DMMn Plant

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CH3O(CH2O)nCH3

This process uses formaldehyde and methylal to synthesize DMMn. The plants provided by Helipont are composed of one set of methanol to formaldehyde plant, one set of methylal plant and one set of DMMn plant. A solid acid catalyst is used throughout the entire plant, giving it a long service life and allows for easy product separation. Using formaldehyde as the raw material can saves money when compared to paraformaldehyde or trioxane. Without the paraformaldehyde device and trioxane device, project costs are also significantly reduced and waste water meets first level emission standards.

Flow chart Production Process of DMMn 50% concentration formaldehyde enters the climbing film evaporator to be concentrated to 75%. The mixed 75% formaldehyde and methylal react with each other to create DMMn and very little heavy by-product. Send Dmmn to purge gas absorption column to be dewatered.

Annotation: for more information, please do not hesitate to contact us.

DMMn Quality Index

Project	Index
DMMn Content	>99.5%
Methanol	＜0.5%
Methylal Content	＜0.01%
Appearance	colorless, transparent
Sulfur Content	＜1ppm
Chlorine Content/td>	＜1ppm
Acidity	≤7(mg KOH/100ml)

Raw Material Consumption Quota

Particular	Consumption quota
Methanol	1.4 t/t
Auxiliary Agent	10 kg/t
Steam	3.5 t/t
Process water	1.2 t/t
Primary water	6.3 t/t
Circulating water	245.2 t/t
Industrial electricity	200 kWh/t
Instrument air	~32 Nm3/t
Nitrogen(purge)	~60 Nm3/hr