Comparaison entre la dissolution et la croissance de Cristaux d'Acide citrique monohydrate en lit Fluidisé

Solid-liquid circulating fluidized bed: a way forward

“…Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power. Shen et al (1985) have reported the exponent value as 0.27, which is quite similar to the results obtained by Laguerie and Angelino (1975), who have found the exponent of superficial liquid velocity equal to 0.217. Kikuchi et al (1988) have shown that MTC is proportional to superficial velocity raised to 0.196 power, while Seguin et al (1996) have found the value equal to 0.33.…”

“…The effect of bed voidage on mass transfer factor has been observed and considered by many previous investigators (Sengupta and Thodos 1962, Wilson and Geankoplis 1966, Couderc et al 1972, Damronglerd et al 1975, Laguerie and Angelino 1975, Dwivedi and Upadhyay 1977, Rahman and Streat 1981a, Shen et al 1985, Wildhagen et al 1985, Seguin et al 1996. Sengupta and Thodos (1962) and Wilson and Geankoplis (1966) have shown that mass transfer factor is inversely proportional to bed voidage.…”

“…Damronglerd et al (1975) have shown that mass transfer factor is proportional to the bed voidage raised to power −1.20 and −2.40 when bed voidage is less than 0.815 and greater than 0.815, respectively. Laguerie and Angelino (1975) have reported the bed voidage exponent value equal to −1.8. Shen et al (1985) have shown that mass transfer factor is proportional to bed voidage raised to power −1.42.…”

“…Few reports are also available in the literature wherein MTC is directly related to superficial liquid velocity (Evans and Gerald 1953, Laguerie and Angelino 1975, Shen et al 1985, Kikuchi et al 1988, Seguin et al 1996, Boskovic-Vragolovic et al 2005. Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power.…”

Solid-liquid circulating fluidized bed: a way forward

“…Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power. Shen et al (1985) have reported the exponent value as 0.27, which is quite similar to the results obtained by Laguerie and Angelino (1975), who have found the exponent of superficial liquid velocity equal to 0.217. Kikuchi et al (1988) have shown that MTC is proportional to superficial velocity raised to 0.196 power, while Seguin et al (1996) have found the value equal to 0.33.…”

“…The effect of bed voidage on mass transfer factor has been observed and considered by many previous investigators (Sengupta and Thodos 1962, Wilson and Geankoplis 1966, Couderc et al 1972, Damronglerd et al 1975, Laguerie and Angelino 1975, Dwivedi and Upadhyay 1977, Rahman and Streat 1981a, Shen et al 1985, Wildhagen et al 1985, Seguin et al 1996. Sengupta and Thodos (1962) and Wilson and Geankoplis (1966) have shown that mass transfer factor is inversely proportional to bed voidage.…”

“…Damronglerd et al (1975) have shown that mass transfer factor is proportional to the bed voidage raised to power −1.20 and −2.40 when bed voidage is less than 0.815 and greater than 0.815, respectively. Laguerie and Angelino (1975) have reported the bed voidage exponent value equal to −1.8. Shen et al (1985) have shown that mass transfer factor is proportional to bed voidage raised to power −1.42.…”

“…Few reports are also available in the literature wherein MTC is directly related to superficial liquid velocity (Evans and Gerald 1953, Laguerie and Angelino 1975, Shen et al 1985, Kikuchi et al 1988, Seguin et al 1996, Boskovic-Vragolovic et al 2005. Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power.…”

Properties of Citric Acid and Its Solutions

“…Considering the importance of industrial aspects of crystallization from aqueous solutions, a number of studies of supersaturated or nearly saturated citric acid solutions were performed. It was demonstrated that the structure of these solutions and impurities have a great influence on nucleation kinetics and crystal formation and growth of citric acid crystals [19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Solid-liquid circulating fluidized bed: a way forward

“…Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power. Shen et al (1985) have reported the exponent value as 0.27, which is quite similar to the results obtained by Laguerie and Angelino (1975), who have found the exponent of superficial liquid velocity equal to 0.217. Kikuchi et al (1988) have shown that MTC is proportional to superficial velocity raised to 0.196 power, while Seguin et al (1996) have found the value equal to 0.33.…”

“…The effect of bed voidage on mass transfer factor has been observed and considered by many previous investigators (Sengupta and Thodos 1962, Wilson and Geankoplis 1966, Couderc et al 1972, Damronglerd et al 1975, Laguerie and Angelino 1975, Dwivedi and Upadhyay 1977, Rahman and Streat 1981a, Shen et al 1985, Wildhagen et al 1985, Seguin et al 1996. Sengupta and Thodos (1962) and Wilson and Geankoplis (1966) have shown that mass transfer factor is inversely proportional to bed voidage.…”

“…Damronglerd et al (1975) have shown that mass transfer factor is proportional to the bed voidage raised to power −1.20 and −2.40 when bed voidage is less than 0.815 and greater than 0.815, respectively. Laguerie and Angelino (1975) have reported the bed voidage exponent value equal to −1.8. Shen et al (1985) have shown that mass transfer factor is proportional to bed voidage raised to power −1.42.…”

“…Few reports are also available in the literature wherein MTC is directly related to superficial liquid velocity (Evans and Gerald 1953, Laguerie and Angelino 1975, Shen et al 1985, Kikuchi et al 1988, Seguin et al 1996, Boskovic-Vragolovic et al 2005. Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power.…”

Properties of Citric Acid and Its Solutions

“…Considering the importance of industrial aspects of crystallization from aqueous solutions, a number of studies of supersaturated or nearly saturated citric acid solutions were performed. It was demonstrated that the structure of these solutions and impurities have a great influence on nucleation kinetics and crystal formation and growth of citric acid crystals [19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Solid-liquid circulating fluidized bed: a way forward

“…Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power. Shen et al (1985) have reported the exponent value as 0.27, which is quite similar to the results obtained by Laguerie and Angelino (1975), who have found the exponent of superficial liquid velocity equal to 0.217. Kikuchi et al (1988) have shown that MTC is proportional to superficial velocity raised to 0.196 power, while Seguin et al (1996) have found the value equal to 0.33.…”

“…The effect of bed voidage on mass transfer factor has been observed and considered by many previous investigators (Sengupta and Thodos 1962, Wilson and Geankoplis 1966, Couderc et al 1972, Damronglerd et al 1975, Laguerie and Angelino 1975, Dwivedi and Upadhyay 1977, Rahman and Streat 1981a, Shen et al 1985, Wildhagen et al 1985, Seguin et al 1996. Sengupta and Thodos (1962) and Wilson and Geankoplis (1966) have shown that mass transfer factor is inversely proportional to bed voidage.…”

“…Damronglerd et al (1975) have shown that mass transfer factor is proportional to the bed voidage raised to power −1.20 and −2.40 when bed voidage is less than 0.815 and greater than 0.815, respectively. Laguerie and Angelino (1975) have reported the bed voidage exponent value equal to −1.8. Shen et al (1985) have shown that mass transfer factor is proportional to bed voidage raised to power −1.42.…”

“…Few reports are also available in the literature wherein MTC is directly related to superficial liquid velocity (Evans and Gerald 1953, Laguerie and Angelino 1975, Shen et al 1985, Kikuchi et al 1988, Seguin et al 1996, Boskovic-Vragolovic et al 2005. Evans and Gerald (1953) have reported that MTC increases with an increase in superficial mass velocity raised to 0.33 power.…”

Properties of Citric Acid and Its Solutions

“…Considering the importance of industrial aspects of crystallization from aqueous solutions, a number of studies of supersaturated or nearly saturated citric acid solutions were performed. It was demonstrated that the structure of these solutions and impurities have a great influence on nucleation kinetics and crystal formation and growth of citric acid crystals [19][20][21][22][23][24][25][26][27][28][29][30][31][32].…”