Download presentation
Presentation is loading. Please wait.
1
Biodiesel Feed Stock, Production Technology
2
BIODIESEL CONCEPT Diesel (Petroleum derived) Oil When Substituted Partly or Wholly by a Liquid Fuel Derived from Renewable Resource Materials Rudolf Diesel First Demonstrated in 1900 that Renewable Resource Material like Groundnut (Peanut) oil as a Fuel in Diesel Engine in Place of Petroleum Diesel Without any Problem.
3
Biodiesel The present Concept Conversion of Oils/Fats to Alkyl Esters of Monohydric Alcohols to overcome Problems of High Viscosity, High Boiling Point and Reactivity make Biodiesel is Now Defined Exclusively as the ‘Monoalkyl’ Esters of the Long Chain Fatty Acids Derived from the Oils/Fats of Vegetable and Animal Origins that Fulfill almost all the Requirements of Petroleum-Derived Diesels.
4
BIODIESEL FEEDSTOCK (A) Oils & Fats of Plant And Animal Origins (B) Refinery byproducts like (1) Fatty Acid Distillates (FADs) (Palm FADs). (2)Acid Oils (Soyabean, Rice bran, Coconut, Mustard). (C) Used Oils Like Frying Oils.
5
CPO MILLING
6
TRADITIONAL COCONUT OIL PRODUCTION
8
separations Triglyceride
9
LABORATORY SCALE PRODUCTION
10
ESTERIFICATION Alcohol + Acid Ester + Water The reaction of fatty acid with an alcohol produces ester and water. The esters can be separated from the water because they have low solubility in it. Esters can be produced under conditions of low or high temperature and the crude product is distilled, bleached and deodorised as appropriate before a pure ester is produced.
11
Chemical catalyst process Biocatalyst process CATALYST
12
One Step Process with a Base Catalyst like Sodium Hydroxide or Potassium Hydroxide or their Alkoxides when the Oils/Fats are Refined (RBD). Two-Step Process on oils Containing FREE FATTY ACIDS (I) Esterification with Conc. H 2 SO 4, H 3 PO 4 (ii) Transesterification with a base catalyst NaOH, KOH or High Pressure Esterification and Alcoholysis for straight way conversion to Biodiesel. Chemical Catalyst Process
13
One-Step Biocatalyst Process for Biodiesel Production Simultaneous Esterification And Transesterification (Alcoholysis) of Triglyceride Oils. Esterification Lipase R.COOH + MeOH R.COOMe + H 2 O
14
CH 2 OCOR CH2OH Lipase CHOCOR + 3MeOH 3 R.COOMe + CHOH CH 2 OCOR CH2OH TRANSESTERIFICATION Lipase Candida Cylindraceae, Candida Rugosa, Candida Antartica & Lipase 3A (1,3-specific lipase)
15
A. Single Stage or Direct Transesterification (Alcoholysis) Process. Refined or Neutral Oil (< 1.5% F.F.A.) + Alcohol (Methanol) 1.6-2 Times Chemical Process For Biodiesel Production
16
Theoretical Amount Base Catalyst 50 0 C-70 0 C KOH OR NaOH 4-6 Hr. 0.3-1.5% or NaOMe 0.5% or Less ALKYL ESTER PRODUCT Necessary Post-Treatment BIODIESEL (95% yield of 97% purity)
17
1 st STAGE ESTERIFICATION PROCESS Acid Catalyst + Alcohol (1.6-2 Times (Conc. H 2 SO 4 the Th. Amount) 0.1-1% on F.F.A100 0 -120 0 C/10-12 hrs. BasisOr 60 0 C/4-5 hrs.Or 35 0 C/2 hrs.1-2 hrs. Ester Phase Glycerol Phase B. TWO-STAGE (COMBINED ESTERIFICATION AND TRANSESTERIFICATION) PROCESS.
18
2 nd STAGE TRANSESTERIFICATION PROCESS ESTER PHASE BaseReflux Or at 60 0 C CatalystFor 0.5-6hrs. Alkyl Ester Phase Glycerol Phase Purification Acidified Final Ester Biodiesel Glycerol Phase Acidic Esters Purification
19
AUTOCATALYTIC ESTERIFICATION PROCESS Acidic Oils (>5% FFA) Or Acid Oils (>50% FFA) Esterifying Agent 180 0 C-220 0 C Like Glycerol 2-6 Torr, (Theoretical Or 6-12 hrs 20-60% Excess Over theoretical Neutral Oil Transesterification Process Methyl Ester Glycerol Purification (Recycled in the Esterification) Biodiesel
20
Oil + Methanol (1:42 ) 300-500 0 C300 Atmospheres Times 3-4 minutes Methyl Esters (98% Conversion) TRANSESTERIFICATION WITH SUPERCRITICAL METHANOL FOR BIODIESEL PRODUCTION
21
Biodiesel By Blending of Vegetable Oil With Short Chain Alcohol and an Amphiphilic Compound Vegetable Oil 1-ALKANOL Methanol Or Ethanol Stable Solution (Liquid) (With Viscosity Sufficiently low for use as Diesel Fuel)
22
Linolenic Acid 1.0 Diglycerides> 0.25 Triglycerides> 0.25 Free Glycerol< 0.02 Total Glycerol< 0.38 Alkali Metals< 5 ppm Alkali Earth Metals< 5 ppm Phosphorus Content< 10 ppm BIODIESEL STANDARDS
23
FEEDSTOCK MINYAK NABATI KW 1 (FFA <5%) MINYAKNABATI KW 2 (FFA > 5%, <20%) MINYAK NABATI KW 3 (FFA>20, <70%) PFAD (FFA >70%) Esterifikasi Transesterifikasi PROSES KIMIA
24
150 o C > 100 – 130 o C 50 – 80 o C + Catalyst 30 – 50 o C + Enzyme Teknologi proses Process conditions High temperature Medium temperature Low temperature + Catalyst Low temperature + Enzyme METHANOL FEEDSTOCK GLYCEROL / WATER BIODIESEL
25
Examples (Batch Reaction) Oil FFA(%) Yield of Methyl Ester(%) Crude Palm Oil4.596 Crude Palm Stearin 3.898 Rapeseed3.295 Sunflower3.594 Coconut1.598 Palm Kernel3.298 Soya bean1.395 Corn9.696 Tallow 3.993
26
FUEL CHARACTERISTICS OF METHYL ESTERS OF VARIOUS VEGETABLE OILS CHARACTERISTICS TESTED METHYL DENSITY VISCOSITY CETANE HEATING ESTER 15 0 C 40 0 C NUMBER VALUE PALM OIL 0.872-0.877 4.3-4.5 64.3-70 32.4 MJ/L COCONUT 0.872 2.7 62.7 30.8 MJ/L
27
METHYL DENSITY VISCOSITY CETANE HEATING ESTER 15 0 C 40 0 C NUMBER VALUE RAPESEED (LEAR)0.8824.251.0-59.732.8MJ/L SUNFLOWER 0.885 4.0 61.2 32.8MJ/L SOYABEAN 0.880 4.0 45.7-56 32.7MJ/L TYPICAL DIESEL 0.830-0.840 2.0-3.5 51.0 35.5MJ/L FUEL
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.