Commodity Production Costs Report
Purified Isophthalic Acid Production
Isophthalic Acid Operating Costs & Plant Construction Costs
This feasibility study provides the costs associated with the construction of a plant in the United States for the production of Isophthalic Acid (IPA) from m-xylene using a typical liquid-phase oxidation process. The process targeted in this report comprises m-xylene oxidation, crude Isophthalic Acid recovery and further purification via hydrogenation for obtaining Purified Isophthalic Acid.
The report provides a comprehensive study of Isophthalic Acid production and related Isophthalic Acid production cost, covering three key aspects: a complete description of the Isophthalic Acid production process examined; an in-depth analysis of the related Isophthalic Acid plant capital cost (Capex); and an evaluation of the respective Isophthalic Acid plant operating costs (Opex).
The Isophthalic 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 Isophthalic 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 Isophthalic 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 Isophthalic acid recovery; and (3) Purification.
Oxidation. m-Xylene is mixed with acetic acid solvent and a catalyst solution and then fed to the oxidation reactor. In the reactor, m-xylene is oxidized to isophthalic acid and most of the product generated is precipitated. Unreacted m-xylene, acetic acid and water formed are partially vaporized and sent to a scrubber column downstream for the recovery of the acetic acid and m-xylene. The residual gas from the scrubber is sent to a combustion unit, where volatile organic compounds are oxidized before disposal.
Crude isophthalic acid recovery. The crude isophthalic acid (CIA) slurry from reactor passes through a crystallization step, then it is centrifuged and dried. Solvent streams recovered from the Scrubber and the CIA drying areas are fed to a solvent & water recovery step before it is recycled to the oxidation reactor. The dry CIA obtained is subjected to further purification steps, since it still contains impurities that make it a product not acceptable in the polyester industry.
Purification. The CIA 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 is subsequently centrifuged for the separation of PIA crystals from the mother liquor. Part of the liquor is reused as solvent in the hydrogenation step and part of it is sent to a distillation column to recover dissolved PIA, which is recycled back to the oxidation reactor along with the hydrogenated compounds, so that they are converted to isophthalic acid. Finally, the PIA wet cake is dried and PIA product is obtained.
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Content Highlights
Plant Capital Cost Summary
Summary outlining the capital cost required for building the Isophthalic 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 Isophthalic 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 Isophthalic 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 Isophthalic 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 Isophthalic Acid Production Cost Reports
Crude Isophthalic Acid Production
This study concerns Isophthalic Acid production from m-xylene using a typical liquid-phase oxidation process. This report comprises m-xylene oxidation and crude Isophthalic Acid recovery, but does not include a section for Isophthalic Acid purification via hydrogenation. Crude Isophthalic Acid is the end-product of this process.
Details: 120 kta United States-based plant | Q3 2024 | 107 pages | Issue B | From $799 USD
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