Trioxane is the most important monomer for polyacetal(POM) synthesis, POM
production technology with trioxane as the copolymerization monomer takes 80% of
the total POM capacity in the world. It is usually synthesized by enriching 37%
formalin to about 65% and then by oxidation in presence of acid catalyst such as
sulfuric acid. The production consists of formalin enrichment, trioxane
synthesis, trioxane enrichment, extraction, light components stripping and heavy
components stripping.
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1.Product Specification
S/N | Item | Index |
1 | Purity% ≧ | 99.9 |
2 | Moisture ppm≦ | 50 |
3 | Formic Acid ppm≦ | 30 |
4 | Methanol ppm≦ | 30 |
2.Specific Consumption
S/N | Item | Consumption Rate |
I | Raw Material & Auxiliaries |
1 | Methanol
(mt/ mt of 99.9% trioxane) | 1.33 |
2 | Benzene
(kg/ mt of 99.9% trioxane) | 4 |
3 | Sodium Hydroxide (25%)
(kg/ mt of 99.9% trioxane) | 0.325 |
4 | Catalyst
(kg/ mt of 99.9% trioxane) | 0.336 |
II | Utilities | |
1 | Circulating Water
(mt/ mt of 99.9% trioxane) | 6.1 |
2 | Demineralized Water
(mt/hr) | Only used during the plant start-up |
3 | Circulating Cooling Water (delta t = 10oC) | Covered by electricity consumption |
4 | Instrumental Air
(Nm3/ mt of 99.9% trioxane) | 160 |
5 | Nitrogen
(Nm3/ mt of 99.9% trioxane) | 42.6 |
6 | Process Air
(Nm3/ mt of 99.9% trioxane) | 73.7 |
7 | Steam
(mt/ mt of 99.9% trioxane) | 5.89 |
8 | Electricity
(KWH/ mt of 99.9% trioxane) | 758 |
