Commodity Production Costs Report
Purified Terephthalic Acid from p-Xylene (BP Technology)
Terephthalic Acid Operating Costs & Plant Construction Costs
This assessment presents the economics of Purified Terephthalic Acid (PTA) production from p-xylene. The economic analysis is based in a plant located in the United States. The process examined in this report is similar to BP X Technology. In this process, p-xylene is oxidized to terephthalic acid, which is hydrogenated to obtain PTA. Drying and storage of crude terephthalic acid is not necessary.
The report provides a comprehensive study of Terephthalic Acid production and related Terephthalic Acid production cost, covering three key aspects: a complete description of the Terephthalic Acid production process examined; an in-depth analysis of the related Terephthalic Acid plant capital cost (Capex); and an evaluation of the respective Terephthalic Acid plant operating costs (Opex).
The Terephthalic Acid 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 Terephthalic Acid 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 Terephthalic Acid 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 three major sections: (1) Oxidation; (2) Crude terephthalic acid recovery; and (3) Purification.
Oxidation. p-Xylene is mixed with acetic acid solvent and a catalyst solution and then fed to the oxidation reactor. In the reactor, p-xylene is oxidized to terephthalic acid and most of the product generated is precipitated. Unreacted p-xylene, acetic acid and water formed are partially vaporized and sent to a high pressure column downstream for the recovery of the acetic acid and p-xylene. The residual gas from the column is sent to a oxidation unit, where volatile organic compounds are oxidized before disposal.
Crude terephthalic acid recovery. The crude terephthalic acid (CTA) slurry from reactor passes through a crystallization step and then, it is filtered in a band filter. Solvent recovered from CTA filter is fed to a stripper column for purification before it is recycled to the CTA crystallizers. Catalysts are also recovered from the stripper column. The catalyst solution is mixed with fresh catalyst is recycled to the oxidation reaction.
Purification. The CTA is dissolved with hot water and then sent to a hydrogenation step. During the hydrogenation, the undesired impurities are converted into soluble compounds, which remains dissolved in the mother liquor in a solid-liquid separation step downstream. The effluent from hydrogenation passes through a second crystallization step and subsequently filtered for the separation of PTA crystals from mother liquor. Part of the mother liquor is then recycled back to the oxidation reaction, in such a way that the dissolved hydrogenated compounds are converted to terephthalic acid. Finally, the PTA wet cake is dried and PTA product is obtained.
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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 Terephthalic Acid 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 Terephthalic Acid 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 Terephthalic Acid 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 Terephthalic Acid 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 Terephthalic Acid Production Cost Reports
Purified Terephthalic Acid from p-Xylene (GTC Technology)
This analysis presents production cost of Purified Terephthalic Acid (PTA) production from p-xylene. The process examined in this report is similar to that one developed by GTC Technology. Differently from the conventional technology, this process does not involve a hydrogenation step for Terephthalic Acid purification after oxidation. The economic analysis assumes a plant located in the USA..
Details: 750 kta United States-based plant | Q3 2024 | 107 pages | Issue D | From $799 USD
Medium-Purity Terephthalic Acid Production
This report presents the economics of Medium-Purity Terephthalic Acid (MTA) production. The analysis is based on a plant located in the United States starting from p-xylene using a typical catalytic oxidation process. In this process, p-xylene is oxidized to terephthalic acid (TPA). Then, the TPA is crystallized and recovered from the liquor and MTA is obtained as the final product.
Details: 750 kta United States-based plant | Q3 2024 | 107 pages | Issue A | From $799 USD
Purified Terephthalic Acid from p-Xylene (Conventional Process)
This study presents the economics of Purified Terephthalic Acid (PTA) production using p-xylene as the process feedstock. The study approaches the construction of a plant in the United States employing a conventional catalytic oxidation process. In this process, p-xylene is oxidized to terephthalic acid (TPA). The TPA is subjected to separation and drying steps, and then sent to hydrogenation to obtain PTA as the final product.
Details: 700 kta United States-based plant | Q3 2024 | 107 pages | Issue B | From $799 USD
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