Brief introduction
The material α-pyrrolidone is a colorless, polar solvent with a high boiling point and an intermediate for organic synthesis. It is used mainly as a raw material for synthesizing resin, pesticides, polyols, printing ink, coating, and iodic solvent, and for producing polyvinylpyrrolidone, nylon-4, γ-reanal, and piracetam.
Technical features
Under pressurization and at a high temperature, γ-butyrolactone, and liquid ammonia solution, synthetically produce α-pyrrolidone, after deamination, dehydration, and rectification of the reactants. The α-pyrrolidone content is at least 96 percent. The amination reaction uses a liquid-phase, continuous tank process, where the productive capacity is large and energy consumption low.
Technical indicators
|
Item |
Specification |
Unit |
Consumption quota |
|
γ-butyrolactone |
99.5% |
t |
1.02 |
|
Liquid ammonia |
99.5% |
t |
0.22 |
|
Cooling water |
0.35Mpa |
t |
100 |
|
Electricity |
380V/220V |
kWh |
300 |
|
Steam |
0.60Mpa |
t |
4.5 |
Product indicators
|
Appearance |
Purity |
Moisture content |
Chroma |
|
Colorless liquid |
≥99.5% |
≤ 0.1% |
≤ 15 |
Waste treatment
This process generates wastewater, containing ammonia (less than 0.05 percent) that can decompose biochemically.