Experimental investigation of role of steam in entrained flow coal gasification

Crnomarkovic, Nenad; Repić, Branislav; Mladenovic, Rastko; Nešković, O.; Veljković, M.

doi:10.1016/j.fuel.2006.06.015

Cited by 55 publications

(20 citation statements)

References 10 publications

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“…As can be seen, calorific value of syngas, cold gas efficiency, and carbon conversion from the calculation of produced syngas increased with increasing oxygen/fuel ratio. Generally calorific value of syngas and cold gas efficiency decreased and carbon conversion increased with an increase of oxygen supply due to combustion reaction [17,18]. In spite of increasing carbon conversion, cold gas efficiency decreased because of increasing CO 2 concentration.…”

Section: Gasification Characteristicsmentioning

confidence: 99%

Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier

Lee

Yoon

Won

et al. 2010

Energy

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Section: Gasification Characteristicsmentioning

confidence: 99%

Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier

Lee

Yoon

Won

et al. 2010

Energy

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“…The utilization of coal in the direct combustion method will cause a problem in the pollution and a low efficiency of energy conversion. Gasification is one of the technology that can convert coal to be combustible gas with the low pollution [1][2] and high of the efficiency [2][3]. Indonesia is one of the largest coal-producing country in the world that have coal reserves about 3% from the world coal reserve [4] whereis about 57% of the reserve is the lignite coal [5].…”

Section: Introductionmentioning

confidence: 99%

Combustion of producer gas from gasification of south Sumatera lignite coal using CFD simulation

Vidian

Novia

Andy³

2017

MATEC Web Conf.

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Abstract.The production of gasses from lignite coal gasification is one of alternative fuel for the boiler or gas turbine. The prediction of temperature distribution inside the burner is important for the application and optimization of the producer gas. This research aims to provide the information about the influence of excess air on the temperature distribution and combustion product in the non-premixed burner. The process was carried out using producer gas from lignite coal gasification of BA 59 was produced by the updraft gasifier which is located on Energy Conversion Laboratory Mechanical Engineering Department Universitas Sriwijaya. The excess air used in the combustion process were respectively 10%, 30% and 50%. CFD Simulations was performed in this work using two-dimensional model of the burner. The result of the simulation showed an increase of excess air, a reduction in the gas burner temperature and the composition of gas (carbon dioxide, nitric oxide and water vapor).

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“…It can be produced from inexpensive carbonaceous feedstocks and the removal of contaminants such as sulphur from coal makes coal gasification a more environmentally friendly means of energy conversion compared to the normal combustion of solid coal. Also, it has a high conversion efficiency, is easy, and it is cost effective to remove carbon dioxide by the separation of highly concentrated CO 2 -stream, as inherent to all SNGprocesses [1][2][3]. The gasification process of a pressurized, oxygen-blown, entrained-flow E-Gas like gasifier through numerical modeling is investigated by solving the 3-D, steady-state Navier-Stokes equations with the Eulerian-Lagrangian method [4].…”

Section: Introductionmentioning

confidence: 99%

A Study on Energy Optimization of Heat Exchangers in a Gasification System

Nhut¹

2016

IJMEA

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The objective of this research is the optimization of energy parameters such as the temperature and flow rate of the fluid in heat exchangers in the gasification system in order to increase the recovery rate of energy in the system. A mathematical model of these heat exchangers is developed to predict their operating performance under the specified gasification system. The optimal flow rate and temperature of the fluid in the heat exchanger based on the effectiveness-number of transfer units(NTU) method is investigated. The result of the simulation shows that the optimal mass flow rate and temperature of the high pressure (HP) boiler feed water are determined at 175,907 kg/h and 110°C, respectively, while the optimal mass flow rate and temperature of high pressure saturated steam of boiler are determined at 238,430 kg/h, 290.5°C, respectively. At these values, the total heat amount obtained at these heat exchangers is highest with 169 MW. Besides, the total heat amount obtained at heat exchangers could be increased by 4.61% (7.8 MW) when sixty percent of the heat release amount from air cooler (12.78 MW) is used.

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Experimental investigation of role of steam in entrained flow coal gasification

Cited by 55 publications

References 10 publications

Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier

Gasification characteristics of coke and mixture with coal in an entrained-flow gasifier

Combustion of producer gas from gasification of south Sumatera lignite coal using CFD simulation

A Study on Energy Optimization of Heat Exchangers in a Gasification System

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