TAILIEUCHUNG - Impact of high CO2 content in natural gas

This paper will go through how the CO2 can be utilised to produce methanol or ammonia, and also co-production of ammonia and methanol. It will show how the overall CO2 foot print can be reduced for the same production capacity | PETROVIETNAM PETROVIETNAM JOURNAL Vol. 10 p. 55 - 58 2019 ISSN-0866-854X PETR0 B V JOURNAL mH Impact of high CO2 content in natural gas Pat Han Haldor Topsoe A S Email PAH@ Summary Most of the production of bulk chemicals like ammonia and methanol uses natural gas as feedstock and fuel. Especially the reforming process requires a high amount of energy and the chemical products are themselves energy which makes the production of these molecules highly energy intensive. For these reasons the CO2 emissions from methanol and especially ammonia production are significant. CO2 is considered as a greenhouse gas GHG and with today s fossil fuel consumption the impacts on climate changes are apparently bigger than anticipated. At Haldor Topsoe we work hard to improve plant efficiency by utilising the natural resources in the best and most efficient way. What is the impact on the ammonia and methanol plants in case the natural gas contains more and more CO2 This paper will go through how the CO2 can be utilised to produce methanol or ammonia and also co-production of ammonia and methanol. It will show how the overall CO2 foot print can be reduced for the same production capacity. Key words High CO2 content ammonia methanol urea IMAP . 1. Ammonia and urea production For the ammonia plant the additional CO2 would normally not add any value because CO2 is just considered as an inert costing some energy to remove. In worse cases with additional CO2 the reformer and or the CO2 removal section will become bottlenecks and the ammonia plant capacity will be reduced from current level. This will of course have an important impact on the business for plant owners. In case of urea production then it can be beneficial to go from a lean natural gas to a natural gas containing more CO2 because the ammonia and CO2 production can be better balanced. With lean natural gas there would typically be too low carbon content so to balance ammonia and CO2 production to produce urea some .

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• High CO2 content
• High CO2 content in natural gas
• Natural gas
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