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Contents
1. INTRODUCTION
2. PROPERTIES OF MTBE
3. PRODUCTION OF MTBE
4. DISCUSSION
5. REFERENCES
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1. INTRODUCTION
1.1 MTBE
What’s MTBE??? In 1977- Clean Air Act allowed to be used in
gasoline In 1981 the US EPA allowed the blending MTBE up
to 11% V In 1988 extended the limit to 15 %V
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1. INTRODUCTION
1.2 DEMAND OF MTBE: B.Vietnam: -Using MTBE like environmentally superior
gasoline blending component -We’ve not had any production of MTBE plant yet
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2. PROPERTIES OF MTBE
1. Chemical physics properties
2. Applications
3. Advantage & Disadvantage
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2. PROPERTIES OF MTBE Click to edit text styles
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2.1 Chemical physics of MTBE
Methyl tert-butyl ether---MTBE MTBE is a volatile, flammable, and
colorless liquid that is sparingly soluble in water. It has a minty odor vaguely reminiscent of diethyl ether, leading to unpleasant taste and odor in water
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2.1 Chemical physics of MTBEAzeotropic point
Azeotropic mixture Temparature(C) Concentration of MTBE( %wt)
MTBE-Water 52.6 96
MTBE-MeOH 51.6 86
MTBE-MeOH(1MPa) 130 68
MTBE-MeOH(2.5MPa) 175 54
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2.2 Applications: Environmentally superior gasoline
blending component RON: 115-123 MON:98-105 Solvent in analysis and extraction process Feed stock for refinery :metacrolein,axit
metacrilic,iso-pren
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3. Advantage & Disadvantage:
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3. PRODUCTION OF MTBE
1. CHEMISTRY OF MTBE
2. WHERE’S I-C4=?
3. SYNTHESIS MTBE PROCESS
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3. PRODUCTION OF MTBE
3.1. CHEMISTRY OF MTBE Mechanism:
∆H=-16.060Btu/lb-mole Catalyst: acid Bronsted KHSO4, NaHSO4, H2SO4,
Amberlyst 15 (acidic cation exchange resin) Temperature : 40-100C Pressure:100-150 psi Ratio MeOH/iC4= : 1/1,1 to reduce by-reaction
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3.2. WHERE’S I-C4=? A. I-C4= from Steam Crackers (SC) The isobutylene content canvary from 35 to 50 vol%, with about 44 % considered typicalB.I-C4= from Refineries (FCC) The isobutylene concentration is much
lower inthis mixed butylene stream compared to the
steam cracker mixed C4s stream
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3. PRODUCTION OF MTBE
3.3. SYNTHESIS MTBE PROCESSA. Production of MTBE by Conventional
ProcessB. Production of MTBE by Reactive
Distillation Unit
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