Techno-Economic Analysis of a 600 MW Oxy-Enrich Pulverized Coal-Fired Boiler

Lei, Ming; Sun, Cen; Wang, Chunbo

doi:10.3390/en11040768

Cited by 10 publications

(4 citation statements)

References 26 publications

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“…Coal is still one of the most important energy resources in China; it accounts for~62% of the total energy demand nowadays and causes many environmental problems such as SOx, NOx, PM (particulate matter) and heavy metals [1][2][3][4][5][6]. The newly discovered Zhundong coal field is the largest intact coalfield with a predicted reserve of~390 billion tons, located in Junggar Basin in the Xinjiang Autonomous Region of China.…”

Section: Introductionmentioning

confidence: 99%

Emission Behaviors of Inorganic Ultrafine Particles during Zhundong Coal Oxy-Fuel Combustion with Characterized Oxygen Input Fractions Comparable to Air Combustion

et al. 2018

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Zhundong low-rank coal is very likely to be utilized extensively in oxy-fired boilers in the near future. Its PM10 (particulate matter with an aerodynamic diameter of ≤10 μm) emission behaviors during oxy-fuel combustion need to be carefully studied before its large-scale use. The present study examines the emission behaviors of inorganic ultrafine particles (PM0.5, with an aerodynamic diameter of ≤0.5 μm), as well as PM10 during the combustion of Zhundong coal in air and oxy-fuel conditions (O2/CO2) at three characterized O2 input fractions, i.e., 21, 27 and 32 vol.%. The combustion experiments were carried out in a high-temperature drop-tube furnace (HDTF) at a combustion temperature of 1500 °C. The results show that PM0.5 is composed of Na, S, Mg and Ca, with total fractions of ~90%, while PM0.5–10 (with an aerodynamic diameter between 0.5 and 10 μm) predominantly contains Ca (~50–65%). At three characterized oxygen fractions during oxy-fuel combustion (OXY21, 27 and 32), the promoted O2 fraction was found to increase the yields of both PM0.5 and PM0.5–10. A higher particle-burning temperature and a lower CO2 fraction promote the reactions of both organically bound elements and inorganic minerals, increasing the partitioning of Mg and Ca and causing an increased yield of PM0.5. The yield of PM0.5 from air is high and similar to that from OXY32 while the yield of PM0.5–10 from air is similar to that from OXY27. The high yield of PM0.5 from air is mainly generated by the highest yields of Ca in four conditions.

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Section: Introductionmentioning

confidence: 99%

Emission Behaviors of Inorganic Ultrafine Particles during Zhundong Coal Oxy-Fuel Combustion with Characterized Oxygen Input Fractions Comparable to Air Combustion

et al. 2018

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“…In particular, liquid CO 2 is extremely efficient in cooling thanks to its high vaporization heat. Moreover, the use of liquid CO 2 can reduce the carbon emission to the air, as evidenced by the previous research on CO 2 capture and storage [14][15].…”

Section: Introductionmentioning

confidence: 82%

Application of liquid CO2 conveying technology for fire control in goaf

Wang¹,

Zhai²,

Deng³

et al. 2018

IJHT

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This paper aims to design a desirable method to inject liquid CO2 directly to the deep underground via long-distance pipe. To this end, a liquid CO2 transport technology was put forward and applied to cool down the fire area in an underground coal mine. To ensure the liquid phase of CO2, the pipe pressure was controlled by adjusting the flows at the inlet and outlet of the storage tank, and the pressure, flow and temperature parameters were monitored at several key positions. Through the theoretical analysis and case study, the proposed liquid CO2 transport system was proved as feasible under the control of pipe pressure. The results show that the pressure of 2.2MPa is applicable for liquid CO2 transport system, and the pressure change in the pipe hinges on the pressure at liquid CO2 tank, vertical depth and pipe length. By this system, the temperature of liquid CO2 could be controlled as low as-15 o C. The research findings provide valuable insights on the application of liquid CO2 in fire control in underground coal mines

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“…Te oxy-enriched combustion or incineration (OEC) of MSW appears capable of addressing the conventional incineration issues, through the use of O 2 /N 2 as an oxidizing agent with an oxygen concentration higher than 21% (typically lesser than 30%). Te uses of OEC have several merits, such as high combustion efciency, low pollutant emissions (CO 2 concentration of only 30-40 vol%), acceleration of combustion speed, and promotion of combustion safety [67][68][69].…”

Section: Oxy-enriched Incineration Of Municipal Solid Waste (Msw)mentioning

confidence: 99%

The Production of Industrial-Grade Oxygen from Air by Pressure Swing Adsorption

Chin

Kamin

Bahrun

et al. 2023

International Journal of Chemical Engineering

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Oxygen, an odorless and colorless gas constituent of the atmosphere, is a vital gas component for the Earth, as it makes up 21% of the composition of the air we breathe. Apart from the importance of oxygen for human breathing, its highly pure form is demanding for industrial applications. As such, several technologies have been established to increase the oxygen purity from 21% to somewhat higher than 95%. One of the competitive technologies for producing this high-purity oxygen from the air is through pressure swing adsorption (PSA), which has the advantages of low cost and energy while being highly efficient. Also, PSA is a simple and flexible system due to its ability to start up and shut down more rapidly since its operation occurs at ambient temperature, which is enabled through the use of adsorbents to bind and separate the air molecules. The enhancement of the PSA’s performances was reported through the modification of PSA step cycles and material (zeolite) tailoring. A simplified complete set of a mathematical model is included for modelling the PSA system, aiming to ease the experimental burden of the process design and optimization of an infinite modification of PSA step cycles. Finally, some technological importance of oxygen production via PSA, particularly for onboard oxygen generation system and oxy-enriched incineration of municipal solid waste, was discussed. Continuous development of PSA will make significant contributions to a wide range of chemical industries in the near future, be it for oxygen production or other gas separation applications.

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Techno-Economic Analysis of a 600 MW Oxy-Enrich Pulverized Coal-Fired Boiler

Cited by 10 publications

References 26 publications

Emission Behaviors of Inorganic Ultrafine Particles during Zhundong Coal Oxy-Fuel Combustion with Characterized Oxygen Input Fractions Comparable to Air Combustion

Emission Behaviors of Inorganic Ultrafine Particles during Zhundong Coal Oxy-Fuel Combustion with Characterized Oxygen Input Fractions Comparable to Air Combustion

Application of liquid CO2 conveying technology for fire control in goaf

The Production of Industrial-Grade Oxygen from Air by Pressure Swing Adsorption

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