Pra Rancangan Pabrik Metil Merkaptan dari Metanol dan Hidrogen Sulfida dengan Penambahan Recycle Dimetil Sulfida melalui Proses Kontinu dengan Kapasitas Produksi 29.000 Ton/Tahun

Abstract

Methyl mercaptan is a chemical for which the supply is insufficient to meet domestic needs in Indonesia, necessitating imports from other countries. It is utilized in large quantities as a synthesis compound in various industrial processes. Methyl mercaptan can be applied in the agricultural, petrochemical, mining, and polymer industries. The preliminary design process for this methyl mercaptan plant employs a continuous process, achieving a conversion rate of up to 95% and utilizing raw materials that are more affordable and readily available in Indonesia. This process also incorporates recycled dimethyl sulfide to enhance the yield of methyl mercaptan products. The proposed methyl mercaptan plant is planned for establishment in Penajam Paser Utara Regency, East Kalimantan, covering an area of 18,600 m² with a production capacity of 29,000 tons per year. The requisite raw materials for achieving the annual production capacity include 2,569.554 kg/hour of methanol and 2,307.599 kg/hour of hydrogen sulfide. The plant will operate 24 hours per day, 330 days per year. The planned form of organization of this company is Perseroan Terbatas (PT) with a line and staff organizational structure, as well as a total of 100 employees. The establishment and operation of the plant will require a total investment capital of Rp577,217,248,635.88 and total production costs of Rp303,596,629,649.52 with projected annual sales at Rp475,132,384,465.20, generating a net profit of Rp111,025,249,427.04. Based on the feasibility analysis, this plant has a Profit Margin (PM) of 23.37%, Break Even Point (BEP) of 40.69%, a Return On Investment (ROI) of 19.23%, a Pay Out Time (POT) of 5.20 years, a Return On Network (RON) of 32.06%, and an Internal Rate of Return (IRR) of 27.79%. The results of the economic analysis indicate that the preliminary design of methyl mercaptan plant from methanol and hydrogen sulfide with the addition of recycled dimethyl sulfide through a continuous process is feasible for establishment.