Dear Whom it may concern, We are Tavorn Tractor & Construction Ltd, Part. We are doing for the Project Used oil re-refinery project project (E-0702) in Thailand. We interest in your product and your technology for the used oil purification unit. The preliminary information are as following 1. The capacity : 15,000 liter/day ( 2,000 liter/hr) 2. Raw material : Spent lube oil is generally a mixture of different types and grades of used lube oils, coming from automotive engine crankcases and from various industrial utilizations. These contaminants can be generally summarized as follows: 1. Free and emulsified water (1-10% wt) 2. Light hydrocarbons (1-10%wt) like gasoline, gas oil, 3. Dust, 4. Metals (iron, copper, zinc, lead, calcium, phosphorus), resulting from engine wear and corrosion, gasoline additives, lube oil additives, 5. Halogenated compounds, originated from solvents, 6. Glycols, resulting from anti-freezing compounds used in engine cooling circuits, 7. Products of thermal degradation, like carbon, unsaturated hydrocarbons, polymers, asphaltenes, 8. Various compounds from lube oils additives packages (viscosity index improver, pour point depressant, detergents dispersant, antioxidant, etc) like synthetic polymers (mainly polymetacrylates and polyacrylates), phenols, phenates, sulfonates, phosphonates and tiophosphonates, amines 3. Process required: 1. To Pre-treatment and To remove water, gasoline 2. To remove gas oil and light hydrocarbon by Vacuum distillation and to recover base lube oils, eliminate heavy residues. 4. Process Description: The re-refining process should be consists of 1. Pre-treatment unit 2. Water & Low boiling point hydrocabon unit To remove water, gasoline 3. Vacuum Distillation by Thin Film Evaporator The process consists of the following basic steps each destined to selectively remove one or more categories of contaminants and recover a high quality lube oil product: a) Pre-treatment: including preheating, chemical injection and dehydration to remove water, gasoline, light contaminants (solvents. Glycols, lighter organic) and separate heavy contaminants which remain in suspension in the oil, b) Gas oil removal: to separate gas oil from the lube oil for flash point correction and recovery of a valuable gas oil fraction, c) Vacuum distillation by Thin Film Evaporator: to separate lube oil components from “heavier than” contaminants. 5.0 Product and By-product Characteristics: 5.1. Re-refined Lube Oils The characteristics of the re-refined lube oils are shown here below and compared with those of the virgin lube oils. The quality of the re-refined lube oils Re-refined Lube Oils 1 Density at 15ºC 0.890 2 Viscosity at 40ºC, cst 96-105 3 CAR, wt% 0.07 4 Colour 2.5 5 TAN, mg KOH/g 0.01 6 Flash point, ºC 240 Metals (ppm) 7 Ba <2 <2 8 Ca <1 <1 9 Pb <2 <2 10 Zn <1 <1 11 Ph <5 <5 12 Cr <0.5 <0.5 13 Fe <0-5 <0-5 5.2. Gasoil: (Main required product) 1 Density at 15ºC 0.86 2 Viscosity at 40ºC 3-5 3 FBP atmospheric distillation, ºC 360 4 Flash point, ºC 70 5 LHV, Keal/Kg 10.000 6 Cetane index 50 Metals: 7 V ppm 0.5 8 Mg ppm 10 9 Pb ppm 6 10 Zn ppm 1 11 Ph ppm 80 12 Cr ppm 0.59 13 Fe ppm 8 5.3. Vacuum Residue: 1 Density at 15ºC 1.0-1.04 2 Viscosity at 40ºC 70.000 at 120ºC 4.000 3 Sulphated ash content, % wt 10-12 4 Sulphur, % wt 1-2 5 Penetration, mm/10 at 25C 200-400 6 Softening point, C 15-20 7 LIVE, Kcal/Kg 9.000 Metals: 8 V ppm 2 9 Cr ppm 36 10 Pb ppm 2529 11 Zn ppm 3500 12 Ph ppm 2644 13 Mg ppm 332 14 Fe ppm 652 6.0 Spent Lube Oil Characteristics: Re-refinability test (Drop test, Lux test, Chlorine Test): Acceptable 1 Specific Gravity at 15ºC 0.905 2 Viscosity at 40ºC 100.0 cSt At 100ºC 12.5 cST Composition %wt 1 Water 5.0 2 Light Hydrocarbons plus gas oil 7.0 (Cut up to 370ºC) 3 Lube oil Fraction 78.0 4 Residue 10.0 5 Total 100.0 Characteristics of Lube Oil Fraction ASTM Vacuum Distillation Curve % Vol Temp. (Cº) (Corrected at atm pressure) 1 IBP 365 2 5 385 3 10 400 4 20 420 5 30 435 6 40 445 7 50 440 8 60 470 9 70 485 10 80 500 11 90 515 12 EBP 550 § Specific Gravity, at 15ºC 0.89 § Viscosity at 40ºC, cst 80 At 100ºC, cost 9 1 Sulphur, % wt 0.8 2 TAN, mg KOH/g 1.5 Therefore, we would like you to quote the price of Thin film evaporator and related equipment that describe in attchment. Please be quoted the price as following structure 1. Price breakdown by equiment 2. Manufacture & Delivery schedule 3. Document and information that to be provided 4. Payment method 5. Other Please be replied within 23 November' 2007 Best regards, Ms.Ratchadaporn Yodthong Project Engineering Manager(PEM) Tavorn Tractor & Construction Ltd, Part. +6689-223-7771, +6689-177-0009, +6689-449-4200 tavorntractor@en-thai.com http://tavorntractor.en-thai.com