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All Journal Jurnal Penelitian Inovatif Nucleus Journal PATRIOTIK: Jurnal Inovasi dan Pemberdayaan Masyarakat
Zulkipli, Rohiman Ahmad
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Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Public Health Social Sciences Other

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Analisis Selisih Perhitungan Muatan Kargo High Pressure Propylene Menggunakan Fishbone Analysis pada Industri Petrokimia Zulkipli, Rohiman Ahmad; Ikhsandy, Ferry; Yahdiyan, Muhammad Yasyfi
Jurnal Penelitian Inovatif Vol 5 No 2 (2025): JUPIN Mei 2025
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54082/jupin.1526

Abstract

Selisih perhitungan muatan antara angka kapal (ship figure) dan angka darat (shore figure) kerap terjadi dalam proses bongkar muat di industri petrokimia, khususnya pada penanganan kargo High Pressure Propylene. Ketidaksesuaian ini dapat menimbulkan ketidakefisienan operasional serta potensi kerugian finansial. Penelitian ini bertujuan untuk menganalisis perbedaan kuantitas muatan selama proses discharge dan mengidentifikasi strategi untuk meminimalkan selisih tersebut. Metode yang digunakan adalah metode kuantitatif dengan membandingkan data ship figure dan shore figure dari aktivitas bongkar muat. Hasil penelitian menunjukkan adanya selisih sebesar 6,388 metrik ton. Temuan ini menekankan pentingnya pengambilan data yang akurat, pengendalian tekanan, serta kestabilan kapal selama proses bongkar, guna meningkatkan ketepatan pengukuran dan menjamin keandalan proses transfer kargo di industri petrokimia.
Pengelolaan Sampah Plastik Dengan Mesin Pencacah di Infrastruktur Industri Pengolahan Sampah Terpadu Asari Rahayu, Puji; Tutuka, Rachmadi; Pasaribu, Monita; Jerry, Jerry; Ikhsandy, Ferry; Luthfi, Muhammad Zulfikar; Betariani, Khairunisa; Nury, Dennis Farina; Zulkipli, Rohiman Ahmad; Nugroho , Muhammad Erwin Cahyo
PATRIOTIKA: Jurnal Inovasi dan Pemberdayaan Masyarakat Vol 1 No 1 (2025): May 2025
Publisher : Universitas Nahdlatul Ulama Sumatera Utara

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Abstract

The increasing problem of plastic waste has become one of the biggest environmental challenges in the world today. To overcome this problem, the development of plastic shredding technology is an effective solution to support the plastic recycling process. This study aims to design and develop an efficient and environmentally friendly plastic waste shredding machine, which is able to reduce the volume of plastic waste and facilitate the recycling process. The research methodology includes identifying user needs, literature studies, developing design concepts, detailed design using software, prototyping, and testing and evaluating machine performance. The designed shredding machine has a shredding capacity of 50 kg/hour with lower energy consumption compared to existing commercial shredding machines. Consistent machine testing in producing plastic flakes with uniform sizes, which are suitable for further recycling processes. Performance analysis relates to machines that are able to process various types of plastic, including PET, HDPE, and PP, with high shredding efficiency. The developed plastic shredding machine is able to provide a practical solution for plastic waste management by optimizing the recycling process and reducing negative impacts on the environment. The development of this plastic shredding machine is expected to contribute significantly to efforts to reduce plastic waste and support environmental sustainability.
Pengaruh Kecepatan Screw dan Feeder pada Mesin Extruder terhadap Karakteristik Hasil Bijih Plastik Muhammad Erwin Cahyo Nugroho; Tutuka, Rachmadi; Ahmad Zulkipli, Rohiman
Nucleus Journal Vol. 4 No. 1 (2025): May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/nucleus.v4i1.4102

Abstract

The problem of plastic waste, especially from PET bottles, continues to increase and prompts the need for innovation in processing waste into high-value products. One method used is the extrusion process, which can produce plastic ore from recycled plastic waste. This study aims to examine the effect of variations in screw speed and feeder speed in extruder machines on the characteristics of plastic ore yield. The material used was used PET plastic bottle flakes, while the cutting speed was kept constant throughout the process. Evaluation was conducted based on the ratio between screw and feeder speed to see the impact on the homogeneity, size, and shape stability of the plastic ore produced. The data combination with the range at screw speed (Ns) = 25 rpm; feeder speed (Nf) = 10 rpm appeared repeatedly and showed stable performance based on the observation test. This combination is most likely the optimal operating parameter. At a stable screw/feeder ratio of 2:1 to 2.5:1, the ore yield is more uniform and dimensional consistency is higher. The calculation results show that the ideal cutting speed is 132 rpm. The current extruder machine tool design set at only 140 rpm constant speed is too fast for this condition. Screw speed and feed rate affect the mass flow rate and melting temperature of the material. The cutting speed must be matched with the material output rate from the extruder to produce a consistent size of plastic ore. The results show that a balanced speed ratio provides a uniform size distribution and a more stable ore shape, while speed imbalance can give rise to product defects such as bubbles, rough surface, and non-uniform shape. The results of this research discussion show the importance of proper process parameter settings in extrusion systems to produce high-quality plastic ore from recycled materials.
Evaluasi Performa Furnace EDC (Ethyl Dichloride) Cracker di VCM (Vinyl Chloride Monomer)-1 Plant Ahmad Zulkipli, Rohiman; Rachmadi, Rachmadi; Muhammad , Yafi Fadhlurohman
Nucleus Journal Vol. 4 No. 1 (2025): May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/nucleus.v4i1.4106

Abstract

Furnaces in the production of VCM (Vinyl Chloride Monomer) must be operated with optimal efficiency to maximize production and minimize the formation of impurities (coke). Furnace efficiency is evaluated based on the ratio of heat generated from fuel combustion to heat absorbed by the EDC (Ethyl Dichloride) fluid, and is a key indicator of operational feasibility. In addition, the pressure difference of the inlet convection and outlet radiant sections is used as an additional parameter, where an increase in this value reflects the accumulation of deposits in the tubes. If the efficiency drops below the minimum operating conditions or the pressure difference between the convection inlet and outlet radiant section exceeds 4 kg/cm2G, the furnace is considered unfit for operation and decoking must be performed, which will increase operating costs. During the 12 days of monitoring (measurement every 8 hours), the average efficiency was 85.370%, the highest value was 87.348%, and the lowest value was 83.764%. The efficiency values tended to fluctuate and were below the minimum operating condition (88.898%). This is due to changes in operating conditions and manual control. Therefore, although the pressure difference is still below the threshold of 4 kg/cm2G, the furnace is considered unfit for operation.
Co-Authors Betariani, Khairunisa Dennis Farina Nury Ferry Ikhsandy Jerry, Jerry Monita Pasaribu Muhammad , Yafi Fadhlurohman Muhammad Erwin Cahyo Nugroho Muhammad Zulfikar Luthfi Nugroho , Muhammad Erwin Cahyo Puji Rahayu Rachmadi, Rachmadi Tutuka, Rachmadi Yahdiyan, Muhammad Yasyfi