# US 8,771,475 B1 · Intertwined tube coil arrangement for a delayed coker heater

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- Number: US 8,771,475 B1
- Document ID: US8771475B1
- Status: Granted
- Kind: B1
- Application number: 12/622,062
- Filed: 2009-11-19
- Granted: 2014-07-08
- Earliest claimed: 2009-11-19
- Assignees: Great Southern Independent, L.L.C.
- Applicants: William C. Gibson; Robert L. Gibson
- Inventors: William C. Gibson; Robert L. Gibson
- Web page: https://patentgrep.com/patent/US8771475B1

## CPC

- C10G 9/005: {Coking (in order to produce liquid products mainly)}
- C10B 55/00: Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material (cracking oils C10G)
- C10G 9/20: Tube furnaces
- C10G: CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B); RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10B: DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B43/295)

## Abstract

A tube coil for a double fired coker heater wherein the tube coil has at least two independent flow passes in an intertwined serpentine pattern. The tubes are located in a common plane and plumbed in parallel with one another. These tube coils can be used in a number of configurations within the radiant section of a coker heater.

## Claims

### Claim 1

A coker heater comprising:
a radiant section with a top, a bottom, a pair of opposing end walls and a pair of opposing side walls;
a tube coil with at least two independent tubes; and
at least two burners;
wherein said tubes configured in an intertwined serpentine pattern; and
said tubes are located in a common plane.

### Claim 2 (depends on 1)

The coker heater of claim 1, further comprising said tubes being plumbed in parallel with one another.

### Claim 3 (depends on 1)

The coker heater of claim 1 further comprising a convection section and a stack, wherein said radiant section, said convection section and said stack are in fluid communication with one another.

### Claim 4 (depends on 1)

The coker heater of claim 1 further comprising:
a second tube coil;
a gravity brick wall located along a straight line between said first tube coil and said second tube coil;
said second tube coil having at least two independent tubes.

### Claim 5 (depends on 4)

The coker heater of claim 4, further comprising said tubes of said second tube coil being plumbed in parallel.

### Claim 6 (depends on 4)

The coker heater of claim 4, further comprising said tubes of said second tube coil being configured in an intertwined serpentine pattern.

### Claim 7 (depends on 4)

The coker heater of claim 4, further comprising said tubes of said second coil being on a common plane.

### Claim 8

A coker heater comprising:
a stack with a damper;
a convection section;
a radiant section with a top, a bottom, a pair of opposing end walls, a pair of opposing side walls, a tube coil with at least one burner located on both sides;
wherein said tube coil has at least two independent tubes, said tubes are configured in an intertwined serpentine pattern located on a common plane and plumbed in parallel.

### Claim 9 (depends on 8)

The coker heater of claim 8, further comprising
a second tube coil;
a gravity brick wall located along a straight line between said first tube coil and said second tube coil;
said second tube coil having at least two independent tubes; said tubes are configured in an intertwined serpentine pattern located on a second common plane and plumbed in parallel.

### Claim 10

A coker heater comprising:
a stack with a damper;
a convection section;
a radiant section with a top, a bottom, a pair of opposing end walls, a pair of opposing side walls, a first and a second tube coil with at least one burner located on both sides of each tube coil;
wherein said first tube coil has at least two independent tubes, said tubes are configured in an intertwined serpentine pattern located on a common plane and plumbed in parallel; and
said second tube coil having at least two independent tubes; said tubes are configured in an intertwined serpentine pattern located on a second common plane and plumbed in parallel.