การผลิตและใช้ส่วนกลั่นกรดไขปาล์มที่ผ่านการเอสเทอริไฟน์บางส่วนโดยไม่ใช้ตัวเร่งปฏิกิริยาเป็นส่วนผสมดีเซล/ดีโซฮอล์ ; Production and Use of Partially Non-Catalyzed Esterified Palm Fatty Acid Distillate as Diesel/Diesohol Extenders

วิศวกรรมศาสตรมหาบัณฑิต (วิศวกรรมเครื่องกล), 2565 ; This research is to study the improvement of liquid properties of palm fatty acid distillate (PFAD), a cheap by-product of the edible palm oil industry by partial esterification without catalytic. The product is partially esterified palm fatty acid distillate with a high ester content (≥50wt.%) for use as a diesel blend/diesohol. This research consists of 2 parts, which Part 1 : The construction of the batch reactor and production of partially esterified palm fatty acid distillate. The batch reactor consists of 4 units: 1) reactor unit, 2) heating unit, 3) cooling unit, and 4) storage unit. In the production of partially esterified palm fatty acid distillate from the esterification reaction (Alcohollysis) at themolar ratio at PFAD : ethanol/butanol are 1:0.6, 1:1 and 1:2, reaction time 60 min, temperature 275°C and pressure 70 bar. it was found that the partially ethanolized palm fatty acid distillate (PEPFAD) content of ethyl ester (biodiesel) were 53.2 wt%. 71.8 wt. %. and 88.8 wt%. respectively, the remaining free fatty acid were 44.5 wt%. 26.9 wt% and 10.0 wt%, respectively; partially butanolized palm fatty acid distillate (PBPFAD) contains butyl esters (biodiesel) were 62.7 wt%. 78.4 wt%. and 93.2 wt%. Remaining free fatty acid were 35.5 wt%. 20.4 wt% and 6.0 wt. % respectively. Part 2 : The study of long-term phase behavior combined with liquid and flow properties of the blended fuel and preliminary engine testing that PEPFAD at ratios 1:0.6, 1:1 and 1:2 can be blended in CHSD-PEPFAD not more than 30 wt.%, 40 wt.% and 90 wt.%, respectively, in CHSD-PEPFAD-AhE/AhnB not more than 50 wt.%, 80 wt.% and 80 wt.% respectively. For PBPFAD at ratios 1:0.6, 1:1 and 1:2 can be blended in CHSD-PBPFAD not more than 40 wt.%, 50 wt.% and 90 wt.% respectively, in CHSD-PBPFAD-AhE/AhnB not more than 70 wt.%, 80 wt.% and 80 wt.% respectively. According tothe high speed diesel and diesel standards for agricultural engines of Thailand. A large number of samples were pass the ...