乙醇运输背景

Marina R. Denicoff
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引用次数: 16

摘要

2007年前6个月,美国的乙醇产量总计接近30亿加仑,比去年同期高出32%。截至8月29日,共有128家乙醇工厂,年生产能力总计67.8亿加仑,另有85家工厂正在建设中。美国的乙醇生产能力正在迅速扩大,目前预计到2009年初每年将超过130亿加仑。乙醇需求推高了玉米价格,导致玉米产量扩大,随着玉米用途从出口和饲料用途转向乙醇生产,这影响了谷物运输。目前,大多数乙醇生产在美国的中心地带,但80%的美国人口(因此隐含的乙醇需求)生活在沿海地区。随着乙醇生产在美国中心地带不断扩大,需要考虑的运输因素包括:•美国运输系统运输乙醇、原料和乙醇生产的副产品的能力。•玉米靠近乙醇工厂(约50英里)的可用性。•饲料场相对于乙醇生产区的位置。乙醇生产能力的扩张速度比原先预期的要快。今年5月,美国农业部发布了一份报告,分析了生物燃料需求扩大对美国农业的影响。该分析侧重于与2007年2月发布的基线长期预测相关的两种乙醇扩张情景。在情景1中,到2016年,美国乙醇产量将增加到每年150亿加仑(bgy)。在第二种情况下,到2016年,美国的乙醇产量将增加到20%。AMS将其模式份额分析应用于美国农业部的三种情景:基线(2007年2月的长期预测)和上述两种情景,以评估乙醇生产扩大对粮食运输的影响。假定2000-2004年5年的模态份额率在预测期间保持不变。•运输影响因每种情况和运输方式而异,部分原因是由于运输方式的差异。•如果玉米出口减少,铁路和驳船需求可能会减少,但短期内乙醇和DDGS运输的增加可以抵消铁路谷物运输的减少。•在所有情况下,卡车需求都在增长。2005年,铁路是乙醇的主要运输方式,运输了60%的乙醇产量,约29亿加仑乙醇。卡车运输30%,驳船运输10%。乙醇生产的增长以及新工厂的建设和扩建并没有受到物流问题的阻碍。2006年,铁路跟上了乙醇的增长。由于乙醇产量在一年内增长了26%,铁路运输的酒精(其中大部分是乙醇)增加了28%。铁路货运预计将从2002年的18.79亿吨增加到2035年的35.25亿吨,在乙醇生产扩张之前增长近88%。从2002年到2020年,卡车货运量预计将增长近一倍,而到2015年,司机短缺预计将达到21.9万人——在乙醇生产扩张之前。2004年,有130万名长途重型卡车司机。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ethanol Transportation Backgrounder
For the first 6 months of 2007, U.S. ethanol production totaled nearly 3 billion gallons—32 percent higher than the same period last year. As of August 29, there were 128 ethanol plants with annual production capacity totaling 6.78 billion gallons, and an additional 85 plants were under construction. U.S. ethanol production capacity is expanding rapidly and is currently expected to exceed 13 billion gallons per year by early 2009, if not sooner. Ethanol demand has increased corn prices and led to expanded corn production, which is affecting grain transportation as corn use shifts from exports and feed use to ethanol production. Most ethanol is currently produced in the Nation’s heartland, but 80 percent of the U.S. population (and therefore implied ethanol demand) lives along its coastlines. Transportation factors to consider as ethanol production continues to expand in the Nation’s heartland include: • The capacity of the Nation’s transportation system to move ethanol, feedstock, and co-products produced from ethanol. • The availability of corn close to ethanol plants (~ 50 miles). • The location of feedlots relative to ethanol producing areas. Ethanol production capacity expansion is occurring faster than originally anticipated. In May, USDA issued a report analyzing the effects of an expansion in biofuel demand on U.S. agriculture. The analysis focused on two ethanol expansion scenarios in relation to the Baseline long-term projections issued in February 2007. Under Scenario 1, U.S. ethanol production increases to 15 billion gallons per year (bgy) by 2016. Under Scenario 2, U.S. ethanol production increases to 20 bgy by 2016. AMS applied its modal share analysis to the three USDA scenarios: baseline (February 2007 long-term projections) and the two scenarios described above to evaluate the impact of ethanol production expansion on grain transportation. The 5-year 2000-2004 modal share rates were assumed to stay constant over the projected period. • Transportation impacts vary for each scenario and transportation mode due in part to modal share differences. • Rail and barge demand could decrease if corn exports decrease, but in the short-term increased ethanol and DDGS shipments could offset decreases in rail grain shipments. • Truck demand increases under all scenarios. In 2005, rail was the primary transportation mode for ethanol, shipping 60 percent of ethanol production or approximately 2.9 billion gallons of ethanol. Trucks shipped 30 percent and barges 10 percent. The growth of ethanol production and the construction and expansion of new plants have not been hampered by logistical concerns. Railroads have kept up with ethanol growth in 2006. As ethanol production grew by 26 percent in one year, railroads’ shipments of alcohols (most of which is ethanol) increased by 28 percent. Rail freight is forecast to increase from 1,879 million tons in 2002 to 3,525 million tons by 2035, an increase of nearly 88 percent—before ethanol production expansion. Truck freight is forecast to almost double from 2002 to 2020, while driver shortages are projected to reach 219,000 by 2015—before ethanol production expansion. In 2004, there were 1.3 million long-haul heavy-duty truck drivers.
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