Commodity Production Costs Report
Propylene Glycol from Propylene Oxide
Propylene Glycol Operating Costs & Plant Construction Costs
This report analyses the economics of Propylene Glycol production from propylene oxide in the United States, via a typical hydration process. In this analysis, propylene oxide is hydrolyzed to propylene glycol. Dipropylene glycol is produced as by-product.
The report provides a comprehensive study of Propylene Glycol production and related Propylene Glycol production cost, covering three key aspects: a complete description of the Propylene Glycol production process examined; an in-depth analysis of the related Propylene Glycol plant capital cost (Capex); and an evaluation of the respective Propylene Glycol plant operating costs (Opex).
The Propylene Glycol 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 Propylene Glycol 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 Propylene Glycol 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 3 major sections: (1) Hydration; (2) Dewatering; and (3) Glycol Separation.
Hydration. Propylene Oxide (PO) is combined with process water and water condensed from downstream. The stream is heated and fed to a tubular reactor, where all PO is converted to Monopropylene Glycol as main product and Dipropylene Glycol (DPG) as by-product. Tripropylene glycol (TPG) and heavier glycols are also formed The process is carried out without catalyst and with excess of water, in order to achieve a higher selectivity to propylene glycol.
Dewatering. Excess of water is removed from reactor outlet by means of a multi-stage evaporator and a distillation column. It is recycled to the Hydration Reactor. A small purge is taken so as to prevent impurities buildup.
Glycol Separation. In a purification column, high-purity industrial grade propylene glycol is recovered as overhead stream. The bottom stream, composed mainly of DPG, is fed to the DPG Column, which further separates DPG from minor amounts of heavy glycols.
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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 Propylene Glycol 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 Propylene Glycol 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 Propylene Glycol 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 Propylene Glycol 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 Propylene Glycol Production Cost Reports

Propylene Glycol Production from Glycerol (Vapor-Phase Process)
This report presents the economics of Propylene Glycol production from glycerol in the United States. The process presented occurs in vapor-phase, similarly to Davy Technologies process.
Details: 120 kta United States-based plant | Q3 2024 | 107 pages | Issue A | From $799 USD

Propylene Glycol Production from Glycerol (Liquid-Phase Process)
This study presents the economics of Propylene Glycol production from glycerol using a liquid-phase process similar to Suppes process in the United States. In this process, glycerol is submitted to hydrogenation, yielding propylene glycol.
Details: 120 kta United States-based plant | Q3 2024 | 107 pages | Issue B | From $799 USD

Propylene Glycol from Chlorine and Propylene
This report presents the economics of Propylene Glycol production from chlorine and chemical grade (CG) propylene in the United States, via a typical hydration process. In this process, chlorine, propylene and water are combined to make propylene chlorohydrin, which reacts with inorganic base to yield the oxide. The oxide is then hydrolyzed to propylene glycol.
Details: 200 kta United States-based plant | Q3 2024 | 107 pages | Issue C | From $1,199 USD
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