Archive - Известия Казанского государственного архитектурно-строительного университета.

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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Taymarov M.A. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State Power University The organization address: 420066, Russia, Kazan, Krasnoselskaya st., 51 Lavirko Yu.V. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleThe heat generating unit with the pyrolysis gas generation
Abstract.Problem statement. The aim of the work is to study the thermal characteristics of a designed and manufactured combined heat-generating unit for use in heating systems. The unit allows to receive charcoal and pyrolysis gas from the raw wood raw material. Results. The main results of the study are that with an increase in the pyrolysis temperature from 400 °C to 600 °C, the hydrogen content of the pyrolysis gas increases, which causes a reduction in the calorific value of the pyrolysis gas obtained at a temperature of 600 °C. The optimum temperature for producing pyrolysis gas is a temperature of 500 °C, at which the intensity of hydrogen formation is small compared to the amount of methane formed. Conclusions. The significance of the results obtained for the construction industry lies in the possibility of building boiler plants that use pyrolysis gas as the working fuel. The process of pyrolysis gas production must be carried out at temperatures of about 500 ° C, in which the share of methane in the pyrolysis gas is about 20 % by mass, and the share of hydrogen is about 15 %. If the pyrolysis gas will use as a gaseous fuel burned at 600 ° C (the proportion of hydrogen is 21 %), will need special burners because of the high rate of hydrogen burning compared to the combustion of methane. Pyrolysis gas with an increased hydrogen content of up to 21 % has wider ignition limits in a mixture with air compared to pyrolysis gas obtained at temperatures of about 500 ° C.
Keywords.pyrolysis, pyrolysis gas, composition, methane, carbon monoxide, hydrogen, wood, temperature, calorific value, excess air, limit of ignition.
For citations:Taymarov M.A., Lavirko Yu.V. The heat generating unit with the pyrolysis gas generation // Izvestiya KGASU. 2017. №3(41) P.158-165.

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