o欧盟开始推广第二代油气回收系统

欧盟推广第二代“油气回收系统”
《歐盟擬在加油站推廣油氣回收新係統》
《欧盟推广油气回收新系统》
日期：2008-12-05     来源：新华网、《科技日报 》均有报道
欧盟拟在加油站推广油气回收新系统2008-12-05 15:51  来源： 新华社
【连云港新闻网】　新华社布鲁塞尔12月4日电（记者潘革平）欧盟委员会4日公布了一项法律草案，要求欧盟境内所有汽油年销售量超过500立方米的新建和改建的加油站必须安装第二代“油气回收系统”，以减轻有毒气体对人体及环境的危害。
　　草案还要求，现有汽油年销售量超过3000立方米的加油站最迟不得晚于2020年安装第二代“油气回收系统”。这一草案还需得到欧洲议会和各成员国的批准后才能生效。
　　加油站的油气挥发物经紫外线照射后，会与空气中的氮氧化物发生物理化学反应，生成光化学烟雾，形成温室效应，破坏臭氧层。此外，油气挥发物中还含有致癌物苯。
　　油气回收系统的作用是将加油站在加油过程中产生的油气，通过密闭收集，送入储油罐里或直接抽回加油泵里，直接抽回加油泵是最新的油气回收技术，可避免对加油站现有管道进行改造。（完）

第二代的技术

这个记者翻译错了，其实是“第二阶段(Satge II)油气回收"，以下是新华社的最新英文原文


European Commission Welcomes Parliament Vote to Cut Petrol Vapor Emissions   

The European Commission on Tuesday welcomed European Parliament's vote to approve legislation proposed by the commission to cut harmful vapor emissions from fuel stations.

The new directive will ensure that harmful petrol vapor which escapes during the refueling of cars at service stations is captured and recycled.

"This directive will improve the protection of European citizens' health by contributing to the attainment of agreed EU air quality standards for two harmful pollutants -- ground level ozone and benzene.

The rapid agreement reached by parliament and Council (of Ministers) on the basis of the commission's proposal from last December underlines the EU's continuing commitment to tackling air pollution at source," EU Environment Commissioner Stavros Dimas said.

The directive will require so-called Stage II petrol vapor recovery technologies to be fitted to petrol pumps at all service stations with an annual petrol throughput greater than 500 cubic meters when they are newly constructed or substantially refurbished.

All service stations situated underneath residential accommodation will also need to install this equipment if their throughput is above 100 cubic meters per year (corresponding to about six cars filling up each day). The largest existing stations with an annual throughput greater than 3,000 cubic meters will also have to adopt the technologies by 2018 at the latest.

Inside a car's petrol tank, petrol vapor exists above the liquid petrol. When the car is refueled this vapor is displaced and escapes to the atmosphere. Stage II petrol vapor recovery captures this escaping vapor. This is done by creating a vacuum to suck back the vapor through the dispensing hose and nozzle, either to the station's underground storage tank or directly back to the fuel pump. This latter technology is newer and does not require any modification of the underground pipe work of the service station.

Petrol vapor contains a mix of hydrocarbons including benzene, which is a human carcinogen with no known safe threshold. An air quality limit value for benzene will enter into force in the EU in2010.

Hydrocarbons also react in the atmosphere to make ground-level ozone pollution, which can be transported over hundreds of kilometers in the air.

In contrast to the ozone layer in the stratosphere, which protects humans from harmful ultraviolet radiation, ozone at ground level is harmful both to human health and ecosystems. Human exposure to ozone has effects ranging from irritation of the respiratory system to inflammation of the lungs and, in acute cases affecting the most vulnerable people, even death. No safe level of exposure to ozone has yet been determined in the EU. Regarding the environment, ozone damage is the most serious regional air pollution problem affecting forests, vegetation and agricultural crops in Europe.

(Xinhua News Agency May 6, 2009)

好东西，学习了