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Dunn-Nokota Methanol Project, Dunn County, North Dakota. Volume II. Preliminary plant design and cost estimate. [Proposed methanol project near Dunn Center, North Dakota]

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This section summarizes the significant results of Fluor's work in the Dunn-Nokota Methanol Project Feasibility Study: (1) preliminary design of the process plant and supporting facilities; cost estimates for the facilities and health and safety assessments related to the process plant. In addition to the base case methanol plant design and cost estimates, several alternative cases were investigated in less detail. The plant is designed to convert North Dakota lignite coal into chemical grade A methanol and other marketable by-products. The plant will receive run-of-mine coal at the plant site and will generate sufficient electrical power to meet normal plant and mine requirements. The plant has been designed with sufficient multiple trains, spare equipment and intermediate storage to provide an overall on-steam factor of 95%. In addition, the plant has been designed to be constructed in two phases with each phase having facilities to produce 50% of the total plant capacity. The lignite is crushed and screened and the sized coal is fed to Lurgi gasifiers where it is gasified under pressure in the presence of steam and oxygen to produce a raw synthesis gas. The raw gas is cooled and cleaned in downstream units to remove water, heavy hydrocarbons, sulfur compounds, and carbon dioxide. The purified gas, containing primarily carbon monoxide and hydrogen, is compressed and converted into methanol in the presence of a catalyst. The crude methanol is purified by distillation, producing chemical grade A product. Methane produced in the gasification process is converted into additional synthesis gas and subsequently into methanol. Condensed hydrocarbon and chemical liquids are separated and upgraded into marketable by-products. Sulfur compounds removed from the raw gas are converted into an elemental sulfur by-product. Carbon dioxide removed from the raw gas is purified and compressed for sale.

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Last Updated September 29, 2016, 16:23 (LMT)
Created September 29, 2016, 16:23 (LMT)
Citation Roy Long, Dunn-Nokota Methanol Project, Dunn County, North Dakota. Volume II. Preliminary plant design and cost estimate. [Proposed methanol project near Dunn Center, North Dakota], 2016-09-29, https://edx.netl.doe.gov/dataset/dunn-nokota-methanol-project-dunn-county-north-dakota-volume-ii-preliminary-plant-design-and-co
Netl Product yes
Poc Email Roy.long@netl.doe.gov
Point Of Contact Roy Long
Program Or Project KMD
Publication Date 1982-1-1