Commodity Production Costs Report
Hexamethylenediamine Production from Adipic Acid
Hexamethylenediamine Operating Costs & Plant Construction Costs
This report presents the economics of Hexamethylenediamine (HMDA) production from adipic acid. In the process examined, adipic acid is reacted with ammonia, forming ammonium adipate and adipamide, which are then dehydrated to adiponitrile intermediate. The adiponitrile is finally hydrogenated to HMDA. The economic analysis performed assumes a plant located in the United States.
The report provides a comprehensive study of Hexamethylenediamine production and related Hexamethylenediamine production cost, covering three key aspects: a complete description of the Hexamethylenediamine production process examined; an in-depth analysis of the related Hexamethylenediamine plant capital cost (Capex); and an evaluation of the respective Hexamethylenediamine plant operating costs (Opex).
The Hexamethylenediamine production process description includes a block flow diagram (BFD), an overview of the industrial site installations, detailing both the process unit and the necessary infrastructure, process consumption figures and comprehensive process flow diagrams (PFD). The Hexamethylenediamine plant capital cost analysis breaks down the Capex by plant cost (i.e., ISBL, OSBL and Contingency); owner's cost; working capital; and costs incurred during industrial plant commissioning and start-up. The Hexamethylenediamine plant operating costs analysis covers operating expenses, including variable costs like raw materials and utilities, and fixed costs such as maintenance, labor, and depreciation.
Key reference(s): ?
The process under analysis comprises four major sections: (1) Adiponitrile Formation; (2) Adiponitrile Separation; (3) Hydrogenation; and (4) HMDA Purification
Adiponitrile Formation. Adipic acid, ammonia, and phosphoric acid are fed to a reactor, where the adipic acid reacts with ammonia generating ammonium adipate salt, which is subsequently dehydrated in the presence of phosphoric acid to produce adiponitrile. The reactor effluent is fed to a gas-liquid separator.The liquid phase is sent to an evaporator coupled to the reactor to recover the catalyst and unreacted adipic acid while removing heavy impurities. The gas phase is sent to a distillation column from which the a crude adiponitrile stream is separated as a side product. The column bottoms stream, which is comprised of reaction intermediates, is recycled to the reactor and a top stream of water, ammonia and light impurities is sent to an ammonia recovery area for recycling the ammonia back to the reactor and discarding light ends and water.
Adiponitrile Separation. The crude adiponitrile stream is passed through a fixed-bed reactor packed with a silica-alumina catalyst to convert the hard to separate 2-cyanocyclopentylideneimine (CPI) impurity into a lighter substance. After that, two distillation steps follow to remove light and heavy impurities. Purified adiponitrile is routed to the hydrogenation section.
Hydrogenation. Adiponitrile, fresh, and recycle hydrogen are fed to a “gas-lift” reactor, where they quickly react on the surface of RaneyTM nickel catalysts yielding Hexamethylenediamine (HMDA). High catalyst concentrations are used to keep the concentration of unreacted nitriles very low. Water and caustic soda are fed to the reactor to make up for losses leaving in the crude HMDA.
HDMA Purification. Crude HMDA is passed through a distillation train, to remove water, 1,2-diaminocyclohexane (DCH), and high boilers. DCH is still sent to a column before it is purged, in which residual HDMA is recovered.
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Professional report based on Q3 2024 economic data, ensuring timely evaluations.
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Content Highlights
Plant Capital Cost Summary
Summary outlining the capital cost required for building the Hexamethylenediamine production plant examined.
Plant Capital Cost Details
Detailing of fixed capital (ISBL, OSBL & Owner’s Cost), working capital and additional capital requirements.
Plant Cost Breakdowns
Breakdown of Hexamethylenediamine process unit (ISBL) costs and infrastructure (OSBL) costs; plant cost breakdown per discipline.
Operating Costs Summary
Summary presenting the operating variable costs and the total operating cost of the Hexamethylenediamine production plant studied.
Operating Cost Details
Detailing of utilities costs, operating fixed costs and depreciation.
Plant Capacity Assessment
Comparative analysis of capital investment and operating costs for different Hexamethylenediamine plant capacities.
Production Process Information
Block Flow Diagram, descriptions of process unit (ISBL) and site infrastructure (OSBL).
Process Consumptions
Raw materials and utilities consumption figures, by-products credits, labor requirements
Process Diagrams
Process flow diagrams (PFD), equipment list and industrial site configuration
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Other Hexamethylenediamine Production Cost Reports
Hexamethylenediamine Production from Acrylonitrile
This report presents the economics of Hexamethylenediamine (HMDA) production from acrylonitrile. In the process examined,acrylonitrile is electrodimerized, followed by hydrogenation, yielding adiponitrile intermediate. The adiponitrile is then hydrogenated to HMDA. The economic analysis is based on a plant constructed in the United States.
Details: 200 kta United States-based plant | Q3 2024 | 107 pages | Issue C | From $1,199 USD
Hexamethylenediamine Production from Adiponitrile
This report presents the economics of Hexamethylenediamine (HMDA) production from adiponitrile. In the process examined, adiponitrile is hydrogenated to HMDA. The economic analysis is based on a plant constructed in the United States.
Details: 200 kta United States-based plant | Q3 2024 | 107 pages | Issue D | From $999 USD
Hexamethylenediamine Production from Butadiene
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Details: 200 kta United States-based plant | Q3 2024 | 107 pages | Issue A | From $1,199 USD
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