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Analisa Pengaruh Steam Injection terhadap Overload Continuous Settling Tank (Studi Kasus di PKS XYZ) St Nugroho Kristono
JURNAL CITRA WIDYA EDUKASI Vol 10 No 1 (2018): JCWE Edisi April 2018
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses the use of steam injection in oil separation process on continuous settling tank (CST) at clarification station, in the palm oil mill (POM) XYZ. Oil that spills on CST, among the causes is the activation of steam injection and is related to the capacity of the CST. The condition will result in oil losses at the clarification station and will affect the decrease of oil extraction rate and the loss for the company. The purpose of this research is to know the optimum steam injection activation time to meet CST level during normal running process. This research was conducted for 1 month and 14 days starting on May 1st to June 14th, 2017 at POM XYZ. Data collection is done by observation and practice directly in the field. Based on the data already obtained, then the analysis of the measurement data will be further processed using a simple mathematical model. The result showed that the optimal steam injection activation time to meet the CST level during normal walking was 2.95 minutes. The injection will fill in the free space on CST, which is 10.0097 m3.
Rancang Bangun Incline Vibrating Screen Pengolahan Minyak Kelapa Sawit Kapasitas 2 Ton/Jam St Nugroho Kristono
JURNAL CITRA WIDYA EDUKASI Vol 9 No 3 (2017): JCWE Edisi Desember 2017
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

The process of purifying the palm oil from the press, firstly done filtering process. Filtering process is an important process to obtain the smooth and soft results of a product. Several models have been developed for the filtering of liquid, solid, stone, mineral, and so forth. It has been done by several companies for its processing. The purpose of this research is to: 1) know how to do the design on inclined vibrating screen; and 2) know what parameters are needed to design an incined vibrating screen build. Research done by conducting literature study first. Next, determine the model and capacity of vibrating screen to be made. The next stage is data collection and modeling tool design. Next calculate and analyze capacity requirements, structural strength and vibration. The results showed that: 1) designing inclined vibrating screen constructions to be considered several things, namely: media/capacity size and shape, density, moisture, size distribution, and construction; and 2) parameters to note is the probability to filter for 0.999992; filtering performance of 0.01704 m/s²; depth of filtration of 0.5 m; spring stiffness of 2,000 kg/cm; with a spring and wire diameter of 14.5 mm and 2.125 mm.
Analisa Perpindahan Panas Paving Block Terbuat dari Abu Boiler Sisa Pembakaran Serat dan Cangkang Kelapa Sawit St Nugroho Kristono
JURNAL CITRA WIDYA EDUKASI Vol 9 No 2 (2017): JCWE Edisi Agustus 2017
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Paving block of boiler ash is a building material product made from residual burning of fiber and palm shells in boiler, as well as manually stirred cement and then printed. Paving block is used as cover or hardening of soil surface that can absorb water. There is standardization of paving block strength. The purpose of this research is to know the amount of heat transfer that occurs in paving block made from burning residue in boiler at palm oil mill and heat transfer in ordinary paving block. There are 4 different compositions between boiler ash and cement in the manufacture of the paving block, ie: 1:1; 1:3/4; 1:1/2; and 1:1/4. The density of paving block from boiler ash is 1,175.26 Kg/m³, while the typical paving block weight is 2,110.10 Kg/m³. The thermal conductivity of the paving block is 0.72 W/m.K. Different heat transfer values ​​are obtained between paving block of boiler ash with regular paving blocks. For paving block of boiler ash with composition 1:1; 1:3/4; 1:1/2; and 1:1/4 with hot temperature (Tp) 200⁰C and cold temperature (Td) 32⁰C obtained heat transfer value (q) of 48.98 W. While the usual paving block with temperature 200⁰C and cold temperature (Td) 33⁰C obtained heat transfer value (q) of 37.36 W. Maximum test temperature of 200⁰C does not change the structure and dimensions of the paving block of boiler ash.
Pengukuran Efektivitas Mesin Produksi Besi Bondeck pada Industri Manufaktur dengan Overall Equipment Effectiveness St Nugroho Kristono; M Hudori
JURNAL CITRA WIDYA EDUKASI Vol 10 No 3 (2018): JCWE Edisi Desember 2018
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Effectiveness is a measure of the comparison of the quantity of product produced over a period of time to a theoretical capacity, which shows the productivity of the machine. The success of the maintenance system with this TPM can be measured using Overall Equipment Effectiveness (OEE), which will show how capable a machine is to produce a quality product compared to the must. The purpose of this research was to determine the OEE value of bondeck production machine. This research was conducted in January – March 2018 in a manufacturing company located in Bekasi. The research population is the entire production on the machine, while the sample is production during January – March 2018. Data collection is done by means of observation, interview and company document tracking. Data processing is done with the Nakajima formula. The result of the research showed that the OEE value of the bondeck production machine was 53.29% in January; 48.23% in February; and 58.88% in March. This means that the company is only able to produce products from these machines, about half of the total product they are supposed to.
Pengendalian Throughput Pabrik Kelapa Sawit Menggunakan Individual Moving Range (I-MR) Chart St Nugroho Kristono; M Hudori
JURNAL CITRA WIDYA EDUKASI Vol 11 No 1 (2019): JCWE Edisi April 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses the control of throughput in a palm oil mill (POM). The purpose is to find out how the POM throughput conditions and how the losses due to these conditions. This research uses the individual moving range (I-MR) Chart method. Testing is done first with MR-Chart, and revisions will be made if there is an out-of-control condition. Next, testing of throughput conditions with x-Chart will be conducted. If an out-of-control condition occurs, a process capability measurement (Cp) will be carried out. The result showed that the POM studied had poor throughput conditions. To make the existing conditions seem good or very good, tolerance is needed that is beyond the limit of reasonableness. This condition resulted in considerable losses for the company because it had to spend operational cost because there were additional operating hours that should not have happened, even though there were no FFB processed during these additional hours.
Pembuatan Briket dari Fiber Kelapa Sawit Berperekat Tepung Tapioka dengan Metode Pembakaran Biasa (Karbonisasi) Istianto Budhi Rahardja; Cenda E. Hasibuan; Yudi Dermawan; St Nugroho Kristono
JURNAL CITRA WIDYA EDUKASI Vol 13 No 1 (2021): JCWE Edisi April 2021
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

This research discusses briquettes making from palm fiber with tapioca starch adhesive by using the conventional burning method (carbonization). Briquettes can be used for household need as well as in other forms of alternative energy, and the alternative energy produced is expected to have quality and be made from renewable raw materials and have cheap economic value. Briquettes are solid fuel derived from organic waste. The purpose of this research was to determine the effect of multiple solvents on the physical properties and quality of the resulting briquettes. This research was conducted at the Chemical Laboratory of Palm Oil Polytechnic, Citra Widya Edukasi on 20202, 11th December – 2021, 9th August. The stages of the research ie: 1) cleaning and drying (12 hour oven at 105° C); 2) carbonization for ± 1.5 hours; 3) powder (sieve 60 mesh); 4) kneading 100 gr with 150 ml 200 ml and 300 ml solvent; 5) printing (paralon) D: 6.5 cm and h: 2.5 cm; and 6) testing of moisture content, ash content, burn time and burn rate. The result showed that in the 300 ml solvent, the resulting briquettes had a lower density than the other samples, and the weight of the briquettes produced in this sample was lighter, and also had large pores.
Co-Authors Cenda E. Hasibuan Istianto Budhi Rahardja M Hudori Yudi Dermawan