation of consumers. Due to the freezing of the inner surface of the pipeline, its hydraulic cross-section is significantly reduced, and therefore the resistance increases. Therefore, the problem of correct calculation and selection of the necessary thermal insulation of ground degassing gas pipelines made of various materials is relevant. Of particular importance is the need to take into account both the thermal insulation properties of insulator materials and the thermal conductivity of pipelines, especially those made of composite materials. Currently, in addition to traditional thermal insulation materials, thermal insulation paints have been widely used, which perform not only the function of thermal insulation, but also protect steel pipelines from corrosion. The use of thermal insulation paints in coal mine degassing systems will allow not only to stabilize the supply of mine methane-air mixture to the consumer in terms of quantity, but also in terms of quality, regardless of the climatic conditions of the environment.

Keywords: degassing, hydraulic co-resisting, underground vacuum gas pipeline, methane-air mixture, fiberglass pipeline, tightness, greenhouse effect.
For citation:

Malashkina V. A. Features of the choice of thermal insulation material for ground degassing gas pipelines. MIAB. Mining Inf. Anal. Bull. 2021;(10-1):56—62. [In Russ]. DOI: 10.2 5018/0236_1493_2021_101_0_56.

Acknowledgements:
Issue number: 10
Year: 2021
Page number: 56-62
ISBN: 0236-1493
UDK: 622.831
DOI: 10.25018/0236_1493_2021_101_0_56
Article receipt date: 30.06.2021
Date of review receipt: 18.08.2021
Date of the editorial board′s decision on the article′s publishing: 10.09.2021
About authors:

Malashkina V. A., Dr. Sci. (Eng.), Professor of the Department of «Safety and ecology mining production» of the Moscow Мining Institute of the NUST “MISIS”, ORCID ID 0000-0001-9270-4790.

For contacts:
Bibliography:

1. Instrukciya po degazacii ugol’nyh shaht [Instructions for degassing coal mines]. Seriya 05. Vypusk 22. Moscow: ZAO «Nauchno-tekhnicheskij centr issledovanij problem promyshlennoj bezopasnosti», 2012. 250 p. [In Russ]

2. Malashkina V. A. Monitoring the effectiveness of the coal mine degassing system-the basis for safe work of miners. MIAB. Mining Inf. Anal. Bull. no. 6—1, 2020, pp.. 38—45. DOI: 10.25018/0236-1493-2020-61-0-38-45 [In Russ]

3. Krings T., Gerilowski K., Buchwitz M., Hartmann J., Sachs T., Erzinger J., Burrows J., Bovensmann H. Quantification of methane emission rates from coal mine ventilation shafts using airborne remote sensing data. Atmospheric Measurement Techniques. 2013. Vol. 6. pp. 151–166.

4. Karpov E. F., Ryazanov A. V. Avtomatizaciya i kontrol’ degazacionnyh sistem [Automation and control of degassing systems]. Moscow, Nedra, 1983. 190 p. [In Russ]

5. Malashkina V. A. Efficiency boosting feature of intensification of coal mine in degasification. MIAB. Mining Inf. Anal. Bull. no.9, 2019. pp. 131–137. DOI: 10.25018/0236-14932019-09-0-131-137 [In Russ]

6. Malashkina V. A. Recent trends in efficiency improvement in application of degasification systems in coal mines. MIAB. Mining Inf. Anal. Bull. no. 6 , 2019, pp. 206—214. DOI: 10.25018/0236—1493—2019—06—0-206—214 [In Russ]

7. Şuvar M. C., Lupu C., Arad V., Cioclea D., Păsculescu V. M., Mija N. Computerized simulation of mine ventilation networks for sustainable decision making process. Environmental Engineering and Management Journal. 2014. Vol. 13. no. 6. pp. 1445–1451.

8. Kobylkin S. S., Harisov A. R. Features of designing ventilation of coal mines using a chamber-column development system. Zapiski Gornogo Instituta. 2020. Tom 245. pp. 531— 538. DOI: 10.31897/PMI.2020.5.4 [In Russ]

9. Junjie Chen, Deguang Xu. Ventilation air Methane of Coal Mines as the Sustainable Energy Source. American Journal of Mining and Metallurgy. 2015. Vol. 3. Iss. 1. pp. 1–8.

10. Stroj L. F., Skal’skij V. A. Raschet i proektirovanie teplovyh setej [Calculation and design of heat networks]. Kiev: Budivel’nik, 1981. 147 p. [In Russ]

11. SP 41—103—2000 Proektirovanie teplovoj izolyacii oborudovaniya i truboprovodov. GP CNS Gosstroya Rossii Teploproekt GUP NIIMosstroj. Moscow, GUP CPP 2001. 42 p. [In Russ]

12. Wang Dongyuan, Zhao Zifeng, Tan Qiuxia, Yang Jian. Research on Design Method for Thermal Insulation of Oil Pipeline in Permafrost Regions. China Petroleum Pipeline Engineering Corporation.China 2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020) E3S Web of Conferences 165, 01016 (2020) 4r. Doi. org/10.1051/e3sconf/202016501016.

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