US 12,535,390 B2 · Processes and systems for analyzing a sample separated from a steam cracker effluent

Abstract

Processes and systems for analyzing a composition of a C3− component separated from a steam cracker effluent. The process can include steam cracking a hydrocarbon feed to produce a steam cracker effluent. The effluent can be cooled to produce a cooled effluent and a sample can be separated therefrom. Heat can be indirectly exchanged from the sample to a heat transfer medium to produce a gas phase product that can include C3− compounds and a first liquid phase product that can include C4+ compounds. The gas phase product can flow through a flow restricting line and into a transport line. The flow restricting line can have an inner cross-sectional area that is <50% of an inner cross-sectional area of the transport line. The gas phase product can flow through the transport line and into an analyzer. An at least partial composition of the gas phase product can be determined.

Claims22

Dependent claims

A process for analyzing a composition of a C3− component separated from a steam cracker effluent, comprising:

steam cracking a hydrocarbon feed within one or more radiant coils of a steam cracker to produce a steam cracker effluent having a coil outlet temperature;
cooling the steam cracker effluent to produce a cooled steam cracker effluent;
separating a sample from the cooled steam cracker effluent;
indirectly exchanging heat from the sample to a heat transfer medium to produce a first gas phase product comprising C3− compounds and a first liquid phase product comprising C4+ compounds;
flowing the first gas phase product through a flow restricting line and into a transport line, wherein the flow restricting line has an inner cross-sectional area that is <50% of an inner cross-sectional area of the transport line;
flowing the first gas phase product through the transport line and into an analyzer;
and
determining an at least partial composition of the first gas phase product.

5 more elements

A system for analyzing a composition of a C3− component separated from a steam cracker effluent, comprising:

a sample line having an inlet configured to receive a sample of a steam cracker effluent from a steam cracker effluent line;
an indirect heat exchanger having an inlet configured to receive the sample from an outlet of the sample line and to cool the sample by indirect heat exchange with a heat transfer medium to produce a first gas phase product comprising C3− compounds and a first liquid phase product comprising C4+ compounds;
a flow restricting line having an inlet configured to receive the first gas phase product from an outlet of the indirect heat exchanger;
a transport line having an inlet configured to receive the first gas phase product from an outlet of the flow restricting line, wherein the flow restricting line has an inner cross-sectional area that is <50% of an inner cross-sectional area of the transport line;
and
an analyzer having an inlet configured to receive the first gas phase product from an outlet of the transport line and to determine an at least a partial composition of the first gas phase product.

3 more elements

Dependencies are inferred from the claim text.

Processes and systems for analyzing a sample separated from a steam cracker effluent

Life of this patent

Processes and systems for analyzing a sample separated from a steam cracker effluent

Life of this patent

Abstract

Claims22