据普氏能源资讯2019年9月11日休斯顿报道，美国能源信息署（EIA）周三公布的统计数据显示，在截止9月6日的一周里，美国丙烯库存下降到了406.2万桶。这是美国丙烯库存在过去3周稳步增长以后首次下降。

美国今年丙烯库存最低水平是在一个月前创下的，当时截至8月9日的一周，丙烯库存下降到了388.5万桶。

上周美国非燃料丙烯库存环比减少了10.1万桶，但仍比去年同期增加了125.5万桶。与此同时，炼厂开工率略有增加，为95.1%，环比上升了0.3%。

一位消息人士将美国上周丙烯库存下降归因于丙烷脱氢问题。陶氏化学公司位于得克萨斯州自由港的丙烷脱氢（PDH）装置在9月初停产检修。消息人士称，PDH装置料将停产30-60天。

李峻 编译自 Platts

原文如下：

US propylene stocks down for first time in three weeks: EIA

US propylene stocks fell to 4.062 million barrels the week ended September 6, according to the US Energy Information Administration data released Wednesday.

This represented the first decrease for propylene inventory after steadily increasing for the past three weeks.

The lowest level of 2019 was reached one month ago when stocks fell to 3.885 million barrels the week ended August 9.

Non-fuel-use propylene stocks were down 101,000 barrels from a week earlier, though still up by 1.255 million barrels from the same time last year. The decrease came alongside slightly higher refinery utilization rates of 95.1%, up 0.3% week on week.

A source attributed the decline in propylene stock to propane dehydrogenation issues. Dow is expected to have a turnaround at its Freeport, Texas, PDH unit in early September. The company would not confirm any turnaround, but sources say the PDH unit is expected to be down for 30-60 days.