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Plant turns landfill gas into electricity

http://www.qingdaonews.com 2004-07-26 21:45:08

Plant turns landfill gas into electricity

宝马公司出新招 巧将沼气变电能

More than a year after BMW Manufacturing Co. announced plans to convert landfill gas to electricity, officials say the project has exceeded expectations.

It's good news for similar projects being considered throughout the state. A project in Lee County should begin operation in November and another in Anderson should be running by next spring.

Carbon dioxide emissions were reduced by 34,000 tons in the last nine months of 2003 because the plant used less natural gas and electricity and because the methane gas emissions from the landfill were captured.

BMW is on target to eliminate annually the equivalent of emissions from more than 60,000 cars.

"We think we're on target for about 55,000 tons, as long as we operate this," said Duncan Seaman, BMW facilities and energy manager.

In addition to reducing emissions, BMW saves about $1 million a year in energy costs.

"The reality of the project has definitely exceeded our expectations," Seaman said.

The methane gas generated by the decaying waste is shipped about 10 miles to the plant from the landfill. The energy is used in various processes including the paint shop, assembly lines and body lines, and to heat and cool the facility.

Other officials are taking notice, too.

"I had an international engineer come by my office the other day and tell me the BMW-Palmetto project had raised the awareness of landfill gas to energy all over the world," said Sonny Dubose, program manager for the state Office of Energy.

The original expectation was the gas would allow the plant to run two of its four turbines full time.

"The reality has been very good quality landfill gas," Seaman said. "The equipment has run very well. We have had very high availability. We've been able to operate - more than we expected - all four turbines, except for maintenance."

(Agencies)

德国宝马汽车公司(BMW)曾经宣布计划将垃圾填埋场所产生的沼气转化为电能。一年多以后,有关官员表示这一项目已经超出了原来的期望。

对于德国国内正在酝酿中的类似项目来说,这是一个好消息。德国莱镇(Lee County)的一个项目将于11月开始运作,安德森的另一个项目也将在明年春天启动。

在2003年最后9个月里,二氧化碳的排放量减少了34000吨,这是因为BMW生产厂减少了天然气和电能的使用量,而且吸收利用了掩埋的垃圾释放出的沼气。

BMW的目标是每年消除相当于6万多辆汽车排放的废气。

BMW的设备和能源经理邓肯·西蒙说:“我们认为,只要这个项目能够顺利运作,我们的目标是大约(每年)5.5万吨。”

除了减少尾气排放外,BMW每年节省的能源消耗约为100万美元。

西蒙说:“这个项目的现状无疑超出了我们的期望。”

由腐烂的垃圾产生的沼气被船只从垃圾掩埋场运送到大约10英里外的工厂。这些能源用于不同的流程,包括上漆车间,装配线、车身生产线以及设备的加热或冷却。

其他的官员也注意到了这一点。

“几天前,一位国际级的工程师经过我的办公室,告诉我BMW-Palmetto的项目引起了全世界对填埋垃圾产生的气体转化为能源的关注。”德国国家能源办公室的项目经理桑尼·杜博斯说。

最初他们希望该气体能使生产车间的四个汽轮机中的两个实现全天候运行。

西蒙说:“事实上填埋垃圾产生的气体质量非常棒,设备运行情况良好。我们(的项目)具有很高的实用性。除了维修外,我们能(让这些气体)运行所有四个汽轮机,这远远超出了我们的预料。”

landfill: 垃圾掩埋法
methane: 沼气
equivalent: 相等物,等价物
take notice: 注意
turbine: 汽轮机

(中国日报网站译)

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