Method for refining high-purity anthracene and carbazole from crude anthracene
A high-purity, carbazole technology, used in distillation purification/separation, crystallization purification/separation, organic chemistry, etc., can solve problems such as clogging of distillation systems, improve product quality and yield, reduce energy consumption, and overcome clogging problems Effect
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Embodiment 1
[0033] Embodiment 1: Separation and purification of refined anthracene and carbazole in crude anthracene
[0034]The crude anthracene raw material of a chemical enterprise contains a small amount of light components, 26% of anthracene, 22% of carbazole, and 35% of phenanthrene, and the rest are heavy components. The feed rate is 1200kg / h, the temperature is 20°C, and the pressure is 300kPa. Adopt the method of the present invention, add crude anthracene in the reactor 1 that crude benzene solvent is housed, the ratio of crude anthracene and solvent crude benzene is 1: 1.5 (mass ratio), the mixed solvent temperature is 60 ℃, slowly heats to 70 ℃, The material is discharged into the filter crystallization device 2, cooled to normal temperature, and centrifuged to obtain 650 kg / h of anthracene and carbazole solid phase mixture. Add the obtained solid-phase mixture of anthracene and carbazole into melting kettle 3 containing 200# solvent oil (hereinafter referred to as solvent 2),...
Embodiment 2
[0038] Embodiment 2: Separation and purification of refined anthracene and carbazole in crude anthracene
[0039] The crude anthracene raw material of a chemical enterprise contains a small amount of light components, 26% of anthracene, 22% of carbazole, and 35% of phenanthrene, and the rest are heavy components. The feed rate is 1200kg / h, the temperature is 20°C, and the pressure is 300kPa. Adopt the method of the present invention, add crude anthracene in the reactor 1 that crude benzene solvent is housed, the ratio of crude anthracene and solvent crude benzene is 1: 2.5 (mass ratio), the mixed solvent temperature is 60 ℃, slowly heats to 70 ℃, The material is discharged into the filter crystallization device 2, cooled to normal temperature, and centrifuged to obtain 650 kg / h of anthracene and carbazole solid phase mixture. Add the obtained solid-phase mixture of anthracene and carbazole into the melting tank 3 containing heavy benzene (hereinafter referred to as solvent 2),...
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