Parametric study of n-butane oxidation in a circulating fluidized bed reactor

Hutchenson, Keith W.; Marca, Concetta La; Patience, Gregory S.; Laviolette, Jean‐Philippe; Bockrath, Richard E.

doi:10.1016/j.apcata.2010.01.006

Cited by 17 publications

(25 citation statements)

References 18 publications

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“…Apart from conventional applications in petrochemical processes, such as fluidized catalytic cracking (FCC), the Fischer-Tropsch synthesis, and butane oxidation to maleic anhydride (Contractor, 1999;Hutchenson et al, 2010;Lappas et al, 2009;van Vliet et al, 2009), HFCFB is also of significant interest in the field of clean coal utilization, namely coal combustion and gasification and chemical-looping combustion (CLC) (Anthony, 1995;Guan et al, 2010;Hossain and Lasa, 2008;Kuchonthara et al, 2005;Smith et al, 2000;Wang et al, 2011). Furthermore, in these novel applications, HFCFB is always required to be operated at high pressure, contributing to the uniform mixing of solid=gas, high quality fluidization, high chemical reaction rate, etc.…”

Section: Introductionmentioning

confidence: 99%

Gas-Solid Flow Behavior in a Pressurized High-Flux Circulating Fluidized Bed Riser

Yin

Jin

Zhong

et al. 2013

Chemical Engineering Communications

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Gas-solid flow behavior was investigated in a high-flux circulating fluidized bed (HFCFB), whose riser is 0.068 m ID and 5.2 m high. Experiments were carried out at different pressures (0.1-0.5 MPa), solids mass fluxes (122-1015 kg=m 2 Á s), and standard state superficial gas velocities (6-40 m=s). Geldart group B particles 137 mm in diameter and 2490 kg=m 3 in density were used as bed materials. Information on pressure drop, apparent solids holdup, average slip velocity, and solid-toair mass flow ratio were systematically tested at elevated pressures. The results showed that increase of the operating pressure led to higher total riser pressure drop and solids holdup, lower slip velocity, more homogeneous pressure drop, and longitudinal solids holdup distribution. As a result, a high-density condition with Geldart group B particles, i.e., solids holdup in the riser over 10%, could be successfully formed in the HFCFB at elevated pressure. Similar to the trend at atmosphere, the dimensionless slip velocity at pressurized condition increased with increasing solids holdup for any given superficial gas velocity, and the total riser pressure drop increased approximately linearly with solids-to-air mass flow ratio at the given operating pressure.

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Section: Introductionmentioning

confidence: 99%

Gas-Solid Flow Behavior in a Pressurized High-Flux Circulating Fluidized Bed Riser

Yin

Jin

Zhong

et al. 2013

Chemical Engineering Communications

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“…A high-flux circulating fluidized bed (HFCFB) which operates at high solids mass flux (generally higher than 200 kg m -2 s -1 ) has been widely applied in the petroleum industry, including fluid catalytic cracking of petroleum, Fischer-Tropsch synthesis, oxidation of butane [1][2][3][4], etc. in the past two decades.…”

Section: Introductionmentioning

confidence: 99%

Solids Holdup of High Flux Circulating Fluidized Bed at Elevated Pressure

Yin¹,

Jin²,

Zhong³

et al. 2012

Chem Eng & Technol

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Experimental studies on the solids holdup of a high-flux circulating fluidized bed (HFCFB) at an operating pressure up to 0.5 MPa were carried out. The effects of operating pressure, solids mass flux and superficial gas velocity on the solids holdup distribution were systematically tested. It was found that the solids holdup at elevated pressure increases with increasing solids mass flux but decreases with increasing superficial gas velocity, which is similar to the trends at atmospheric condition. As a result, the condition of a high-density circulating fluidized bed (HDCFB), i.e., solids holdup in everywhere of the riser is larger than 10 %) is easier to be achieved at elevated pressure than in a HDCFB operated at atmospheric pressure. In the current work, the condition of a full HDCFB with Geldart group B particles has been achieved successfully at 0.5 MPa.

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“…Circulating fluidized bed configuration for the commercial facility [2] The (VO) 2 P 2 O 7 (100) structure. The purple and light pink circles refer to V and O atoms,respectively, while P centers are white.…”

Section: 1mentioning

confidence: 99%