Second , n-solv determined that even small amounts of methane-a by-product of using a solvent-could contaminate the propane and degrade its performance .
其次,n-solv坚持认为即使是少量的甲烷在溶剂使用中一种的副产品也会污染丙烷并削弱其效用。
Clean fuels include clean diesel , bio-diesel , compressed natural gas , propane and hybrid technologies .
清洁燃料包括清洁柴油、生物柴油、压缩天然气、丙烷以及混合技术。
Other options include stoves that run on propane gas or pellets , or reflect solar radiation onto a cooking vessel .
其它选项包括使用丙烷气或木球,或将太阳能辐射反射到烹饪器皿上。
The propane , in gaseous form , returns to the surface with the natural gas and is then recaptured and recycled .
气化的丙烷与天然气一起返回地面,然后回收循环使用。
Smith adds that the equipment needed for heating and reusing the propane is less expensive than technology for managing the large volumes of water used in the steam process .
Modifications included swapping out the electric motor for a working regner steam engine powered by a volatile butane / propane mix that provides about 20 minutes of motility .
In october 2007 , the company agreed to pay $ 373 million to settle charges arising from the texas city blast , oil spills in alaska and allegations that bp traders manipulated the propane market .
Firefighters encountered a tangle of rattlesnakes , downed power lines and combustible propane tanks wednesday as they struggled to get an upper hand on a wildfire that has destroyed dozens of homes .
An explosion at a bp oil refinery in texas in 2005 that killed 15 workers , a series of other safety concerns and allegations that the company fixed propane prices have battered its reputation in america .
Though the device itself had already began to detonate , the bomb - pieced together with propane , gasoline and fireworks - proved faulty and did not explode .