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Competition for renewable and non-renewable resources in the mining sector
Published in Izabela Jonek-Kowalska, Radosław Wolniak, Oksana A. Marinina, Tatyana V. Ponomarenko, Stakeholders, Sustainable Development Policies and the Coal Mining Industry, 2022
Izabela Jonek-Kowalska, Radosław Wolniak, Oksana A. Marinina, Tatyana V. Ponomarenko
Clean coal technologies are an opportunity for the mining industry. The term Clean Coal Technologies refers to the entire carbon chain from the extraction of coal to the disposal of the residues of its use (Franco and Diaz, 2009). The use of modern coal combustion and gasification technologies is especially important (Ding et al., 2021). These can include: oxy-combustion technologies or combustion in oxygen: Combustion in oxygen leads to a significant reduction in the amount of flue gas emitted, which reduces the cost of flue gas cleaning. The problem is that such systems require the construction of an air separation plant, which is a source of large investment costs and energy consumption.coal gasification technologies in polygeneration systems: The solution offers the opportunity to increase the overall efficiency of primary energy use and significantly improve the economics of production. The technology allows for the removal of carbon dioxide from the gas before the combustion process, which results in lower losses in electricity generation efficiency compared to classic combustion technologies.(Marcisz et al., 2017; Breault, 2020)
2-Rich Natural Gas to Energy Supply-Chain
Published in Subhas K Sikdar, Frank Princiotta, Advances in Carbon Management Technologies, 2020
Ofélia de Queiroz Fernandes Araújo, Stefano Ferrari Interlenghi, José Luiz de Medeiros
In oxy-combustion, pure O2 is employed for NG firing, reducing the carbon intensity of the power generation (Al-Mamoori et al., 2017). Oxy-combustion results in a highly CO2 concentrated flue-gas and steam (Araújo and de Medeiros, 2017). Water vapor can simply be condensed in order to obtain an almost pure CO2 stream, avoiding capital intensive capture technologies. The main bottleneck in oxy-combustion is the cost of producing pure O2 via cryogenic separation from air.
2 Sequestration
Published in S. Komar Kawatra, Advanced Coal Preparation and Beyond, 2020
Oxy-combustion capture: perform the fuel combustion in an oxygen-rich atmosphere, so that the resulting flue gas is a nearly pure CO2 stream to begin with. Does not require changing the theoretical unit operations, but the limits of the equipment must be taken into consideration as combustion temperatures in pure oxygen can be dramatically higher than in air.
Numerical study on combustion performance of propane non-premixed mild in O2/CO2 atmosphere
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022
Pengsheng Shi, Weijuan Yang, Pengfei Wu, Junhu Zhou, Jianzhong Liu
MILD (moderate or intense low-oxygen dilution) combustion is a novel mild combustion technology (Cavaliere and De Joannon 2004; Wünning and J G 1997), and it performs uniform temperature, stable combustion, and low noise. Moreover, MILD combustion can inhibit NOX emission by more than 70% and improve combustion efficiency by more than 30%(Duwig et al. 2007; Galletti, Parente, and Tognotti 2007). Oxygen-rich combustion technology, as one of the key technologies of carbon dioxide capture, utilization, and storage (CCUS), is of great significance to CO2 emission reduction and has received extensive attention. MILD oxy-combustion technology, which was born by combining oxygen-rich combustion and MILD combustion technology, is an update advanced technology to solve environmental pollution and climate warming (Li et al. 2011).
The Ni-converter – an historic perspective
Published in Mineral Processing and Extractive Metallurgy, 2019
Peter Rozelle, Seetharaman Sridhar, Paul B. Queneau, Shane Thompson
At the 2009 TMS Annual Meeting in San Francisco, the International Peirce Smith Converting Symposium was held. One paper, by Thomas Price and colleagues (Price et al. 2009), suggested the use of recycled process SO2 as a substitute for nitrogen (in air) in the blast to the Peirce Smith Converter. Rather than a mixture of oxygen and nitrogen, as is the case with oxygen-enriched air; a portion (or all) of the nitrogen present would be replaced with SO2. This is a direct analogy with oxy-combustion as under development for electric power generation. Oxy-combustion uses recycled CO2, a product of combustion, as an oxygen diluent for the combustion process (Anonymous 2012), in effect replacing nitrogen. In the case of the Peirce Smith Converter, SO2 is the ‘product of combustion’, and would be recycled and fed to the converter along with oxygen from an Air Separation Unit (ASU).
Modeling Coal Swelling during Pyrolysis at Elevated Pressure by Using a Single Bubble Model: Validation and Application
Published in Combustion Science and Technology, 2023
Jiaye Zhang, Chongming Chen, Jie Lu, Zhaochen Shi, Ao Zhou, Houzhang Tan, Xuebin Wang
Pressurized oxy-combustion is one of the most promising technologies for carbon capture and storage (CCS), which could produce more gross power and achieve higher net efficiency than conventional atmospheric oxy-coal combustion power systems (Rahman et al. 2021). Recently, several advanced oxy-combustion processes, e.g., the Staged Pressurized Oxy-combustion (SPOC) (Yang et al. 2021), Pressurized Fluidized Bed Oxy-combustion (Li et al. 2021) have been developed, and the net generation efficiency can reach 37%. Still now, there are only very few experimental data regarding the fundamental knowledge for pressurized oxy-fuel combustion.