Gas Phase Hexamine Plant
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Gas phase processes save steam during the production process. Under vacuum conditions, use the formaldehyde’s potential heat and the heat generated from the reaction to evaporate the water in the hexamine solution. Gas phase processes for hexamine feature a short route, less side reactions and a high purity. Recycling operations with left over ammonia gas and methanol also remove environmental pollution and decrease consumption.
Flow chart
Main Equipment
- Ammonia reactor
- Ammonia Absorption Tower
- Off-gas Washing Tower
- Mother liquid seal trough
- Vacuum pump
- Spiral conveyor
- Air heater
- Crystallization head tank
- Pneumatic drier
- Off-gas absorption tower
- Hot SW tank
- Off-gas boiler
- Cyclone separator
- Desalted water
- The formaldehyde and ammonia gas react in the reactor, generating hexamine.
- Dewater the hexamine solution to get solid hexamine.
- Drying the solid hexamine.
Annotation: For more information and details 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 | Index | Remark |
| formaldehyde (37%) | 3.5t | Equivalent methanol 1.575t |
| ammonium (100%) | 530kg | Free of oil and water |
| Circulating Cooling water | 150t | Water temperature≤31℃ P≥0.4MPa |
| Steam | 3.0-4.0t | P≥0.6MPa |
| Electricity | 150kW·h | 380/220V 50Hz |
| Demineralized Water | 1～2t |
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