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MTBE SYNTHESIS

PGS-TS Nguyễn Hồng Liên

Diệp Ngọc ThànhKSTN-HD-K53

www.themegallery.com

Contents

1. INTRODUCTION

2. PROPERTIES OF MTBE

3. PRODUCTION OF MTBE

4. DISCUSSION

5. REFERENCES


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


1. INTRODUCTION

1.2 DEMAND OF MTBE: A. The World:


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


2. PROPERTIES OF MTBE

1. Chemical physics properties

2. Applications

3. Advantage & Disadvantage


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




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




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




3. Advantage & Disadvantage:



1. CHEMISTRY OF MTBE

2. WHERE’S I-C4=?

3. SYNTHESIS MTBE PROCESS



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




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



C.I-C4= from Dehydrogen I-C4



D. Isobutylene from TBA



3.3. SYNTHESIS MTBE PROCESSA. Production of MTBE by Conventional

ProcessB. Production of MTBE by Reactive

Distillation Unit


1.Production of MTBE by Conventional Process


2.Production of MTBE by Reactive Distillation Unit

1.ABB LUMMUS Process 2. UOP Process

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