Regenerative reactor system

Patent metadata

Field	Value
Publication number	US-10570345-B2
Application number	US-201514878734-A
Country	US
Kind code	B2
Filing date	Oct 8, 2015
Priority date	Nov 8, 2011
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

The invention relates to a regenerative reactor system which includes a reverse flow regenerative reactor. The reverse flow regenerative reactor includes a housing enclosing an interior region, and process flow components configured to manage the flow of a pyrolysis stream through the interior region. The process flow components include reactor beds. The reverse flow regenerative reactor also includes a pyrolysis inlet conduit for managing flow of the pyrolysis stream to the reverse flow regenerative reactor, and further includes a liquid distribution device that is configured to disperse a liquid portion of the pyrolysis stream along an internal surface of the pyrolysis inlet conduit.

First claim

The invention claimed is:

1. A regenerative reactor system comprising:
a reverse flow regenerative thermal pyrolysis reactor comprising:
a housing enclosing an interior region;
one or more process flow components configured to manage the flow of a pyrolysis stream through the interior region, wherein the one or more process flow components comprise one or more reactor beds;
a pyrolysis inlet conduit having an internal surface and in fluid communication with the reverse flow regenerative reactor; and a liquid distribution device disposed along the flow path of the pyrolysis stream and in fluid communication with the pyrolysis inlet conduit, whereby the liquid distribution device is selected from an annular flow device, an atomizer, a nozzle, and combinations thereof, and is configured to disperse a liquid portion of the pyrolysis stream in the absence of oxygen as a tangential flow along the internal surface of the pyrolysis inlet conduit and configured to direct a vapor phase portion of the pyrolysis stream along a central flow path of the pyrolysis inlet conduit.

2. The regenerative reactor system of claim 1 , wherein the reverse flow regenerative reactor further comprises one or more structural members disposed within the internal region and near the pyrolysis inlet conduit to lessen fouling near the pyrolysis inlet conduit within the internal region.

3. The regenerative reactor system of claim 1 , further comprising a noncombustible non-volatile removal unit upstream of the pyrolysis inlet conduit and configured to remove at least a portion of non-combustible non-volatile components from the pyrolysis stream.

4. The regenerative reactor system of claim 3 , further comprising a heat exchanger disposed between the non-combustible non-volatile removal unit and the pyrolysis inlet conduit and configured to heat the pyrolysis stream via indirect heat exchange.

5. The regenerative reactor system of claim 4 , wherein the reverse flow regenerative reactor is a deferred combustion reactor, and wherein the regenerative reactor system further comprises one or more conduits configured to pass combustion products through the heat exchanger to heat the pyrolysis stream.

6. The regenerative reactor system of claim 4 , further comprising one or more conduits configured to pass reactor products through the heat exchanger to heat the pyrolysis stream.

7. The regenerative reactor system of claim 1 , further comprising a hydrogen inlet conduit configured to combine molecular hydrogen with the pyrolysis stream upstream of the reverse flow regenerative reactor.

8. The regenerative reactor system of claim 7 , further comprising:
a temperature measurement device configured to measure the temperature of the pyrolysis stream upstream of the reverse flow regenerative reactor;
a diluent control unit configured to adjust the flow rate of the molecular hydrogen diluent provided to the pyrolysis stream; and
a process control unit in communication with the temperature measurement device and the diluent control unit and having a set of instructions stored in memory and configured to:
(i) obtain data from a temperature measurement device;
(ii) calculate the amount of the molecular hydrogen diluent; and
(iii) provide an indication to the diluent control unit to adjust the flow rate of the molecular hydrogen diluent.

Assignees

• Exxonmobil Chemical Patents Inc

Inventors

• Keusenkothen Paul F
• Stell Richard C

Classifications

• B01J2219/2445

  Sizes · CPC title

• B01J2219/00164

  controlling the flow · CPC title

• B01J2219/2419

  for the reactants · CPC title

• B01J19/24

  Stationary reactors without moving elements inside (B01J19/08, B01J19/26 take precedence; with stationary particles B01J8/02) · CPC title

• C10G1/065

  in the presence of a solvent · CPC title