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All Journal CHEESA: Chemical Engineering Research Articles Jurnal Pengabdian Mitra Indonesia
Rahmatullah
Universitas Sriwijaya
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Catalyst Losses and Air Flow Rate Effect on Cyclone Efficiency at Residue Fluidized Catalytic Cracking Unit Rizka Wulandari Putri; Umi Sarah; Ali Hanif; Rahmatullah; Selpiana; Muhammad Haviz
CHEESA: Chemical Engineering Research Articles Vol. 8 No. 1 (2025)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v8i1.22520.55-62

Abstract

Residue Fluidized Catalytic Cracking Unit (RFCCU) in the oil and gas industry is equipped with a regenerator that uses a cyclone to separate solid catalyst from reaction gases. Oxidation gases rise to the top of the regenerator before entering the cyclone stage. The cyclone inlet velocity depends on factors such as Main Air Blower (MAB) flow, dilute phase temperature, and dense bed temperature. Therefore, this study aimed to determine the effect of catalyst losses and combustion air flow rate on cyclone efficiency of RFCCU. The efficiency was determined simply by calculating catalyst losses compared to the catalyst inlet. The results showed that the dilute phase and dense bed temperature parameters had an indirect influence on cyclone inlet velocity. Furthermore, the separation efficiency of the device was 88% with 12 % catalyst loss by limiting the combustion air flow rate to a maximum value of 1,559 t/d. These limits should be met to prevent cavitation and reduce cyclone efficiency.
Improving the Knowledge of Tanjung Bubuk Community at Palembang Regarding Plastic Biocomposites from Plastic Waste-Kapok Fiber Rahmatullah; Rizka Wulandari Putri; Prahady Susmanto; Harry Waristian; Alek Al Hadi; Muhammad Rendana; Selpiana
Jurnal Pengabdian Mitra Indonesia Vol 2 No 2 (2026): Mei 2026
Publisher : Mitra Akademia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67380/jpmina.v2i2.34

Abstract

Plastic biocomposites play a significant role in reducing environmental impacts as an alternative to conventional plastics due to their more readily biodegradable nature. Plastic biocomposites can be made using a mixture of conventional plastic waste and kapok fiber through certain stages. The purpose of this community service is to increase public knowledge about how to process plastic waste and kapok fiber as raw materials for plastic biocomposites. Data collection techniques were carried out by providing an explanation of the procedure for making plastic biocomposites, followed by filling out a questionnaire about the level of understanding of the material provided. Based on the results of the survey through filling out the questionnaire before and after the activity was carried out, many residents did not know what plastic biocomposites were and only learned and understood after the activity was carried out.
Co-Authors Alek Al Hadi Ali Hanif Harry Waristian Muhammad Haviz Muhammad Rendana Rizka Wulandari Putri Selpiana, Selpiana Susmanto, Prahady Umi Sarah