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Chevron Phillips

Chemical Company LP

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What is Coke Controlling Additive 500?

A Chemical Mixture to Improve theEconomics of Furnace Operations

Developed Using Chevron Phillips

Expertise in OlefinsManufacturing and Product

Development From:

CPChem Research and Development

CPChem Commercial Olefin Units

Olefin Units and Research and

Development of Various Customers

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Chemical Company LP

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Composition of Controlling Additive 500

Sn/Si

Si

Sn

DMS

none

0

10

20

30

40

50

60

70

80

90

n o n e D M S tin silic o n tin / silic o n

Additive

CokeSpallingRate(mg/hr)

Sn/SiSn

Si

none

DMS

0

500

1000

1500

2000

2500

3000

n o n e D M S tin silic o n tin / silic o n

Additive

CoilCokingRate(mg

/hr)

Tin/Silicon (Sn/Si) Long-lasting CO suppression

>90% coke reduction

Reduces coke spalling

Stripped by sulfur (< readily

than Sn)

Silicon (Si)

Moderate CO suppression

Marginal coke inhibition

Reduced coke spalling

Sulfur (DMS)

Temporary CO suppression

Does not inhibit coking Reduces coke spalling

Tin (Sn)

Long-lasting CO suppression

80-90% coke reduction

Increased coke spalling

Stripped (slowly) by sulfur

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Chemical Company LP

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Introduction of CCA 500

Typically Injected into Individual

Steam or Hydrocarbon Headers

Decomposes above 1200 F (650 C)

Proprietary Atomization Technique

Allows for Injection Upstream of

Furnace Convection Section

Injected with Easy-to-Use, Skid-

Mounted Unit

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Chemical Company LP

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Advantages of CCA 500 Addition

Flexibility to Control Usage as Dictatedby Current Economic Conditions

Reduced Long-Term Risks Versus

Coating Technologies

Reduced Up-Front Capital Expenditure

Low Risk, Simple and Inexpensive

Testing

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Chemical Company LP

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Commercial Testing Results

Furnace Style Feed Type Size Residence Time Goal Results

S-Coil C2 30 Klbs/Hr .5 Sec

Triple Runlength -

Increase Charge 5-6 Times Longer - 4% More Charge

U-Tube EP 50 Klbs/Hr .2 Sec Increase Runlength Tenfold Increase in Runlengths

HSLR C2 60 Klbs/hr .2 Sec Increase Runlength 3-4 Times Longer RunlengthsMillisecond C2 70 Klbs/Hr .1 Sec Increase Runlength No - Tubes were in too carburized

HSLR EP 60 Klbs/Hr .2 Sec

Increase Runlength -

Lower CO

3-5 Times Longer - Reduced CO by

90%

S-Coil C2 Recycle 30 Klbs/Hr .5 Sec Increase Runlength 3 Times Longer

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Chemical Company LP

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Tube Metal Temperature(S-Coil, Recycle Ethane)

1600

1650

1700

1750

1800

1850

1900

1950

1 4 7 10 13 16 19 22 25 28 31 34 37 40

time (days)

871

891

911

931

951

971

991

1011

1031

1051

H2S baseline

CCA-500

Temperature

(degF)

Temperature

(degC)

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Chemical Company LP

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Reactor Pressure Drop

(HSLR, Ethane)

50

55

60

65

70

75

80

85

90

0 1.5 3 5 8 11 14 17 20 23 26 29 32 35 38 41 44 47

time (days)

Perc

entofMaximumC

oilPressureDrop

H2S Baseline

CCA-500