Back to results
US 12,630,773 B2Granted
Processes and apparatuses for hydrotreating a feed stream comprising a biorenewable feedstock with electric heaters
AssigneeUop LLC
InventorsNeeraj Jatashankar Tiwari, James T. Wexler, Syed Owais Ali, Prakhar Agrawal
Life of this patent
Estimating the term…
Abstract
Processes and apparatuses for hydrotreating a feed stream comprising a biorenewable feedstock. The process comprises hydrotreating the feed stream in the presence of hydrogen and a hydrotreating catalyst to provide a hydrotreated stream and isomerizing an isomerization feed stream in the presence of a hydrotreating catalyst to provide an isomerized stream. The isomerization feed stream includes at least a portion of the hydrotreated stream. Electric heaters are provided for one or both recycle vapor streams.
Claims20
A process for hydrotreating a feedstock, the process comprising:
- heating a feed stream comprising a biorenewable feedstock to provide a heated feed stream;
- hydrotreating the heated feed stream in a first reaction zone comprising a first reactor vessel having a hydrotreating catalyst and providing a hydrotreated stream;
- separating the hydrotreated stream into a hydrotreated liquid stream and a hydrotreated gas stream;
- heating an isomerization feed stream, wherein the isomerization feed stream comprises at least a portion of the hydrotreated liquid stream;
- isomerizing the isomerization feed stream in a second reaction zone comprising a second reactor vessel having an isomerization catalyst and providing an isomerized stream;
- and,
- separating the isomerized stream into an isomerized liquid stream and an isomerized gas stream;
- wherein either:
- both the hydrotreated gas stream and the isomerized gas stream have been separately heated in electric heaters to provide, respectively, a heated hydrotreated gas stream and a heated isomerized gas stream and the feed stream is heated by being combined with the heated hydrotreated gas stream and the isomerization feed stream is heated by being combined with the heated isomerized gas stream;
- or,
- only one of the hydrotreated gas stream and the isomerized gas stream has been heated in an electric heater to provide a heated gas stream which heats, by being combined with, one of the feed stream or the isomerization feed stream, and the other of the feed stream or the isomerization feed stream is heated in a fired heater.
8 more elements
A process for hydrotreating a feedstock, the process comprising:
- heating a feed stream comprising a biorenewable feedstock to provide a heated feed stream;
- passing the heated feed stream to a first reaction zone comprising a first reactor vessel having a hydrotreating catalyst and being operated under conditions to hydrotreat the heated feed stream and provide a hydrotreated stream;
- passing the hydrotreated stream to a first separation zone configured to separate the hydrotreated stream into a hydrotreated liquid stream and a hydrotreated gas stream;
- heating an isomerization feed stream to provide a heated isomerization feed stream, wherein the isomerization feed stream comprises at least a portion of the hydrotreated liquid stream;
- passing the heated isomerization feed stream to a second reaction zone comprising a second reactor vessel having an isomerization catalyst and being operated under conditions to isomerize the heated portion of the hydrotreated liquid stream and provide an isomerized stream;
- and,
- passing the isomerized stream to a second separation zone configured to separate the isomerized stream into an isomerized liquid stream and an isomerized gas stream;
- wherein the process further comprises:
- passing the hydrotreated gas stream to a first electric heater to provide a heated hydrotreated gas stream, wherein the feed stream is heated by being combined with the heated hydrotreated gas stream, and
- passing the isomerized gas stream to a second electric heater to provide a heated isomerized gas stream, wherein the isomerization feed stream is heated by being combined with the heated isomerized gas stream;
- or,
- passing the hydrotreated gas stream to a first electric heater to provide a heated hydrotreated gas stream, wherein the feed stream is heated by being combined with the heated hydrotreated gas stream, and wherein the isomerization feed stream is heated in a fired heater to provide the heated isomerization feed stream;
- or,
- passing the isomerized gas stream to a second electric heater to provide a heated isomerized gas stream, wherein the isomerization feed stream is heated by being combined with the heated isomerized gas stream, and wherein the feed stream is heated in a fired heater to provide the heated feed stream.
11 more elements
A process for hydrotreating a feedstock, the process comprising:
- hydrotreating a feed stream comprising a biorenewable feedstock in a first reaction zone comprising a first reactor vessel having a hydrotreating catalyst and providing a hydrotreated stream;
- separating the hydrotreated stream into a hydrotreated liquid stream and a hydrotreated gas stream;
- heating the hydrotreated gas stream in a first heating zone to provide a heated hydrotreated gas stream;
- combining the heated hydrotreated gas stream and the feed stream;
- isomerizing an isomerization feed stream in a second reaction zone comprising a second reactor vessel having an isomerization catalyst and providing an isomerized stream, the isomerization feed stream comprising at least a portion of the hydrotreated liquid stream;
- separating the isomerized stream into an isomerized liquid stream and an isomerized gas stream;
- heating the isomerized gas stream in a second heating zone to provide a heated isomerized gas stream;
- and,
- combining the heated isomerized gas stream and the hydrotreated liquid stream,
- wherein both the first and the second heating zones comprise an electric heater.
7 more elements
Dependencies are inferred from the claim text.