SECTOR
OUR CUSTOMER IS A PETROCHEMICAL COMPANY WHICH MANAGES THE ACTIVITY OF THE STYRENES & ELASTOMERS, POLYETHYLENE AND BASIC CHEMICAL BUSINESS AREAS, COORDINATING THE PRODUCTION AND MARKETING OF THE ENTIRE PRODUCT PORTFOLIO THROUGH ITS THREE DIVISIONS.
The finishing lines of a polydiene plant produce atmospheric emissions containing V.O.C., polybutadiene rubber fine particles, calcium stearate dusts.
Air emissions from polydiene finishing processes have the following characteristics:
VARIABLE | CHARACTERISTICS |
---|---|
Temperature | 30-80°C |
Humidity | 40-100% |
Presence of volatile organic compounds (V.O.C) | N-hexane |
Presence of dusts in the emission to be treated | 0,5-1 g/Nm3 |
Emission flow rate | 50.000 Nm3/h |
Operational cycle | Continuous |
Variability | Limited |
The main depuration goal is to reduce as much as possible the emission into the atmosphere of pollutants harmful to the environment (V.O.C. and DUSTS), allowing compliance with the regulatory limits laid down for the individual pollutants; the presence of dust, in particular, must be reduced to a minimum to avoid any interference with the abatement plant, one solution is using an industrial VOC air filter.
In order to solve the environmental issue, marked by emissions with almost continuous air flow and considerable mass flows of pollutants, it was installed a regenerative thermal oxidation plant preceded by a section of wet dust abatement.
Regenerative thermal oxidation is frequently used to treat atmospheric emissions containing V.O.C.; as the presence of dust can cause clogging of the ceramic masses, a wet de-dusting section has been added.
The application in the polydiene finishing industry had to involve the identification and application of specific measures aimed at achieving the following objectives:
The results achieved thanks to the combination of these technologies confirm the effectiveness of the solution, which allowed the accomplishment of the following results: