Commodity Production Costs Report
Ethanolamines Production
Monoethanolamine Operating Costs & Plant Construction Costs
This report approaches the Ethanolamines production from ethylene oxide and ammonia. The process examined is a alkoxylation of ammonia with ethylene oxide similar to the one owned by Johnson Matthey Davy Technologies. In this process, Monoethanolamine (MEA), Diethanolamine (DEA) and Triethanolamine (TEA) are co-produced. The economic analysis performed assumes a plant located in the United States.
The report provides a comprehensive study of Monoethanolamine production and related Monoethanolamine production cost, covering three key aspects: a complete description of the Monoethanolamine production process examined; an in-depth analysis of the related Monoethanolamine plant capital cost (Capex); and an evaluation of the respective Monoethanolamine plant operating costs (Opex).
The Monoethanolamine 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 Monoethanolamine 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 Monoethanolamine 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 two major sections: (1) Reaction; and (2) Purification.
Reaction. Ammonia is mixed with water to form an aqueous ammonia solution (45 to 55 wt% of ammonia). Ammonia is supplied in excess to the reactor, so ethylene oxide is fully consumed in the reaction. Water also plays an important role accelerating the reaction. The reactions achieve yields from 98 - 99%. The balance is lost in minor side reactions that generate some heavy by-products, which need to be separated in the purification section. The final product composition depends exclusively on the molar excess of ammonia fed to the reactor. The reactor outlet comprises MEA, DEA and TEA, as well as unreacted ammonia dissolved in water and heavy by-products.
Ammonia recovery. The reaction product is fed to an ammonia stripping column for separating the excess ammonia present in the mixture. Ammonia/water vapors are recycled to the reaction, while the liquid bottom product is routed to a two-stage evaporator and then to a dehydration column, where residual ammonia and water are separated from ethanolamines and also recycled to the reaction area. Ethanolamines are withdrawn as the bottom product of the dehydration column and transferred to the purification section.
Purification. The ammonia-free ethanolamines are further separated in three purification columns. Small amounts of MEA and DEA may also be recycled to the reactor to balance the desired output of each ethanolamine - MEA/DEA/TEA ratios of 1/3 : 1/3 : 1/3. A small stream of heavy by-products waste is separated in the TEA purification step.
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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 Monoethanolamine 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 Monoethanolamine 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 Monoethanolamine 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 Monoethanolamine 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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