WP6 - Conceptual design of selected NTFP processes

O6.3. Process flow diagrams (PFD)



In this report, the overall configuration of the process is introduced. The extraction process consists of two main steps: pre-treatment and the main extraction process. In this process, annually three different products are extracted from three different plants, roseroot, maral root, and garden angelica. The total production capacity of the process plant is approximately 13 tons.

Comprehensive process flow diagrams are prepared for pre-treatment, supercritical CO2 extraction, and product and solvent recovery steps. The diagrams include process piping, main equipment, related control systems, outside-battery limit connections, and CO2 and co-solvent recycle streams. In addition, stream tables in process flow diagrams present the mass balance and operating information.

For safety reasons, the main production process is located inside an ATEX certified container with 40 m2 area. Based on the plant layout, the total process plant area including outside and inside battery limits is 600 m2.

 Download the report: O6.3. Process flow diagrams (PFD)


 O6.4. Engineering package for investment


In this report, the supercritical CO2 extraction process models are shown for each type of raw material. In the following, the operation is described based on the process flow diagrams. These diagrams are developed according to the simulation results in Aspen Plus.

Process design and simulation play an important role in equipment selection and design. After equipment selection, the process equipment sizing is carried out based on relevant literature and vendor data or using design software including Aspen Exchanger Design and Rating. For process safety analysis, HAZOP study is conducted for the supercritical CO2 extraction and product and solvent recovery steps. In this study, pressure, temperature, flow, and level are process pa-rameters selected for each node.

For enhancing the health and safety of employees at the production plant, the industrial hygiene is studied from three aspects: engineering solutions, work practice controls, and administrative controls. Finally, sustainability and environmental concerns are analyzed for process waste and vent streams. The supercritical CO2 extraction is a closed loop process, and most of CO2 and co-solvents are recovered and reused in the extraction step. Therefore, there are not significant greenhouse gas (GHG) emissions.

Download the report: O6.4. Engineering package for investment


WP6 Group of activities 6.5: Cost assessment


 This report covers the financial economic assessment of the process plant including fixed capital
investment (CAPEX), operating costs (OPEX), production costs, profitability and sensitivity analysis.
The equipment cost estimation is 1.1 M€, fixed capital investment estimation 5.1 M€, work-ing
capital 900 k€, and operating cost 3.1 M€/a. By adding up the fixed capital investment and working
capital, the total capital investment is 6 M€.

For profitability analysis, internal rate of return and payback period are analyzed. Payback period
is calculated to be around 3 years. Based on a 20-year plant lifetime, internal rate of return is
calculated to be 33.4 %. Sensitivity analysis is conducted for raw material and key product prices,
operational costs, and fixed capital investment. The costs assessment results suggest that the
production plant would be profitable.

This report also discusses the readiness of the process with six categories. The analysis shows
that the recommended process can attract potential investors.

 Download the report: Cost assessment


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