Liquid Phase Hexamine Plant

Description of Liquid Phase Process

The liquid phase process uses a 37% formaldehyde solution and ammonium. The hexamine solution is then dewatered by evaporator and enters the centrifugation and drying device in order to obtain hexamine. This is an advanced, easy process. Because of the use of evaporation for dehydration, the crystal culture period is long and the urotropine particles are larger.

Flow chart Main Equipment Film-type evaporator Air-flow dryer Mother liquid filtration equipment Waste water Ammonia stripper Reactor Film Evaporator Vapor-liquid separator Concentrate tank Evaporation pot Crystallization receiver Centrifuge Spiral conveyor Desalted water Production Process The formaldehyde solution and ammonia gas react in the reactor, generating hexamine. Condense hexamine product to 60-65% concentration. Evaporation, condensation, centrifuge and drying of 65% hexamine. Annotation The process requires the use of a set of mother liquid filtration equipment because the liquid formaldehyde and condensation batch operations are used, often producing impurities and side reactions that affect product purity. For more information on the production process, please do not hesitate to contact us. Product Specifications

Item	Superior	First Grade	Acceptable
Purity % ≥	99.3	99	98
Moisture % ≤	0.5		1
Ashes % ≤	0.03	0.05	0.08
Aqueous solution appearance	Acceptable		-
Heavy Metal as Pb2+ % ≤	0.001		-
Chloride as Cl- % ≤	0.015		-
Sulphate as SO42- % ≤	0.02		-
Ammonium as NH4+ % ≤	0.001		-

Feedstock Consumption Quota

Particular	unit	Index	Remark
Formaldehyde (37%)	t	3.5～3.6
Ammonium (100%)	kg	530～550
Circulating Cooling water	t	250～300	Water temperature≤25℃P≥0.4MPa
Steam	t	7.0～8.0	P≥0.4MPa
Electricity	kW·h	180	380/220V 50Hz
Demineralized Water	t	1～2	As per standard of D.W.

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