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Studi Kasus Pengaruh Perbedaan Spesifikasi Fuel Gas terhadap Kinerja Pembakaran Thermal Oxidizer Unit di PT X Muhammad Fiqih Alif Utama; Ratni Dewi; Sariadi Sariadi
Jurnal Teknologi Vol 23, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i2.4334

Abstract

Fuel gas is a term used by the industry to refer to fuel in physical form or gas form. The type of fuel used in the thermal oxidizer at the Sulfur Recovery Unit (SRU) plant is fuel gas. The thermal oxidizer is a device that functions to oxidize residual H2S, elemental sulfur, and CO2 derived from the sour gas purification process. Currently, the reliability of the thermal oxidizer in operation needs special attention by management and the operations team because the ability of the refractory in the Thermal Oxidizer unit to maintain combustion heat is not optimal and stable so the combustion heat has touched the thermal oxidizer at several points to cause cracks and leaks. The purpose of this study is to analyze the effect of differences in fuel gas specifications on combustion performance and heat energy formed in the thermal oxidizer unit, to analyze the effect of differences in fuel gas specifications on increasing the operating temperature and reliability of the thermal oxidizer and to analyze the impact of the risk of implementing different gas usage on operations at the SRU plant. The method used in the research is causal comparative where observations are made of data from factors that are thought to be the cause as a comparison of differences in the use of fuel gas. In this study LP fuel gas is the best fuel usage option because it is more efficient and controlling the risk level can be done optimally with the use of LP fuel gas.
Pembuatan Pestisida Nabati dari Daun (Balakacida, Serai dan Sirsak) dengan Perbandingan Penambahan Surfaktan dan Tanpa Surfaktan Dinda Amalia; Sariadi Sariadi; Zulkifli Zulkifli
Jurnal Teknologi Vol 23, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i2.4471

Abstract

Production of vegetable pesticides from leaves (lemongrass, balakacida, and soursop) with a ratio of surfactant addition and no surfactant is carried out by liquid-solid extraction. This research aims to influence the effect of the use of leaf types and the use of surfactants and without surfactants with differences in maceration time on the quality of the vegetable pesticides produced. The research method was carried out by maceration extraction which would release flavonoid compounds and a mortality test was carried out on black ants (Dolichoderus thoracicus). The research results obtained from the three raw materials, namely balakacida leaves with the addition of surfactant, were the best results which desired to achieve a lethal dose (LD 100) with all test ants dead, whereas, without the addition of surfactant, it only reached the middle lethal dose (LD 50). As the maceration time increases, the number of ant deaths increases. The characteristics of vegetable pesticides produced from flavonoid levels have a positive correlative relationship to the mortality of black ants (Dolichoderus thoracicus). So what was obtained in the test for flavonoid compounds produced an orange/yellow color and there were functional groups OH, C-H, N-O, N=C=S, and C=C.
Co-Authors Dewi, Ratni Dinda Amalia Muhammad Fiqih Alif Utama Zulkifli Zulkifli