Natural Gas Isn’t Burning Nearly As Cleanly As We Thought

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Natural Gas Isn’t Burning Nearly As Cleanly As We Thought
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Ironically, Shell's high-priority solution is to electrify its natural gas operations because burning the stuff doesn't work well.

ChatGPT & DALL-E generated panoramic image of a natural gas processing facility with methane emissions visible from various sources like flare stacks, stationary engines, and tanks

That roughly 13.5 million tons is equivalent to 1.35 billion tons of carbon dioxide with the 10-year global warming potential of methane, 1.2 billion tons with the 20-year GWP, and 400 million tons with the 100-year GWP. Remember that the world’s total carbon dioxide emissions are only around 40 billion tons a year. The USA’s methane emissions are equivalent to over 3% of that in the short term and 1% at the longest scale we consider.

Let’s tease that out a bit. A ton of very low sulfur fuel oil turns into about 3.15 tons of carbon dioxide when burned. A ton of natural gas turns into about 2.75 tons of carbon dioxide when burned. Seems like a good deal, right? So best practice among the non-best practice types is to burn it in a flare stack which maximizes combustion. That’s the third choice. Except that there are a multitude of problems with this in reality. The first is that a lot of flare stacks just aren’t well designed, engineered, or maintained. A bunch of them, it turns out, are malfunctioning. And since no one really cared about methane until recently, no one noticed.

This wouldn’t have been a problem if the brothers had been maintaining the levels of chlorine in the drinking water to kill the nasty bacteria. But they had no clue and so were responding to complaints from sensitive locals about the chlorine taste of the water and reducing chlorine levels over time.

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