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Tag: Investment

Seeking out energy in sulphuric acid plants

A sulphuric acid plant in Northwest China is looking to capture its low-grade heat for re-use. With the support of Alfa Laval’s semi-welded plate heat exchangers and energy recovery expertise, in winter, all of the recovered low-grade heat could be put back into their system with 30% being used in production and the remaining 70% going to heating. During the summer, 14% of the energy that is no longer needed for indoor heating could be used to preheat boiler feedwater. This would enable them to significantly reduce the amount of fossil fuels used in production, without redesigning their entire factory footprint.

Methanol’s continuing rise

While demand for ammonia remains – for now at least – strongly tied to fertilizer and farming, over the three decades that I’ve edited this publication, methanol’s story has been a very different one, with a succession of major new slices of demand coming every few years from new applications that flare up and then mature or even drop away again. For a while in the 1990s it was MTBE, the oxygenated fuel additive that had a brief flourish in the US before being shut down by leaking fuel tanks leaching into ground water. Then there was dimethyl ether (DME) as a blendstock for LPG, and methanol itself directly blended into gasoline in China to keep up with soaring vehicle fuel demand. More recently, methanol to olefins (MTO) has added almost another 25% of demand over and above existing chemical and fuel uses. But as the world cracks down on coal production and use, China’s attempt to use methanol as a way of using domestic coal to replace imported oil seems to have passed its high water mark and begun to recede.