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Coker Bi-Monthly Unit Review
• Coker Current Issues• Figures
– Coker Furnace Operations Economics
– Coker Furnace Forward Plan
– Coker Furnace Tube Temperatures
– Coker Furnace Temperatures vs Annual Throughput
– Pitch Cut Point
– Coke Drum Vapor Line Pressure Drop
By S.M. Haik, Mar. 2000
Current Coker Issues• H-Oil Bottoms Test Run Report
• Adjust Coker Furnace Operation to Maximize Feed Rate
• Coker Furnace Forward Plan
• Furnace Pass Trip Delays
• Fully Automated Quench
• Coker Vapor Line Quench, WTC Recommendation
• Testing Control of LGO EP with Circulating Reflux Draw
• Testing HGO / Blowdown Circulation
• Install Feed Nozzles into Main Fractionator, Original Not In Place
• Performance Testing Coker WGC, WTC
By S.M. Haik, Mar. 2000
Coker Annual Throughput in BPD, Considering Capacity Loss due to Decokes
5800
6000
6200
6400
6600
6800
7000
7200
7400
7600
7800
17 18 19 20 21 22 23 24 25 26
BPD Fresh Feed to Coker
To
tal B
BL
S C
oker
Ch
arg
e A
nn
ually, M
MB
BL
/Yr
0
10
20
30
40
50
60
70
80
90
100
Days B
etw
een
Fu
rnace R
un
s
Coker Total Calendar Year BPD Throughput(Fresh Feed - Blending for Decokes)
Below 18 MBPD Fresh FeedRates Unchanged by Decokes
Run Between Decokes
By S.M. Haik, Mar. 2000
Improve F-51
Coker Furnace
Reliability
1. Collect Dec 15 – Jan 21 Lab Data
2. Test Current Feed Quality – Jack V
3. Test Recent Poor Quality Feed for Benchmarking – Jack V
Is ROI of Prelim Project Eng <= 2 years
Lost Coker Capacity from Pit Stop to T/A = ?6 Months of Prelim Project EngineeringMUST DECIDE BY APRIL 15, 2000
Otherwise, will not make Pit StopDoes the Jack V Lab Tests Predict Fouling
Tendency?
Determine Source of Foulant
F-51 Reliability Improved
N
N
Y
N
Y
N
Is the Current Coker Furnace Feed
Contaminated?
Does F-51 Show any signs of a short run, esp. roof tube?
1. Start Project Engineering Solution
2. Determine Source of Fouling
August 2000 and Root Cause has eliminated
problem
Start Project Engineering that meets 2 yr payout and Implement @ 2003 Turn Around
Purchase Equipment that meets 2 yr payout and Implement @ 2001 Pit Stop
Performance Test F-51. Go to Maximum Feed Rate until April 15,
2000
Can Foulant Source
Be Eliminated?N
N
Y
Y
Y
Y
Coker FurnaceTentative Plan
By S.M. Haik, Mar. 2000
By S.M. Haik, Mar. 2000
Coker Furnace Tube Skin TemperaturesApril '97 to Present