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- W2240875897 abstract "This paper presents estimates for the cost of production of hydrogen from natural gas and coal. Hydrogen from natural gas uses steam reforming to produce synthesis gas followed by shift conversion, carbon oxide removal and finally methanation. This route is analysed on several scales ranging from 5.2t/d (620GJ/d) to large facilities >880t/d, 105TJ/d. Concept capital and operating costs are developed on a self-consistent basis. For each scale the relationship between the price of gas and the hydrogen production cost is presented. Untaxed, hydrogen should be available to consumers at less than about $15/GJ. This is unlikely to be achieved for plants smaller than 10TJ/d. Large-scale operations (>53TJ/d) would meet this target at gas prices less than about $3GJ. Coal provides the lowest Australian energy cost. Hydrogen can be made from coal via synthesis gas. However the high carbon monoxide content of the synthesis gas requires high energy input to produce and purify the hydrogen. This generates different approaches with attendant cost variations. Overall, despite a much larger scale of operation (>300TJ/d), and lower feed cost (coal at $1.5/GJ), the hydrogen cost is higher than that from natural gas. The cost of carbon dioxide sequestration is estimated to increase the hydrogen production costs by 25% from gas and by about 50% from coal. This may make coal based routes marginal without the careful selection of the technology." @default.
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- W2240875897 date "2004-01-01" @default.
- W2240875897 modified "2023-09-26" @default.
- W2240875897 title "What price hydrogen" @default.
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