Epichlorohydrin is the main raw material for the production of epoxy resin. It is also an important organic chemical raw material and fine chemical product. It has a wide range of uses. There are three main processes: acryl acetate process, propylene process and glycerin process.
In the traditional propylene process, raw materials rely on petroleum resources, and the fluctuation of its basic price is also affected by the oil price.
In order to reduce the use of petroleum resources, the biodiesel industry is developing rapidly. In the process of the development of the industry, the by-product glycerol production has been improved, which provides a reliable source of raw materials for the production of propylene oxide.
The consumption of catalyst is low and composite catalyst is used with high selectivity and yield.
Low total investment
Waste water recycling, zero discharge.
Normally, it can directly reach the emission standard.
Main process comparison:
High temperature chlorination process of propylene:
The raw materials are propylene and chlorine, which are low in safety and reliability, dangerous production and short operation cycle; high operation temperature and high energy consumption.
Propylene acetate process:
The raw materials are propylene and chlorine, so there are still problems in safety, low energy consumption, but high equipment investment.
Glycerin process:
The raw materials are glycerin and hydrogen chloride, with high safety factor,low energy consumption and less harsh operating temperature.
Technology comparison:
Item | High temperature chlorination process of propylene | Propylene acetate process | Glycerin process |
Raw material 1(t/t ECh) | 0.66（propylene） | 0.59（propylene） | 1.1^1.130（glycerin） |
Raw material1(t/t ECh) | 2.1（Chlorine） | 0.9（Chlorine） | 1.0（HCI ） |
Alkali(t/t ECh) | 1.10（CaO） | 0.70（CaO） | 0.72 CaO |
Investment（30000t ECH） | CNY 250 ~300 million | CNY 400 ~500 million | CNY 150 million |
Safe reliability | Dangerous and short operating cycle | Depends on Pd catalyst | Safe and reliable |
Consumption | High | Lower | 30~40% high temperature chlorination process |
Waste water quantity (t/t ECh) | 40~50 | 20~30 | 3 |
Cost(ten thousand yuan) | 1 | 1.1 | 0.7 |
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