See enough at a time: 22 kinds of evaporation, crystallization equipment structure and working principle diagram! _ Evaporator
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Original title See enough at a time 22 kinds of evaporation crystallization equipment structure and working principle diagram! Source Chemical 707 Forum 1 Central-circulation tubular evaporator The heating chamber of the central circulation tube evaporator is composed of a vertical heating tube bundle (boiling tube bundle) In the center of the tube bundle there is a tube with a larger diameter called the central circulation tube whose cross-sectional area is generally 40-100% of the total cross-sectional area of the heating tube bundle When the heating medium is introduced between cbd crystallization equipment the tubes for heating since the heated area of the liquid per unit volume in the heating tube is larger than that in the central circulating tube the relative density of the liquid in the heating tube is small resulting in a density difference between the liquid in the heating pipe and that in the central circulating tube which causes the solution to flow in a natural circulation of descending from the central circulation tube and then ascending from the heating pipe The circulation speed of the solution depends on the density difference produced by the solution and the length of the tube The greater the density difference the longer the tube and the greater the circulation speed of the solution However this type of evaporator is limited by the total height so the length of the heating tube is short generally 1 ~ 2 m the diameter is 25 ~ 75 mm and the length-diameter ratio is 20 ~ 40 Performance characteristics The central circulation tube evaporator has the advantages of compact structure convenient manufacture and reliable operation so it is widely used in industry and is known as the so-called "standard evaporator"
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