Experimental investigation of high temperature and high pressure coal gasification

Tremel, Alexander; Haselsteiner, T.; Kunze, Christian; Spliethoff, Hartmut

doi:10.1016/j.apenergy.2011.11.009

Cited by 88 publications

(44 citation statements)

References 21 publications

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“…6,7 Higher pyrolysis temperature resulted in a decrease in surface area and an equivalent or increased activation energy for the char-CO 2 and char-steam reactions, implying that increased pyrolysis temperature does not necessarily produce a more reactive char. A loss of reactivity with increasing pyrolysis temperature between 1200 and 16008C was also reported for Rhenish lignite 8 and attributed to a combination of increased mass transfer, thermal annealing and ash melting effects. It was concluded that Rhenish lignite is suitable for entrained flow gasification.…”

Section: Introductionmentioning

confidence: 82%

High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

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Bhattacharya

Bläsing³

et al. 2016

AIChE Journal

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The low rank coals from Victoria, Australia, and Rhineland, Germany are of interest for use in entrained flow gasification applications. Therefore, a high temperature, electrically heated, entrained flow apparatus has been designed to address the shortage of fundamental data. A Victorian brown coal and a Rhenish lignite were subjected to rapid, entrained flow pyrolysis between 1100 and 14008C to generate high surface area chars, which were subsequently gasified at the same temperatures under CO 2 in N 2 between 10 and 80 vol %. The Victorian coal was more reactive than the Rhenish coal, and peak char reactivity was observed at 12008C. Char conversion and syngas yield increased with increasing temperature and plateaued at high CO 2 concentration. Ammonia and tar species were negligible and HCN and H 2 S were present in parts per million (volume) concentrations in the cooled, filtered syngas.

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Section: Introductionmentioning

confidence: 82%

High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

Tanner

Bhattacharya

Bläsing³

et al. 2016

AIChE Journal

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“…47 Aer occulation, these peaks all observed in hematite + APAS and hematite + TPAS. Meanwhile, the characteristic peaks of both APAS and TPAS were observed at 2943 cm (-CH 3 …”

Section: Ftir Analysis Of the Ocsmentioning

confidence: 99%

“…[1][2][3] However, the industry waste water generated by these plants severely destroys and pollutes the natural water environment and further threatens human health, since this industry waste water is infamous for high turbidity caused by high levels of suspended solids (SS). [4][5][6] The task of separating suspended solids becomes more and more challenging and hard because these suspended solids are always negatively/positively charged and these colloidal particles suspend stably in the water.…”

Section: Introductionmentioning

confidence: 99%

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

et al. 2017

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ab Ultraviolet (UV)-initiated template polymerization (UTP) was used as a feasible strategy to prepare a novel anionic polyacrylamide (APAM) with a microblock structure. In the template copolymerization system, acrylamide (AM) and sodium allylsulfonate (SAS) were used as monomers, and poly Results showed that the novel anionic microblock structure was formed in the template copolymer.Besides, the results of the association constant (K M ) indicated that the copolymerization followed I Zipup (ZIP) template polymerization mechanism, which indicated the formation of the microblock structure again. Parameters such as pH and dosage that affected the flocculation performance, flocculation kinetics and the FTIR spectra of the generated flocs were investigated to further observe the effect of anionic microblocks on flocculation performance and understand the relationship between the flocs and flocculants. Flocculation experimental results demonstrated that the anionic microblocks in the template copolymer could enhance the charge neutralization and bridging ability, and therefore an excellent flocculation performance of treating high turbidity water was observed.

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“…The layout of the reactor is shown in Fig. 1 [26,27]. The BabiTER can be operated at atmospheric pressure and at a maximal temperature of 1600 C. The particle residence time for the investigation in this work is below 1 s, calculated from the average gas residence time, and considering the effects of particle free fall velocity, velocity profile and biomass particle properties.…”

Section: Entrained Flow Reactormentioning

confidence: 99%

Comparison of high temperature chars of wheat straw and rice husk with respect to chemistry, morphology and reactivity

Trubetskaya

Jensen

et al. 2016

Biomass and Bioenergy

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Si solid-state NMR Entrained flow reactor Oxygen reactivity Si bearing compounds a b s t r a c t Fast pyrolysis of wheat straw and rice husk was carried out in an entrained flow reactor at hightemperatures (1000e1500) C. The collected char was analyzed using X-ray diffractometry, N 2 -adsorption, scanning electron microscopy, particle size analysis with CAMSIZER XT, 29 Si and 13 C solid-state nuclear magnetic resonance spectroscopy and thermogravimetric analysis to investigate the effect of inorganic matter on the char morphology and oxygen reactivity. The silicon compounds were dispersed throughout the turbostratic structure of rice husk char in an amorphous phase with a low melting temperature (z730 C), which led to the formation of a glassy char shell, resulting in a preserved particle size and shape of chars. The high alkali content in the wheat straw resulted in higher char reactivity, whereas the lower silicon content caused variations in the char shape from cylindrical to near-spherical char particles. The reactivities of pinewood and rice husk chars were similar with respect to oxidation, indicating less influence of silicon oxides on the char reactivity.

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Experimental investigation of high temperature and high pressure coal gasification

Cited by 88 publications

References 21 publications

High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

Comparison of high temperature chars of wheat straw and rice husk with respect to chemistry, morphology and reactivity

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Experimental investigation of high temperature and high pressure coal gasification

Cited by 88 publications

References 21 publications

High‐temperature pyrolysis and CO2 gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

High‐temperature pyrolysis and CO2 gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

Fabricating an anionic polyacrylamide (APAM) with an anionic block structure for high turbidity water separation and purification

Comparison of high temperature chars of wheat straw and rice husk with respect to chemistry, morphology and reactivity

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High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor

High‐temperature pyrolysis and CO₂ gasification of Victorian brown coal and Rhenish lignite in an entrained flow reactor