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Total demand for feeds with high propylene yield was
615,600 b/d in first-quarter 2015, 34, 100 b/d ( 5.9%) more
than in fourth-quarter 2014. Total demand for these feeds in
second-quarter 2015 was 601, 100 b/d, 14,500 b/d ( 2.4%) less
than in first-quarter 2015. As economic incentives for propane and normal butane compared with ethane improved
during second-quarter 2015, ethylene producers maintained
demand for heavy feeds and increased their use of propane
and butane during May and June. Demand for feedstocks
with high propylene yields was 641,400 b/d in June and was
34,700 b/d more than in March.
Petral Consulting estimates coproduct supply was consistently above 22 million lb/day throughout first-half 2015.
Coproduct supply was 22. 6 million lb/day in first-quarter
2015 and 22. 4 million lb/day in second-quarter 2015. Coproduct supply for first-quarter 2015 was 195 million lb
( 10.6%) more than in first-quarter 2014, while coproduct
supply during this year’s second quarter was 163 million lb
( 8.7%) more than in second-quarter 2014.
Coproduct supply from light feeds averaged 16. 5 million lb/day in first-quarter 2015 and 16. 3 million lb/day in
second-quarter 2015. Production from light feeds in first-quarter 2015 was 199 million lb ( 15.5%) more than in first-quarter 2014, while production from light feeds in second-quarter 2015 was 169 million lb ( 12.8%) more compared
with the same period last year.
The key factor for the increase in coproduct supply in
first-quarter 2015 was the increase in demand for propane
compared with demand the previous year. Demand for propane in first-quarter 2015 was 74,800 b/d ( 24.4%) more than
in first-quarter 2014. In second-quarter 2015, demand for
all light feeds increased by 45,700 b/d, while demand for
propane and butane declined by 13,400 b/d. The increase
in total light feed demand offset the decline in demand for
propane and normal butane (Table 4).
PDH plant, refineries
According to PetroChem Wire, the PDH plant in the Houston
Ship Channel operated at full capacity in first-quarter 2015 but
had some downtime for maintenance in April and June. Downtime reduced propylene production by 1. 2-1. 3 million lb/day in
April 2015 and by 0.7-0.8 million lb/day in June 2015.
COPRODUCT PROPYLENE FROM ETHYLENE PLANT Table 4
light feeds heavy feeds Production (est.)
2015 –––––––––––––– Million lb/month –––––––––––––––––
January 530.3 181.2 711.5
February 452.4 172.2 624.6
March 500.3 196.1 696.4
April 455.9 186.9 642.8
May 498.1 185.0 683.1
June 530.5 178.6 709.1
Source: EIA Petroleum Supply Monthly