Systems and methods for controlling transport reactors

1. A method for operating a transport reactor, comprising:

fluidizing one or more particulates within a transport reactor, wherein the one or more particulates comprise one or more carbonaceous materials;

maintaining one or more pressure differentials between two or more points within the transport reactor using at least one integrally geared compression system, the at least one integrally geared compression system comprising:

a bull gear;

at least one pinion driven by the bull gear; and

two or more compressors, each being driven by the at least one pinion; and

circulating a primary fluid through the transport reactor using at least one of the two or more compressors,

wherein the transport reactor is a fluid catalytic cracker, wherein a first compressor of the two or more compressors compresses a primary fluid flowing into the fluid catalytic cracker and a second compressor of the two or more compressors compresses a product flowing out of the fluid catalytic cracker, and wherein the same pinion drives the first compressor and the second compressor.

2. The method of claim 1 , wherein the one or more pressure differentials make up an operational pressure profile of the transport reactor.

3. The method of claim 1 , further comprising diverting a portion of a raw product from the transport reactor for use as an energy source for rotating the bull gear.

4. A method for operating a transport reactor, comprising:

fluidizing one or more particulates within a transport reactor, wherein the one or more particulates comprise one or more carbonaceous materials;

controlling a pressure of one or more fluids to and one or more products from the transport reactor, using at least one integrally geared compression system, the at least one integrally geared compression system comprising:

a bull gear;

at least one pinion driven by the bull gear;

two or more compressors driven by the at least one pinion, wherein each of the two or more compressors is in fluid communication with the transport reactor; and

a motor driving the bull gear; and

controlling a pressure of one or more secondary fluids by introducing the one or more secondary fluids to the transport reactor using the at least one integrally geared compression system.

5. The method of claim 4 , wherein the transport reactor is a gasifier, and further comprising:

compressing a motive fluid within a feedstock prior to introducing the feedstock to the gasifier;

compressing an oxidant prior to introducing the oxidant to the gasifier; and

wherein the motive fluid is compressed by a first compressor of the two or more compressors and the oxidant is compressed by a second compressor of the two or more compressors.

6. The method of claim 4 , wherein a first secondary fluid is a motive fluid and a second secondary fluid is a purge fluid.

7. The method of claim 6 , further comprising controlling the pressure of the second secondary fluid and introducing the second secondary fluid to one or more purge nozzles disposed about the transport reactor.

8. The method of claim 6 , wherein a first compressor of the two or more compressors controls the pressure of a first portion of the second secondary fluid and introduces the first portion to a first purge nozzle, and wherein a second compressor of the two or more compressors controls the pressure of a second portion of the second secondary fluid and introduces the second portion to a second purge nozzle.

9. The method of claim 4 , further comprising diverting a portion of a raw product from the transport reactor to the motor as an energy source for the motor.

10. The method of claim 4 , wherein two or more integrally geared compression systems control an operational pressure profile of the transport reactor.

11. A transport reactor system, comprising:

a first transport reactor for fluidizing one or more particulates, wherein the one or more particulates comprise one or more carbonaceous materials; and

at least one integrally geared compression system, the at least one integrally geared compression system comprising:

a bull gear;

at least one pinion driven by the bull gear;

two or more compressors driven by the at least one pinion, wherein at least one of the two or more compressors is in fluid communication with the first transport reactor, wherein the at least one integrally geared compression system maintains an operational pressure profile of the first transport reactor,

a second transport reactor, wherein two or more integrally geared compression systems maintain one or more pressure differentials between two or more points within the second transport reactor.

12. The system of claim 11 , further comprising:

a first compressor of the integrally geared compression system in fluid communication with a first inlet of the first transport reactor; and

a second compressor of the integrally geared compression system in fluid communication with a second inlet of the first transport reactor.

13. The system of claim 11 , wherein the transport reactor is a gasifier.

14. The system of claim 11 , wherein the transport reactor is a fluid catalytic cracker.

15. The system of claim 11 , further comprising:

an inlet supplying a primary fluid into the first transport reactor; and

an outlet flowing a product out of the first transport reactor, wherein at least one of the two or more compressors compresses one of: (i) the primary fluid, and (ii) the product.

16. A transport reactor system, comprising:

a first transport reactor for fluidizing one or more particulates, wherein the one or more particulates comprise one or more carbonaceous materials; and

at least one integrally geared compression system, the at least one integrally geared compression system comprising:

a bull gear;

at least one pinion driven by the bull gear;

two or more compressors driven by the at least one pinion, wherein at least one of the two or more compressors is in fluid communication with the first transport reactor,

wherein the at least one integrally geared compression system maintains an operational pressure profile of the first transport reactor, wherein a first compressor of the two or more compressors compresses the primary fluid and a second compressor of the two or more compressors compresses the product.

17. The system of claim 16 , wherein the transport reactor is a gasifier.

18. The system of claim 16 , wherein the transport reactor is a fluid catalytic cracker.

19. The system of claim 16 , further comprising:

an inlet supplying a primary fluid into the first transport reactor; and

an outlet flowing a product out of the first transport reactor, wherein at least one of the two or more compressors compresses one of: (i) the primary fluid, and (ii) the product.