AN APPARATUS FOR PRODUCING ETHYLENE AND A PRODUCING METHOD THEREOF

摘要

An apparatus for producing ethylene includes: a reactor; a first separation column, connected to the reactor; a second separation column, the upper part of the second separation column being connected to the bottom of the first separation column, and the top of the second separation column being connected to the lower part of the first separation column; a first condenser, an inlet of the first condenser being connected to the top of the first separation column, and an outlet of the first condenser being connected to the upper part of the first separation column; and a third separation column, used for receiving a second part of a first condensate from the condenser and separating the received part. A method for producing ethylene using the aforementioned apparatus is also described.

主权项

1. An apparatus for producing ethylene, comprising:
a reactor for dehydrating ethanol and obtaining an ethylene stream including ethane, ethanol, ethyl ether and by-products containing three or more carbon atoms; a first separation column, connected to said reactor, for separating said ethylene stream including ethane, ethanol, ethyl ether and by-products containing three or more carbon atoms from said reactor to obtain a first light components containing ethylene at the top of said first separation column and a first heavy components containing ethylene at the bottom of said first separation column; a second separation column, the upper part of said second separation column being connected to the bottom of said first separation column, the top of said second separation column being connected to a lower part of said first separation column, said second separation column receiving and separating the first heavy components containing ethylene from the bottom of said first separation column to obtain a second light components containing ethylene at the top of said second separation column and a second heavy components at the bottom of said second separation column, wherein the second light components are returned to the lower part of said first separation column and the second heavy components are exhausted; a first condenser, an inlet of said first condenser being connected to the top of said first separation column, and an outlet of said first condenser being connected to an upper part of said first separation column, said first condenser condensing the first light components containing ethylene from the top of said first separation column to obtain a first condensate, wherein a first part of said first condensate is returned to the upper part of said first separation column; and a third separation column, for receiving and separating a second part of said first condensate from said first condenser to obtain a liquid ethylene at the bottom of said third separation column and a third light components at the top of said third separation column.