Methylal (Pressure Swing Distillation Process)

Due to its advantages of excellent solvent power, very low viscosity, low surface tension and fully miscible in organic solvents, methylal can be widely used in cosmetics, medicines, household products, automobile products, pesticides, leather polishing agent, detergent, rubber products, paint, inks and so on. especially, high concentrated methylal is mainly applied as molecular weight adjuster for polyformaldehyde, plasticizer, hypnotic agent, analgesic, spice, high grade cosmetics and solvents for Grignard & Reppe reactions.

Introduction

Methylal can be manufactured either by the reaction of formaldehyde and methanol or the oxidation of methanol. However, currently, Methanol Oxidation Process is not mature enough due to the catalyst and most of the plants are still in pilot stage.

SL-TECH proposes Formaldehyde & Methanol Reaction Process. In the traditional Formaldehyde & Methanol Reaction Process, concentrated sulfuric acid is used as the catalyst, which causes extreme corrosion to the equipment, therefore has a very high requirement for the equipment manufacture material, and now it has been phased out. SL-TECH uses a solid acid resin catalyst with high reaction selectivity and long service life, which is manufactured by a Chinese-American joint-ventured factory. The synthesis of methylal usually goes in three ways: batch, continuous and catalyzed reaction-distillation (a chemical unit operation integrating reaction with product distillation). And SL-TECH employs the Rection-Distillation to ensure high conversion yield.

Technical Features

● Low consumption quota;

● Catalyst with long service life, easy to be regenerated and re-loaded;

● High conversion, good selectivity, high product purity, easy operation and small investment.

Methylal specification

S/N	Item	Specification
1	Appearance	Clear colorless liquid
2	Boiling point	42℃
3	Melting point	-104.8℃
4	Density (@20℃/4℃)，g/ml	0.860
5	Solubility	Soluble in three parts water, and miscible with most common organic solvents.
6	Octanol/water partition coefficient(P)	log P = 1.67
7	Methylal (%)	≥92%
8	Methanol (%)	≤7.8%
9	Water (%)	≤0.2%

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Methanol Industry(C1)

Methylal (Pressure Swing Distillation Process)

Introduction

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All Categories

Methanol Industry(C1)

Methylal (Pressure Swing Distillation Process)

Introduction

More Solutions

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