Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
BIBLIOMETRIC ANALYSIS OF BIOMETHANE
Submission Author:
Mônica Valéria dos Santos Machado , SP
Co-Authors:
Mônica Valéria dos Santos Machado, Ivonete Ávila, João Carvalho
Presenter: Mônica Valéria dos Santos Machado
doi://10.26678/ABCM.COBEM2023.COB2023-0275
Abstract
Global gas markets are changing as a result of the switch from fossil natural gas (NG) to renewable natural gas (RNG). RNG is also known as biomethane because it is produced by processing biogas. According to the Brazilian Petroleum, Natural Gas and Biofuels Agency (ANP), the molar concentration of CH4 in biomethane must be above 95%. This renewable energy can be injected into the gas pipeline networks of NG and offers opportunities for increasing use in the industrial and domestic sectors. This new condition raises a discussion about the extent to which variations in gas quality will occur and what will be allowed, as variations in combustion characteristics can affect the process, with consequences for consumers, distributors and gas producers. In this study, gas quality is analysed in relation to the use of RNG blended with NG. Gas interchangeability indicators are considered to provide an expected gas quality level to be achieved or maintained for efficient combustion in industrial and other applications. Correlations are developed incorporating parameters such as air-gas ratio, combustion product-gas ratio, lower heating value, adiabatic flame temperature, furnace temperature, flame length, flame emissivity, Wobbe index and Weaver index. The main results presented in this article are: - Models to predict the specific consumption of NG and RNG blends for different industrial processes. Specific industrial processes that can use RNG are analyzed. - Analysis of the conditions for injecting RNG into the networks of NG, in order to maintain the conditions without injecting RNG, i.e. without causing instabilities and/or changes in the plants and in the production process. - Evaluation of the possible scenarios to improve the quality of the distributed gas. - Evaluation of the costs associated with RNG compared to NG.
Keywords
Renewable Natural Gas, natural gas, Optimization of fuel consumption
