Commodity Production Costs Report
Ethylene Oxide Production from Ethylene (Pure Oxygen as Oxidizer)
Ethylene Oxide Operating Costs & Plant Construction Costs
This report approaches the economics of Ethylene Oxide production from ethylene in the United States using a typical direct oxidation process. In the process examined, pure oxygen is used as the oxidizing agent. The reaction is carried out in the gaseous phase.
The report provides a comprehensive study of Ethylene Oxide production and related Ethylene Oxide production cost, covering three key aspects: a complete description of the Ethylene Oxide production process examined; an in-depth analysis of the related Ethylene Oxide plant capital cost (Capex); and an evaluation of the respective Ethylene Oxide plant operating costs (Opex).
The Ethylene Oxide 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 Ethylene Oxide 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 Ethylene Oxide plant operating costs analysis covers operating expenses, including variable costs like raw materials and utilities, and fixed costs such as maintenance, labor, and depreciation.
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The process under analysis comprises three major sections: (1) Oxidation; (2) Reagents Recovery; and (3) Products Separation.
Oxidation. Initially, fresh ethylene, methane make-up and oxygen are mixed with recycle gas (recovered downstream). Methane is used as ballast gas to control flammable limits in the process. The mixture is heated by heat exchange with reactor effluent, and fed to the multi-tubular catalytic reactor in which ethylene oxide (EO) is selectively produced over a silver catalyst supported on alumina. The heat from this exothermic reaction generates steam on the reactor shell-side, used for heating purposes throughout the process. Also, part of the ethylene is combusted, generating carbon dioxide and water.
Reagents recovery. The gaseous stream obtained from reactor outlet is counter-currently contacted with cold water in an absorber for the separation of light gases (mainly CO2, unreacted ethylene, oxygen and methane). The bulk of the gaseous overhead stream is directly cycled back to the EO reaction by a compressor. The remainder of the gaseous overhead stream is treated for CO2 removal before being sent back to the reactor. A liquid solution, comprising EO dissolved in water, is withdrawn from the absorber as a side stream.
Products Separation. The EO/water stream from the absorber is fed to the top of a stripper, where EO is separated from water. The stripper bottoms - a water/ethylene glycol mixture - is routed to a column for recovering antifreezing grade ethylene glycol sold as by-product. The overhead gaseous stream, relatively concentrated in EO, is condensed and sent to a light ends removal unit. Crude EO withdrawn from the bottom of this unit is fed to a final purification column for removal of water and heavy impurities. High purity Ethylene Oxide (99.9 wt%) obtained from column overhead is condensed and sent to storage.
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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 Ethylene Oxide 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 Ethylene Oxide 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 Ethylene Oxide 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 Ethylene Oxide 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
Other Ethylene Oxide Production Cost Reports

Ethylene Oxide Production from Ethylene (Air as Oxidizer)
This study examines Ethylene Oxide production in the United States. The process reviewed in this study is a direct oxidation technology using air instead of pure oxygen as the oxidizing agent.
Details: 550 kta United States-based plant | Q3 2024 | 107 pages | Issue B | From $999 USD
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