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All Categories > ASTM Testing Apparatus > High Vacuum (HIVAC) Still, ASTM D5236  
 

High Vacuum (HIVAC) Still, ASTM D5236


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500270

Distillation System, with Glass Flasks, ASTM D5236

(16)
Every fractionators reaches a limit above which it cannot operate. This limit is imposed by the pressure gradient in the packed column (10-15 mm Hg) which cause the vapors at the bottom of the tower to be hotter than those at the top. This difference, coupled with the temperature differential between the vapors and the liquid in the kettle is often 66°C. In the case of a crude oil distillation, the liquid is brought to the point of thermal cracking in a short period of time. Operating at 329°C for more than 30 minutes, significant cracking will take place altering the composition of the product taken off. This will correspond to an overhead cut off point of 343°C to 427°C AET depending on the gravity of the ...
500270

Distillation System, with Stainless Steel Flasks, ASTM D5236

(16)
Every fractionators reaches a limit above which it cannot operate. This limit is imposed by the pressure gradient in the packed column (10-15 mm Hg) which cause the vapors at the bottom of the tower to be hotter than those at the top. This difference, coupled with the temperature differential between the vapors and the liquid in the kettle is often 66°C. In the case of a crude oil distillation, the liquid is brought to the point of thermal cracking in a short period of time. Operating at 329°C for more than 30 minutes, significant cracking will take place altering the composition of the product taken off. This will correspond to an overhead cut off point of 343°C to 427°C AET depending on the gravity of the ...
500332

Components and Accessories for the D5236 HIVAC Still


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