Distillation Tower

Distillation Tower

Price:
Please contact
Posted by:
Shandong henghe machinery manufacturing co., Ltd.
FacebookTwitterPinterestLinkedInGoogle+

Description

Fractional distillation is the most common form of separation technology used in petroleum refineries, petrochemical



and chemical plants, natural gas processing and cryogenic air separation plants.In most cases, the distillation is



operated at a continuous steady state. New feed is always being added to the distillation column and products are



always being removed. Unless the process is disturbed due to changes in feed, heat, ambient temperature, or



condensing, the amount of feed being added and the amount of product being removed are normally equal. This is



known as continuous, steady-state fractional distillation.



Industrial distillation is typically performed in large, vertical cylindrical columns known as "distillation or fractionation



towers" or "distillation columns" with diameters ranging from about 65 centimeters to 6 meters and heights ranging



from about 6 meters to 60 meters or more. The distillation towers have liquid outlets at intervals up the column which



allow for the withdrawal of different fractions or products having different boiling points or boiling ranges. By increasing



the temperature of the product inside the columns, the different hydrocarbons are separated. The "lightest" products



(those with the lowest boiling point) exit from the top of the columns and the "heaviest" products (those with the highest



boiling point) exit from the bottom of the column.



For example, fractional distillation is used in oil refineries to separate crude oil into useful substances (or fractions)



having different hydrocarbons of different boiling points. The crude oil fractions with higher boiling points:







have more carbon atoms
have higher molecular weights
are more branched chain alkanes
are darker in color
are more viscous
are more difficult to ignite and to burn


Large-scale industrial towers use reflux to achieve a more complete separation of products. Reflux refers to the


portion of the condensed overhead liquid product from a distillation or fractionation tower that is returned to the


upper part of the tower.Inside the tower, the reflux liquid flowing downwards provides the cooling needed to


condense the vapors flowing upwards, thereby increasing the effectiveness of the distillation tower. The more


reflux is provided for a given number of theoretical plates, the better the tower's separation of lower boiling materials


from higher boiling materials. Alternatively, the more reflux provided for a given desired separation, the fewer theoretical


platesare required.


Fractional distillation is also used in air separation, producing liquid oxygen, liquid nitrogen, and highly concentrated



argon. Distillation of chlorosilanes also enable the production of high-purity silicon for use as a semiconductor.

Additional info

Ad ID: 542548
Posted:
Report: Report ad

Contact supplier

People:
Tony Zhang
Address:
Shandong henghe machinery manufacturing co., Ltd.
Liuquan road
Zibo city, shandong China, 2500023
China
Phone:
+86-533-2303870