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Methyl Acetate Technology Provider
  • Methyl Acetate Technology Provider

Methyl Acetate Technology Provider

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Country of manufacture:China
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Description

Methyl Acetate Plant

Proprietary Technology and Plants

Technology Introduction:

Of The methyl acetate Production Process  SL the TEC Propose IS based ON The condensation of acetic acid and Methanol over A Solid acid Catalyst. This kind of Catalyst IS The Best Solution When High Yields, Low acetic acid and Methanol consumption, consistent Product and Low Equipment Corrosion are required on reliable basis. Under normal operation , this catalyst has an average service life of three years or longer.

Moderate Reaction Conditions are at The, HOWEVER, AS methyl acetate , the Methanol and Water by Will form binary and tertiary azeotropic Mixtures, 'apologetic' to PREPARE IT IS Very High Purity Product by Conventional Methods.

In the traditional process, one reactor and nine distillation columns are required to produce high purity methyl acetate. And they have main disadvantages incl.

 

1. The synthesis of methyl acetate is reversible, and due to the limitation of chemical equilibrium, the conversion yield is low.

2. Methyl acetate-water binary azeotrope, methyl acetate-methanol binary azeotrope, and methyl acetate-methanol-water ternary azeotrope have boiling points quite close to that of azeotrope, thereby, it is difficult to separate and the product purification is very complicated.

3. Large amount of non-reacted methanol and acetic acid are recycled in the system, which complicates the separation process and requires large equipment investment and results in high energy consumption.

To solve the aforementioned problems, SL TEC has developed Reaction-Distillation Process. It integrates the reaction and separation, i.e., the reaction takes place at the same time as the non-reacted RM is separated from the product. In this way, the concentration of the product in the reactor is increased, thereby the reaction rate is boosted, moreover the incurrence of side reactions is inhibited due to the isolation of product out of the reactor in time. Thereby the conversion yield is effectively upgraded. Besides, the esterification heat is made use of as the heating source for vaporization to save energy consumption.

Technical Features:

1. REACTION-DISTILLATION

Compared to the traditional separate reaction and distillation technology, REACTIONDISTILLATION

has advantages as follows:

• High Conversion Yield: product continuously removed

• High Selectivity: inhibiting side reactions

• Low Energy Consumption: the reaction heat used as the heating source for

vaporization

• Easy Control of Reaction Temperature: reaction heat consumed and temperature

limited by vapor-liquid equilibrium

• Acetic acid is not only the RW but also the extraction agent to counter-flow extract

water from the water-methyl acetate azeotrope, simplify the purification

• Low Investment: short synthesis and purification route, low equipment cost

2. SOLID ACID CATALYST

Compared to the traditional sulfuric acid catalyst, ACID ION EXCHANGE RESIN

has advantages:

• less side reactions higher selectivity

•Low corrosion low requirement for equipment MOC less investment

• simple post-treatment lower production cost

•rare pollution

Performance:

Specific Consumption

S/N

Item

Consumption Rate

1

99.9% Methanol 


     ( mt / mt @ per ton of 99.5% methyl acetate)

 

0.44

2

99.8% Acetic Acid 


     ( mt / mt @ per ton of 99.5% methyl acetate)

 

0.81

3

Catalyst 


     ( m3 for one load )

 

24 CUM of catalyst plus 25 CUM of catalyst packing

4

Steam 


     ( mt / mt @ per ton of 99.5% methyl acetate)

 

0.77

5

electricity 


     ( KWH / mt @ per ton of 99.5% methyl acetate)

 

50

6

Circulating Water 


     ( mt / mt @ per ton of 99.5% methyl acetate)

 

90

Characteristics:
Country of manufacture:China
Information is up-to-date: 15.09.2023

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