PROCESS OPTIMATION AT CONDENSATE STRIPPER REBOILER TO REDUCE ETHANE CONTENT AT NGL PRODUCT AND REDUCE FLARED GAS AT FIXED PRODUCTION UNIT FOR PROPANE LPG PRODUCTION

• Main Author: Ekawati
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54678
• Institution: Institut Teknologi Bandung

ABSTRACT PROCESS OPTIMATION AT CONDENSATE STRIPPER REBOILER TO REDUCE ETHANE CONTENT AT NGL PRODUCT AND REDUCE FLARED GAS AT FIXED PRODUCTION UNIT FOR PROPANE LPG PRODUCTION oleh Ekawati NIM : 23015021 (Master’s Program in Chemical Engineering) A multinational gas company operating at Sumatra Island is processing 260 MMscfd of natural gas to produce around 110 MMscfd of gas sales and 26,000 bpd of NGL products. The purpose of this study is to optimize the operation in order the C2 / C3 ratio of NGL products does not exceed 2.0%, in accordance with the technical specifications required for NGL products. Prior to optimization, the C2 / C3 ratio of NGL products was 4.95%. The constraints to be considered in optimization are the maximum gas flow rate of 260 MMscfd to LP Inlet Compressor (K-201A / B / C), maximum gas flow rate of 177 MMscfd on CO2 removal unit, maximum 37,0% CO2 content at CO2 removal, and pressure on the Condensate Stripper column does not exceed 270 psig. Optimization is done by changing the operating pressure on Condensate Stripper column (C-201), temperature on Pretreament Chiller (E-103) and temperature on Condensate Stripper Reboiler (E-106). Optimization results showed that optimum conditions were achieved when the operating pressure on the Condensate Stripper column (C-201) was changed from 250 psig to 267 psig, the temperature at Pretreatment Chiller (E-103) changed from 65oF to 70oF and Condensate Stripper Reboiler (E-106) changed from 245oF to 267oF with these optimum condition, the C2 / C3 ratio of NGL products has been reduced to 1.38% (simulation), 2.0% (actual). Process optimization has been succeeded in lowering the flared gas in Fixed Platform Unit from 5 MMscfd to not exceed 1 MMscfd.