US 12,716,030 B2 · Method and apparatus for treating a feed before a quench column

Abstract

A method and a process arrangement for treating a feed before a quench column in an integrated process, in which the integrated process comprises at least one gasifier for forming a gasifier flow, at least one cracking furnace for forming a cracker flow, at least one quench column for treating the feed comprising the gasifier flow and cracker flow and at least one transfer line to supply the feed to the quench column. The gasifier flow is cooled at least partly for killing chemical reactions after a gasification, the cracker flow is cooled at least partly after the cracking furnace, the gasifier flow is combined to the cracker flow before a transfer line valve of the transfer line to form the feed to the quench column, and temperature of the feed is controlled to a predetermined temperature of the transfer line before the quench column.

Claims14

Dependent claims

A method for forming a feed supplied to a quench column via a main transfer line, wherein the main transfer line is connected to at least one other transfer line via a transfer line valve that is arranged between the at least one other transfer line and the main transfer line, the method comprising:

gasifying recycled plastics in a gasifier to form a gasifier flow,
cooling the gasifier flow to stop chemical reactions after the gasification,
cracking a cracker feed in a cracking furnace of a cracking unit to form a cracker flow, wherein the cracking unit is isolated from the main transfer line by the transfer line valve,
cooling the cracker flow after the cracking furnace,
combining the gasifier flow to the cracker flow in the at least one other transfer line, wherein the combining forms the feed to the quench column,
controlling temperature of the feed to a predetermined temperature before the quench column,
supplying the feed to the quench column via the main transfer line while the transfer line valve is opened, and
quenching the feed in the quench column and discharging a gas stream from the quench column.

5 more elements

A process arrangement for forming a feed supplied to a quench column via a main transfer line, wherein the main transfer line is connected to at least one other transfer line via a transfer line valve that is arranged between the at least one other transfer line and the main transfer line, the process arrangement comprising:

a cracking unit including a cracking furnace and a gasifier that is integrated into the cracking unit, wherein the gasifier is configured to gasify recycled plastics by a gasification to form a gasifier flow and the cracking unit is configured to form a cracker flow,
a cooling system comprising at least one means for cooling the gasifier flow for to stop chemical reactions after the gasification and at least one cooling device for cooling the cracker flow after the cracking furnace, wherein the cooling system is for controlling temperature of the feed to a predetermined temperature of the main transfer line before a quench column,
at least one connection point in the at least one other transfer line, wherein the gasifier flow is combined to the cracker flow at the at least one connection point, and wherein the at least one connection point is before the transfer line valve, and
a quench column connected to the main transfer line,
wherein the cracking unit is isolated from the main transfer line by the transfer line valve,
and
wherein the quench column receives the feed via the main transfer line while the transfer line valve is opened and discharges a gas stream.

4 more elements

Dependencies are inferred from the claim text.

Method and apparatus for treating a feed before a quench column

Life of this patent

Method and apparatus for treating a feed before a quench column

Life of this patent

Abstract

Claims14