Method and system for performing gasification of carbonaceous feedstock

Patent metadata

Field	Value
Publication number	US-9376639-B2
Application number	US-201414210288-A
Country	US
Kind code	B2
Filing date	Mar 13, 2014
Priority date	Mar 15, 2013
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

The gasification of a carbonaceous material includes receiving a volume of feedstock, supplying thermal energy to the volume of feedstock to convert at least a portion of the volume of feedstock to at least one pyrolysis reaction product via at least one pyrolysis reaction, super-heating the at least one pyrolysis reaction product, providing a volume of super-heated steam, mixing the volume of super-heated steam with the super-heated at least one pyrolysis reaction product and converting at least a portion of at least one reformed product to at least one synthesis gas product via at least one water-gas-shift reaction.

First claim

The invention claimed is:

1. An apparatus comprising:
a pyrolysis reaction chamber for containing a volume of feedstock;
a first thermal energy transfer system in thermal communication with the pyrolysis reaction chamber and at least one heat source for converting at least a portion of the volume of feedstock to at least one pyrolysis reaction product;
a second thermal energy transfer system in thermal communication with an outlet of the pyrolysis reaction chamber and an internal heat source for super-heating the at least one pyrolysis reaction product;
a steam generator including an outlet arranged to mix super-heated steam with the super-heated at least one pyrolysis reaction product;
a steam reformer in fluidic communication with the outlet of the pyrolysis reaction chamber and the steam generator, the steam reformer configured to convert the super-heated at least one pyrolysis reaction product and the super-heated steam to at least one reformed product;
a water-gas-shift reactor in fluidic communication with an outlet of the steam reformer and configured to convert at least a portion of the at least one reformed product to at least one synthesis gas product via at least one water-gas-shift reaction;
a compression system in fluidic communication with an outlet of the water-gas-shift reactor and configured to compress the at least one synthesis gas product in at least one compression phase;
a methanol reactor in fluidic communication with an outlet of the compression system and configured to convert at least a portion of the compressed at least one synthesis gas product to a volume of methanol; and
a methanol-to-gasoline reactor in fluidic communication with an outlet of the methanol reactor and configured to convert at least a portion of the volume of methanol to a volume of gasoline.

2. The apparatus of claim 1 , wherein the feedstock includes:
a carbonaceous material.

3. The apparatus of claim 2 , wherein the feedstock includes:
at least one of coal, biomass, mixed-source biomaterial, plastic, refuse, and landfill waste.

4. The apparatus of claim 1 , wherein the at least one heat source includes:
at least one nuclear reactor.

5. The apparatus of claim 4 , wherein the at least one nuclear reactor includes:
at least one of a molten salt cooled nuclear reactor system, a liquid metal cooled reactor system, a gas cooled reactor system and a supercritical fluid cooled reactor system.

6. The apparatus of claim 1 , wherein the first thermal energy transfer system includes:
a direct heat exchange system.

7. The apparatus of claim 1 , wherein the first thermal energy transfer system includes:
an indirect heat exchange system.

8. The apparatus of claim 1 , wherein the first thermal energy transfer system includes:
a heat transfer element containing a working fluid of the at least one heat source.

9. The apparatus of claim 8 , wherein the working fluid includes:
a supercritical fluid.

10. The apparatus of claim 1 , wherein the internal heat source is the water-gas-shift reactor.

11. The apparatus of claim 1 , wherein the at least one pyrolysis reaction product includes:
at least one of tar and a non-condensable gas.

12. The apparatus of claim 11 , wherein the non-condensable gas includes:
at least one of molecular hydrogen, carbon monoxide, carbon dioxide, methane and ethane.

13. The apparatus of claim 1 , wherein the compression system in fluidic communication with an outlet of the water-gas-shift reactor and configured to compress the at least one synthesis gas product in at least one compression phase includes:
a first compressor in fluidic communication with an outlet of the water-gas-shift reactor and configured to compress the at least one synthesis gas product in a first compression phase; and
a second compressor in fluidic communication with an outlet of the first compressor and configured to compress the at least one synthesis gas product in a second compression phase.

14. The apparatus of claim 13 , further comprising:
a third thermal energy transfer system in thermal communication with the compression system and the steam reformer, the third thermal energy transfer system including a first heat exchanger configured to extract thermal energy from the at least one synthesis gas product during the first compression phase and at least a second heat exchanger configured to extract thermal energy from the at least one synthesis gas product during the second compression phase, wherein the third thermal energy transfer system is configured to supply the thermal energy extracted with the first heat exchanger and the thermal energy extracted with the second heat exchanger to the steam reformer.

15. The apparatus of claim 14 , wherein the third thermal energy transfer system is in thermal communication with the steam generator and the steam reformer and configured to transfer thermal energy from the steam reformer to the steam generator.

16. The apparatus of claim 1 , further comprising:
an external water source; and
a fourth thermal energy transfer system in thermal communication with the methanol reactor and a volume of water from the external water source and arranged to supply thermal energy from the methanol reactor to the volume of water from the external water source to form saturated steam.

17. The apparatus of claim 16 , wherein the second thermal energy transfer system is further configured to transfer thermal energy from the internal heat source to the volume of water to form saturated steam.

18. The apparatus of claim 17 , wherein an inlet of the steam generator is in fluidic communication with the external water source and is arranged to receive saturated steam, wherein the steam generator is configured to supply thermal energy to the saturated steam to form super-heated steam.

19. The apparatus of claim 1 , wherein the at least one reformed product from the steam reformer includes:
at least one of molecular hydrogen and carbon monoxide.

20. The apparatus of claim 1 , wherein the at least one synthesis gas product from the water-gas-shift reactor includes:
at least one of molecular hydrogen, carbon monoxide and carbon dioxide.

21. The apparatus of claim 1 , further comprising:
a char burner operably coupled to an output of the pyrolysis chamber and configured to burn a volume of char received from the pyrolysis chamber, wherein the char burner is in thermal communication with the steam reformer and configured to supply thermal energy to the steam reformer.

22. The apparatus of claim 1 , further comprising:
an additional steam generator in thermal communication with a portion of the at least one heat source and configured to convert a supply of water to steam.

23. The apparatus of claim 1 , further comprising:
a feedstock pre-heater.

24. An apparatus comprising:
a pyrolysis reaction chamber for containing a volume of feedstock;
a first thermal energy transfer system in thermal communication with the pyrolysis reaction chamber and at least one heat source for converting at least a portion of the volume of feedstock to at least one pyrolysis reaction product;
a second thermal energy transfer system in thermal communication with an outlet of the pyrolysis reaction chamber and an internal heat source for super-heating the at least one pyrolysis reaction product, wherein the second thermal energy transfer system is located downstream from the outlet of the pyrolysis reaction chambe

Assignees

• Terrapower Llc

Inventors

• Walter Joshua C
• Goodrich Samuel Scott

Classifications

• C10J2300/1884

  with one stream being synthesis gas · CPC title

• C10J2300/0979

  as supercritical steam · CPC title

• Y02P30/20

  using bio-feedstock · CPC title

• C10L2270/023

  for gasoline engines · CPC title

• C10G2300/1011

  Biomass · CPC title