Production of hydrogen-rich synthetic gas from low-grade coals by microwave steam-plasmas

Uhm, Han S.; Na, Young H.; Hong, Yong Cheol; Shin, Dong Hun; Cho, Chang H.

doi:10.1016/j.ijhydene.2014.01.020

Cited by 37 publications

(27 citation statements)

References 15 publications

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“…Power range Type of fuel [7] Microwave 0e6 kW Ethanol [13] DC 118.8 kW Coal [10] Microwave 0.8e1 kW Spirulina algae [18] RF 10 kW MSW with raw wood [14] Microwave 75 kW Indonesian brown coal [16] Microwave 2 kW Glycerol [20] Microwave 0e5 kW Shenhua Coal [15] Microwave 4 kW Indonesian brown coal [8] Microwave 5 kW Coal and Charcoal [21] RF 10 kW Rice Straw [9] RF 357e664 W Rice straw [22] DC e Wood [12] RF 1.6e2 kW Tire powder [23] RF 0e2 kW Polyethylene [24] DC 100 kW Carpet waste USAF BEAR waste base [19] Microwave 600 W Polyethylene [25] Microwave 2.8 kW n-Hexane i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y x x x ( 2 0 1 6 ) 1 e5 power consumption of plasma system. If the power level is high, the conversion reaches up to 99%.…”

Section: Reference Type Of Plasma Gasificationmentioning

confidence: 99%

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A review on plasma gasification for solid waste disposal

Şanlisoy

Çarpınlıoǧlu

2017

International Journal of Hydrogen Energy

141

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Section: Reference Type Of Plasma Gasificationmentioning

confidence: 99%

“…Uhm et al [14] used the low grade Indonesian coal at 1640 C reactor temperature. The cold gas efficiency reached up to %84 in this study.…”

Section: Reference Type Of Plasma Gasificationmentioning

confidence: 99%

A review on plasma gasification for solid waste disposal

Şanlisoy

Çarpınlıoǧlu

2017

International Journal of Hydrogen Energy

141

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“…In this context, a high-temperature steam torch in place of a high-pressure reforming device may be useful for hydrogen production from hydrocarbon fuels [4], [5]. The steam torch plasma powered by microwaves provides abundant oxidizing radicals, including oxygen atoms and hydroxyls [6], which may very effectively gasify or reform hydrocarbon fuels. We have recently reported the production of syngases from the gasification of low-grade coal in 2.45-GHz-steam plasma torch [5].…”

Section: High-power Pure Steam Plasma Torch and Its Temperature Measumentioning

confidence: 99%

High-Power Pure Steam Plasma Torch and Its Temperature Measurements

Hong

Chun

Cho

et al. 2015

IEEE Trans. Plasma Sci.

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We report the generation of a high-power pure steam torch plasma operated by a 915-MHz microwave and its temperature measurements. Steam from a steam generator enters the discharge tube as a swirl gas at a temperature of ∼140°C. This steam becomes a plasma forming gas and produces a stable steam torch plasma. The torch volume is almost linearly proportional to the microwave power. The temperature of the torch flame was measured with an optical spectroscopy, analyzing the optical emissions of hydroxyl molecules ∼309 nm. The plasma torch showed two distinctive regions: 1) a bright, whitish region of a high-temperature zone and 2) a reddish, dimmer region of a relatively low-temperature zone. The maximum temperature in a microwave-driven region was measured to be ∼6720 K. We also investigated the plasma temperatures at the axial distances of plasma torch column.Index Terms-915 MHz, gas temperature, microwave plasma, steam plasma.

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“…Coal may also be liquified or gasified into cleaner fuel by the use of its co‐pyrolysis with waste plastics, tyres, sewage sludge and biomass . These pyrolytic reactions may either be carried out by the use of conventional heating or microwave heating .…”

Section: Introductionmentioning

confidence: 99%

Production of fuel by co-pyrolysis of Makarwal coal and waste polypropylene through a hybrid heating system of convection and microwaves

Hussain

Gulab

et al. 2016

Int. J. Energy Res.

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Summary The bituminous coal of the Makarwal range of Pakistan and waste polypropylene were converted into gaseous and liquid fuel using a hybrid heating process based on microwave metal interactions. The mixture of coal and polypropylene was heated by the volumetric heating generated by absorption of the microwaves and the conventional heating produced by the sparking of copper under microwave power in a domestic microwave oven. The heat generation capacity and range of sparking of copper were increased by the use of tightly coiled copper antenna. The heat generation efficiency of copper antenna was found to vary with variation in the shape of the copper antenna. Four types of antenna were used in the pyrolysis process, i.e. the antenna made of tightly coiled copper, copper mesh antenna, copper strips antenna and copper cylinder antenna. It was observed that copper coil and copper mesh antenna were more efficient and responsible for higher percent conversions while the multi‐strip antenna was next and the least percent conversion was observed for single strip cylinder of copper. The amount of products and the relative concentrations of the oil, wax and gases were observed to vary with variations in the relative amount of coal and polymers. Both the gaseous product and aqueous fraction were analysed for sulphides using lead acetate reagent. The gases were also analysed for the presence of alkynes and alkenes using aqueous solutions of copper‐I chloride and potassium permanganate respectively. The oily product which was composed of oil and wax was analysed by GC‐FID and GC‐MS analyses. Copyright © 2016 John Wiley & Sons, Ltd.

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Production of hydrogen-rich synthetic gas from low-grade coals by microwave steam-plasmas

Cited by 37 publications

References 15 publications

A review on plasma gasification for solid waste disposal

A review on plasma gasification for solid waste disposal

High-Power Pure Steam Plasma Torch and Its Temperature Measurements

Production of fuel by co-pyrolysis of Makarwal coal and waste polypropylene through a hybrid heating system of convection and microwaves

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