1. Science
  2. Publications
  3. Information Processing Systems
  4. 4(155)'2018
  5. Application of the thermal-catalytic method for determining the heat-breaking ability of natural gas

Application of the thermal-catalytic method for determining the heat-breaking ability of natural gas

Kh. Shinkaruk, S. Chekhovsky
Annotations languages:


Description: This work is devoted to the study of the transition to gas accounting for its energy value. With the existing system of accounting and payment for gas in Ukraine, consumers, using the same number of cubic meters, receive a different calorific value. The article analyzes the most common methods for determining the heat of combustion of natural gas. To calculate the heat of combustion using direct and indirect methods. The most common is a calculation method based on chromatographic analysis of the composition of natural gas. The essence of the chromatographic method consists in the separation of a mixture of gases into individual gas components with their subsequent identification. Chromatographs are mainly laboratory facilities that are used at gas facilities to periodically monitor the quality of natural gas and ensure that its indicators comply with applicable regulations and standards. This method of determining the calorific value of natural gas is possible only with expensive equipment and at large gas metering points. Direct is the calorimetric method for determining the heat of combustion of natural gas, which is implemented using a gas water calorimeter of continuous action, based on direct measurement of the thermal energy of the gas, which is released as a result of its combustion. Taking into account the influence of the composition of natural gas on its thermophysical properties, the possibility of using methods based on the process of heat transfer in gases has been considered. Thermocatalytic and thermoconduction methods for analyzing gas composition are considered. A justification of the relevance and feasibility of using a thermocatalytic sensor as a sensitive element for the device for monitoring the heat of combustion of natural gas has been carried out. The advantages of the sensors based on thermal catalytic and thermal conductivity methods are simplicity of design, high speed. Therefore, an urgent task is to improve the existing methods and means of monitoring the energy value of natural gas and the creation of an express gas quality control device at the consumer, which will make gas metering more objective when used and in setting prices and tariffs.


Keywords: natural gas, gas quality, heat of combustion, thermocatalytic method, thermoconductometric method

References

1. State Standard (1987), “5542 Ghazy ghorjuchye pryrodnye dlja promyshlennogho y kommunaljno-bytovogho naznachenyja. Tekhnycheskye uslovyja” [5542 Flammable natural gas for industrial and public utilities. Technical specifica-tions], available at: www.docs.cntd.ru/document/gost-5542-87.
2. State Standard of Ukraine (2010), “15112: 2009 Pryrodnyj ghaz. Vyznachennja energhiji” [15112: 2009 Natural gas. Determination of energy], Derzhspozhyvstandart of Ukraine, Kyiv, 48 p.
3. State Standard (1987), “27193-86 Ghazy ghorjuchye pryrodnye. Metod opredelenyja teploty sghoranyja vodjanym kalo-rymetrom” [27193-86 Flammable natural gas. Method for determining the heat of combustion by a water calorimeter], available at: http://vsegost.com/Catalog/18/1813.shtml.
4. State Standard (1982), “22667-82 Ghazy ghorjuchye pryrodnye. Raschetnyj metod opredelenyja teploty sghoranyja, ot-nosyteljnoj plotnosty y chysla Vobbe” [22667-82 Flammable natural gas. Calculation method for determining the heat of combustion relative density and Wobbe number], available at: www. online.budstandart.com/ru/catalog/doc-page.html?id_doc=60686.
5. Darwai, I.Ya. (2009), “Teoretychne obgruntuvannja metodu vyznachennja teploty zghorjannja pryrodnogho ghazu” [Theoretical substantiation of the method of determining the heat of combustion of natural gas], Naftogazova power engineering: problems and perspectives: materials of the International scientific and technical conference and exhibition, Ivano-Frankivsk, October 20-23, pp.105.
6. Romanov, V.M. and Chekhovsky, S.A. (2014), “Doslidzhennja eksperymentaljnogho zrazka systemy kontrolju energ-hovmistu pryrodnogho ghazu” [Investigation of the experimental sample of the system for monitoring the energy content of natural gas], Metrology and devices, No. 1, pp. 192-196.
7. Malisevich, V.V., Serdiyuk, O.E. and Seredyuk, D.O. (2015), “Metrologhichna modelj napirnogho vytratomira pry kon-troli energhetychnoji cinnosti pryrodnogho ghazu” [Metrological model of a pressure flow meter in controlling the energy value of natural gas], Ukrainian Metrological Journal, No. 1, pp. 58-63.
8. Malisevich, V.V. and Sederyuk, O.E. (2013), “Doslidzhennja vplyvu jakisnykh parametriv pryrodnogho ghazu na funk-cionuvannja parcialjnogho vytratomira” [Investigation of the influence of natural gas quality parameters on the operation of a partial flow meter], Measuring technique and metrology, No. 74, pp. 158-163.
9. Polischuk, Y., Dorozovets, M., Stadnik, B. (2008), “Zasoby ta metody vymirjuvanj neelektrychnykh velychyn” [Means and methods of measuring non-electric quantities], Beskid Beat, Lviv, 618 p.
10. Chehovsky S.A., Pidus, N.M. and Shereiuk, O.E. (2010), “Metrologhija i tekhnologhichni vymirjuvannja v naftogha-zovijpromyslovosti” [Metrology and technological measurements in the oil and gas industry], IFNTUNG, Ivano-Frankivsk, 534 p. 11. “Sensory y bloky datchykov dlja pryborov ghazovogho analyza” [Sensors and sensor units for gas analyzers], available at: www.sensorgas.ru/poleznoe.html&art=8.
12. Shynkaruk, H., Pindus, N. and Chekhovsky, S. (2017), “Matematychna modelj termokonduktometrychnogho analiza-tora dlja doslidzhennja jakisnykh kharakterystyk ghazu” [Mathematical model of thermoconductivity analyzer for the study of qualitative gas characteristics], Abstracts of the 3rd International Scientific and Practical Conference “Quality Management in Education and Industry”, Lviv National Polytechnic University, Lviv, pp. 230-231.

Reference:
 Shynkaruk, Kh.M. and Chekhovskyi, S.A. (2018), “Zastosuvannia termokatalitychnoho metodu dlia vyznachennia teplotvornoi zdatnosti pryrodnoho hazu” [Application of the thermal-catalytic method for determining the heat-breaking ability of natural gas], Information Processing Systems, Vol. 4(155), pp. 161-165. https://doi.org/10.30748/soi.2018.155.23.