Effects of operating pressure on coal gasification

Sha, Xingzhong; Chen, Yi-Gong; Cao, Junxiang; Yang, Yongtao; Ren, Deqing

doi:10.1016/0016-2361(90)90157-l

Cited by 45 publications

(50 citation statements)

References 5 publications

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“…Results of Sha et al (1990) are in good agreement with the results of Canel et al (2005) and Yu et al (2007) with respect to increase in yield of CH 4 as pressure increases but Canel et al (2005) have reported that there is a decreases in methane yield between 5 and 10 MPa. Results of Sha et al (1990) for the increase in yield in C 2 H 6 with pressure are similar with Canel et al (2005).…”

Section: -180supporting

confidence: 81%

“…It is also reported that with the increase in pyrolysis pressure tendency of char to become sponge is increased due to opening of large void areas and accessible porosity (Roberts et al 2003). Sha et al (1990) reported that the char reactivity is decreased when it is produced by high pressure pyrolysis. Sha et al (1990) investigated the effect of operating pressure on coal gasification.…”

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

“…2.6 Effect of pressure on yield products during coal gasification Sha et al (1990), Roberts et al (2003), Canel et al (2005) and Yu et al (2007) have investigated the effect of pressure on yield products during pyrolysis and gasification. Sha et al (1990) and Roberts et al (2003) have reported that the pyrolysis pressure of coal affects the morphology of the produced char.…”

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

“…Sha et al (1990) and Roberts et al (2003) have reported that the pyrolysis pressure of coal affects the morphology of the produced char. It is also reported that with the increase in pyrolysis pressure tendency of char to become sponge is increased due to opening of large void areas and accessible porosity (Roberts et al 2003).…”

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

“…Sha et al (1990) reported that the char reactivity is decreased when it is produced by high pressure pyrolysis. Sha et al (1990) investigated the effect of operating pressure on coal gasification. They have reported that there is increase in yield of CH 4 and C 2 H 6 irrespective of pyrolysis medium (H 2 or N 2 ) with increase in operating pressure but as compared to N 2 pyrolysis …”

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

See 4 more Smart Citations

Effect of operating parameters on coal gasification

Mishra

Gautam

Sharma

2018

Int J Coal Sci Technol

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Coal combustion and gasification are the processes to utilize coal for production of electricity and many other applications. Global energy demand is increasing day by day. Coal is an abundant source of energy but not a reliable source as it results into high CO 2 emissions. Energy industries are expected to decrease the CO 2 emission to prevent global warming. Coal gasification is a process that reduces the CO 2 emission and emerges as a clean coal technology. Coal gasification process is regulated by several operating parameters. A Number of investigations have been carried out in this direction. A critical review of the work done by several researchers in the field of coal gasification has been compiled in this paper. The effect of several operating parameters such as coal rank, temperature, pressure, porosity, reaction time and catalyst on gasification has been presented here.

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Section: -180supporting

confidence: 81%

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

Section: Effect Of Temperature On Coal Gasificationmentioning

confidence: 99%

See 3 more Smart Citations

Effect of operating parameters on coal gasification

Mishra

Gautam

Sharma

2018

Int J Coal Sci Technol

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Catalyzed gasification of active carbon by oxygen: influence of catalyst type, temperature, oxygen partial pressure and particle size

Martín

González

Sabio

et al. 2000

J. Chem. Technol. Biotechnol.

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A thermogravimetric study of the oxygen gasi®cation of a commercial active carbon using Co, Ni and Cu as catalysts has been carried out. This follows a previous study of the in¯uence of the particle size, gas volumetric¯ow rate, initial sample weight temperature and oxygen partial pressure an non-catalytic gasi®cation. The results show that for T`500°C; P 02`1 atm; D p`0 .4 mm, Q v b 50 cm 3 min À1 and M o`7 5 mg the gasi®cation of the active carbon with oxygen is controlled by the chemical reaction. The presence of a catalyst increases in all cases the reaction rate, both temperature and catalyst concentration showing a very positive in¯uence. The activity of the different catalysts follows the order: Co b Cu b Ni. A kinetic study applied to both types of gasi®cation has allowed the activation energy and the reaction order with respect to oxygen and the catalyst to be determined. In all cases both the activation energy and the Arrhenius pre-exponential factor are lower in the catalytic gasi®cation. This brings about the existence of an isokinetic point for the catalytic and the non-catalytic processes, which were also determined.

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Semi‐industrial tests on enhanced underground coal gasification at Zhong‐Liang‐Shan coal mine

Wang

Feng

et al. 2009

Asia-Pacific J Chem Eng

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A new process of enhanced underground coal gasification (EUCG) has been demonstrated recently in successful semi-industrial tests at Zhong-Liang-Shan (ZLS) coal mine in China. The EUCG is featured using manbuilt pinnate channels and controlled moving injection points along coal-bed channel to produce syngas through underground coal gasification (UCG). To optimize the EUCG process, this field trial was performed with various operational manoeuvres, such as implementing controlled moving injection points, O 2 -enriched operation and variation of operational pressure. The results showed that these operational techniques of the EUCG can ensure the gas flow comparatively controllable and hence improve UCG performance significantly, providing both a higher efficiency of heat and a higher quality of the production syngas. 

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Effects of operating pressure on coal gasification

Cited by 45 publications

References 5 publications

Effect of operating parameters on coal gasification

Effect of operating parameters on coal gasification

Catalyzed gasification of active carbon by oxygen: influence of catalyst type, temperature, oxygen partial pressure and particle size

Semi‐industrial tests on enhanced underground coal gasification at Zhong‐Liang‐Shan coal mine

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