石油设备网讯 据ICIS网站4月19日休斯顿报道 消息人士周四晚些时候证实，由于供应充足和成本上涨的压力相互冲突，美国4月丙烯合同价格较上月开始上涨。
4月聚合级丙烯（PGP）的合同价格保持在35.5美分/磅（783美元/吨），而化学级丙烯（CGP）的合同价格保持在34.0美分/磅。
由于生产水平和建筑供应的增加，丙烯价格已连续五个月下跌，4月价格开始上涨。美国丙烯库存从2月份的660万桶的历史高点下降，但仍高于历史水平，继续对市场施加下行压力。
充足的供应正与上游原油价格的上涨保持平衡。过去四周，西德克萨斯中质原油和布伦特原油期货均上涨超过4美元/桶。
较高的原油价格增加了炼油厂生产丙烯的成本，而炼油厂是美国丙烯的最大来源，并且倾向于提高丙烷脱氢（PDH）装置和裂解装置中使用的丙烷的价格。
美国丙烯合同通常在本月中旬结算。
丙烯的主出口是聚丙烯（PP）的原料。丙烯还用于生产丙烯腈（ACN）、环氧丙烷（PO）、一些醇类、异丙苯和丙烯酸。
美国主要丙烯生产商包括雪佛龙菲利普斯化工公司、埃克森美孚、希尔资源公司和壳牌化工。
主要买家包括法国阿科玛、奥升德高性能材料公司、巴西国家化学公司、陶氏化学、英力士公司、欧季亚公司和道达尔。
王磊 摘译自 ICIS
原文如下：
US April propylene contracts settle at rollover
US April propylene contract prices settled at a rollover from the prior month for a majority of the market amid conflicting pressures of ample supplies and higher costs, sources confirmed late on Thursday.
The April settlement keeps contract prices for polymer-grade propylene (PGP) at 35.5 cents/lb ($783/tonne) and for chemical-grade propylene (CGP) at 34.0 cents/lb.
The rollover follows five months of consecutive declines, which had been due to increased production levels and building supply. US propylene inventories have declined from an all-time high of 6.6m bbl in February, but remain above historical levels and continue to keep downward pressure on the market.
The ample supply is being balanced against rising upstream crude oil values. Both West Texas Intermediate and Brent crude oil futures have risen more than $4/bbl in the last four weeks.
Higher crude oil values increase costs for propylene produced in refineries, which is the largest source of US propylene, and tends to increase prices for propane used in propane dehydrogenation (PDH) units and crackers.
US propylene contracts are typically settled in the middle of the month for the current month.
The main outlet for propylene is as a feedstock for polypropylene (PP). Propylene is also used to produce acrylonitrile (ACN), propylene oxide (PO), a number of alcohols, cumene and acrylic acid.
Major US propylene producers include Chevron Phillips Chemical, ExxonMobil, Flint Hills Resources and Shell Chemical.
Major buyers include Arkema, Ascend Performance Materials, Braskem, Dow Chemical, INEOS, Oxea and Total.
