2003
DOI: 10.2202/1542-6580.1107
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Pressure Effects on Gas-Solid Fluidized Bed Behavior

Abstract: The purpose of this paper is to review the state of our knowledge of the effects of operating pressure on the hydrodynamic behavior of fluidized beds. With the development of coal combustion and gasification fluidized bed processes in the early 1970s, many academic and industrial researchers have studied the effect of pressure on fluidized bed behaviour. This review covers experimental and theoretical studies of effects of elevated operating pressure on fluidization, published in the literature before August, … Show more

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Cited by 12 publications
(11 citation statements)
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“…Figure 2 shows the pressure drop during decreasing velocities at different pressures. This result was expected, as increasing system pressure causes U mf to decrease for particles sizes greater than 100 μm (Olowson & Almstedt, 1990;Sidorenko & Rodhes, 2003). The pressure drop for the fluidized bed is very close at different operating pressures.…”
Section: Pressure Effect On U Mfsupporting
confidence: 52%
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“…Figure 2 shows the pressure drop during decreasing velocities at different pressures. This result was expected, as increasing system pressure causes U mf to decrease for particles sizes greater than 100 μm (Olowson & Almstedt, 1990;Sidorenko & Rodhes, 2003). The pressure drop for the fluidized bed is very close at different operating pressures.…”
Section: Pressure Effect On U Mfsupporting
confidence: 52%
“…Pressure effect on hydrodynamics is investigated through analyses of pressure fluctuation time series (standard deviation, power spectral) and bubble properties from X-ray images. Fluidization becomes smoother while increasing pressure due to the smaller bubbles at higher pressure and also the resulting bed is more homogeneous caused by the smaller differences between the minimum fluidization velocity of the smallest and largest particles (Sidorenko and Rodhes, 2003;Yang, 1998;Sciazko and Bandrowski, 1995). Superficial gas velocity and pressure effect on time series of pressure fluctuations measured at position 1 (2 and 17 cm above distributor) is shown in Figures 4 and 5.…”
Section: Pressure Effect On U Mfmentioning
confidence: 99%
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“…The process and instrumentation diagram of the pressurized fluidized bed used in this study of the effects of pressure on fluidization is given elsewhere . The pressure vessel, capable of operating at pressures up to 2600 kPa, was 2.38 m high and was equipped with five glass observation ports.…”
Section: Experimental Methodsmentioning
confidence: 99%
“…The dense phase is an important parameter in determining the fluidised bed performance because it is widely believed that it has a direct influence on the chemical reactions taking place in the fluidised bed. 29 The dense phase affects the degree of gas–solid contact and heat and mass transfer.…”
Section: Introductionmentioning
confidence: 99%