ACID GAS TREATMENT AND SULFUR RECOVERY

فایل شبیه سازی Aspen بر اساس SRI به همراه فایل pdf شرح فرآیند
This Aspen Plus model simulates of removing acid gases, H2S, CO2, COS, CS2, and mercaptans from gaseous process streams and the subsequent conversion of H2S to S for sale or disposal. The process is described in SRI’s PEP Report # 216, section 5.

References
PEP Report 216-sec 5

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2-ETHYLHEXANOL FROM N-BUTYRALDEHYDE (PEP Process Module, 29 Mar 2000)
فایل شبیه سازی Aspen بر اساس مجموعه SRI به همراه فایل pdf شرح فرآِیند

This Aspen model simulates the process for condensing n-butyraldehyde (NBAL) to 2-ethylpropylacrolein (2- EPA), and the subsequent reduction of 2-EPA to 2-ethylhexanol (2-EH). The condensation process chosen for evaluation is based on Davy McKee patents, with the caustic soda condensation catalyst included in the purification distillation. The hydrogenation process chosen for evaluation is a two-stage isothermal hydrogenation process. The primary stage is vapor-phase hydrogenation, and the second stage is liquid-phase hydrogenation.

References: PEP Report 24D. “2-ETHYLHEXANOL FROM N-BUTYRALDEHYDE”, section 6. By Thomas McVey, March 2000

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ACETIC ACID BY THE CHIYODA/UOP ACETICA™ PROCESS (PEP Process Module, 19 Aug 1999)
فایل شبیه سازی Aspen بر اساس مجموعه SRI به همراه فایل pdf شرح فرآِیند

This Aspen Plus model simulates the production of acetic acid by low pressure methanol carbonylation in the presence of a heterogeneous rhodium (Rh) catalyst and the promoter methyl iodide. It is intended to resemble the Chiyoda/UOP Acetica™ process, a novel heterogeneous methanol process for the production of acetic acid. This technology is based on a heterogeneous Rh catalyst in which the active Rh complex is chemically immobilized on a polyvinylpyridine resin. In the Aspen Plus model, the plant (base case) is designed to produce 800 million lb/yr (363,000 t/yr) of acetic acid from methanol carbonylation. The process consists of both the carbonylation and purification sections. Results from the Aspen Plus simulation shows that the purity of acetic acid obtained is 98.4%. Vent gas (4,304 lb/hr) from two absorbers and heavy by-products (1,150 lb/hr) from the bottom of the heavy-ends stripper are sent to incinerator. The process also generates approximately 65,000 lb/hr of low-pressure (150 psig) steam that supplies a significant portion of the plant energy requirements.
References:Fong, W.S., Acetic Acid by Low Pressure Carbonylation of Methane with a Supported Rhodium Catalyst, PEP Review 88-3-4, Process Economics Program, SRI International, Menlo Park, California (February 1990)

Ma, J.J.L., et al., Acetic Acid by Low Pressure Carbonylation of Methane, PEP Review 78-3-4, Process Economics Program, Stanford Research Institute, Menlo Park, California (January 1980)
Takaoka, S., Acetic Acid and Acetic Anhydride, PEP Report 37A, Supplement A, Process Economics Program, Stanford Research Institute, Menlo Park, California (March 1973)

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Butadiene
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This Aspen Plus model simulates the butadiene recovery from steam cracker C4s using dimethylformamide (DMF) extractive distillation and the Nippon Zeon Process. A base-case plant with 49,000 Ton/yr Butadiene capacity is modeled.
References
Process Economics Program Report 35C, "BUTADIENE", April 1996

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