Two-stage gasifier and gasification process with feedstock flexibility

Patent metadata

Field	Value
Publication number	US-11084996-B2
Application number	US-201816154420-A
Country	US
Kind code	B2
Filing date	Oct 8, 2018
Priority date	Mar 4, 2016
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A two-stage gasification reactor may include a reactor lower section and a reactor upper section. The reactor lower section may include (a) a lower reactor body, (b) two primary feed nozzles, configured to introduce at least one of a dry feedstock or a first slurried feedstock and located on opposing terminal ends of the lower reactor body, and (c) at least two secondary feed nozzles, configured to introduce a liquid hydrocarbon feedstock, located on the lower reactor body. The reactor upper section may include (a) an upper reactor body, (b) at least one upper feed nozzle, configured to introduce at least one of a dry feedstock or a first slurried feedstock, located on the upper reactor body, and (c) an outlet.

First claim

What is claimed:

1. A two-stage gasification reactor, comprising:
a reactor lower section comprising:
(a) a lower reactor body;
(b) two primary feed nozzles, configured to introduce at least one of a dry feedstock or a first slurried feedstock, located on opposing terminal ends of the lower reactor body;
(c) at least two secondary feed nozzles, configured to introduce a liquid hydrocarbon feedstock from a liquid hydrocarbon feedstock supply system, located on the lower reactor body; and
(d) the liquid hydrocarbon feedstock supply system,
(e) wherein at least one secondary feed vector of the at least two secondary feed nozzles forms an angle from +/−1-45 degrees with respect to a primary feed vector of the two primary feed nozzles, and at least one of the at least two secondary feed nozzles is not co-planar in a z-axis with the two primary feed nozzles, and

a reactor upper section comprising:
(a) an upper reactor body;
(b) at least one upper feed nozzle, configured to introduce at least one of a dry feedstock or a first slurried feedstock, located on the upper reactor body; and
(c) an outlet.

2. The two-stage gasification reactor of claim 1 , wherein the at least two secondary feed nozzles are oriented so they provide feeds along secondary feed vectors that maintain a symmetry about the z-axis within the reactor lower section with feeds along primary feed vectors from the primary feed nozzles.

3. The two-stage gasification reactor of claim 1 , wherein the at least two secondary feed nozzles and the primary feed nozzle are oriented so they provide feeds along feed vectors that intersect at a feed intersection point that is substantially in the center of the lower reactor body.

4. The two-stage gasification reactor of claim 1 , wherein the at least two secondary feed nozzles are located on opposing terminal ends of the lower reactor body so that each terminal end possesses the same number of secondary feed nozzles.

5. The two-stage gasification reactor of claim 4 , wherein each secondary feed vector of each secondary feed nozzle on one terminal end is oriented to form a straight line with a secondary feed vector from a secondary feed nozzle on the opposing terminal end.

6. The two-stage gasification reactor of claim 1 , wherein at least one secondary feed vector from the at least two secondary feed nozzles forms an angle from about +/−1-45 degrees with respect to the z-axis of the reactor lower section.

7. A two-stage gasification reactor, comprising:
a reactor lower section comprising:
(a) a lower reactor body;
(b) two primary feed nozzles, configured to introduce at least one of a dry feedstock or a first slurried feedstock from a feeding system, located on opposing terminal ends of the lower reactor body;
(c) at least two secondary liquid feed nozzles, configured to introduce a liquid hydrocarbon feedstock from a liquid hydrocarbon feedstock supply system, located on the lower reactor body; and
(d) the liquid hydrocarbon feedstock supply system,
(e) wherein at least one secondary feed vector of the at least two secondary feed nozzles forms an angle from +/−1-45 degrees with respect to a primary feed vector of the two primary feed nozzles, and at least one of the at least two secondary feed nozzles is not co-planar in a z-axis with the two primary feed nozzles, and

a reactor upper section comprising:
(a) an upper reactor body;
(b) at least one upper feed nozzle, configured to introduce at least one of a dry feedstock or a first slurried feedstock, located on the upper reactor body; and
(c) an outlet.

8. The two-stage gasification reactor of claim 7 , wherein the at least two secondary feed nozzles are oriented so they provide feeds along secondary feed vectors that maintain a symmetry about the z-axis within the reactor lower section with feeds along primary feed vectors from the primary feed nozzles.

9. The two-stage gasification reactor of claim 7 , wherein the at least two secondary feed nozzles and the primary feed nozzle are oriented so they provide feeds along feed vectors that intersect at a feed intersection point that is substantially in the center of the lower reactor body.

10. The two-stage gasification reactor of claim 7 , wherein the at least two secondary feed nozzles are located on opposing terminal ends of the lower reactor body so that each terminal end possesses the same number of secondary feed nozzles.

11. The two-stage gasification reactor of claim 7 , wherein each secondary feed vector of each secondary feed nozzle on one terminal end is oriented to form a straight line with a secondary feed vector from a secondary feed nozzle on the opposing terminal end.

12. The two-stage gasification reactor of claim 7 , wherein at least one secondary feed vector from the at least two secondary feed nozzles forms an angle from about +/−1-45 degrees with respect to the z-axis of the reactor lower section.

13. The two-stage gasification reactor of claim 7 , wherein the secondary liquid feed nozzles are configured to atomize the liquid hydrocarbon feedstock.

Assignees

• Lummus Technology Inc

Inventors

• Williams Chancelor L
• Tsang Albert C
• Amick Philip Rodney
• Shah Jayesh
• Michaud Paul Edgar
• Lokare Shrinivas

Classifications

• C10J3/72

  Other features · CPC title

• C10J3/48

  Apparatus; Plants · CPC title

• C10J3/46 Primary

  Gasification of granular or pulverulent flues in suspension · CPC title

• C10J2300/0989

  Hydrocarbons as additives to gasifying agents to improve caloric properties · CPC title

• C10J3/506

  for entrained flow gasifiers · CPC title