This Anthracene and Carbazole Purification Plant is a complete
industrial rectification and crystallisation system for the production
of purified carbazole and anthracene from crude anthracene.The plant
offers high-purity output with a design capacity of 2,600 tonnes per
year of carbazole and 3,600 tonnes per year of anthracene, making it a
proven solution for buyers of used chemical purification equipment.
Manufacturer: NJR
Type of Machine: Anthracene and Carbazole Purification Plant
Design Capacity:
- 2,600 t/a Carbazole
- 3,600 t/a Anthracene
Output Quality:
- Purity of Carbazole: greater than 97.0%
- Purity of Anthracene: greater than 95.5%
Production Process — Three Steps:
- Step 1: Crystallisation
- Step 2: Rectification
- Step 3: Solidification (Granulation)
Process Description:
- Crystallisation: Static layer crystallisation, 3-stage process.
Cooling plates suspended in the melt. Four individual steps:
crystallising, draining residue, partial melting, total melting.
- Rectification: Vacuum rectification. Structured packing column with
6 packing stages.Steam generation via falling-film evaporator. Head
condenser: integrated shell-and-tube heat exchange
- Granulation (Solidification): Granulation rollers, immersion
process. Subsequent processes: storage and bagging
Main Components and Their Function:
- Crystalliser: Performs static layer crystallisation in three stages
to separate and purify the anthracene and carbazole from the crude
material.
- Rectification Column: Vacuum rectification using a structured
packing column with 6 packing stages. Falling-film evaporator for
steam generation. Integrated shell-and-tube heat exchanger as head
condenser
- Vacuum System: Liquid-ring vacuum pump with asymmetric double-flow
impeller,magnetic coupling, seal liquid using R-anthracene oil, gas
washing function, and
bearing/motor cooling.
- Pumps: Two pump types — centrifugal pump with magnetic coupling,
and canned motor centrifugal pump (with pump cooler).
- Granulation, Silos and Bagging: Granulation rollers operate by
immersion process. Liquid undercooling via water-cooled roller. A
solid film is drawn up and scraped off by a scraper blade. Further
cooling via a cooling screw conveyor with explosion protection. Roller
is blanketed with nitrogen (N2). Silo cell-wheel airlock serves as
transition to outside atmosphere and for dosing. Fill quantity per big
bag: 600 kg carbazole/anthracene.Explosion zone 20 inside filling pipe
and big bag; explosion zone 22 within 1 m radius around bagging
station
- Thermal Oil Plant: Primary circuit with burner, expansion vessel,
storage vessel (Therminol), shell-and-tube heat exchanger, degassing
section, and evaporator K21. Secondary circuits with storage vessel
(Ruetasolv), degassing section, expansion vessel,pressure-holding
pipes, head condenser, cooling traps BV22, carbazole condenser, and
anthracene oil cooler
- CAT Handling / Crude Anthracene Receiving Station: Three
communicating vessels with a single inlet. Includes unloading station
for trucks and crude material vessels
The plant also includes a big bag loading station
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